Patch set updated for coreboot: skylake: Do FspTempRamInit only for FSP1.1 & tidy up PCH early init
Rizwan Qureshi (rizwan.qureshi@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16113
-gerrit
commit 4451adc36b3498a2f5db3ccb25b423b5000c6500 Author: Rizwan Qureshi rizwan.qureshi@intel.com Date: Thu Aug 4 20:01:12 2016 +0530
skylake: Do FspTempRamInit only for FSP1.1 & tidy up PCH early init
Prepare Skylake for FSP2.0 support.
We do not use FSP-T in FSP2.0 driver, hence guard the FspTempRamInit call under a switch.
In addition to the current early PCH configuration program few more register, so all in all we do the following, * Program and enable ACPI Base. * Program and enable PWRM Base. * Program TCO Base. * Program Interrupt configuration registers. * Program LPC IO decode range. * Program SMBUS Base address and enable it. * Enable upper 128 bytes of CMOS. And split the above programming into into smaller functions.
Also, as part of bootblock_pch_early_init we enable decoding for HPET range. This is needed for FspMemoryInit to store and retrieve a global data pointer.
And also move P2SB related definitions to a new header file.
TEST=Build and boot Kunimitsu
Change-Id: Ia201e03b745836ebb43b8d7cfc77550105c71d16 Signed-off-by: Rizwan Qureshi rizwan.qureshi@intel.com Signed-off-by: Barnali Sarkar barnali.sarkar@intel.com --- src/soc/intel/skylake/bootblock/bootblock.c | 10 +- src/soc/intel/skylake/bootblock/pch.c | 9 ++ src/soc/intel/skylake/finalize.c | 7 +- src/soc/intel/skylake/include/soc/p2sb.h | 28 ++++++ src/soc/intel/skylake/include/soc/pcr.h | 5 + src/soc/intel/skylake/include/soc/smbus.h | 12 ++- src/soc/intel/skylake/romstage/pch.c | 143 ++++++++++++++++++++++------ 7 files changed, 173 insertions(+), 41 deletions(-)
diff --git a/src/soc/intel/skylake/bootblock/bootblock.c b/src/soc/intel/skylake/bootblock/bootblock.c index ab1720c..dbf1d5b 100644 --- a/src/soc/intel/skylake/bootblock/bootblock.c +++ b/src/soc/intel/skylake/bootblock/bootblock.c @@ -14,7 +14,9 @@ */
#include <bootblock_common.h> +#if IS_ENABLED(CONFIG_PLATFORM_USES_FSP1_1) #include <fsp/bootblock.h> +#endif #include <soc/bootblock.h> #include <soc/romstage.h>
@@ -36,12 +38,14 @@ void bootblock_soc_early_init(void)
void bootblock_soc_init(void) { - /* locate and call FspTempRamInit */ + /* FSP 2.0 does not provide FSP-T/TempRamInit init support yet */ +#if IS_ENABLED(CONFIG_PLATFORM_USES_FSP1_1) bootblock_fsp_temp_ram_init(); +#endif /* * Perform early chipset initialization before fsp memory init - * example: pirq->irq programming, enabling smbus, pmcbase, abase, - * get platform info, i2c programming + * example: pirq->irq programming, enabling smbus, set pmcbase + * and abase, i2c programming and print platform info */ report_platform_info(); set_max_freq(); diff --git a/src/soc/intel/skylake/bootblock/pch.c b/src/soc/intel/skylake/bootblock/pch.c index 5696115..e7f414b 100644 --- a/src/soc/intel/skylake/bootblock/pch.c +++ b/src/soc/intel/skylake/bootblock/pch.c @@ -18,6 +18,7 @@ #include <soc/bootblock.h> #include <soc/iomap.h> #include <soc/lpc.h> +#include <soc/p2sb.h> #include <soc/pci_devs.h> #include <soc/pcr.h> #include <soc/spi.h> @@ -64,6 +65,14 @@ static void enable_p2sbbar(void) /* Enable P2SB MSE */ pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); + + /* + * Enable decoding for HPET memory address range. + * HPTC_OFFSET(0x60) bit 7, when set the P2SB will decode + * the High Performance Timer memory address range + * selected by bits 1:0 + */ + pci_write_config8(dev, HPTC_OFFSET, HPTC_ADDR_ENABLE_BIT); }
