coreboot March 2013

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Patch merged into coreboot/master: f35ce49 ASRock E350M1: Remove non-existing PCI devices 12.1 and 13.1
by gerrit＠coreboot.org 02 Mar '13

02 Mar '13

the following patch was just integrated into master: commit f35ce497d1bbf646e3397ba34dc350b43ac81a44 Author: Paul Menzel <paulepanter(a)users.sourceforge.net> Date: Wed Feb 27 11:17:59 2013 +0100 ASRock E350M1: Remove non-existing PCI devices 12.1 and 13.1 Looking at the coreboot log […] PCI: 00:12.0 [1002/4397] enabled sb800_enable() PCI: Static device PCI: 00:12.1 not found, disabling it. sb800_enable() PCI: 00:12.2 [1002/4396] ops PCI: 00:12.2 [1002/4396] enabled sb800_enable() PCI: 00:13.0 [1002/4397] ops PCI: 00:13.0 [1002/4397] enabled sb800_enable() PCI: Static device PCI: 00:13.1 not found, disabling it. sb800_enable() PCI: 00:13.2 [1002/4396] ops PCI: 00:13.2 [1002/4396] enabled […] and the `lspci -tnvv` output running the proprietary vendor BIOS attached to the Wiki page of the ASRock E350M1 [1][2] -[0000:00]-+-00.0 1022:1510 +-01.0 1002:9802 +-01.1 1002:1314 +-04.0-[01]-- +-11.0 1002:4391 +-12.0 1002:4397 +-12.2 1002:4396 +-13.0 1002:4397 +-13.2 1002:4396 […] both PCI devices do not exist, so remove them from `devicetree.cb`. Commit 48918f7 [3] Persimmon, Inagua: PCI devs 12.1, 13.1 (USB) don't exist, but 14.6 (GEC) does did the same for AMD Inagua and AMD Persimmon. [1] http://www.coreboot.org/ASRock_E350M1 [2] http://www.coreboot.org/File:ASRock_E350M1_info_dump.tar.bz2 [3] http://review.coreboot.org/2463 Change-Id: Ief6de1bda093d1f29d5925985e5c3839cdded537 Signed-off-by: Paul Menzel <paulepanter(a)users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2536 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martin.roth(a)se-eng.com> Build-Tested: build bot (Jenkins) at Wed Feb 27 11:59:36 2013, giving +1 Reviewed-By: Martin Roth <martin.roth(a)se-eng.com> at Sat Mar 2 02:13:44 2013, giving +2 See http://review.coreboot.org/2536 for details. -gerrit

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Patch set updated for coreboot: 5e436e2 samsung/exynos5: add display port and framebuffer defines and initialization
by Ronald G. Minnich 01 Mar '13

