59140ccdf3
Creator: Yinghai Lu <yhlu@tyan.com> write_pirq_routing_table for x86 git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1979 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
#include <console/console.h>
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#include <cpu/cpu.h>
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#include <boot/tables.h>
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#include <boot/linuxbios_tables.h>
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#include <arch/pirq_routing.h>
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#include <arch/smp/mpspec.h>
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#include <arch/acpi.h>
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#include "linuxbios_table.h"
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struct lb_memory *write_tables(void)
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{
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unsigned long low_table_start, low_table_end;
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unsigned long rom_table_start, rom_table_end;
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rom_table_start = 0xf0000;
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rom_table_end = 0xf0000;
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/* Start low addr at 16 bytes instead of 0 because of a buglet
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* in the generic linux unzip code, as it tests for the a20 line.
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*/
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low_table_start = 0;
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low_table_end = 16;
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post_code(0x9a);
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/* This table must be betweeen 0xf0000 & 0x100000 */
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rom_table_end = write_pirq_routing_table(rom_table_end);
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rom_table_end = (rom_table_end + 1023) & ~1023;
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/* copy the smp block to address 0 */
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post_code(0x96);
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/* The smp table must be in 0-1K, 639K-640K, or 960K-1M */
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low_table_end = write_smp_table(low_table_end);
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/* Write ACPI tables */
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/* write them in the rom area because DSDT can be large (8K on epia-m) which
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* pushes linuxbios table out of first 4K if set up in low table area
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*/
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rom_table_end = write_acpi_tables(rom_table_end);
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rom_table_end = (rom_table_end+1023) & ~1023;
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/* Don't write anything in the traditional x86 BIOS data segment */
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if (low_table_end < 0x500) {
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low_table_end = 0x500;
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}
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/* The linuxbios table must be in 0-4K or 960K-1M */
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write_linuxbios_table(
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low_table_start, low_table_end,
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rom_table_start >> 10, rom_table_end >> 10);
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return get_lb_mem();
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}
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