void bootblock_pch_early_init(void) diff --git a/src/soc/intel/skylake/finalize.c b/src/soc/intel/skylake/finalize.c index e5b92c6..e923dcd 100644 --- a/src/soc/intel/skylake/finalize.c +++ b/src/soc/intel/skylake/finalize.c @@ -25,6 +25,7 @@ #include <stdlib.h> #include <soc/lpc.h> #include <soc/me.h> +#include <soc/p2sb.h> #include <soc/pci_devs.h> #include <soc/pcr.h> #include <soc/pm.h> @@ -34,12 +35,6 @@ #include <device/pci.h> #include <chip.h>
-#define PCH_P2SB_EPMASK0 0xB0 -#define PCH_P2SB_EPMASK(mask_number) PCH_P2SB_EPMASK0 + (mask_number * 4) - -#define PCH_P2SB_E0 0xE0 -#define PCH_PWRM_ACPI_TMR_CTL 0xFC - static void pch_configure_endpoints(device_t dev, int epmask_id, uint32_t mask) { uint32_t reg32; diff --git a/src/soc/intel/skylake/include/soc/p2sb.h b/src/soc/intel/skylake/include/soc/p2sb.h new file mode 100644 index 0000000..354679f --- /dev/null +++ b/src/soc/intel/skylake/include/soc/p2sb.h @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corporation. + * + * 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. + */ + +#ifndef _SOC_P2SB_H_ +#define _SOC_P2SB_H_ + +#define HPTC_OFFSET 0x60 +#define HPTC_ADDR_ENABLE_BIT (1 << 7) + +#define PCH_P2SB_EPMASK0 0xB0 +#define PCH_P2SB_EPMASK(mask_number) PCH_P2SB_EPMASK0 + (mask_number * 4) + +#define PCH_P2SB_E0 0xE0 +#define PCH_PWRM_ACPI_TMR_CTL 0xFC + +#endif /* _SOC_P2SB_H_ */ diff --git a/src/soc/intel/skylake/include/soc/pcr.h b/src/soc/intel/skylake/include/soc/pcr.h index c3e8d83..c83a267 100644 --- a/src/soc/intel/skylake/include/soc/pcr.h +++ b/src/soc/intel/skylake/include/soc/pcr.h @@ -35,6 +35,11 @@ #define B_PCH_PCR_DMI_GCS_BILD (1 << 0) #define R_PCH_PCR_DMI_LPCIOD 0x2770 #define R_PCH_PCR_DMI_LPCIOE 0x2774 +#define R_PCH_PCR_DMI_ACPIBA 0x27B4 +#define R_PCH_PCR_DMI_ACPIBDID 0x27B8 +#define R_PCH_PCR_DMI_PMBASEA 0x27AC +#define R_PCH_PCR_DMI_PMBASEC 0x27B0 +#define R_PCH_PCR_DMI_TCOBASE 0x2778
/* RTC configuration */ #define R_PCH_PCR_RTC_CONF 0x3400 diff --git a/src/soc/intel/skylake/include/soc/smbus.h b/src/soc/intel/skylake/include/soc/smbus.h index ff89f3a..856b4a9 100644 --- a/src/soc/intel/skylake/include/soc/smbus.h +++ b/src/soc/intel/skylake/include/soc/smbus.h @@ -22,19 +22,21 @@ /* PCI Configuration Space (D31:F3): SMBus */ #define SMB_BASE 0x20 #define HOSTC 0x40 -#define HST_EN (1 << 0) +#define HST_EN (1 << 0) #define SMB_RCV_SLVA 0x09 /* SMBUS TCO base address. */ #define TCOBASE 0x50 +#define TCOCTL 0x54 +#define SMBUS_TCO_EN (1 << 8)
/* TCO registers and fields live behind TCOBASE I/O bar in SMBus device. */ #define TCO1_STS 0x04 #define TCO2_STS 0x06 -#define TCO2_STS_SECOND_TO 0x02 -#define TCO2_STS_BOOT 0x04 +#define TCO2_STS_SECOND_TO 0x02 +#define TCO2_STS_BOOT 0x04 #define TCO1_CNT 0x08 -#define TCO_LOCK (1 << 12) -#define TCO_TMR_HLT (1 << 11) +#define TCO_LOCK (1 << 12) +#define TCO_TMR_HLT (1 << 11)
/* SMBus I/O bits. */ #define SMBHSTSTAT 0x0 diff --git a/src/soc/intel/skylake/romstage/pch.c b/src/soc/intel/skylake/romstage/pch.c index 26677e8..dd52b40 100644 --- a/src/soc/intel/skylake/romstage/pch.c +++ b/src/soc/intel/skylake/romstage/pch.c @@ -79,31 +79,6 @@ static void pch_enable_lpc(void) pcr_write32(PID_DMI, R_PCH_PCR_DMI_LPCLGIR4, config->gen4_dec); }
-static void pch_device_init(void) -{ - device_t dev; - u32 reg32; - u16 tcobase; - u16 tcocnt; - - dev = PCH_DEV_PMC; - - /* Enable ACPI and PMC mmio regs in PMC Config */ - reg32 = pci_read_config32(dev, ACTL); - reg32 |= ACPI_EN | PWRM_EN; - pci_write_config32(dev, ACTL, reg32); - - /* TCO timer halt */ - tcobase = smbus_tco_regs(); - tcocnt = inw(tcobase + TCO1_CNT); - tcocnt |= TCO_TMR_HLT; - outw(tcocnt, tcobase + TCO1_CNT); - - /* Enable upper 128 bytes of CMOS */ - pcr_andthenor32(PID_RTC, R_PCH_PCR_RTC_CONF, (u32)~0, - B_PCH_PCR_RTC_CONF_UCMOS_EN); -} - static void pch_interrupt_init(void) { u8 index = 0; @@ -120,13 +95,127 @@ static void pch_interrupt_init(void) } }