01 Mar '13

Ronald G. Minnich (rminnich(a)gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2570 -gerrit commit 5e436e206dc46f96e301a3952d1c6f38e5d264e3 Author: Ronald G. Minnich <rminnich(a)gmail.com> Date: Fri Mar 1 10:18:14 2013 -0800 samsung/exynos5: add display port and framebuffer defines and initialization These are essential functions for setting up the display port and framebuffer, and also enable such things as aux channel communications. We do some very simple initialization in romstage, mainly set a GPIO so that the graphics is powering up, but the complex parts are done in the ramstage. This mirrors the way in which graphics is done in the x86 size. I do not know if 0x10000000 is the correct LCD base. No calls to set up yet. This is getting the pieces right first. Change-Id: I56400ec9016ecb8716ec5a5dae41fdfbfff4817a Signed-off-by: Ronald G. Minnich <rminnich(a)gmail.com> --- src/cpu/samsung/exynos5-common/Makefile.inc | 2 + src/cpu/samsung/exynos5-common/exynos-fb.c | 597 +++++++++++++++++++++++++++ src/cpu/samsung/exynos5-common/s5p-dp-core.h | 256 ++++++++++++ src/cpu/samsung/exynos5-common/s5p-dp-reg.c | 481 +++++++++++++++++++++ src/mainboard/google/snow/ramstage.c | 23 ++ src/mainboard/google/snow/romstage.c | 8 +- 6 files changed, 1366 insertions(+), 1 deletion(-) diff --git a/src/cpu/samsung/exynos5-common/Makefile.inc b/src/cpu/samsung/exynos5-common/Makefile.inc index 47abe0f..6911b70 100644 --- a/src/cpu/samsung/exynos5-common/Makefile.inc +++ b/src/cpu/samsung/exynos5-common/Makefile.inc @@ -19,3 +19,5 @@ ramstage-y += pwm.c # needed by timer.c ramstage-y += timer.c ramstage-y += gpio.c ramstage-y += i2c.c +ramstage-y += s5p-dp-reg.c +ramstage-y += exynos-fb.c diff --git a/src/cpu/samsung/exynos5-common/exynos-fb.c b/src/cpu/samsung/exynos5-common/exynos-fb.c new file mode 100644 index 0000000..0ff7c24 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/exynos-fb.c @@ -0,0 +1,597 @@ +/* + * LCD driver for Exynos + * + * Copyright 2013 Google Inc. + * Copyright (C) 2012 Samsung Electronics + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <arch/io.h> +#include <stdlib.h> +#include <string.h> +#include <console/console.h> +#include <cpu/samsung/exynos5250/cpu.h> +#include <cpu/samsung/exynos5250/power.h> +#include <cpu/samsung/exynos5250/sysreg.h> +#include <drivers/maxim/max77686/max77686.h> + +#include "device/i2c.h" +#include "cpu/samsung/exynos5-common/i2c.h" +#include "cpu/samsung/exynos5250/dsim.h" +#include "cpu/samsung/exynos5250/fimd.h" + +#include "cpu/samsung/exynos5250/s5p-dp.h" +#include "s5p-dp-core.h" + +/* To help debug any init errors here, define a list of possible errors */ +enum { + ERR_PLL_NOT_UNLOCKED = 2, + ERR_VIDEO_CLOCK_BAD, + ERR_VIDEO_STREAM_BAD, + ERR_DPCD_READ_ERROR1, /* 5 */ + + ERR_DPCD_WRITE_ERROR1, + ERR_DPCD_READ_ERROR2, + ERR_DPCD_WRITE_ERROR2, + ERR_INVALID_LANE, + ERR_PLL_NOT_LOCKED, /* 10 */ + + ERR_PRE_EMPHASIS_LEVELS, + ERR_LINK_RATE_ABNORMAL, + ERR_MAX_LANE_COUNT_ABNORMAL, + ERR_LINK_TRAINING_FAILURE, + ERR_MISSING_DP_BASE, /* 15 */ + + ERR_NO_FDT_NODE, +}; +/* ok, this is stupid, but we're going to leave the variables in here until we know it works. + * one cleanup task at a time. + */ +enum stage_t { + STAGE_START = 0, + STAGE_LCD_VDD, + STAGE_BRIDGE_SETUP, + STAGE_BRIDGE_INIT, + STAGE_BRIDGE_RESET, + STAGE_HOTPLUG, + STAGE_DP_CONTROLLER, + STAGE_BACKLIGHT_VDD, + STAGE_BACKLIGHT_PWM, + STAGE_BACKLIGHT_EN, + STAGE_DONE, +}; + +int lcd_line_length; +int lcd_color_fg; +int lcd_color_bg; + +void *lcd_base; /* Start of framebuffer memory */ +void *lcd_console_address; /* Start of console buffer */ + +short console_col; +short console_row; + + +#ifdef CONFIG_EXYNOS_DISPLAYPORT +static struct s5p_dp_device dp_device; + +#endif + +/* Bypass FIMD of DISP1_BLK */ +static void fimd_bypass(void) +{ +#if 0 + struct exynos5_sysreg *sysreg = + (struct exynos5_sysreg *)samsung_get_base_sysreg(); + + setbits_le32(&sysreg->disp1blk_cfg, FIMDBYPASS_DISP1); +#endif +} + +/* Calculate the size of Framebuffer from the resolution */ +static u32 calc_fbsize(vidinfo_t *panel_info) +{ + /* They had PAGE_SIZE here instead of 4096. + * but that's a totally arbitrary number -- everything nowadays + * has lots of page sizes. + * So keep it obvious. + */ + return ALIGN((panel_info->vl_col * panel_info->vl_row * + ((1<<panel_info->vl_bpix) / 8)), 4096); +} + +/* + * Initialize display controller. + * + * @param lcdbase pointer to the base address of framebuffer. + * @pd pointer to the main panel_data structure + */ +void fb_init(vidinfo_t *panel_info, void *lcdbase, struct exynos5_fimd_panel *pd) +{ + unsigned int val; + u32 fbsize; + struct exynos5_fimd *fimd = + (struct exynos5_fimd *)samsung_get_base_fimd(); + struct exynos5_disp_ctrl *disp_ctrl = + (struct exynos5_disp_ctrl *)samsung_get_base_disp_ctrl(); + + writel(pd->ivclk | pd->fixvclk, &disp_ctrl->vidcon1); + val = ENVID_ON | ENVID_F_ON | (pd->clkval_f << CLKVAL_F_OFFSET); + writel(val, &fimd->vidcon0); + + val = (pd->vsync << VSYNC_PULSE_WIDTH_OFFSET) | + (pd->lower_margin << V_FRONT_PORCH_OFFSET) | + (pd->upper_margin << V_BACK_PORCH_OFFSET); + writel(val, &disp_ctrl->vidtcon0); + + val = (pd->hsync << HSYNC_PULSE_WIDTH_OFFSET) | + (pd->right_margin << H_FRONT_PORCH_OFFSET) | + (pd->left_margin << H_BACK_PORCH_OFFSET); + writel(val, &disp_ctrl->vidtcon1); + + val = ((pd->xres - 1) << HOZVAL_OFFSET) | + ((pd->yres - 1) << LINEVAL_OFFSET); + writel(val, &disp_ctrl->vidtcon2); + + writel((unsigned int)lcd_base, &fimd->vidw00add0b0); + + fbsize = calc_fbsize(panel_info); + writel((unsigned int)lcd_base + fbsize, &fimd->vidw00add1b0); + + writel(pd->xres * 2, &fimd->vidw00add2); + + val = ((pd->xres - 1) << OSD_RIGHTBOTX_F_OFFSET); + val |= ((pd->yres - 1) << OSD_RIGHTBOTY_F_OFFSET); + writel(val, &fimd->vidosd0b); + writel(pd->xres * pd->yres, &fimd->vidosd0c); + + setbits_le32(&fimd->shadowcon, CHANNEL0_EN); + + val = BPPMODE_F_RGB_16BIT_565 << BPPMODE_F_OFFSET; + val |= ENWIN_F_ENABLE | HALF_WORD_SWAP_EN; + writel(val, &fimd->wincon0); + + /* DPCLKCON_ENABLE */ + writel(1 << 1, &fimd->dpclkcon); +} + +#if 0 +static void exynos_fimd_disable(void) +{ + struct exynos5_fimd *fimd = + (struct exynos5_fimd *)samsung_get_base_fimd(); + + writel(0, &fimd->wincon0); + clrbits_le32(&fimd->shadowcon, CHANNEL0_EN); +} +#endif +/* + * Configure DP in slave mode and wait for video stream. + * + * param dp pointer to main s5p-dp structure + * param video_info pointer to main video_info structure. + * return status + */ +static int s5p_dp_config_video(struct s5p_dp_device *dp, + struct video_info *video_info) +{ + int timeout = 0; + u32 start; + struct exynos5_dp *base = dp->base; + + s5p_dp_config_video_slave_mode(dp, video_info); + + s5p_dp_set_video_color_format(dp, video_info->color_depth, + video_info->color_space, + video_info->dynamic_range, + video_info->ycbcr_coeff); + + if (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + debug("PLL is not locked yet.\n"); + return -ERR_PLL_NOT_UNLOCKED; + } + + start = get_timer(0); + do { + if (s5p_dp_is_slave_video_stream_clock_on(dp) == 0) { + timeout++; + break; + } + } while (get_timer(start) <= STREAM_ON_TIMEOUT); + + if (!timeout) { + debug("Video Clock Not ok\n"); + return -ERR_VIDEO_CLOCK_BAD; + } + + /* Set to use the register calculated M/N video */ + s5p_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0); + + clrbits_le32(&base->video_ctl_10, FORMAT_SEL); + + /* Disable video mute */ + clrbits_le32(&base->video_ctl_1, HDCP_VIDEO_MUTE); + + /* Configure video slave mode */ + s5p_dp_enable_video_master(dp); + + /* Enable video */ + setbits_le32(&base->video_ctl_1, VIDEO_EN); + timeout = s5p_dp_is_video_stream_on(dp); + + if (timeout) { + debug("Video Stream Not on\n"); + return -ERR_VIDEO_STREAM_BAD; + } + + return 0; +} + +/* + * Set DP to enhanced mode. We use this for EVT1 + * param dp pointer to main s5p-dp structure + * return status + */ +static int s5p_dp_enable_rx_to_enhanced_mode(struct s5p_dp_device *dp) +{ + u8 data; + + if (s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_LANE_COUNT_SET, &data)) { + debug("DPCD read error\n"); + return -ERR_DPCD_READ_ERROR1; + } + + if (s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_LANE_COUNT_SET, + DPCD_ENHANCED_FRAME_EN | + (data & DPCD_LANE_COUNT_SET_MASK))) { + debug("DPCD write error\n"); + return -ERR_DPCD_WRITE_ERROR1; + } + + return 0; +} + +/* + * Enable scrambles mode. We use this for EVT1 + * param dp pointer to main s5p-dp structure + * return status + */ +static int s5p_dp_enable_scramble(struct s5p_dp_device *dp) +{ + u8 data; + struct exynos5_dp *base = dp->base; + + clrbits_le32(&base->dp_training_ptn_set, SCRAMBLING_DISABLE); + + if (s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_TRAINING_PATTERN_SET, + &data)) { + debug("DPCD read error\n"); + return -ERR_DPCD_READ_ERROR2; + } + + if (s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_TRAINING_PATTERN_SET, + (u8)(data & ~DPCD_SCRAMBLING_DISABLED))) { + debug("DPCD write error\n"); + return -ERR_DPCD_WRITE_ERROR2; + } + + return 0; +} + +/* + * Reset DP and prepare DP for init training + * param dp pointer to main s5p-dp structure + */ +static int s5p_dp_init_dp(struct s5p_dp_device *dp) +{ + int ret, i; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < DP_INIT_TRIES; i++) { + s5p_dp_reset(dp); + + /* SW defined function Normal operation */ + clrbits_le32(&base->func_en_1, SW_FUNC_EN_N); + + ret = s5p_dp_init_analog_func(dp); + if (!ret) + break; + + udelay(5000); + debug("LCD retry init, attempt=%d ret=%d\n", i, ret); + } + if (i == DP_INIT_TRIES) { + debug("LCD initialization failed, ret=%d\n", ret); + return ret; + } + + s5p_dp_init_aux(dp); + + return ret; +} + +/* + * Set pre-emphasis level + * param dp pointer to main s5p-dp structure + * param pre_emphasis pre-emphasis level + * param lane lane number(0 - 3) + * return status + */ +static int s5p_dp_set_lane_lane_pre_emphasis(struct s5p_dp_device *dp, + int pre_emphasis, int lane) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = pre_emphasis << PRE_EMPHASIS_SET_SHIFT; + switch (lane) { + case 0: + writel(reg, &base->ln0_link_trn_ctl); + break; + case 1: + writel(reg, &base->ln1_link_trn_ctl); + break; + + case 2: + writel(reg, &base->ln2_link_trn_ctl); + break; + + case 3: + writel(reg, &base->ln3_link_trn_ctl); + break; + default: + debug("%s: Invalid lane %d\n", __func__, lane); + return -ERR_INVALID_LANE; + } + return 0; +} + +/* + * Read supported bandwidth type + * param dp pointer to main s5p-dp structure + * param bandwidth pointer to variable holding bandwidth type + */ +static void s5p_dp_get_max_rx_bandwidth(struct s5p_dp_device *dp, + u8 *bandwidth) +{ + u8 data; + + /* + * For DP rev.1.1, Maximum link rate of Main Link lanes + * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps + */ + s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_MAX_LINK_RATE, &data); + *bandwidth = data; +} + +/* + * Reset DP and prepare DP for init training + * param dp pointer to main s5p-dp structure + * param lane_count pointer to variable holding no of lanes + */ +static void s5p_dp_get_max_rx_lane_count(struct s5p_dp_device *dp, + u8 *lane_count) +{ + u8 data; + + /* + * For DP rev.1.1, Maximum number of Main Link lanes + * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes + */ + s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_MAX_LANE_COUNT, &data); + *lane_count = data & DPCD_MAX_LANE_COUNT_MASK; +} + +/* + * DP H/w Link Training. Set DPCD link rate and bandwidth. + * param dp pointer to main s5p-dp structure + * param max_lane No of lanes + * param max_rate bandwidth + * return status + */ +static int s5p_dp_hw_link_training(struct s5p_dp_device *dp, + unsigned int max_lane, + unsigned int max_rate) +{ + u32 data; + u32 start; + int lane; + struct exynos5_dp *base = dp->base; + + /* Stop Video */ + clrbits_le32(&base->video_ctl_1, VIDEO_EN); + + start = get_timer(0); + while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + if (get_timer(start) > PLL_LOCK_TIMEOUT) { + /* Ignore this error, and try to continue */ + printk(BIOS_ERR, "PLL is not locked yet.\n"); + break; + } + } + + /* Reset Macro */ + setbits_le32(&base->dp_phy_test, MACRO_RST); + + /* 10 us is the minimum reset time. */ + udelay(10); + + clrbits_le32(&base->dp_phy_test, MACRO_RST); + + /* Set TX pre-emphasis to minimum */ + for (lane = 0; lane < max_lane; lane++) + if (s5p_dp_set_lane_lane_pre_emphasis(dp, + PRE_EMPHASIS_LEVEL_0, lane)) { + debug("Unable to set pre emphasis level\n"); + return -ERR_PRE_EMPHASIS_LEVELS; + } + + /* All DP analog module power up */ + writel(0x00, &base->dp_phy_pd); + + /* Initialize by reading RX's DPCD */ + s5p_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate); + s5p_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count); + + if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) && + (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) { + debug("Rx Max Link Rate is abnormal :%x !\n", + dp->link_train.link_rate); + /* Not Retrying */ + return -ERR_LINK_RATE_ABNORMAL; + } + + if (dp->link_train.lane_count == 0) { + debug("Rx Max Lane count is abnormal :%x !\n", + dp->link_train.lane_count); + /* Not retrying */ + return -ERR_MAX_LANE_COUNT_ABNORMAL; + } + + /* Setup TX lane count & rate */ + if (dp->link_train.lane_count > max_lane) + dp->link_train.lane_count = max_lane; + if (dp->link_train.link_rate > max_rate) + dp->link_train.link_rate = max_rate; + + /* Set link rate and count as you want to establish*/ + writel(dp->link_train.lane_count, &base->lane_count_set); + writel(dp->link_train.link_rate, &base->link_bw_set); + + /* Set sink to D0 (Sink Not Ready) mode. */ + s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_SINK_POWER_STATE, + DPCD_SET_POWER_STATE_D0); + + /* Start HW link training */ + writel(HW_TRAINING_EN, &base->dp_hw_link_training); + + /* Wait unitl HW link training done */ + s5p_dp_wait_hw_link_training_done(dp); + + /* Get hardware link training status */ + data = readl(&base->dp_hw_link_training); + if (data != 0) { + debug(" H/W link training failure: 0x%x\n", data); + return -ERR_LINK_TRAINING_FAILURE; + } + + /* Get Link Bandwidth */ + data = readl(&base->link_bw_set); + + dp->link_train.link_rate = data; + + data = readl(&base->lane_count_set); + dp->link_train.lane_count = data; + + return 0; +} + +/* + * Initialize DP display + */ +int dp_controller_init(struct s5p_dp_device *dp_device, unsigned *wait_ms) +{ + int ret; + struct s5p_dp_device *dp = dp_device; + struct exynos5_dp *base; + + //dp->base = (struct exynos5_dp *)addr; + /* yes. we're a snow. Yet somehow our config is from a development kit? + * This Must Change */ + //dp->video_info = &smdk5250_dp_config; + + clock_init_dp_clock(); + + power_enable_dp_phy(); + ret = s5p_dp_init_dp(dp); + if (ret) { + debug("%s: Could not initialize dp\n", __func__); + return ret; + } + + ret = s5p_dp_hw_link_training(dp, dp->video_info->lane_count, + dp->video_info->link_rate); + if (ret) { + debug("unable to do link train\n"); + return ret; + } + /* Minimum delay after H/w Link training */ + udelay(1000); + + ret = s5p_dp_enable_scramble(dp); + if (ret) { + debug("unable to set scramble mode\n"); + return ret; + } + + ret = s5p_dp_enable_rx_to_enhanced_mode(dp); + if (ret) { + debug("unable to set enhanced mode\n"); + return ret; + } + + + base = dp->base; + /* Enable enhanced mode */ + setbits_le32(&base->sys_ctl_4, ENHANCED); + + writel(dp->link_train.lane_count, &base->lane_count_set); + writel(dp->link_train.link_rate, &base->link_bw_set); + + s5p_dp_init_video(dp); + ret = s5p_dp_config_video(dp, dp->video_info); + if (ret) { + debug("unable to config video\n"); + return ret; + } + + /* + * This delay is T3 in the LCD timing spec (defined as >200ms). We set + * this down to 60ms since that's the approximate maximum amount of time + * it'll take a bridge to start outputting LVDS data. The delay of + * >200ms is just a conservative value to avoid turning on the backlight + * when there's random LCD data on the screen. Shaving 140ms off the + * boot is an acceptable trade-off. + */ + *wait_ms = 60; + return 0; +} + +/** + * Init the LCD controller + * + * @param lcdbase Base address of LCD frame buffer + * @return 0 if ok, -ve error code on error + */ +int lcd_ctrl_init(vidinfo_t *panel_info, struct exynos5_fimd_panel *panel_data, void *lcdbase) +{ + int ret = 0; + + //vi->res = panel_info->vl_col; + //vi->yres = panel_info->vl_row; + + fimd_bypass(); + fb_init(panel_info, lcdbase, panel_data); + + /* Enable flushing after LCD writes if requested */ + // forget it. lcd_set_flush_dcache(1); + return ret; +} diff --git a/src/cpu/samsung/exynos5-common/s5p-dp-core.h b/src/cpu/samsung/exynos5-common/s5p-dp-core.h new file mode 100644 index 0000000..67c1990 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/s5p-dp-core.h @@ -0,0 +1,256 @@ +/* + * Header file for Samsung DP (Display Port) interface driver. + * + * Copyright 2013 Google Inc. + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han(a)samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef _S5P_DP_CORE_H +#define _S5P_DP_CORE_H + +#define STREAM_ON_TIMEOUT 100 +#define PLL_LOCK_TIMEOUT 10 +#define DP_INIT_TRIES 10 +#define MAX_CR_LOOP 5 +#define MAX_EQ_LOOP 4 + +/* Link tare type */ +enum link_rate { + LINK_RATE_1_62GBPS = 0x06, + LINK_RATE_2_70GBPS = 0x0a +}; + +/* Number of lanes supported */ +enum link_lane_count { + LANE_COUNT1 = 1, + LANE_COUNT2 = 2, + LANE_COUNT4 = 4 +}; + +/* Pre emphasis level */ +enum pre_emphasis_level { + PRE_EMPHASIS_LEVEL_0, + PRE_EMPHASIS_LEVEL_1, + PRE_EMPHASIS_LEVEL_2, + PRE_EMPHASIS_LEVEL_3, +}; + +/* Type of color space */ +enum color_space { + COLOR_RGB, + COLOR_YCBCR422, + COLOR_YCBCR444 +}; + +/* Video input Bit Per Color */ +enum color_depth { + COLOR_6, + COLOR_8, + COLOR_10, + COLOR_12 +}; + +/* Type of YCbCr coefficient */ +enum color_coefficient { + COLOR_YCBCR601, + COLOR_YCBCR709 +}; + +/* Color range */ +enum dynamic_range { + VESA, + CEA +}; + +/* Status of PLL clock */ +enum pll_status { + PLL_UNLOCKED, + PLL_LOCKED +}; + +/* To choose type of m_value */ +enum clock_recovery_m_value_type { + CALCULATED_M, + REGISTER_M +}; + +struct video_info { + enum color_space color_space; + enum dynamic_range dynamic_range; + enum color_coefficient ycbcr_coeff; + enum color_depth color_depth; + + enum link_rate link_rate; + enum link_lane_count lane_count; + + char *name; + + unsigned int h_sync_polarity:1; + unsigned int v_sync_polarity:1; + unsigned int interlaced:1; +}; + +struct link_train { + u8 link_rate; + u8 lane_count; +}; + +struct s5p_dp_device { + unsigned int irq; + struct exynos5_dp *base; + struct video_info *video_info; + struct link_train link_train; +}; + +/* this struct is used by mainboards to pass mode info to the driver */ +typedef struct vidinfo { + u16 vl_col; + u16 vl_row; + u8 vl_bpix; + u16 *cmap; +} vidinfo_t; + +/* s5p_dp_reg.c */ + +/* + * Reset DP module + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_reset(struct s5p_dp_device *dp); +/* + * Initialize DP to recieve video stream + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_init_video(struct s5p_dp_device *dp); +/* + * Check whether PLL is locked + * + * param dp pointer to main s5p-dp structure + * return Lock status + */ +unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp); +/* + * Initialize analog functions of DP + * + * param dp pointer to main s5p-dp structure + * return 0 on success + */ +int s5p_dp_init_analog_func(struct s5p_dp_device *dp); +/* + * Initialize DP for AUX transaction + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_init_aux(struct s5p_dp_device *dp); + +/* + * Start an AUX transaction. + * + * param dp pointer to main s5p-dp structure + */ +int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp); + +/* + * Write a byte to DPCD register + * + * param dp pointer to main s5p-dp structure + * param reg_addr DPCD register to be written + * param data byte data to be written + * return write status + */ +int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char data); +/* + * Read a byte from DPCD register + * + * param dp pointer to main s5p-dp structure + * param reg_addr DPCD register to read + * param data read byte data + * return read status + */ +int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char *data); +/* + * Initialize DP video functions + * + * param dp pointer to main s5p-dp structure + */ +//void s5p_dp_init_video(struct s5p_dp_device *dp); + +/* + * Set color parameters for display + * + * param dp pointer to main s5p-dp structure + * param color_depth Video input Bit Per Color + * param color_space Colorimetric format of input video + * param dynamic_range VESA range or CEA range + * param coeff YCbCr Coefficients of input video + */ +void s5p_dp_set_video_color_format(struct s5p_dp_device *dp, + unsigned int color_depth, + unsigned int color_space, + unsigned int dynamic_range, + unsigned int coeff); +/* + * Check whether video clock is on + * + * param dp pointer to main s5p-dp structure + * return clock status + */ +int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp); +/* + * Check whether video clock is on + * + * param dp pointer to main s5p-dp structure + * param type clock_recovery_m_value_type + * param m_value to caluculate m_vid value + * param n_value to caluculate n_vid value + */ +void s5p_dp_set_video_cr_mn(struct s5p_dp_device *dp, + enum clock_recovery_m_value_type type, + unsigned int m_value, + unsigned int n_value); +/* + * Set DP to video slave mode thereby enabling video master + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_enable_video_master(struct s5p_dp_device *dp); +/* + * Check whether video stream is on + * + * param dp pointer to main s5p-dp structure + * return video stream status + */ +int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp); +/* + * Configure DP in slave mode + * + * param dp pointer to main s5p-dp structure + * param video_info pointer to main video_info structure. + */ +void s5p_dp_config_video_slave_mode(struct s5p_dp_device *dp, + struct video_info *video_info); + +/* + * Wait unitl HW link training done + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp); + +/* startup and init */ +void fb_init(vidinfo_t *panel_info, void *lcdbase, struct exynos5_fimd_panel *pd); +int dp_controller_init(struct s5p_dp_device *dp_device, unsigned *wait_ms); +int lcd_ctrl_init(vidinfo_t *panel_info, struct exynos5_fimd_panel *panel_data, void *lcdbase); +#endif /* _S5P_DP_CORE_H */ diff --git a/src/cpu/samsung/exynos5-common/s5p-dp-reg.c b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c new file mode 100644 index 0000000..adb64a8 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c @@ -0,0 +1,481 @@ +/* + * Samsung DP (Display port) register interface driver. + * + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han(a)samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <common.h> +#include <arch/io.h> +#include <cpu/samsung/exynos5-common/clk.h> +#include <cpu/samsung/exynos5250/cpu.h> +#include <cpu/samsung/exynos5250/periph.h> +#include <cpu/samsung/exynos5250/s5p-dp.h> +#include "cpu/samsung/exynos5250/fimd.h" +#include "s5p-dp-core.h" + +void s5p_dp_reset(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + writel(RESET_DP_TX, &base->dp_tx_sw_reset); + + /* Stop Video */ + clrbits_le32(&base->video_ctl_1, VIDEO_EN); + clrbits_le32(&base->video_ctl_1, HDCP_VIDEO_MUTE); + + reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | + AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | + HDCP_FUNC_EN_N | SW_FUNC_EN_N; + writel(reg, &base->func_en_1); + + reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N | + SERDES_FIFO_FUNC_EN_N | + LS_CLK_DOMAIN_FUNC_EN_N; + writel(reg, &base->func_en_2); + + udelay(20); + + reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 | + LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0; + + writel(reg, &base->lane_map); + + writel(0x0, &base->sys_ctl_1); + writel(0x40, &base->sys_ctl_2); + writel(0x0, &base->sys_ctl_3); + writel(0x0, &base->sys_ctl_4); + + writel(0x0, &base->pkt_send_ctl); + writel(0x0, &base->dp_hdcp_ctl); + + writel(0x5e, &base->dp_hpd_deglitch_l); + writel(0x1a, &base->dp_hpd_deglitch_h); + + writel(0x10, &base->dp_debug_ctl); + + writel(0x0, &base->dp_phy_test); + + writel(0x0, &base->dp_video_fifo_thrd); + writel(0x20, &base->dp_audio_margin); + + writel(0x4, &base->m_vid_gen_filter_th); + writel(0x2, &base->m_aud_gen_filter_th); + + writel(0x00000101, &base->soc_general_ctl); + + /* Set Analog Parameters */ + writel(0x10, &base->analog_ctl_1); + writel(0x0C, &base->analog_ctl_2); + writel(0x85, &base->analog_ctl_3); + writel(0x66, &base->pll_filter_ctl_1); + writel(0x0, &base->tx_amp_tuning_ctl); + + /* Set interrupt pin assertion polarity as high */ + writel(INT_POL0 | INT_POL1, &base->int_ctl); + + /* Clear pending regisers */ + writel(0xff, &base->common_int_sta_1); + writel(0x4f, &base->common_int_sta_2); + writel(0xe0, &base->common_int_sta_3); + writel(0xe7, &base->common_int_sta_4); + writel(0x63, &base->dp_int_sta); + + /* 0:mask,1: unmask */ + writel(0x00, &base->common_int_mask_1); + writel(0x00, &base->common_int_mask_2); + writel(0x00, &base->common_int_mask_3); + writel(0x00, &base->common_int_mask_4); + writel(0x00, &base->int_sta_mask); +} + +unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp) +{ + u32 reg; + + reg = readl(&dp->base->dp_debug_ctl); + if (reg & PLL_LOCK) + return PLL_LOCKED; + else + return PLL_UNLOCKED; +} + +int s5p_dp_init_analog_func(struct s5p_dp_device *dp) +{ + u32 reg; + u32 start; + struct exynos5_dp *base = dp->base; + + writel(0x00, &base->dp_phy_pd); + + reg = PLL_LOCK_CHG; + writel(reg, &base->common_int_sta_1); + + clrbits_le32(&base->dp_debug_ctl, (F_PLL_LOCK | PLL_LOCK_CTRL)); + + /* Power up PLL */ + if (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + + clrbits_le32(&base->dp_pll_ctl, DP_PLL_PD); + + start = get_timer(0); + while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + if (get_timer(start) > PLL_LOCK_TIMEOUT) { + debug("%s: PLL is not locked yet\n", __func__); + return -1; + } + } + } + + /* Enable Serdes FIFO function and Link symbol clock domain module */ + clrbits_le32(&base->func_en_2, (SERDES_FIFO_FUNC_EN_N | + LS_CLK_DOMAIN_FUNC_EN_N | AUX_FUNC_EN_N)); + return 0; +} + +void s5p_dp_init_aux(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + /* Clear inerrupts related to AUX channel */ + reg = RPLY_RECEIV | AUX_ERR; + writel(reg, &base->dp_int_sta); + + /* Disable AUX channel module */ + setbits_le32(&base->func_en_2, AUX_FUNC_EN_N); + + /* Disable AUX transaction H/W retry */ + reg = (3 & AUX_BIT_PERIOD_MASK) << AUX_BIT_PERIOD_SHIFT; + reg |= (0 & AUX_HW_RETRY_COUNT_MASK) << AUX_HW_RETRY_COUNT_SHIFT; + reg |= (AUX_HW_RETRY_INTERVAL_600_US << AUX_HW_RETRY_INTERVAL_SHIFT); + writel(reg, &base->aux_hw_retry_ctl) ; + + /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */ + reg = DEFER_CTRL_EN; + reg |= (1 & DEFER_COUNT_MASK) << DEFER_COUNT_SHIFT; + writel(reg, &base->aux_ch_defer_dtl); + + /* Enable AUX channel module */ + clrbits_le32(&base->func_en_2, AUX_FUNC_EN_N); +} + +int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp) +{ + int reg; + struct exynos5_dp *base = dp->base; + + /* Enable AUX CH operation */ + setbits_le32(&base->aux_ch_ctl_2, AUX_EN); + + /* Is AUX CH command reply received? */ + reg = readl(&base->dp_int_sta); + while (!(reg & RPLY_RECEIV)) + reg = readl(&base->dp_int_sta); + + /* Clear interrupt source for AUX CH command reply */ + writel(RPLY_RECEIV, &base->dp_int_sta); + + /* Clear interrupt source for AUX CH access error */ + reg = readl(&base->dp_int_sta); + if (reg & AUX_ERR) { + writel(AUX_ERR, &base->dp_int_sta); + return -1; + } + + /* Check AUX CH error access status */ + reg = readl(&base->dp_int_sta); + if ((reg & AUX_STATUS_MASK) != 0) { + debug("AUX CH error happens: %d\n\n", + reg & AUX_STATUS_MASK); + return -1; + } + + return 0; +} + +int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char data) +{ + u32 reg; + int i; + int retval; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < MAX_AUX_RETRY_COUNT; i++) { + /* Clear AUX CH data buffer */ + writel(BUF_CLR, &base->buf_data_ctl); + + /* Select DPCD device address */ + reg = reg_addr >> AUX_ADDR_7_0_SHIFT; + reg &= AUX_ADDR_7_0_MASK; + writel(reg, &base->aux_addr_7_0); + reg = reg_addr >> AUX_ADDR_15_8_SHIFT; + reg &= AUX_ADDR_15_8_MASK; + writel(reg, &base->aux_addr_15_8); + reg = reg_addr >> AUX_ADDR_19_16_SHIFT; + reg &= AUX_ADDR_19_16_MASK; + writel(reg, &base->aux_addr_19_16); + + /* Write data buffer */ + reg = (unsigned int)data; + writel(reg, &base->buf_data_0); + + /* + * Set DisplayPort transaction and write 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &base->aux_ch_ctl_1); + + /* Start AUX transaction */ + retval = s5p_dp_start_aux_transaction(dp); + if (retval == 0) + break; + else + debug("Aux Transaction fail!\n"); + } + + return retval; +} + +int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char *data) +{ + u32 reg; + int i; + int retval; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < MAX_AUX_RETRY_COUNT; i++) { + /* Clear AUX CH data buffer */ + writel(BUF_CLR, &base->buf_data_ctl); + + /* Select DPCD device address */ + reg = reg_addr >> AUX_ADDR_7_0_SHIFT; + reg &= AUX_ADDR_7_0_MASK; + writel(reg, &base->aux_addr_7_0); + reg = reg_addr >> AUX_ADDR_15_8_SHIFT; + reg &= AUX_ADDR_15_8_MASK; + writel(reg, &base->aux_addr_15_8); + reg = reg_addr >> AUX_ADDR_19_16_SHIFT; + reg &= AUX_ADDR_19_16_MASK; + writel(reg, &base->aux_addr_19_16); + + /* + * Set DisplayPort transaction and read 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &base->aux_ch_ctl_1); + + /* Start AUX transaction */ + retval = s5p_dp_start_aux_transaction(dp); + if (retval == 0) + break; + else + debug("Aux Transaction fail!\n"); + } + + /* Read data buffer */ + if (!retval) { + reg = readl(&base->buf_data_0); + *data = (unsigned char)(reg & 0xff); + } + + return retval; +} + +void s5p_dp_init_video(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; + writel(reg, &base->common_int_sta_1); + + reg = 0x0; + writel(reg, &base->sys_ctl_1); + + reg = (4 & CHA_CRI_MASK) << CHA_CRI_SHIFT; + reg |= CHA_CTRL; + writel(reg, &base->sys_ctl_2); + + reg = 0x0; + writel(reg, &base->sys_ctl_3); +} + +void s5p_dp_set_video_color_format(struct s5p_dp_device *dp, + unsigned int color_depth, + unsigned int color_space, + unsigned int dynamic_range, + unsigned int coeff) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + /* Configure the input color depth, color space, dynamic range */ + reg = (dynamic_range << IN_D_RANGE_SHIFT) | + (color_depth << IN_BPC_SHIFT) | + (color_space << IN_COLOR_F_SHIFT); + writel(reg, &base->video_ctl_2); + + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ + reg = readl(&base->video_ctl_3); + reg &= ~IN_YC_COEFFI_MASK; + if (coeff) + reg |= IN_YC_COEFFI_ITU709; + else + reg |= IN_YC_COEFFI_ITU601; + writel(reg, &base->video_ctl_3); +} + +int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->sys_ctl_1); + writel(reg, &base->sys_ctl_1); + + reg = readl(&base->sys_ctl_1); + + if (!(reg & DET_STA)) + return -1; + + reg = readl(&base->sys_ctl_2); + writel(reg, &base->sys_ctl_2); + + reg = readl(&base->sys_ctl_2); + + if (reg & CHA_STA) { + debug("Input stream clk is changing\n"); + return -1; + } + + return 0; +} + +void s5p_dp_set_video_cr_mn(struct s5p_dp_device *dp, + enum clock_recovery_m_value_type type, + unsigned int m_value, + unsigned int n_value) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + if (type == REGISTER_M) { + setbits_le32(&base->sys_ctl_4, FIX_M_VID); + + reg = m_value >> M_VID_0_VALUE_SHIFT; + writel(reg, &base->m_vid_0); + + reg = (m_value >> M_VID_1_VALUE_SHIFT); + writel(reg, &base->m_vid_1); + + reg = (m_value >> M_VID_2_VALUE_SHIFT); + writel(reg, &base->m_vid_2); + + reg = n_value >> N_VID_0_VALUE_SHIFT; + writel(reg, &base->n_vid_0); + + reg = (n_value >> N_VID_1_VALUE_SHIFT); + writel(reg, &base->n_vid_1); + + reg = (n_value >> N_VID_2_VALUE_SHIFT); + writel(reg, &base->n_vid_2); + } else { + clrbits_le32(&base->sys_ctl_4, FIX_M_VID); + + writel(0x00, &base->n_vid_0); + writel(0x80, &base->n_vid_1); + writel(0x00, &base->n_vid_2); + } +} + +void s5p_dp_enable_video_master(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->soc_general_ctl); + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MODE_SLAVE_MODE; + writel(reg, &base->soc_general_ctl); +} + +int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp) +{ + u32 reg, i = 0; + u32 start; + struct exynos5_dp *base = dp->base; + + /* Wait for 4 VSYNC_DET interrupts */ + start = get_timer(0); + do { + reg = readl(&base->common_int_sta_1); + if (reg & VSYNC_DET) { + i++; + writel(reg | VSYNC_DET, &base->common_int_sta_1); + } + if (i == 4) + break; + } while (get_timer(start) <= STREAM_ON_TIMEOUT); + + if (i != 4) { + debug("s5p_dp_is_video_stream_on timeout\n"); + return -1; + } + + return 0; +} + +void s5p_dp_config_video_slave_mode(struct s5p_dp_device *dp, + struct video_info *video_info) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->func_en_1); + reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N); + reg |= MASTER_VID_FUNC_EN_N; + writel(reg, &base->func_en_1); + + reg = readl(&base->video_ctl_10); + reg &= ~INTERACE_SCAN_CFG; + reg |= (video_info->interlaced << 2); + writel(reg, &base->video_ctl_10); + + reg = readl(&base->video_ctl_10); + reg &= ~VSYNC_POLARITY_CFG; + reg |= (video_info->v_sync_polarity << 1); + writel(reg, &base->video_ctl_10); + + reg = readl(&base->video_ctl_10); + reg &= ~HSYNC_POLARITY_CFG; + reg |= (video_info->h_sync_polarity << 0); + writel(reg, &base->video_ctl_10); + + reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; + writel(reg, &base->soc_general_ctl); +} + +void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->dp_hw_link_training); + while (reg & HW_TRAINING_EN) + reg = readl(&base->dp_hw_link_training); +} diff --git a/src/mainboard/google/snow/ramstage.c b/src/mainboard/google/snow/ramstage.c index 5970357..8f5efb5 100644 --- a/src/mainboard/google/snow/ramstage.c +++ b/src/mainboard/google/snow/ramstage.c @@ -19,6 +19,29 @@ #include <console/console.h> #include <cbmem.h> +#include <cpu/samsung/exynos5250/fimd.h> +#include <cpu/samsung/exynos5-common/s5p-dp-core.h> + +vidinfo_t snow_panel_info = { + .vl_col = 1366, + .vl_row = 768, + .vl_bpix = 16, + +}; +struct exynos5_fimd_panel snow_panel = { + /* Display I/F is eDP */ + .is_dp = 1, + .is_mipi = 0, + .fixvclk = 0, + .ivclk = 0, + .clkval_f = 2, + .upper_margin = 14, + .lower_margin = 3, + .vsync = 5, + .left_margin = 80, + .right_margin = 48, + .hsync = 32, +}; void hardwaremain(int boot_complete); void main(void) diff --git a/src/mainboard/google/snow/romstage.c b/src/mainboard/google/snow/romstage.c index 7e1cd57..639c2ef 100644 --- a/src/mainboard/google/snow/romstage.c +++ b/src/mainboard/google/snow/romstage.c @@ -31,7 +31,6 @@ #include <cpu/samsung/exynos5250/setup.h> #include <cpu/samsung/exynos5250/periph.h> #include <cpu/samsung/exynos5250/clock_init.h> - #include <console/console.h> #include <arch/stages.h> @@ -70,6 +69,11 @@ static void initialize_s5p_mshc(void) { exynos_pinmux_config(PERIPH_ID_SDMMC2, 0); } +static void graphics(void) +{ + + exynos_pinmux_config(PERIPH_ID_DPHPD, 0); +} void main(void) { struct mem_timings *mem; @@ -108,6 +112,8 @@ void main(void) initialize_s5p_mshc(); + graphics(); + entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/coreboot_ram"); printk(BIOS_INFO, "entry is 0x%p, leaving romstage.\n", entry);

