Author: stepan Date: 2010-01-17 14:50:17 +0100 (Sun, 17 Jan 2010) New Revision: 5027
Added: trunk/src/superio/smsc/lpc47n227/ trunk/src/superio/smsc/lpc47n227/Config.lb trunk/src/superio/smsc/lpc47n227/Makefile.inc trunk/src/superio/smsc/lpc47n227/chip.h trunk/src/superio/smsc/lpc47n227/lpc47n227.h trunk/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c trunk/src/superio/smsc/lpc47n227/superio.c Modified: trunk/src/superio/smsc/Kconfig trunk/src/superio/smsc/Makefile.inc Log: Add support for the SMSC LPC47n227 SuperI/O chip
Signed-off-by: Stefan Reinauer stepan@coresystems.de Acked-by: Ronald G. Minnich rminnich@gmail.com Acked-by: Peter Stuge peter@stuge.se
Modified: trunk/src/superio/smsc/Kconfig =================================================================== --- trunk/src/superio/smsc/Kconfig 2010-01-17 13:49:07 UTC (rev 5026) +++ trunk/src/superio/smsc/Kconfig 2010-01-17 13:50:17 UTC (rev 5027) @@ -10,5 +10,7 @@ bool config SUPERIO_SMSC_LPC47N217 bool +config SUPERIO_SMSC_LPC47N227 + bool config SUPERIO_SMSC_SMSCSUPERIO bool
Modified: trunk/src/superio/smsc/Makefile.inc =================================================================== --- trunk/src/superio/smsc/Makefile.inc 2010-01-17 13:49:07 UTC (rev 5026) +++ trunk/src/superio/smsc/Makefile.inc 2010-01-17 13:50:17 UTC (rev 5027) @@ -4,4 +4,5 @@ subdirs-y += lpc47m10x subdirs-y += lpc47m15x subdirs-y += lpc47n217 +subdirs-y += lpc47n227 subdirs-y += smscsuperio
Added: trunk/src/superio/smsc/lpc47n227/Config.lb =================================================================== --- trunk/src/superio/smsc/lpc47n227/Config.lb (rev 0) +++ trunk/src/superio/smsc/lpc47n227/Config.lb 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,21 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2008 coresystems GmbH +## +## 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 +## + +config chip.h +object superio.o
Added: trunk/src/superio/smsc/lpc47n227/Makefile.inc =================================================================== --- trunk/src/superio/smsc/lpc47n227/Makefile.inc (rev 0) +++ trunk/src/superio/smsc/lpc47n227/Makefile.inc 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2009 coresystems GmbH +## +## 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 +## + +obj-$(CONFIG_SUPERIO_SMSC_LPC47N227) += superio.o
Added: trunk/src/superio/smsc/lpc47n227/chip.h =================================================================== --- trunk/src/superio/smsc/lpc47n227/chip.h (rev 0) +++ trunk/src/superio/smsc/lpc47n227/chip.h 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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/device.h> +#include <pc80/keyboard.h> +#include <uart8250.h> + +extern struct chip_operations superio_smsc_lpc47n227_ops; + +struct superio_smsc_lpc47n227_config { + struct uart8250 com1, com2; + struct pc_keyboard keyboard; +};
Added: trunk/src/superio/smsc/lpc47n227/lpc47n227.h =================================================================== --- trunk/src/superio/smsc/lpc47n227/lpc47n227.h (rev 0) +++ trunk/src/superio/smsc/lpc47n227/lpc47n227.h 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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 + */ + +/* Since the LPC47N227 does not have logical devices but a flat configuration + * space, these are arbitrary, but must match declarations in the mainboard + * devicetree.cb + */ +#define LPC47N227_PP 1 /* Parallel Port */ +#define LPC47N227_SP1 2 /* COM1 */ +#define LPC47N227_SP2 3 /* COM2 */ +#define LPC47N227_KBDC 5 /* Keyboard */ + +#define LPC47N227_MAX_CONFIG_REGISTER 0x39
Added: trunk/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c =================================================================== --- trunk/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c (rev 0) +++ trunk/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,150 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2005 Digital Design Corporation + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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 + */ + +/* Pre-RAM driver for SMSC LPC47N227 Super I/O chip. */ + +#include <arch/romcc_io.h> +#include "lpc47n227.h" + +//---------------------------------------------------------------------------------- +// Function: pnp_enter_conf_state +// Parameters: dev - high 8 bits = Super I/O port +// Return Value: None +// Description: Enable access to the LPC47N227's configuration registers. +// +static