-void pch_early_init(void) +static void soc_config_acpibase(void) { - pch_device_init(); + uint32_t reg32; + + /* Disable ABASE in PMC Device first before changing Base Address*/ + reg32 = pci_read_config32(PCH_DEV_PMC, ACTL); + pci_write_config32(PCH_DEV_PMC, ACTL, reg32 & ~ACPI_EN); + + /* Program ACPI Base */ + pci_write_config32(PCH_DEV_PMC, ABASE, ACPI_BASE_ADDRESS); + + /* Enable ACPI in PMC */ + pci_write_config32(PCH_DEV_PMC, ACTL, reg32 | ACPI_EN); + + /* + * Program "ACPI Base Address" PCR[DMI] + 27B4h[23:18, 15:2, 0] + * to [0x3F, PMC PCI Offset 40h bit[15:2], 1] + */ + reg32 = ((0x3f << 18) | ACPI_BASE_ADDRESS | 1); + pcr_write32(PID_DMI, R_PCH_PCR_DMI_ACPIBA, reg32); + pcr_write32(PID_DMI, R_PCH_PCR_DMI_ACPIBDID, 0x23A0); +}
+static void soc_config_pwrmbase(void) +{ + uint32_t reg32; + + /* Disable PWRMBASE in PMC Device first before changing Base address */ + reg32 = pci_read_config32(PCH_DEV_PMC, ACTL); + pci_write_config32(PCH_DEV_PMC, ACTL, reg32 & ~PWRM_EN); + + /* Program PWRM Base */ + pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS); + + /* Enable PWRM in PMC */ + pci_write_config32(PCH_DEV_PMC, ACTL, reg32 | PWRM_EN); + + /* + * Program "PM Base Address Memory Range Base" PCR[DMI] + 27ACh[15:0] + * to the same value programmed in PMC PCI Offset 48h bit[31:16], + * this has an implication of making sure the PWRMBASE to be + * 64KB aligned. + * + * Program "PM Base Address Memory Range Limit" PCR[DMI] + 27ACh[31:16] + * to the value programmed in PMC PCI Offset 48h bit[31:16], this has an + * implication of making sure the memory allocated to PWRMBASE to be 64KB + * in size. + */ + pcr_write32(PID_DMI, R_PCH_PCR_DMI_PMBASEA, + ((PCH_PWRM_BASE_ADDRESS & 0xFFFF0000) | + (PCH_PWRM_BASE_ADDRESS >> 16))); + pcr_write32(PID_DMI, R_PCH_PCR_DMI_PMBASEC, 0x800023A0); +} + +static void soc_config_tco(void) +{ + uint32_t reg32 = 0; + uint16_t tcobase; + uint16_t tcocnt; + + /* Disable TCO in SMBUS Device first before changing Base Address */ + reg32 = pci_read_config32(PCH_DEV_SMBUS, TCOCTL); + reg32 &= ~SMBUS_TCO_EN; + pci_write_config32(PCH_DEV_SMBUS, TCOCTL, reg32); + + /* Program TCO Base */ + pci_write_config32(PCH_DEV_SMBUS, TCOBASE, TCO_BASE_ADDDRESS); + + /* Enable TCO in SMBUS */ + pci_write_config32(PCH_DEV_SMBUS, TCOCTL, reg32 | SMBUS_TCO_EN); + + /* + * Program "TCO Base Address" PCR[DMI] + 2778h[15:5, 1] + * to [SMBUS PCI offset 50h[15:5], 1]. + */ + pcr_write32(PID_DMI, R_PCH_PCR_DMI_TCOBASE, + (TCO_BASE_ADDDRESS | (1 << 1))); + + /* Program TCO timer halt */ + tcobase = pci_read_config16(PCH_DEV_SMBUS, TCOBASE); + tcobase &= ~0x1f; + tcocnt = inw(tcobase + TCO1_CNT); + tcocnt |= TCO_TMR_HLT; + outw(tcocnt, tcobase + TCO1_CNT); +} + +static void soc_config_rtc(void) +{ + /* Enable upper 128 bytes of CMOS */ + pcr_andthenor32(PID_RTC, R_PCH_PCR_RTC_CONF, ~0, + B_PCH_PCR_RTC_CONF_UCMOS_EN); +} + +void pch_early_init(void) +{ + /* + * Enabling ABASE for accessing PM1_STS, PM1_EN, PM1_CNT, + * GPE0_STS, GPE0_EN registers. + */ + soc_config_acpibase(); + + /* + * Enabling PWRM Base for accessing + * Global Reset Cause Register. + */ + soc_config_pwrmbase(); + + /* Programming TCO_BASE_ADDRESS and TCO Timer Halt */ + soc_config_tco(); + + /* + * Interrupt Configuration Register Programming + * PIRQx to IRQ Programming + */ pch_interrupt_init();
+ /* Program generic IO Decode Range */ pch_enable_lpc();
+ /* Program SMBUS_BASE_ADDRESS and Enable it */ enable_smbus(); + + soc_config_rtc(); }
-
Rizwan Qureshi