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Patch merged into coreboot/master: f91c8f2 FrontRunner/Toucan-AF: work around AGESA RAM init crashing on reboot
by gerrit＠coreboot.org 01 Mar '13

01 Mar '13

the following patch was just integrated into master: commit f91c8f290b2a723d1bda9a5dd7d668390672317e Author: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Date: Fri Mar 1 19:01:00 2013 +0100 FrontRunner/Toucan-AF: work around AGESA RAM init crashing on reboot If you try to reset the system with outb(3,0x92), outb(4,0xcf9) or a triple-fault it will instead crash with a messy screen. As the more common outb(0xFE, 0x64) doesn't work with our setup, Linux will crash whenever you ask it to reboot. Closer inspection shows that on a warm boot of Coreboot agesawrapper_amdinitpost() always fails with error code 7. Looks like DDR3 re-init goes wrong somehow. I tried find the reason for this but was unable to. I am convinced this is not board specific but a bug in AGESA. In the end I had to settle for a workaround: if amdinitpost returns 7 this patch resets the system harder with outb(0x06, 0x0cf9), after that RAM init will succeed. As amdinitpost is early in POST this automatic reset is quick enough not to be noticable. I'd perfer a real fix, but that's all I have. Change-Id: I4763254b489f42a135232e45328ecf0d5c4d961a Signed-off-by: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Reviewed-on: http://review.coreboot.org/2573 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer(a)coreboot.org> Build-Tested: build bot (Jenkins) at Fri Mar 1 21:58:08 2013, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Sat Mar 2 00:18:08 2013, giving +2 See http://review.coreboot.org/2573 for details. -gerrit

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Patch merged into coreboot/master: 68c9f2b LiPPERT Toucan-AF [2/2]: actually implement mainboard support
by gerrit＠coreboot.org 01 Mar '13

01 Mar '13

the following patch was just integrated into master: commit 68c9f2bdc50d5bf51a3d09dc6ebc51bed2ec5d30 Author: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Date: Fri Mar 1 17:20:42 2013 +0100 LiPPERT Toucan-AF [2/2]: actually implement mainboard support Step 2: change the Persimmon code to adapt it to the new board's hardware. The Toucan-AF is a COM Express Compact Type 6 form factor embedded board: - AMD Fusion G-T56N (1.65 GHz dual core) or T40R (1 GHz single core) APU - 1-4 GB DDR3 memory down - 1x VGA, 2x DisplayPort (1 switchable to LVDS) - AMD A55E (Hudson-E1) southbridge - 8x USB 2.0 - 4x SATA - HD Audio (with codec on baseboard) - NEC uPD78F0532 microcontroller on I2C ("SEMA") - 7x PCIe2.0 x1 (1 on PEG) - Intel I210 GbE (on APU PCIe x1, can be disabled for additional PCIe) - 2x SST 25VF032B (SO8, soldered) 4 MB SPI flash (BIOS and failsafe BIOS) The Toucan-AF has no SIO on board. This patch includes basic support for a Winbond W83627DHG (PS/2, 2x RS232), because the ADLINK ExpressBase-6 used for evaluation happens to have one. The code may have to be adapted to the actual baseboard of the application. http://www.adlinktech.com/PD/web/PD_detail.php?pid=1132 Change-Id: I9041b905bad45852ac9b402fcbd5decbc98b377b Signed-off-by: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Reviewed-on: http://review.coreboot.org/2572 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer(a)coreboot.org> Build-Tested: build bot (Jenkins) at Fri Mar 1 21:48:26 2013, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Sat Mar 2 00:16:38 2013, giving +2 See http://review.coreboot.org/2572 for details. -gerrit

1 0

Patch merged into coreboot/master: 1664404 LiPPERT Toucan-AF [1/2]: create board by forking AMD Persimmon
by gerrit＠coreboot.org 01 Mar '13

01 Mar '13

the following patch was just integrated into master: commit 1664404652e2db51845e21db302d162a63eb0347 Author: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Date: Fri Mar 1 17:12:56 2013 +0100 LiPPERT Toucan-AF [1/2]: create board by forking AMD Persimmon Step 1: copy all files unmodified from Persimmon. This makes it much easier later to see how the two boards actually and deliberately differ when porting bugfixes from one to the other. Git's copy detection is imperfect (and slow). Change-Id: I1ff02913479c07679f8c3ae5e6dd7876e6000b55 Signed-off-by: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Reviewed-on: http://review.coreboot.org/2571 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer(a)coreboot.org> Build-Tested: build bot (Jenkins) at Fri Mar 1 21:37:38 2013, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Sat Mar 2 00:16:26 2013, giving +2 See http://review.coreboot.org/2571 for details. -gerrit

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Patch merged into coreboot/master: 23d13b1 LiPPERT FrontRunner-AF [2/2]: actually implement mainboard support
by gerrit＠coreboot.org 01 Mar '13

01 Mar '13

the following patch was just integrated into master: commit 23d13b1d454a6482d436cc65f50bb367c027c10f Author: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Date: Thu Feb 28 10:24:20 2013 +0100 LiPPERT FrontRunner-AF [2/2]: actually implement mainboard support Step 2: change the Persimmon code to adapt it to the new board's hardware. The FrontRunner-AF is a PC/104+ form factor embedded board: - AMD Fusion G-T56N (1.65 GHz dual core) or T40R (1 GHz single core) APU - DDR3 SO-DIMM socket (1.5 or 1.35V) - VGA and LVDS (via Analogix ANX3110) - AMD A55E (Hudson-E1) southbridge - 6x USB 2.0 - 1x SATA, 1x CFast socket - HD Audio (via Realtek ALC886) - PCI and ISA (via ITE IT8888) - NEC uPD78F0532 microcontroller on I2C ("SEMA") - Intel I210 GbE (on APU PCIe x1) - SMSC SCH3112 SIO - PS/2 - 2x RS232/485 - 2x SST 25VF032B (SO8, soldered) 4 MB SPI flash (BIOS and failsafe BIOS) http://www.adlinktech.com/PD/web/PD_detail.php?pid=1131 Change-Id: Id55f89d224ad669b351c36128b12299802b721ba Signed-off-by: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Reviewed-on: http://review.coreboot.org/2553 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer(a)coreboot.org> Build-Tested: build bot (Jenkins) at Fri Mar 1 21:28:28 2013, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Sat Mar 2 00:16:04 2013, giving +2 See http://review.coreboot.org/2553 for details. -gerrit

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Patch set updated for coreboot: a5360cf samsung/exynos5: add display port and framebuffer defines and initialization
by Ronald G. Minnich 01 Mar '13