inline void pnp_enter_conf_state(device_t dev) +{ + unsigned port = dev >> 8; + outb(0x55, port); +} + +//---------------------------------------------------------------------------------- +// Function: pnp_exit_conf_state +// Parameters: dev - high 8 bits = Super I/O port +// Return Value: None +// Description: Disable access to the LPC47N227's configuration registers. +// +static void pnp_exit_conf_state(device_t dev) +{ + unsigned port = dev >> 8; + outb(0xaa, port); +} + +//---------------------------------------------------------------------------------- +// Function: lpc47n227_pnp_set_iobase +// Parameters: dev - high 8 bits = Super I/O port, +// low 8 bits = logical device number (per lpc47n227.h) +// iobase - base I/O port for the logical device +// Return Value: None +// Description: Program the base I/O port for the specified logical device. +// +void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase) +{ + // LPC47N227 requires base ports to be a multiple of 4 + ASSERT(!(iobase & 0x3)); + + switch (dev & 0xFF) { + case LPC47N227_PP: + pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff); + break; + + case LPC47N227_SP1: + pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff); + break; + + case LPC47N227_SP2: + pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff); + break; + + default: + break; + } +} + +//---------------------------------------------------------------------------------- +// Function: lpc47n227_pnp_set_enable +// Parameters: dev - high 8 bits = Super I/O port, +// low 8 bits = logical device number (per lpc47n227.h) +// enable - 0 to disable, anythig else to enable +// Return Value: None +// Description: Enable or disable the specified logical device. +// Technically, a full disable requires setting the device's base +// I/O port below 0x100. We don't do that here, because we don't +// have access to a data structure that specifies what the 'real' +// base port is (when asked to enable the device). Also the function +// is used only to disable the device while its true base port is +// programmed (see lpc47n227_enable_serial() below). +// +void lpc47n227_pnp_set_enable(device_t dev, int enable) +{ + uint8_t power_register = 0; + uint8_t power_mask = 0; + uint8_t current_power; + uint8_t new_power; + + switch (dev & 0xFF) { + case LPC47N227_PP: + power_register = 0x01; + power_mask = 0x04; + break; + + case LPC47N227_SP1: + power_register = 0x02; + power_mask = 0x08; + break; + + case LPC47N227_SP2: + power_register = 0x02; + power_mask = 0x80; + break; + + default: + return; + } + + current_power = pnp_read_config(dev, power_register); + new_power = current_power & ~power_mask; // disable by default + + if (enable) + new_power |= power_mask; // Enable + + pnp_write_config(dev, power_register, new_power); +} + +//---------------------------------------------------------------------------------- +// Function: lpc47n227_enable_serial +// Parameters: dev - high 8 bits = Super I/O port, +// low 8 bits = logical device number (per lpc47n227.h) +// iobase - processor I/O port address to assign to this serial device +// Return Value: bool +// Description: Configure the base I/O port of the specified serial device +// and enable the serial device. +// +static void lpc47n227_enable_serial(device_t dev, unsigned iobase) +{ + // NOTE: Cannot use pnp_set_XXX() here because they assume chip + // support for logical devices, which the LPC47N227 doesn't have + + pnp_enter_conf_state(dev); + lpc47n227_pnp_set_enable(dev, 0); + lpc47n227_pnp_set_iobase(dev, iobase); + lpc47n227_pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +}
Added: trunk/src/superio/smsc/lpc47n227/superio.c =================================================================== --- trunk/src/superio/smsc/lpc47n227/superio.c (rev 0) +++ trunk/src/superio/smsc/lpc47n227/superio.c 2010-01-17 13:50:17 UTC (rev 5027) @@ -0,0 +1,352 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2005 Digital Design Corporation + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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 + */ + +/* RAM-based driver for SMSC LPC47N227 Super I/O chip. */ + +#include <arch/io.h> +#include <device/device.h> +#include <device/pnp.h> +#include <console/console.h> +#include <device/smbus.h> +#include <string.h> +#include <bitops.h> +#include <uart8250.h> +#include <assert.h> +#include <stdlib.h> +#include "chip.h" +#include "lpc47n227.h" + +// Forward