diff options
Diffstat (limited to 'src/southbridge/amd/pi/avalon/early_setup.c')
| -rw-r--r-- | src/southbridge/amd/pi/avalon/early_setup.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/southbridge/amd/pi/avalon/early_setup.c b/src/southbridge/amd/pi/avalon/early_setup.c new file mode 100644 index 0000000000..039df20c43 --- /dev/null +++ b/src/southbridge/amd/pi/avalon/early_setup.c @@ -0,0 +1,156 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 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 + */ + +#ifndef _HUDSON_EARLY_SETUP_C_ +#define _HUDSON_EARLY_SETUP_C_ + +#include <stdint.h> +#include <arch/io.h> +#include <arch/acpi.h> +#include <console/console.h> +#include <reset.h> +#include <arch/cpu.h> +#include <cbmem.h> +#include "hudson.h" + +void hudson_pci_port80(void) +{ + u8 byte; + device_t dev; + + /* P2P Bridge */ + dev = PCI_DEV(0, 0x14, 4); + + /* Chip Control: Enable subtractive decoding */ + byte = pci_read_config8(dev, 0x40); + byte |= 1 << 5; + pci_write_config8(dev, 0x40, byte); + + /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */ + byte = pci_read_config8(dev, 0x4B); + byte |= 1 << 7; + pci_write_config8(dev, 0x4B, byte); + + /* The same IO Base and IO Limit here is meaningful because we set the + * bridge to be subtractive. During early setup stage, we have to make + * sure that data can go through port 0x80. + */ + /* IO Base: 0xf000 */ + byte = pci_read_config8(dev, 0x1C); + byte |= 0xF << 4; + pci_write_config8(dev, 0x1C, byte); + + /* IO Limit: 0xf000 */ + byte = pci_read_config8(dev, 0x1D); + byte |= 0xF << 4; + pci_write_config8(dev, 0x1D, byte); + + /* PCI Command: Enable IO response */ + byte = pci_read_config8(dev, 0x04); + byte |= 1 << 0; + pci_write_config8(dev, 0x04, byte); + + /* LPC controller */ + dev = PCI_DEV(0, 0x14, 3); + + byte = pci_read_config8(dev, 0x4A); + byte &= ~(1 << 5); /* disable lpc port 80 */ + pci_write_config8(dev, 0x4A, byte); +} + +void hudson_lpc_port80(void) +{ + u8 byte; + device_t dev; + + /* Enable LPC controller */ + outb(0xEC, 0xCD6); + byte = inb(0xCD7); + byte |= 1; + outb(0xEC, 0xCD6); + outb(byte, 0xCD7); + + /* Enable port 80 LPC decode in pci function 3 configuration space. */ + dev = PCI_DEV(0, 0x14, 3); + byte = pci_read_config8(dev, 0x4a); + byte |= 1 << 5; /* enable port 80 */ + pci_write_config8(dev, 0x4a, byte); +} + +int s3_save_nvram_early(u32 dword, int size, int nvram_pos) +{ + int i; + printk(BIOS_DEBUG, "Writing %x of size %d to nvram pos: %d\n", dword, size, nvram_pos); + + for (i = 0; i<size; i++) { + outb(nvram_pos, BIOSRAM_INDEX); + outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA); + nvram_pos++; + } + + return nvram_pos; +} + +int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos) +{ + u32 data = *old_dword; + int i; + for (i = 0; i<size; i++) { + outb(nvram_pos, BIOSRAM_INDEX); + data &= ~(0xff << (i * 8)); + data |= inb(BIOSRAM_DATA) << (i *8); + nvram_pos++; + } + *old_dword = data; + printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", *old_dword, size, + nvram_pos-size); + return nvram_pos; +} + +#if CONFIG_HAVE_ACPI_RESUME +int acpi_get_sleep_type(void) +{ + u16 tmp = inw(ACPI_PM1_CNT_BLK); + tmp = ((tmp & (7 << 10)) >> 10); + /* printk(BIOS_DEBUG, "SLP_TYP type was %x\n", tmp); */ + return (int)tmp; +} +#endif + +#if CONFIG_HAVE_ACPI_RESUME +int acpi_is_wakeup_early(void) +{ + return (acpi_get_sleep_type() == 3); +} +#endif + +unsigned long get_top_of_ram(void) +{ + uint32_t xdata = 0; + int xnvram_pos = 0xf8, xi; + for (xi = 0; xi<4; xi++) { + outb(xnvram_pos, BIOSRAM_INDEX); + xdata &= ~(0xff << (xi * 8)); + xdata |= inb(BIOSRAM_DATA) << (xi *8); + xnvram_pos++; + } + return (unsigned long) xdata; +} + +#endif |