01 Mar '13

Ronald G. Minnich (rminnich(a)gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2570 -gerrit commit a5360cf7b34d89b8d1e9b17444fefbc42de28af1 Author: Ronald G. Minnich <rminnich(a)gmail.com> Date: Fri Mar 1 10:18:14 2013 -0800 samsung/exynos5: add display port and framebuffer defines and initialization These are essential functions for setting up the display port and framebuffer, and also enable such things as aux channel communications. We do some very simple initialization in romstage, mainly set a GPIO so that the graphics is powering up, but the complex parts are done in the ramstage. This mirrors the way in which graphics is done in the x86 size. I do not know if 0x10000000 is the correct LCD base. Change-Id: I56400ec9016ecb8716ec5a5dae41fdfbfff4817a Signed-off-by: Ronald G. Minnich <rminnich(a)gmail.com> --- src/cpu/samsung/exynos5-common/Makefile.inc | 2 + src/cpu/samsung/exynos5-common/exynos-fb.c | 597 +++++++++++++++++++++++++++ src/cpu/samsung/exynos5-common/s5p-dp-core.h | 256 ++++++++++++ src/cpu/samsung/exynos5-common/s5p-dp-reg.c | 481 +++++++++++++++++++++ src/mainboard/google/snow/bootblock.c | 4 + src/mainboard/google/snow/ramstage.c | 30 ++ src/mainboard/google/snow/romstage.c | 8 +- 7 files changed, 1377 insertions(+), 1 deletion(-) diff --git a/src/cpu/samsung/exynos5-common/Makefile.inc b/src/cpu/samsung/exynos5-common/Makefile.inc index 47abe0f..6911b70 100644 --- a/src/cpu/samsung/exynos5-common/Makefile.inc +++ b/src/cpu/samsung/exynos5-common/Makefile.inc @@ -19,3 +19,5 @@ ramstage-y += pwm.c # needed by timer.c ramstage-y += timer.c ramstage-y += gpio.c ramstage-y += i2c.c +ramstage-y += s5p-dp-reg.c +ramstage-y += exynos-fb.c diff --git a/src/cpu/samsung/exynos5-common/exynos-fb.c b/src/cpu/samsung/exynos5-common/exynos-fb.c new file mode 100644 index 0000000..0ff7c24 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/exynos-fb.c @@ -0,0 +1,597 @@ +/* + * LCD driver for Exynos + * + * Copyright 2013 Google Inc. + * Copyright (C) 2012 Samsung Electronics + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <arch/io.h> +#include <stdlib.h> +#include <string.h> +#include <console/console.h> +#include <cpu/samsung/exynos5250/cpu.h> +#include <cpu/samsung/exynos5250/power.h> +#include <cpu/samsung/exynos5250/sysreg.h> +#include <drivers/maxim/max77686/max77686.h> + +#include "device/i2c.h" +#include "cpu/samsung/exynos5-common/i2c.h" +#include "cpu/samsung/exynos5250/dsim.h" +#include "cpu/samsung/exynos5250/fimd.h" + +#include "cpu/samsung/exynos5250/s5p-dp.h" +#include "s5p-dp-core.h" + +/* To help debug any init errors here, define a list of possible errors */ +enum { + ERR_PLL_NOT_UNLOCKED = 2, + ERR_VIDEO_CLOCK_BAD, + ERR_VIDEO_STREAM_BAD, + ERR_DPCD_READ_ERROR1, /* 5 */ + + ERR_DPCD_WRITE_ERROR1, + ERR_DPCD_READ_ERROR2, + ERR_DPCD_WRITE_ERROR2, + ERR_INVALID_LANE, + ERR_PLL_NOT_LOCKED, /* 10 */ + + ERR_PRE_EMPHASIS_LEVELS, + ERR_LINK_RATE_ABNORMAL, + ERR_MAX_LANE_COUNT_ABNORMAL, + ERR_LINK_TRAINING_FAILURE, + ERR_MISSING_DP_BASE, /* 15 */ + + ERR_NO_FDT_NODE, +}; +/* ok, this is stupid, but we're going to leave the variables in here until we know it works. + * one cleanup task at a time. + */ +enum stage_t { + STAGE_START = 0, + STAGE_LCD_VDD, + STAGE_BRIDGE_SETUP, + STAGE_BRIDGE_INIT, + STAGE_BRIDGE_RESET, + STAGE_HOTPLUG, + STAGE_DP_CONTROLLER, + STAGE_BACKLIGHT_VDD, + STAGE_BACKLIGHT_PWM, + STAGE_BACKLIGHT_EN, + STAGE_DONE, +}; + +int lcd_line_length; +int lcd_color_fg; +int lcd_color_bg; + +void *lcd_base; /* Start of framebuffer memory */ +void *lcd_console_address; /* Start of console buffer */ + +short console_col; +short console_row; + + +#ifdef CONFIG_EXYNOS_DISPLAYPORT +static struct s5p_dp_device dp_device; + +#endif + +/* Bypass FIMD of DISP1_BLK */ +static void fimd_bypass(void) +{ +#if 0 + struct exynos5_sysreg *sysreg = + (struct exynos5_sysreg *)samsung_get_base_sysreg(); + + setbits_le32(&sysreg->disp1blk_cfg, FIMDBYPASS_DISP1); +#endif +} + +/* Calculate the size of Framebuffer from the resolution */ +static u32 calc_fbsize(vidinfo_t *panel_info) +{ + /* They had PAGE_SIZE here instead of 4096. + * but that's a totally arbitrary number -- everything nowadays + * has lots of page sizes. + * So keep it obvious. + */ + return ALIGN((panel_info->vl_col * panel_info->vl_row * + ((1<<panel_info->vl_bpix) / 8)), 4096); +} + +/* + * Initialize display controller. + * + * @param lcdbase pointer to the base address of framebuffer. + * @pd pointer to the main panel_data structure + */ +void fb_init(vidinfo_t *panel_info, void *lcdbase, struct exynos5_fimd_panel *pd) +{ + unsigned int val; + u32 fbsize; + struct exynos5_fimd *fimd = + (struct exynos5_fimd *)samsung_get_base_fimd(); + struct exynos5_disp_ctrl *disp_ctrl = + (struct exynos5_disp_ctrl *)samsung_get_base_disp_ctrl(); + + writel(pd->ivclk | pd->fixvclk, &disp_ctrl->vidcon1); + val = ENVID_ON | ENVID_F_ON | (pd->clkval_f << CLKVAL_F_OFFSET); + writel(val, &fimd->vidcon0); + + val = (pd->vsync << VSYNC_PULSE_WIDTH_OFFSET) | + (pd->lower_margin << V_FRONT_PORCH_OFFSET) | + (pd->upper_margin << V_BACK_PORCH_OFFSET); + writel(val, &disp_ctrl->vidtcon0); + + val = (pd->hsync << HSYNC_PULSE_WIDTH_OFFSET) | + (pd->right_margin << H_FRONT_PORCH_OFFSET) | + (pd->left_margin << H_BACK_PORCH_OFFSET); + writel(val, &disp_ctrl->vidtcon1); + + val = ((pd->xres - 1) << HOZVAL_OFFSET) | + ((pd->yres - 1) << LINEVAL_OFFSET); + writel(val, &disp_ctrl->vidtcon2); + + writel((unsigned int)lcd_base, &fimd->vidw00add0b0); + + fbsize = calc_fbsize(panel_info); + writel((unsigned int)lcd_base + fbsize, &fimd->vidw00add1b0); + + writel(pd->xres * 2, &fimd->vidw00add2); + + val = ((pd->xres - 1) << OSD_RIGHTBOTX_F_OFFSET); + val |= ((pd->yres - 1) << OSD_RIGHTBOTY_F_OFFSET); + writel(val, &fimd->vidosd0b); + writel(pd->xres * pd->yres, &fimd->vidosd0c); + + setbits_le32(&fimd->shadowcon, CHANNEL0_EN); + + val = BPPMODE_F_RGB_16BIT_565 << BPPMODE_F_OFFSET; + val |= ENWIN_F_ENABLE | HALF_WORD_SWAP_EN; + writel(val, &fimd->wincon0); + + /* DPCLKCON_ENABLE */ + writel(1 << 1, &fimd->dpclkcon); +} + +#if 0 +static void exynos_fimd_disable(void) +{ + struct exynos5_fimd *fimd = + (struct exynos5_fimd *)samsung_get_base_fimd(); + + writel(0, &fimd->wincon0); + clrbits_le32(&fimd->shadowcon, CHANNEL0_EN); +} +#endif +/* + * Configure DP in slave mode and wait for video stream. + * + * param dp pointer to main s5p-dp structure + * param video_info pointer to main video_info structure. + * return status + */ +static int s5p_dp_config_video(struct s5p_dp_device *dp, + struct video_info *video_info) +{ + int timeout = 0; + u32 start; + struct exynos5_dp *base = dp->base; + + s5p_dp_config_video_slave_mode(dp, video_info); + + s5p_dp_set_video_color_format(dp, video_info->color_depth, + video_info->color_space, + video_info->dynamic_range, + video_info->ycbcr_coeff); + + if (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + debug("PLL is not locked yet.\n"); + return -ERR_PLL_NOT_UNLOCKED; + } + + start = get_timer(0); + do { + if (s5p_dp_is_slave_video_stream_clock_on(dp) == 0) { + timeout++; + break; + } + } while (get_timer(start) <= STREAM_ON_TIMEOUT); + + if (!timeout) { + debug("Video Clock Not ok\n"); + return -ERR_VIDEO_CLOCK_BAD; + } + + /* Set to use the register calculated M/N video */ + s5p_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0); + + clrbits_le32(&base->video_ctl_10, FORMAT_SEL); + + /* Disable video mute */ + clrbits_le32(&base->video_ctl_1, HDCP_VIDEO_MUTE); + + /* Configure video slave mode */ + s5p_dp_enable_video_master(dp); + + /* Enable video */ + setbits_le32(&base->video_ctl_1, VIDEO_EN); + timeout = s5p_dp_is_video_stream_on(dp); + + if (timeout) { + debug("Video Stream Not on\n"); + return -ERR_VIDEO_STREAM_BAD; + } + + return 0; +} + +/* + * Set DP to enhanced mode. We use this for EVT1 + * param dp pointer to main s5p-dp structure + * return status + */ +static int s5p_dp_enable_rx_to_enhanced_mode(struct s5p_dp_device *dp) +{ + u8 data; + + if (s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_LANE_COUNT_SET, &data)) { + debug("DPCD read error\n"); + return -ERR_DPCD_READ_ERROR1; + } + + if (s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_LANE_COUNT_SET, + DPCD_ENHANCED_FRAME_EN | + (data & DPCD_LANE_COUNT_SET_MASK))) { + debug("DPCD write error\n"); + return -ERR_DPCD_WRITE_ERROR1; + } + + return 0; +} + +/* + * Enable scrambles mode. We use this for EVT1 + * param dp pointer to main s5p-dp structure + * return status + */ +static int s5p_dp_enable_scramble(struct s5p_dp_device *dp) +{ + u8 data; + struct exynos5_dp *base = dp->base; + + clrbits_le32(&base->dp_training_ptn_set, SCRAMBLING_DISABLE); + + if (s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_TRAINING_PATTERN_SET, + &data)) { + debug("DPCD read error\n"); + return -ERR_DPCD_READ_ERROR2; + } + + if (s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_TRAINING_PATTERN_SET, + (u8)(data & ~DPCD_SCRAMBLING_DISABLED))) { + debug("DPCD write error\n"); + return -ERR_DPCD_WRITE_ERROR2; + } + + return 0; +} + +/* + * Reset DP and prepare DP for init training + * param dp pointer to main s5p-dp structure + */ +static int s5p_dp_init_dp(struct s5p_dp_device *dp) +{ + int ret, i; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < DP_INIT_TRIES; i++) { + s5p_dp_reset(dp); + + /* SW defined function Normal operation */ + clrbits_le32(&base->func_en_1, SW_FUNC_EN_N); + + ret = s5p_dp_init_analog_func(dp); + if (!ret) + break; + + udelay(5000); + debug("LCD retry init, attempt=%d ret=%d\n", i, ret); + } + if (i == DP_INIT_TRIES) { + debug("LCD initialization failed, ret=%d\n", ret); + return ret; + } + + s5p_dp_init_aux(dp); + + return ret; +} + +/* + * Set pre-emphasis level + * param dp pointer to main s5p-dp structure + * param pre_emphasis pre-emphasis level + * param lane lane number(0 - 3) + * return status + */ +static int s5p_dp_set_lane_lane_pre_emphasis(struct s5p_dp_device *dp, + int pre_emphasis, int lane) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = pre_emphasis << PRE_EMPHASIS_SET_SHIFT; + switch (lane) { + case 0: + writel(reg, &base->ln0_link_trn_ctl); + break; + case 1: + writel(reg, &base->ln1_link_trn_ctl); + break; + + case 2: + writel(reg, &base->ln2_link_trn_ctl); + break; + + case 3: + writel(reg, &base->ln3_link_trn_ctl); + break; + default: + debug("%s: Invalid lane %d\n", __func__, lane); + return -ERR_INVALID_LANE; + } + return 0; +} + +/* + * Read supported bandwidth type + * param dp pointer to main s5p-dp structure + * param bandwidth pointer to variable holding bandwidth type + */ +static void s5p_dp_get_max_rx_bandwidth(struct s5p_dp_device *dp, + u8 *bandwidth) +{ + u8 data; + + /* + * For DP rev.1.1, Maximum link rate of Main Link lanes + * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps + */ + s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_MAX_LINK_RATE, &data); + *bandwidth = data; +} + +/* + * Reset DP and prepare DP for init training + * param dp pointer to main s5p-dp structure + * param lane_count pointer to variable holding no of lanes + */ +static void s5p_dp_get_max_rx_lane_count(struct s5p_dp_device *dp, + u8 *lane_count) +{ + u8 data; + + /* + * For DP rev.1.1, Maximum number of Main Link lanes + * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes + */ + s5p_dp_read_byte_from_dpcd(dp, DPCD_ADDR_MAX_LANE_COUNT, &data); + *lane_count = data & DPCD_MAX_LANE_COUNT_MASK; +} + +/* + * DP H/w Link Training. Set DPCD link rate and bandwidth. + * param dp pointer to main s5p-dp structure + * param max_lane No of lanes + * param max_rate bandwidth + * return status + */ +static int s5p_dp_hw_link_training(struct s5p_dp_device *dp, + unsigned int max_lane, + unsigned int max_rate) +{ + u32 data; + u32 start; + int lane; + struct exynos5_dp *base = dp->base; + + /* Stop Video */ + clrbits_le32(&base->video_ctl_1, VIDEO_EN); + + start = get_timer(0); + while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + if (get_timer(start) > PLL_LOCK_TIMEOUT) { + /* Ignore this error, and try to continue */ + printk(BIOS_ERR, "PLL is not locked yet.\n"); + break; + } + } + + /* Reset Macro */ + setbits_le32(&base->dp_phy_test, MACRO_RST); + + /* 10 us is the minimum reset time. */ + udelay(10); + + clrbits_le32(&base->dp_phy_test, MACRO_RST); + + /* Set TX pre-emphasis to minimum */ + for (lane = 0; lane < max_lane; lane++) + if (s5p_dp_set_lane_lane_pre_emphasis(dp, + PRE_EMPHASIS_LEVEL_0, lane)) { + debug("Unable to set pre emphasis level\n"); + return -ERR_PRE_EMPHASIS_LEVELS; + } + + /* All DP analog module power up */ + writel(0x00, &base->dp_phy_pd); + + /* Initialize by reading RX's DPCD */ + s5p_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate); + s5p_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count); + + if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) && + (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) { + debug("Rx Max Link Rate is abnormal :%x !\n", + dp->link_train.link_rate); + /* Not Retrying */ + return -ERR_LINK_RATE_ABNORMAL; + } + + if (dp->link_train.lane_count == 0) { + debug("Rx Max Lane count is abnormal :%x !\n", + dp->link_train.lane_count); + /* Not retrying */ + return -ERR_MAX_LANE_COUNT_ABNORMAL; + } + + /* Setup TX lane count & rate */ + if (dp->link_train.lane_count > max_lane) + dp->link_train.lane_count = max_lane; + if (dp->link_train.link_rate > max_rate) + dp->link_train.link_rate = max_rate; + + /* Set link rate and count as you want to establish*/ + writel(dp->link_train.lane_count, &base->lane_count_set); + writel(dp->link_train.link_rate, &base->link_bw_set); + + /* Set sink to D0 (Sink Not Ready) mode. */ + s5p_dp_write_byte_to_dpcd(dp, DPCD_ADDR_SINK_POWER_STATE, + DPCD_SET_POWER_STATE_D0); + + /* Start HW link training */ + writel(HW_TRAINING_EN, &base->dp_hw_link_training); + + /* Wait unitl HW link training done */ + s5p_dp_wait_hw_link_training_done(dp); + + /* Get hardware link training status */ + data = readl(&base->dp_hw_link_training); + if (data != 0) { + debug(" H/W link training failure: 0x%x\n", data); + return -ERR_LINK_TRAINING_FAILURE; + } + + /* Get Link Bandwidth */ + data = readl(&base->link_bw_set); + + dp->link_train.link_rate = data; + + data = readl(&base->lane_count_set); + dp->link_train.lane_count = data; + + return 0; +} + +/* + * Initialize DP display + */ +int dp_controller_init(struct s5p_dp_device *dp_device, unsigned *wait_ms) +{ + int ret; + struct s5p_dp_device *dp = dp_device; + struct exynos5_dp *base; + + //dp->base = (struct exynos5_dp *)addr; + /* yes. we're a snow. Yet somehow our config is from a development kit? + * This Must Change */ + //dp->video_info = &smdk5250_dp_config; + + clock_init_dp_clock(); + + power_enable_dp_phy(); + ret = s5p_dp_init_dp(dp); + if (ret) { + debug("%s: Could not initialize dp\n", __func__); + return ret; + } + + ret = s5p_dp_hw_link_training(dp, dp->video_info->lane_count, + dp->video_info->link_rate); + if (ret) { + debug("unable to do link train\n"); + return ret; + } + /* Minimum delay after H/w Link training */ + udelay(1000); + + ret = s5p_dp_enable_scramble(dp); + if (ret) { + debug("unable to set scramble mode\n"); + return ret; + } + + ret = s5p_dp_enable_rx_to_enhanced_mode(dp); + if (ret) { + debug("unable to set enhanced mode\n"); + return ret; + } + + + base = dp->base; + /* Enable enhanced mode */ + setbits_le32(&base->sys_ctl_4, ENHANCED); + + writel(dp->link_train.lane_count, &base->lane_count_set); + writel(dp->link_train.link_rate, &base->link_bw_set); + + s5p_dp_init_video(dp); + ret = s5p_dp_config_video(dp, dp->video_info); + if (ret) { + debug("unable to config video\n"); + return ret; + } + + /* + * This delay is T3 in the LCD timing spec (defined as >200ms). We set + * this down to 60ms since that's the approximate maximum amount of time + * it'll take a bridge to start outputting LVDS data. The delay of + * >200ms is just a conservative value to avoid turning on the backlight + * when there's random LCD data on the screen. Shaving 140ms off the + * boot is an acceptable trade-off. + */ + *wait_ms = 60; + return 0; +} + +/** + * Init the LCD controller + * + * @param lcdbase Base address of LCD frame buffer + * @return 0 if ok, -ve error code on error + */ +int lcd_ctrl_init(vidinfo_t *panel_info, struct exynos5_fimd_panel *panel_data, void *lcdbase) +{ + int ret = 0; + + //vi->res = panel_info->vl_col; + //vi->yres = panel_info->vl_row; + + fimd_bypass(); + fb_init(panel_info, lcdbase, panel_data); + + /* Enable flushing after LCD writes if requested */ + // forget it. lcd_set_flush_dcache(1); + return ret; +} diff --git a/src/cpu/samsung/exynos5-common/s5p-dp-core.h b/src/cpu/samsung/exynos5-common/s5p-dp-core.h new file mode 100644 index 0000000..67c1990 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/s5p-dp-core.h @@ -0,0 +1,256 @@ +/* + * Header file for Samsung DP (Display Port) interface driver. + * + * Copyright 2013 Google Inc. + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han(a)samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef _S5P_DP_CORE_H +#define _S5P_DP_CORE_H + +#define STREAM_ON_TIMEOUT 100 +#define PLL_LOCK_TIMEOUT 10 +#define DP_INIT_TRIES 10 +#define MAX_CR_LOOP 5 +#define MAX_EQ_LOOP 4 + +/* Link tare type */ +enum link_rate { + LINK_RATE_1_62GBPS = 0x06, + LINK_RATE_2_70GBPS = 0x0a +}; + +/* Number of lanes supported */ +enum link_lane_count { + LANE_COUNT1 = 1, + LANE_COUNT2 = 2, + LANE_COUNT4 = 4 +}; + +/* Pre emphasis level */ +enum pre_emphasis_level { + PRE_EMPHASIS_LEVEL_0, + PRE_EMPHASIS_LEVEL_1, + PRE_EMPHASIS_LEVEL_2, + PRE_EMPHASIS_LEVEL_3, +}; + +/* Type of color space */ +enum color_space { + COLOR_RGB, + COLOR_YCBCR422, + COLOR_YCBCR444 +}; + +/* Video input Bit Per Color */ +enum color_depth { + COLOR_6, + COLOR_8, + COLOR_10, + COLOR_12 +}; + +/* Type of YCbCr coefficient */ +enum color_coefficient { + COLOR_YCBCR601, + COLOR_YCBCR709 +}; + +/* Color range */ +enum dynamic_range { + VESA, + CEA +}; + +/* Status of PLL clock */ +enum pll_status { + PLL_UNLOCKED, + PLL_LOCKED +}; + +/* To choose type of m_value */ +enum clock_recovery_m_value_type { + CALCULATED_M, + REGISTER_M +}; + +struct video_info { + enum color_space color_space; + enum dynamic_range dynamic_range; + enum color_coefficient ycbcr_coeff; + enum color_depth color_depth; + + enum link_rate link_rate; + enum link_lane_count