declarations +static void enable_dev(device_t dev); +void lpc47n227_pnp_set_resources(device_t dev); +void lpc47n227_pnp_enable_resources(device_t dev); +void lpc47n227_pnp_enable(device_t dev); +static void lpc47n227_init(device_t dev); + +static void lpc47n227_pnp_set_resource(device_t dev, struct resource *resource); +void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase); +void lpc47n227_pnp_set_drq(device_t dev, unsigned drq); +void lpc47n227_pnp_set_irq(device_t dev, unsigned irq); +void lpc47n227_pnp_set_enable(device_t dev, int enable); + +static void pnp_enter_conf_state(device_t dev); +static void pnp_exit_conf_state(device_t dev); + +struct chip_operations superio_smsc_lpc47n227_ops = { + CHIP_NAME("SMSC LPC47N227 Super I/O") + .enable_dev = enable_dev, +}; + +static struct device_operations ops = { + .read_resources = pnp_read_resources, + .set_resources = lpc47n227_pnp_set_resources, + .enable_resources = lpc47n227_pnp_enable_resources, + .enable = lpc47n227_pnp_enable, + .init = lpc47n227_init, +}; + +static struct pnp_info pnp_dev_info[] = { + {&ops, LPC47N227_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0},}, + {&ops, LPC47N227_SP1, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},}, + {&ops, LPC47N227_SP2, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},}, + {&ops, LPC47N227_KBDC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x7f8, 0}, + {0x7f8, 0x4},} +}; + +/**********************************************************************************/ +/* PUBLIC INTERFACE */ +/**********************************************************************************/ + +//---------------------------------------------------------------------------------- +// Function: enable_dev +// Parameters: dev - pointer to structure describing a Super I/O device +// Return Value: None +// Description: Create device structures and allocate resources to devices +// specified in the pnp_dev_info array (above). +// +static void enable_dev(device_t dev) +{ + pnp_enable_devices(dev, &pnp_ops, + ARRAY_SIZE(pnp_dev_info), pnp_dev_info); +} + +//---------------------------------------------------------------------------------- +// Function: lpc47n227_pnp_set_resources +// Parameters: dev - pointer to structure describing a Super I/O device +// Return Value: None +// Description: Configure the specified Super I/O device with the resources +// (I/O space, etc.) that have been allocate for it. +// +void lpc47n227_pnp_set_resources(device_t dev) +{ + int i; + + pnp_enter_conf_state(dev); + + // NOTE: Cannot use pnp_set_resources() here because it assumes chip + // support for logical devices, which the LPC47N227 doesn't have + for (i = 0; i < dev->resources; i++) + lpc47n227_pnp_set_resource(dev, &dev->resource[i]); + + pnp_exit_conf_state(dev); +} + +void lpc47n227_pnp_enable_resources(device_t dev) +{ + pnp_enter_conf_state(dev); + + // NOTE: Cannot use pnp_enable_resources() here because it assumes chip + // support for logical devices, which the LPC47N227 doesn't have + lpc47n227_pnp_set_enable(dev, 1); + + pnp_exit_conf_state(dev); +} + +void lpc47n227_pnp_enable(device_t dev) +{ + pnp_enter_conf_state(dev); + + // NOTE: Cannot use pnp_set_enable() here because it assumes chip + // support for logical devices, which the LPC47N227 doesn't have + + if (dev->enabled) { + lpc47n227_pnp_set_enable(dev, 1); + } else { + lpc47n227_pnp_set_enable(dev, 0); + } + + pnp_exit_conf_state(dev); +} + +//---------------------------------------------------------------------------------- +// Function: lpc47n227_init +// Parameters: dev - pointer to structure describing a Super I/O device +// Return Value: None +// Description: Initialize the specified Super I/O device. +// Devices other than COM ports and keyboard controller are ignored. +// For COM ports, we configure the baud rate. +// +static void lpc47n227_init(device_t dev) +{ + struct superio_smsc_lpc47n227_config *conf = dev->chip_info; + struct resource *res0; + + if (!dev->enabled) + return; + + switch (dev->path.pnp.device) { + case LPC47N227_SP1: + res0 = find_resource(dev, PNP_IDX_IO0); + init_uart8250(res0->base, &conf->com1); + break; + + case LPC47N227_SP2: + res0 = find_resource(dev, PNP_IDX_IO0); + init_uart8250(res0->base, &conf->com2); + break; + + case LPC47N227_KBDC: + printk_debug("LPC47N227: Initializing keyboard.