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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 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.h>
#include "lpc.h"
#include <arch/io.h>
#include <arch/ioapic.h>
#include <console/console.h> /* printk */
#include <cbmem.h>
#define BIOSRAM_INDEX 0xcd4
#define BIOSRAM_DATA 0xcd5
void backup_top_of_ram(uint64_t ramtop)
{
u32 dword = (u32) ramtop;
int nvram_pos = 0xfc, i;
for (i = 0; i<4; i++) {
outb(nvram_pos, BIOSRAM_INDEX);
outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
nvram_pos++;
}
}
void lpc_read_resources(device_t dev)
{
struct resource *res;
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - Start.\n", __func__);
/* Get the normal pci resources of this device */
pci_dev_read_resources(dev); /* We got one for APIC, or one more for TRAP */
pci_get_resource(dev, SPIROM_BASE_ADDRESS); /* SPI ROM base address */
/* Add an extra subtractive resource for both memory and I/O. */
res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
res->base = 0;
res->size = 0x1000;
res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
res->base = 0xff800000;
res->size = 0x00800000; /* 8 MB for flash */
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, 3);
res->base = IO_APIC_ADDR;
res->size = 0x00001000;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
compact_resources(dev);
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - End.\n", __func__);
}
void lpc_set_resources(struct device *dev)
{
struct resource *res;
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - Start.\n", __func__);
pci_dev_set_resources(dev);
/* Specical case. SPI Base Address. The SpiRomEnable should be set. */
res = find_resource(dev, SPIROM_BASE_ADDRESS);
pci_write_config32(dev, SPIROM_BASE_ADDRESS, res->base | 1 << 1);
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - End.\n", __func__);
}
/**
* @brief Enable resources for children devices
*
* @param dev the device whos children's resources are to be enabled
*
*/
void lpc_enable_childrens_resources(device_t dev)
{
struct bus *link;
u32 reg, reg_x;
int var_num = 0;
u16 reg_var[3];
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - Start.\n", __func__);
reg = pci_read_config32(dev, 0x44);
reg_x = pci_read_config32(dev, 0x48);
for (link = dev->link_list; link; link = link->next) {
device_t child;
for (child = link->children; child;
child = child->sibling) {
if (child->enabled
&& (child->path.type == DEVICE_PATH_PNP)) {
struct resource *res;
for (res = child->resource_list; res; res = res->next) {
u32 base, end; /* don't need long long */
if (!(res->flags & IORESOURCE_IO))
continue;
base = res->base;
end = resource_end(res);
/*
printk(BIOS_DEBUG, "sb700 lpc decode:%s, base=0x%08x, end=0x%08x\n",
dev_path(child), base, end);
*/
switch (base) {
case 0x60: /* KB */
case 0x64: /* MS */
reg |= (1 << 29);
break;
case 0x3f8: /* COM1 */
reg |= (1 << 6);
break;
case 0x2f8: /* COM2 */
reg |= (1 << 7);
break;
case 0x378: /* Parallal 1 */
reg |= (1 << 0);
break;
case 0x3f0: /* FD0 */
reg |= (1 << 26);
break;
case 0x220: /* Aduio 0 */
reg |= (1 << 8);
break;
case 0x300: /* Midi 0 */
reg |= (1 << 18);
break;
case 0x400:
reg_x |= (1 << 16);
break;
case 0x480:
reg_x |= (1 << 17);
break;
case 0x500:
reg_x |= (1 << 18);
break;
case 0x580:
reg_x |= (1 << 19);
break;
case 0x4700:
reg_x |= (1 << 22);
break;
case 0xfd60:
reg_x |= (1 << 23);
break;
default:
if (var_num >= 3)
continue; /* only 3 var ; compact them ? */
switch (var_num) {
case 0:
reg_x |= (1 << 2);
break;
case 1:
reg_x |= (1 << 24);
break;
case 2:
reg_x |= (1 << 25);
break;
}
reg_var[var_num++] =
base & 0xffff;
}
}
}
}
}
pci_write_config32(dev, 0x44, reg);
pci_write_config32(dev, 0x48, reg_x);
/* Set WideIO for as many IOs found (fall through is on purpose) */
switch (var_num) {
case 2:
pci_write_config16(dev, 0x90, reg_var[2]);
case 1:
pci_write_config16(dev, 0x66, reg_var[1]);
case 0:
//pci_write_config16(dev, 0x64, reg_var[0]); //cause filo can not find sata
break;
}
printk(BIOS_SPEW, "SB700 - Lpc.c - %s - End.\n", __func__);
}
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