lane_count; + + char *name; + + unsigned int h_sync_polarity:1; + unsigned int v_sync_polarity:1; + unsigned int interlaced:1; +}; + +struct link_train { + u8 link_rate; + u8 lane_count; +}; + +struct s5p_dp_device { + unsigned int irq; + struct exynos5_dp *base; + struct video_info *video_info; + struct link_train link_train; +}; + +/* this struct is used by mainboards to pass mode info to the driver */ +typedef struct vidinfo { + u16 vl_col; + u16 vl_row; + u8 vl_bpix; + u16 *cmap; +} vidinfo_t; + +/* s5p_dp_reg.c */ + +/* + * Reset DP module + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_reset(struct s5p_dp_device *dp); +/* + * Initialize DP to recieve video stream + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_init_video(struct s5p_dp_device *dp); +/* + * Check whether PLL is locked + * + * param dp pointer to main s5p-dp structure + * return Lock status + */ +unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp); +/* + * Initialize analog functions of DP + * + * param dp pointer to main s5p-dp structure + * return 0 on success + */ +int s5p_dp_init_analog_func(struct s5p_dp_device *dp); +/* + * Initialize DP for AUX transaction + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_init_aux(struct s5p_dp_device *dp); + +/* + * Start an AUX transaction. + * + * param dp pointer to main s5p-dp structure + */ +int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp); + +/* + * Write a byte to DPCD register + * + * param dp pointer to main s5p-dp structure + * param reg_addr DPCD register to be written + * param data byte data to be written + * return write status + */ +int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char data); +/* + * Read a byte from DPCD register + * + * param dp pointer to main s5p-dp structure + * param reg_addr DPCD register to read + * param data read byte data + * return read status + */ +int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char *data); +/* + * Initialize DP video functions + * + * param dp pointer to main s5p-dp structure + */ +//void s5p_dp_init_video(struct s5p_dp_device *dp); + +/* + * Set color parameters for display + * + * param dp pointer to main s5p-dp structure + * param color_depth Video input Bit Per Color + * param color_space Colorimetric format of input video + * param dynamic_range VESA range or CEA range + * param coeff YCbCr Coefficients of input video + */ +void s5p_dp_set_video_color_format(struct s5p_dp_device *dp, + unsigned int color_depth, + unsigned int color_space, + unsigned int dynamic_range, + unsigned int coeff); +/* + * Check whether video clock is on + * + * param dp pointer to main s5p-dp structure + * return clock status + */ +int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp); +/* + * Check whether video clock is on + * + * param dp pointer to main s5p-dp structure + * param type clock_recovery_m_value_type + * param m_value to caluculate m_vid value + * param n_value to caluculate n_vid value + */ +void s5p_dp_set_video_cr_mn(struct s5p_dp_device *dp, + enum clock_recovery_m_value_type type, + unsigned int m_value, + unsigned int n_value); +/* + * Set DP to video slave mode thereby enabling video master + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_enable_video_master(struct s5p_dp_device *dp); +/* + * Check whether video stream is on + * + * param dp pointer to main s5p-dp structure + * return video stream status + */ +int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp); +/* + * Configure DP in slave mode + * + * param dp pointer to main s5p-dp structure + * param video_info pointer to main video_info structure. + */ +void s5p_dp_config_video_slave_mode(struct s5p_dp_device *dp, + struct video_info *video_info); + +/* + * Wait unitl HW link training done + * + * param dp pointer to main s5p-dp structure + */ +void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp); + +/* startup and init */ +void fb_init(vidinfo_t *panel_info, void *lcdbase, struct exynos5_fimd_panel *pd); +int dp_controller_init(struct s5p_dp_device *dp_device, unsigned *wait_ms); +int lcd_ctrl_init(vidinfo_t *panel_info, struct exynos5_fimd_panel *panel_data, void *lcdbase); +#endif /* _S5P_DP_CORE_H */ diff --git a/src/cpu/samsung/exynos5-common/s5p-dp-reg.c b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c new file mode 100644 index 0000000..adb64a8 --- /dev/null +++ b/src/cpu/samsung/exynos5-common/s5p-dp-reg.c @@ -0,0 +1,481 @@ +/* + * Samsung DP (Display port) register interface driver. + * + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * Author: Jingoo Han <jg1.han(a)samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <common.h> +#include <arch/io.h> +#include <cpu/samsung/exynos5-common/clk.h> +#include <cpu/samsung/exynos5250/cpu.h> +#include <cpu/samsung/exynos5250/periph.h> +#include <cpu/samsung/exynos5250/s5p-dp.h> +#include "cpu/samsung/exynos5250/fimd.h" +#include "s5p-dp-core.h" + +void s5p_dp_reset(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + writel(RESET_DP_TX, &base->dp_tx_sw_reset); + + /* Stop Video */ + clrbits_le32(&base->video_ctl_1, VIDEO_EN); + clrbits_le32(&base->video_ctl_1, HDCP_VIDEO_MUTE); + + reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N | + AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N | + HDCP_FUNC_EN_N | SW_FUNC_EN_N; + writel(reg, &base->func_en_1); + + reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N | + SERDES_FIFO_FUNC_EN_N | + LS_CLK_DOMAIN_FUNC_EN_N; + writel(reg, &base->func_en_2); + + udelay(20); + + reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 | + LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0; + + writel(reg, &base->lane_map); + + writel(0x0, &base->sys_ctl_1); + writel(0x40, &base->sys_ctl_2); + writel(0x0, &base->sys_ctl_3); + writel(0x0, &base->sys_ctl_4); + + writel(0x0, &base->pkt_send_ctl); + writel(0x0, &base->dp_hdcp_ctl); + + writel(0x5e, &base->dp_hpd_deglitch_l); + writel(0x1a, &base->dp_hpd_deglitch_h); + + writel(0x10, &base->dp_debug_ctl); + + writel(0x0, &base->dp_phy_test); + + writel(0x0, &base->dp_video_fifo_thrd); + writel(0x20, &base->dp_audio_margin); + + writel(0x4, &base->m_vid_gen_filter_th); + writel(0x2, &base->m_aud_gen_filter_th); + + writel(0x00000101, &base->soc_general_ctl); + + /* Set Analog Parameters */ + writel(0x10, &base->analog_ctl_1); + writel(0x0C, &base->analog_ctl_2); + writel(0x85, &base->analog_ctl_3); + writel(0x66, &base->pll_filter_ctl_1); + writel(0x0, &base->tx_amp_tuning_ctl); + + /* Set interrupt pin assertion polarity as high */ + writel(INT_POL0 | INT_POL1, &base->int_ctl); + + /* Clear pending regisers */ + writel(0xff, &base->common_int_sta_1); + writel(0x4f, &base->common_int_sta_2); + writel(0xe0, &base->common_int_sta_3); + writel(0xe7, &base->common_int_sta_4); + writel(0x63, &base->dp_int_sta); + + /* 0:mask,1: unmask */ + writel(0x00, &base->common_int_mask_1); + writel(0x00, &base->common_int_mask_2); + writel(0x00, &base->common_int_mask_3); + writel(0x00, &base->common_int_mask_4); + writel(0x00, &base->int_sta_mask); +} + +unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp) +{ + u32 reg; + + reg = readl(&dp->base->dp_debug_ctl); + if (reg & PLL_LOCK) + return PLL_LOCKED; + else + return PLL_UNLOCKED; +} + +int s5p_dp_init_analog_func(struct s5p_dp_device *dp) +{ + u32 reg; + u32 start; + struct exynos5_dp *base = dp->base; + + writel(0x00, &base->dp_phy_pd); + + reg = PLL_LOCK_CHG; + writel(reg, &base->common_int_sta_1); + + clrbits_le32(&base->dp_debug_ctl, (F_PLL_LOCK | PLL_LOCK_CTRL)); + + /* Power up PLL */ + if (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + + clrbits_le32(&base->dp_pll_ctl, DP_PLL_PD); + + start = get_timer(0); + while (s5p_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) { + if (get_timer(start) > PLL_LOCK_TIMEOUT) { + debug("%s: PLL is not locked yet\n", __func__); + return -1; + } + } + } + + /* Enable Serdes FIFO function and Link symbol clock domain module */ + clrbits_le32(&base->func_en_2, (SERDES_FIFO_FUNC_EN_N | + LS_CLK_DOMAIN_FUNC_EN_N | AUX_FUNC_EN_N)); + return 0; +} + +void s5p_dp_init_aux(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + /* Clear inerrupts related to AUX channel */ + reg = RPLY_RECEIV | AUX_ERR; + writel(reg, &base->dp_int_sta); + + /* Disable AUX channel module */ + setbits_le32(&base->func_en_2, AUX_FUNC_EN_N); + + /* Disable AUX transaction H/W retry */ + reg = (3 & AUX_BIT_PERIOD_MASK) << AUX_BIT_PERIOD_SHIFT; + reg |= (0 & AUX_HW_RETRY_COUNT_MASK) << AUX_HW_RETRY_COUNT_SHIFT; + reg |= (AUX_HW_RETRY_INTERVAL_600_US << AUX_HW_RETRY_INTERVAL_SHIFT); + writel(reg, &base->aux_hw_retry_ctl) ; + + /* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */ + reg = DEFER_CTRL_EN; + reg |= (1 & DEFER_COUNT_MASK) << DEFER_COUNT_SHIFT; + writel(reg, &base->aux_ch_defer_dtl); + + /* Enable AUX channel module */ + clrbits_le32(&base->func_en_2, AUX_FUNC_EN_N); +} + +int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp) +{ + int reg; + struct exynos5_dp *base = dp->base; + + /* Enable AUX CH operation */ + setbits_le32(&base->aux_ch_ctl_2, AUX_EN); + + /* Is AUX CH command reply received? */ + reg = readl(&base->dp_int_sta); + while (!(reg & RPLY_RECEIV)) + reg = readl(&base->dp_int_sta); + + /* Clear interrupt source for AUX CH command reply */ + writel(RPLY_RECEIV, &base->dp_int_sta); + + /* Clear interrupt source for AUX CH access error */ + reg = readl(&base->dp_int_sta); + if (reg & AUX_ERR) { + writel(AUX_ERR, &base->dp_int_sta); + return -1; + } + + /* Check AUX CH error access status */ + reg = readl(&base->dp_int_sta); + if ((reg & AUX_STATUS_MASK) != 0) { + debug("AUX CH error happens: %d\n\n", + reg & AUX_STATUS_MASK); + return -1; + } + + return 0; +} + +int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char data) +{ + u32 reg; + int i; + int retval; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < MAX_AUX_RETRY_COUNT; i++) { + /* Clear AUX CH data buffer */ + writel(BUF_CLR, &base->buf_data_ctl); + + /* Select DPCD device address */ + reg = reg_addr >> AUX_ADDR_7_0_SHIFT; + reg &= AUX_ADDR_7_0_MASK; + writel(reg, &base->aux_addr_7_0); + reg = reg_addr >> AUX_ADDR_15_8_SHIFT; + reg &= AUX_ADDR_15_8_MASK; + writel(reg, &base->aux_addr_15_8); + reg = reg_addr >> AUX_ADDR_19_16_SHIFT; + reg &= AUX_ADDR_19_16_MASK; + writel(reg, &base->aux_addr_19_16); + + /* Write data buffer */ + reg = (unsigned int)data; + writel(reg, &base->buf_data_0); + + /* + * Set DisplayPort transaction and write 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE; + writel(reg, &base->aux_ch_ctl_1); + + /* Start AUX transaction */ + retval = s5p_dp_start_aux_transaction(dp); + if (retval == 0) + break; + else + debug("Aux Transaction fail!\n"); + } + + return retval; +} + +int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp, + unsigned int reg_addr, + unsigned char *data) +{ + u32 reg; + int i; + int retval; + struct exynos5_dp *base = dp->base; + + for (i = 0; i < MAX_AUX_RETRY_COUNT; i++) { + /* Clear AUX CH data buffer */ + writel(BUF_CLR, &base->buf_data_ctl); + + /* Select DPCD device address */ + reg = reg_addr >> AUX_ADDR_7_0_SHIFT; + reg &= AUX_ADDR_7_0_MASK; + writel(reg, &base->aux_addr_7_0); + reg = reg_addr >> AUX_ADDR_15_8_SHIFT; + reg &= AUX_ADDR_15_8_MASK; + writel(reg, &base->aux_addr_15_8); + reg = reg_addr >> AUX_ADDR_19_16_SHIFT; + reg &= AUX_ADDR_19_16_MASK; + writel(reg, &base->aux_addr_19_16); + + /* + * Set DisplayPort transaction and read 1 byte + * If bit 3 is 1, DisplayPort transaction. + * If Bit 3 is 0, I2C transaction. + */ + reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ; + writel(reg, &base->aux_ch_ctl_1); + + /* Start AUX transaction */ + retval = s5p_dp_start_aux_transaction(dp); + if (retval == 0) + break; + else + debug("Aux Transaction fail!\n"); + } + + /* Read data buffer */ + if (!retval) { + reg = readl(&base->buf_data_0); + *data = (unsigned char)(reg & 0xff); + } + + return retval; +} + +void s5p_dp_init_video(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG; + writel(reg, &base->common_int_sta_1); + + reg = 0x0; + writel(reg, &base->sys_ctl_1); + + reg = (4 & CHA_CRI_MASK) << CHA_CRI_SHIFT; + reg |= CHA_CTRL; + writel(reg, &base->sys_ctl_2); + + reg = 0x0; + writel(reg, &base->sys_ctl_3); +} + +void s5p_dp_set_video_color_format(struct s5p_dp_device *dp, + unsigned int color_depth, + unsigned int color_space, + unsigned int dynamic_range, + unsigned int coeff) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + /* Configure the input color depth, color space, dynamic range */ + reg = (dynamic_range << IN_D_RANGE_SHIFT) | + (color_depth << IN_BPC_SHIFT) | + (color_space << IN_COLOR_F_SHIFT); + writel(reg, &base->video_ctl_2); + + /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ + reg = readl(&base->video_ctl_3); + reg &= ~IN_YC_COEFFI_MASK; + if (coeff) + reg |= IN_YC_COEFFI_ITU709; + else + reg |= IN_YC_COEFFI_ITU601; + writel(reg, &base->video_ctl_3); +} + +int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->sys_ctl_1); + writel(reg, &base->sys_ctl_1); + + reg = readl(&base->sys_ctl_1); + + if (!(reg & DET_STA)) + return -1; + + reg = readl(&base->sys_ctl_2); + writel(reg, &base->sys_ctl_2); + + reg = readl(&base->sys_ctl_2); + + if (reg & CHA_STA) { + debug("Input stream clk is changing\n"); + return -1; + } + + return 0; +} + +void s5p_dp_set_video_cr_mn(struct s5p_dp_device *dp, + enum clock_recovery_m_value_type type, + unsigned int m_value, + unsigned int n_value) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + if (type == REGISTER_M) { + setbits_le32(&base->sys_ctl_4, FIX_M_VID); + + reg = m_value >> M_VID_0_VALUE_SHIFT; + writel(reg, &base->m_vid_0); + + reg = (m_value >> M_VID_1_VALUE_SHIFT); + writel(reg, &base->m_vid_1); + + reg = (m_value >> M_VID_2_VALUE_SHIFT); + writel(reg, &base->m_vid_2); + + reg = n_value >> N_VID_0_VALUE_SHIFT; + writel(reg, &base->n_vid_0); + + reg = (n_value >> N_VID_1_VALUE_SHIFT); + writel(reg, &base->n_vid_1); + + reg = (n_value >> N_VID_2_VALUE_SHIFT); + writel(reg, &base->n_vid_2); + } else { + clrbits_le32(&base->sys_ctl_4, FIX_M_VID); + + writel(0x00, &base->n_vid_0); + writel(0x80, &base->n_vid_1); + writel(0x00, &base->n_vid_2); + } +} + +void s5p_dp_enable_video_master(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->soc_general_ctl); + reg &= ~VIDEO_MODE_MASK; + reg |= VIDEO_MODE_SLAVE_MODE; + writel(reg, &base->soc_general_ctl); +} + +int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp) +{ + u32 reg, i = 0; + u32 start; + struct exynos5_dp *base = dp->base; + + /* Wait for 4 VSYNC_DET interrupts */ + start = get_timer(0); + do { + reg = readl(&base->common_int_sta_1); + if (reg & VSYNC_DET) { + i++; + writel(reg | VSYNC_DET, &base->common_int_sta_1); + } + if (i == 4) + break; + } while (get_timer(start) <= STREAM_ON_TIMEOUT); + + if (i != 4) { + debug("s5p_dp_is_video_stream_on timeout\n"); + return -1; + } + + return 0; +} + +void s5p_dp_config_video_slave_mode(struct s5p_dp_device *dp, + struct video_info *video_info) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->func_en_1); + reg &= ~(MASTER_VID_FUNC_EN_N|SLAVE_VID_FUNC_EN_N); + reg |= MASTER_VID_FUNC_EN_N; + writel(reg, &base->func_en_1); + + reg = readl(&base->video_ctl_10); + reg &= ~INTERACE_SCAN_CFG; + reg |= (video_info->interlaced << 2); + writel(reg, &base->video_ctl_10); + + reg = readl(&base->video_ctl_10); + reg &= ~VSYNC_POLARITY_CFG; + reg |= (video_info->v_sync_polarity << 1); + writel(reg, &base->video_ctl_10); + + reg = readl(&base->video_ctl_10); + reg &= ~HSYNC_POLARITY_CFG; + reg |= (video_info->h_sync_polarity << 0); + writel(reg, &base->video_ctl_10); + + reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; + writel(reg, &base->soc_general_ctl); +} + +void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp) +{ + u32 reg; + struct exynos5_dp *base = dp->base; + + reg = readl(&base->dp_hw_link_training); + while (reg & HW_TRAINING_EN) + reg = readl(&base->dp_hw_link_training); +} diff --git a/src/mainboard/google/snow/bootblock.c b/src/mainboard/google/snow/bootblock.c index 17a3267..b564938 100644 --- a/src/mainboard/google/snow/bootblock.c +++ b/src/mainboard/google/snow/bootblock.c @@ -30,6 +30,10 @@ void bootblock_mainboard_init(void); void bootblock_mainboard_init(void) { +#if 0 + /* bang the reset on graphics. Fix this when we have suspend/resume. */ + exynos_pinmux_config(PERIPH_ID_DPHPD, 1); +#endif exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE); #if CONFIG_EARLY_CONSOLE exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE); diff --git a/src/mainboard/google/snow/ramstage.c b/src/mainboard/google/snow/ramstage.c index 5970357..1d97fdf 100644 --- a/src/mainboard/google/snow/ramstage.c +++ b/src/mainboard/google/snow/ramstage.c @@ -19,10 +19,40 @@ #include <console/console.h> #include <cbmem.h> +#include <cpu/samsung/exynos5250/fimd.h> +#include <cpu/samsung/exynos5-common/s5p-dp-core.h> + +static vidinfo_t panel_info = { + .vl_col = 1366, + .vl_row = 768, + .vl_bpix = 16, + +}; +static struct exynos5_fimd_panel panel = { + /* Display I/F is eDP */ + .is_dp = 1, + .is_mipi = 0, + .fixvclk = 0, + .ivclk = 0, + .clkval_f = 2, + .upper_margin = 14, + .lower_margin = 3, + .vsync = 5, + .left_margin = 80, + .right_margin = 48, + .hsync = 32, +}; + +static void graphics(void) +{ + panel_info.cmap = cbmem_add(CBMEM_ID_CONSOLE, 64*1024); + fb_init(&panel_info, (void *)0x10000000, &panel); +} void hardwaremain(int boot_complete); void main(void) { + graphics(); console_init(); printk(BIOS_INFO, "hello from ramstage\n"); diff --git a/src/mainboard/google/snow/romstage.c b/src/mainboard/google/snow/romstage.c index 7e1cd57..639c2ef 100644 --- a/src/mainboard/google/snow/romstage.c +++ b/src/mainboard/google/snow/romstage.c @@ -31,7 +31,6 @@ #include <cpu/samsung/exynos5250/setup.h> #include <cpu/samsung/exynos5250/periph.h> #include <cpu/samsung/exynos5250/clock_init.h> - #include <console/console.h> #include <arch/stages.h> @@ -70,6 +69,11 @@ static void initialize_s5p_mshc(void) { exynos_pinmux_config(PERIPH_ID_SDMMC2, 0); } +static void graphics(void) +{ + + exynos_pinmux_config(PERIPH_ID_DPHPD, 0); +} void main(void) { struct mem_timings *mem; @@ -108,6 +112,8 @@ void main(void) initialize_s5p_mshc(); + graphics(); + entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/coreboot_ram"); printk(BIOS_INFO, "entry is 0x%p, leaving romstage.\n", entry);