\n"); + init_pc_keyboard(0x60, 0x64, &conf->keyboard); + break; + } +} + +/**********************************************************************************/ +/* PRIVATE FUNCTIONS */ +/**********************************************************************************/ + +static void lpc47n227_pnp_set_resource(device_t dev, struct resource *resource) +{ + if (!(resource->flags & IORESOURCE_ASSIGNED)) { + printk_err("ERROR: %s %02lx not allocated\n", + dev_path(dev), resource->index); + return; + } + + /* Now store the resource */ + // NOTE: Cannot use pnp_set_XXX() here because they assume chip + // support for logical devices, which the LPC47N227 doesn't have + + if (resource->flags & IORESOURCE_IO) { + lpc47n227_pnp_set_iobase(dev, resource->base); + } else if (resource->flags & IORESOURCE_DRQ) { + lpc47n227_pnp_set_drq(dev, resource->base); + } else if (resource->flags & IORESOURCE_IRQ) { + lpc47n227_pnp_set_irq(dev, resource->base); + } else { + printk_err("ERROR: %s %02lx unknown resource type\n", + dev_path(dev), resource->index); + return; + } + resource->flags |= IORESOURCE_STORED; + + report_resource_stored(dev, resource, ""); +} + +void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase) +{ + ASSERT(!(iobase & 0x3)); + + switch (dev->path.pnp.device) { + case LPC47N227_PP: + pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff); + break; + + case LPC47N227_SP1: + pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff); + break; + + case LPC47N227_SP2: + pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff); + break; + + case LPC47N227_KBDC: + break; + + default: + BUG(); + break; + } +} + +void lpc47n227_pnp_set_drq(device_t dev, unsigned drq) +{ + if (dev->path.pnp.device == LPC47N227_PP) { + const uint8_t PP_DMA_MASK = 0x0F; + const uint8_t PP_DMA_SELECTION_REGISTER = 0x26; + uint8_t current_config = + pnp_read_config(dev, PP_DMA_SELECTION_REGISTER); + uint8_t new_config; + + ASSERT(!(drq & ~PP_DMA_MASK)); // DRQ out of range?? + new_config = (current_config & ~PP_DMA_MASK) | drq; + pnp_write_config(dev, PP_DMA_SELECTION_REGISTER, new_config); + } else { + BUG(); + } +} + +void lpc47n227_pnp_set_irq(device_t dev, unsigned irq) +{ + uint8_t irq_config_register = 0; + uint8_t irq_config_mask = 0; + uint8_t current_config; + uint8_t new_config; + + switch (dev->path.pnp.device) { + case LPC47N227_PP: + irq_config_register = 0x27; + irq_config_mask = 0x0F; + break; + + case LPC47N227_SP1: + irq_config_register = 0x28; + irq_config_mask = 0xF0; + irq <<= 4; + break; + + case LPC47N227_SP2: + irq_config_register = 0x28; + irq_config_mask = 0x0F; + break; + + case LPC47N227_KBDC: + break; + + default: + BUG(); + return; + } + + current_config = pnp_read_config(dev, irq_config_register); + new_config = (current_config & ~irq_config_mask) | irq; + pnp_write_config(dev, irq_config_register, new_config); +} + +void lpc47n227_pnp_set_enable(device_t dev, int enable) +{ + uint8_t power_register = 0; + uint8_t power_mask = 0; + uint8_t current_power; + uint8_t new_power; + + switch (dev->path.pnp.device) { + case LPC47N227_PP: + power_register = 0x01; + power_mask = 0x04; + break; + + case LPC47N227_SP1: + power_register = 0x02; + power_mask = 0x08; + break; + + case LPC47N227_SP2: + power_register = 0x02; + power_mask = 0x80; + break; + + case LPC47N227_KBDC: + break; + + default: + BUG(); + return; + } + + current_power = pnp_read_config(dev, power_register); + new_power = current_power & ~power_mask; // disable by default + + if (enable) { + struct resource *ioport_resource = + find_resource(dev, PNP_IDX_IO0); + lpc47n227_pnp_set_iobase(dev, ioport_resource->base); + + new_power |= power_mask; // Enable + + } else { + lpc47n227_pnp_set_iobase(dev, 0); + } + pnp_write_config(dev, power_register, new_power); +} + +//---------------------------------------------------------------------------------- +// Function: pnp_enter_conf_state +// Parameters: dev - pointer to structure describing a Super I/O device +// Return Value: None +// Description: Enable access to the LPC47N227's configuration registers. +// +static void pnp_enter_conf_state(device_t dev) +{ + outb(0x55, dev->path.pnp.port); +} + +//---------------------------------------------------------------------------------- +// Function: pnp_exit_conf_state +// Parameters: dev - pointer to structure describing a Super I/O device +// Return Value: None +// Description: Disable access to the LPC47N227's configuration registers. +// +static void pnp_exit_conf_state(device_t dev) +{ + outb(0xaa, dev->path.pnp.port); +} +