1 0

Patch merged into coreboot/master: 73d4965 LiPPERT FrontRunner-AF [1/2]: create board by forking AMD Persimmon
by gerrit＠coreboot.org 01 Mar '13

01 Mar '13

the following patch was just integrated into master: commit 73d4965be99cc93cec277afca4cdae979433b2b0 Author: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Date: Thu Feb 28 09:56:20 2013 +0100 LiPPERT FrontRunner-AF [1/2]: create board by forking AMD Persimmon Step 1: copy all files unmodified from Persimmon. This makes it much easier later to see how the two boards actually and deliberately differ when porting bugfixes from one to the other. Git's copy detection is imperfect (and slow). Change-Id: I2fd1bf8428fc8a1e7becee888b6182b9bd8166a0 Signed-off-by: Jens Rottmann <JRottmann(a)LiPPERTembedded.de> Reviewed-on: http://review.coreboot.org/2552 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter(a)users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer(a)coreboot.org> Build-Tested: build bot (Jenkins) at Fri Mar 1 14:48:49 2013, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Sat Mar 2 00:12:32 2013, giving +2 See http://review.coreboot.org/2552 for details. -gerrit

1 0

Patch set updated for coreboot: ebf9d9d AMD Fam14: Add SPD read functions to wrapper code
by Martin Roth 01 Mar '13

01 Mar '13

Martin Roth (martin.roth(a)se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2497 -gerrit commit ebf9d9de1ea732131965da1ecf927ef0b90c03fc Author: Martin Roth <martin.roth(a)se-eng.com> Date: Sun Feb 24 10:46:11 2013 -0700 AMD Fam14: Add SPD read functions to wrapper code Change: This is the initial step for moving the AMD F14 & HUDSON1,2,3 SPD-read callout out of the mainboard directories and into the vendorcode. The next step is to update the platforms to use this routine in BiosCallouts.c and to delete the code from the mainboard directories. The DIMM addresses should be moved into devicetree.cb. If there are significant differences or reasons that the mainboard needs to override this code, it's perfectly reasonable to keep using the version in the mainboard, but this allows us to remove duplicated code and simplify the mainboard directories. Notes: This started by duplicating what was in Persimmon, and was changed to use the devicetree.cb structures. The ASF setup was also removed from the persimmon copy (PMIO writes to 0x28 & 0x29) as that's not needed for the SPD access and doesn't make sense to initialize here. Significant cleanup and magic number reduction was done as well. It is intended that this file will not be included in ramstage as the DIMM init is all done in romstage. This is similar to what was done for Parmer/Thatcher in commit 7fb692bd - http://review.coreboot.org/#/c/2190/ Fam15tn: Move SPD read from mainboards into wrapper Yes, it would make sense to split this into two separate files and move the SMBUS initialization and access into the southbridge wrapper. Maybe that can come next. Change-Id: I1e106d3912c160b0015bf02158d9faba4f578ee3 Signed-off-by: Martin Roth <martin.roth(a)se-eng.com> --- src/northbridge/amd/agesa/family14/Makefile.inc | 2 + src/northbridge/amd/agesa/family14/chip.h | 42 +++++++ src/northbridge/amd/agesa/family14/dimmSpd.c | 150 ++++++++++++++++++++++++ src/northbridge/amd/agesa/family14/dimmSpd.h | 83 +++++++++++++ 4 files changed, 277 insertions(+) diff --git a/src/northbridge/amd/agesa/family14/Makefile.inc b/src/northbridge/amd/agesa/family14/Makefile.inc index 87f4927..e7093fe 100644 --- a/src/northbridge/amd/agesa/family14/Makefile.inc +++ b/src/northbridge/amd/agesa/family14/Makefile.inc @@ -17,4 +17,6 @@ # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # +romstage-y += dimmSpd.c + ramstage-y += northbridge.c diff --git a/src/northbridge/amd/agesa/family14/chip.h b/src/northbridge/amd/agesa/family14/chip.h new file mode 100644 index 0000000..56d9c92 --- /dev/null +++ b/src/northbridge/amd/agesa/family14/chip.h @@ -0,0 +1,42 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Sage Electronic Engineering, LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _NB_AGESA_CHIP_H_ +#define _NB_AGESA_CHIP_H_ + +struct northbridge_amd_agesa_family14_config +{ + /* + * Here is an example of how this would be put into the devicetree.cb file + * Note that only Socket 0, Channel 0 is used for the Ontario + * (family 14, Fam 0x00-0x0F) parts. + * This should be placed after the device pci 18.x statements + * + * register "spdAddrLookup" = " + * { // Use 8-bit SPD addresses here + * { {0xA0, 0xA2}, {0x00, 0x00}, }, // socket 0 - Channel 0 & 1 + * { {0x00, 0x00}, {0x00, 0x00}, }, // socket 1 - Channel 0 & 1 (Unused) + * }" + * + */ + + u8 spdAddrLookup[2][2][4]; +}; + +#endif diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.c b/src/northbridge/amd/agesa/family14/dimmSpd.c new file mode 100644 index 0000000..9f16e5f --- /dev/null +++ b/src/northbridge/amd/agesa/family14/dimmSpd.c @@ -0,0 +1,150 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <device/pci_def.h> +#include <device/device.h> +#include <stdlib.h> +#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ + +/* warning: Porting.h includes an open #pragma pack(1) */ +#include "Porting.h" +#include "AGESA.h" +#include "amdlib.h" +#include "dimmSpd.h" +#include "chip.h" + +/* uncomment for source level debug - GDB gets really confused otherwise. */ +//#pragma optimize ("", off) + +/** + * Read a single SPD byte. If byte 0 is being read, set up the address + * and offset. Following bytes auto increment. + */ +static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, + int offset) +{ + unsigned int status; + UINT64 time_limit; + + if (offset == 0) { + address |= READ_BIT; /* set read bit */ + + /* Clear status, set offset, set slave address and start reading */ + __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); + __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x3E); + __outbyte(iobase + SMBUS_CONTROL_REG, offset); + __outbyte(iobase + SMBUS_HOST_CMD_REG, address); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); + } else { + /* Clear status, issue read command - auto increments to next byte */ + __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); + } + + /* time limit to avoid hanging for unexpected error status */ + time_limit = __rdtsc() + MAX_READ_TSC_COUNT; + for (;;) { + status = __inbyte(iobase + SMBUS_STATUS_REG); + if (__rdtsc() > time_limit) + break; + if ((status & SMBUS_INTERRUPT_MASK) == 0) + continue; /* SMBusInterrupt not set, keep waiting */ + if ((status & HOSTBUSY_MASK) != 0) + continue; /* HostBusy set, keep waiting */ + break; + } + + buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); + if (status == STATUS__COMPLETED_SUCCESSFULLY) + status = AGESA_SUCCESS; + else + status = AGESA_ERROR; + + return status; +} + +static void writePmReg(UINT8 reg, UINT8 data) +{ + __outbyte(PMIO_INDEX_REG, reg); + __outbyte(PMIO_DATA_REG, data); +} + +static void setupFch(UINT16 ioBase) +{ + /* set up SMBUS - Set to SMBUS 0 & set base address */ + /* For SB800 & Hudson1 to SB900 & Hudson 2/3 */ + writePmReg(SMBUS_BAR_HIGH_BYTE, ioBase >> 8); + writePmReg(SMBUS_BAR_LOW_BYTE, (ioBase & 0xe0) | 1); + + /* set SMBus clock to 400 KHz */ + __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); +} + +/** + * Read one or more SPD bytes from a DIMM. + * Start with offset zero and read sequentially. + * Reads 128 bytes in 7-8 ms at 400 KHz. + */ +static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, + UINT16 count) +{ + UINT16 index; + UINT8 status; + + setupFch(iobase); + + for (index = 0; index < count; index++) { + status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index); + if (status != AGESA_SUCCESS) + return status; + } + + return status; +} + +/** + * Gets the SMBUS address for an SPD from the array in devicetree.cb + * then read the SPD into the supplied buffer. + */ +AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr) +{ + UINT8 spdAddress; + UINT16 iobase = SMBUS0_BASE_ADDRESS; + AGESA_READ_SPD_PARAMS *info = infoptr; + ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2)); + ROMSTAGE_CONST struct northbridge_amd_agesa_family14_config *config = + dev->chip_info; + + if ((dev == 0) || (config == 0)) + return AGESA_ERROR; + + if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup)) + return AGESA_ERROR; + if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0])) + return AGESA_ERROR; + if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0])) + return AGESA_ERROR; + + spdAddress = config->spdAddrLookup + [info->SocketId][info->MemChannelId][info->DimmId]; + + if (spdAddress == 0) + return AGESA_ERROR; + return readspd(iobase, spdAddress, (void *)info->Buffer, 128); +} diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.h b/src/northbridge/amd/agesa/family14/dimmSpd.h new file mode 100644 index 0000000..57512c7 --- /dev/null +++ b/src/northbridge/amd/agesa/family14/dimmSpd.h @@ -0,0 +1,83 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA02110-1301 USA + */ + +/*---------------------------------------------------------------------------------------- + * M O D U L E S U S E D + *---------------------------------------------------------------------------------------- + */ + +#ifndef _DIMMSPD_H_ +#define _DIMMSPD_H_ + +/*---------------------------------------------------------------------------------------- + * D E F I N I T I O N S A N D M A C R O S + *---------------------------------------------------------------------------------------- + */ + +#define READ_BIT 0x01 + +#define SMBUS_INTERRUPT_MASK 0x02 +#define HOSTBUSY_MASK 0x01 + +#define SMBUS_READ_BYTE_COMMAND 0x48 +#define SMBUS_READ_COMMAND 0x44 + +#define MAX_READ_TSC_COUNT (2000000000 / 10) + +#define PMIO_INDEX_REG 0xCD6 +#define PMIO_DATA_REG 0xCD7 + +#define SMBUS_BAR_LOW_BYTE 0x2C +#define SMBUS_BAR_HIGH_BYTE 0x2D + +#define SMBUS_STATUS_REG 0x00 +#define SMBUS_SLAVE_STATUS_REG 0x01 +#define SMBUS_COMMAND_REG 0x02 +#define SMBUS_CONTROL_REG 0x03 +#define SMBUS_HOST_CMD_REG 0x04 +#define SMBUS_DATA0_REG 0x05 +#define SMBUS_CLOCK_REG 0x0E + +#define STATUS__COMPLETED_SUCCESSFULLY 0x02 + +#define SMBUS_FREQUENCY_CONST 66000000 / 4 +/*---------------------------------------------------------------------------------------- + * T Y P E D E F S A N D S T R U C T U R E S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * P R O T O T Y P E S O F L O C A L F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +AGESA_STATUS +agesa_ReadSPD (IN UINT32 Func, IN UINT32 Data, IN OUT void *SpdData); + +/*--------------------------------------------------------------------------------------- + * L O C A L F U N C T I O N S + *--------------------------------------------------------------------------------------- + */ + +#endif

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Patch set updated for coreboot: f4c873a AMD Fam14: Add SPD read functions to wrapper code
by Martin Roth 01 Mar '13

01 Mar '13

Martin Roth (martin.roth(a)se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2497 -gerrit commit f4c873a4173dcbf43043912085cd5014ce25a06f Author: Martin Roth <martin.roth(a)se-eng.com> Date: Sun Feb 24 10:46:11 2013 -0700 AMD Fam14: Add SPD read functions to wrapper code Change: This is the initial step for moving the AMD F14 & HUDSON1,2,3 SPD-read callout out of the mainboard directories and into the vendorcode. The next step is to update the platforms to use this routine in BiosCallouts.c and to delete the code from the mainboard directories. The DIMM addresses should be moved into devicetree.cb. If there are significant differences or reasons that the mainboard needs to override this code, it's perfectly reasonable to keep using the version in the mainboard, but this allows us to remove duplicated code and simplify the mainboard directories. Notes: This started by duplicating what was in Persimmon, and was changed to use the devicetree.cb structures. The ASF setup was also removed from the persimmon copy (PMIO writes to 0x28 & 0x29) as that's not needed for the SPD access and doesn't make sense to initialize here. Significant cleanup and magic number reduction was done as well. It is intended that this file will not be included in ramstage as the DIMM init is all done in romstage. This is similar to what was done for Parmer/Thatcher in commit 7fb692bd - http://review.coreboot.org/#/c/2190/ Fam15tn: Move SPD read from mainboards into wrapper Yes, it would make sense to split this into two separate files and move the SMBUS initialization and access into the southbridge wrapper. Maybe that can come next. Change-Id: I1e106d3912c160b0015bf02158d9faba4f578ee3 Signed-off-by: Martin Roth <martin.roth(a)se-eng.com> --- src/northbridge/amd/agesa/family14/Makefile.inc | 2 + src/northbridge/amd/agesa/family14/chip.h | 42 +++++++ src/northbridge/amd/agesa/family14/dimmSpd.c | 150 ++++++++++++++++++++++++ src/northbridge/amd/agesa/family14/dimmSpd.h | 83 +++++++++++++ 4 files changed, 277 insertions(+) diff --git a/src/northbridge/amd/agesa/family14/Makefile.inc b/src/northbridge/amd/agesa/family14/Makefile.inc index 87f4927..e7093fe 100644 --- a/src/northbridge/amd/agesa/family14/Makefile.inc +++ b/src/northbridge/amd/agesa/family14/Makefile.inc @@ -17,4 +17,6 @@ # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # +romstage-y += dimmSpd.c + ramstage-y += northbridge.c diff --git a/src/northbridge/amd/agesa/family14/chip.h b/src/northbridge/amd/agesa/family14/chip.h new file mode 100644 index 0000000..f6e79cc --- /dev/null +++ b/src/northbridge/amd/agesa/family14/chip.h @@ -0,0 +1,42 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Sage Electronic Engineering, LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _NB_AGESA_CHIP_H_ +#define _NB_AGESA_CHIP_H_ + +struct northbridge_amd_agesa_family14_config +{ + /* + * Here is an example of how this would be put into the devicetree.cb file + * Note that only Socket 0, Channel 0 is used for the Ontario + * (family 14, Fam 0x00-0x0F) parts. + * This should be placed after the device pci 18.x statements + * + * register "spdAddrLookup" = " + * { // Use 8-bit SPD addresses here + * { {0xA0, 0xA2}, {0x00, 0x00}, }, // socket 0 - Channel 0 & 1 + * { {0x00, 0x00}, {0x00, 0x00}, }, // socket 1 - Channel 0 & 1 (Unused) + * }" + * + */ + + u8 spdAddrLookup[2][2][4]; +}; + +#endif diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.c b/src/northbridge/amd/agesa/family14/dimmSpd.c new file mode 100644 index 0000000..0793a19 --- /dev/null +++ b/src/northbridge/amd/agesa/family14/dimmSpd.c @@ -0,0 +1,150 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <device/pci_def.h> +#include <device/device.h> +#include <stdlib.h> +#include "OEM.h" /* SMBUS0_BASE_ADDRESS */ + +/* warning: Porting.h includes an open #pragma pack(1) */ +#include "Porting.h" +#include "AGESA.h" +#include "amdlib.h" +#include "dimmSpd.h" +#include "chip.h" + +/* uncomment for source level debug - GDB gets really confused otherwise. */ +//#pragma optimize ("", off) + +/** + * Read a single SPD byte. If byte 0 is being read, set up the address + * and offset. Following bytes auto increment. + */ +static UINT8 readSmbusByte(UINT16 iobase, UINT8 address, char *buffer, + int offset) +{ + unsigned int status; + UINT64 time_limit; + + if (offset == 0) { + address |= READ_BIT; /* set read bit */ + + /* Clear status, set offset, set slave address and start reading */ + __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); + __outbyte(iobase + SMBUS_SLAVE_STATUS_REG, 0x3E); + __outbyte(iobase + SMBUS_CONTROL_REG, offset); + __outbyte(iobase + SMBUS_HOST_CMD_REG, address); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_BYTE_COMMAND); + } else { + /* Clear status, issue read command - auto increments to next byte */ + __outbyte(iobase + SMBUS_STATUS_REG, 0x1E); + __outbyte(iobase + SMBUS_COMMAND_REG, SMBUS_READ_COMMAND); + } + + /* time limit to avoid hanging for unexpected error status */ + time_limit = __rdtsc() + MAX_READ_TSC_COUNT; + for (;;) { + status = __inbyte(iobase + SMBUS_STATUS_REG); + if (__rdtsc() > time_limit) + break; + if ((status & SMBUS_INTERRUPT_MASK) == 0) + continue; /* SMBusInterrupt not set, keep waiting */ + if ((status & HOSTBUSY_MASK) != 0) + continue; /* HostBusy set, keep waiting */ + break; + } + + buffer[0] = __inbyte(iobase + SMBUS_DATA0_REG); + if (status == STATUS__COMPLETED_SUCCESSFULLY) + status = AGESA_SUCCESS; + else + status = AGESA_ERROR; + + return status; +} + +static void writePmReg(UINT8 reg, UINT8 data) +{ + __outbyte(PMIO_INDEX_REG, reg); + __outbyte(PMIO_DATA_REG, data); +} + +static void setupFch(UINT16 ioBase) +{ + /* set up SMBUS - Set to SMBUS 0 & set base address */ + /* For SB800 & Hudson1 to SB900 & Hudson 2/3 */ + writePmReg(SMBUS_BAR_HIGH_BYTE, ioBase >> 8); + writePmReg(SMBUS_BAR_LOW_BYTE, (ioBase & 0xe0) | 1); + + /* set SMBus clock to 400 KHz */ + __outbyte(ioBase + SMBUS_CLOCK_REG, SMBUS_FREQUENCY_CONST / 400000); +} + +/** + * Read one or more SPD bytes from a DIMM. + * Start with offset zero and read sequentially. + * Reads 128 bytes in 7-8 ms at 400 KHz. + */ +static UINT8 readspd(UINT16 iobase, UINT8 SmbusSlaveAddress, char *buffer, + UINT16 count) +{ + UINT16 index; + UINT8 status; + + setupFch(iobase); + + for (index = 0; index < count; index++) { + status = readSmbusByte(iobase, SmbusSlaveAddress, &buffer[index], index); + if (status != AGESA_SUCCESS) + return status; + } + + return status; +} + +/** + * Gets the SMBUS address for an SPD from the array in devicetree.cb + * then read the SPD into the supplied buffer. + */ +AGESA_STATUS agesa_ReadSPD(UINT32 unused1, UINT32 unused2, void *infoptr) +{ + UINT8 spdAddress; + UINT16 iobase = SMBUS0_BASE_ADDRESS; + AGESA_READ_SPD_PARAMS *info = infoptr; + ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2)); + ROMSTAGE_CONST struct northbridge_amd_agesa_family14_config *config = + dev->chip_info; + + if ((dev == 0) || (config == 0)) + return AGESA_ERROR; + + if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup)) + return AGESA_ERROR; + if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0])) + return AGESA_ERROR; + if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0])) + return AGESA_ERROR; + + spdAddress = config->spdAddrLookup + [info->SocketId][info->MemChannelId][info->DimmId]; + + if (spdAddress == 0) + return AGESA_ERROR; + return readspd(iobase, spdAddress, (void *)info->Buffer, 128); +} diff --git a/src/northbridge/amd/agesa/family14/dimmSpd.h b/src/northbridge/amd/agesa/family14/dimmSpd.h new file mode 100644 index 0000000..57512c7 --- /dev/null +++ b/src/northbridge/amd/agesa/family14/dimmSpd.h @@ -0,0 +1,83 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA02110-1301 USA + */ + +/*---------------------------------------------------------------------------------------- + * M O D U L E S U S E D + *---------------------------------------------------------------------------------------- + */ + +#ifndef _DIMMSPD_H_ +#define _DIMMSPD_H_ + +/*---------------------------------------------------------------------------------------- + * D E F I N I T I O N S A N D M A C R O S + *---------------------------------------------------------------------------------------- + */ + +#define READ_BIT 0x01 + +#define SMBUS_INTERRUPT_MASK 0x02 +#define HOSTBUSY_MASK 0x01 + +#define SMBUS_READ_BYTE_COMMAND 0x48 +#define SMBUS_READ_COMMAND 0x44 + +#define MAX_READ_TSC_COUNT (2000000000 / 10) + +#define PMIO_INDEX_REG 0xCD6 +#define PMIO_DATA_REG 0xCD7 + +#define SMBUS_BAR_LOW_BYTE 0x2C +#define SMBUS_BAR_HIGH_BYTE 0x2D + +#define SMBUS_STATUS_REG 0x00 +#define SMBUS_SLAVE_STATUS_REG 0x01 +#define SMBUS_COMMAND_REG 0x02 +#define SMBUS_CONTROL_REG 0x03 +#define SMBUS_HOST_CMD_REG 0x04 +#define SMBUS_DATA0_REG 0x05 +#define SMBUS_CLOCK_REG 0x0E + +#define STATUS__COMPLETED_SUCCESSFULLY 0x02 + +#define SMBUS_FREQUENCY_CONST 66000000 / 4 +/*---------------------------------------------------------------------------------------- + * T Y P E D E F S A N D S T R U C T U R E S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * P R O T O T Y P E S O F L O C A L F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +AGESA_STATUS +agesa_ReadSPD (IN UINT32 Func, IN UINT32 Data, IN OUT void *SpdData); + +/*--------------------------------------------------------------------------------------- + * L O C A L F U N C T I O N S + *--------------------------------------------------------------------------------------- + */ + +#endif

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coreboot March 2013