| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2003 Eric Biederman |
| * Copyright (C) 2005 Steve Magnani |
| * 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 |
| */ |
| |
| /* 2006.1 yhlu add mptable cross 0x467 processing */ |
| |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <boot/tables.h> |
| #include <boot/coreboot_tables.h> |
| #include <arch/pirq_routing.h> |
| #include <arch/smp/mpspec.h> |
| #include <arch/acpi.h> |
| #include <string.h> |
| #include <cpu/x86/multiboot.h> |
| #include "coreboot_table.h" |
| |
| // Global Descriptor Table, defined in c_start.S |
| extern uint8_t gdt; |
| extern uint8_t gdt_end; |
| |
| /* i386 lgdt argument */ |
| struct gdtarg { |
| unsigned short limit; |
| unsigned int base; |
| } __attribute__((packed)); |
| |
| // Copy GDT to new location and reload it |
| void move_gdt(unsigned long newgdt) |
| { |
| uint16_t num_gdt_bytes = &gdt_end - &gdt; |
| struct gdtarg gdtarg; |
| |
| printk_debug("Moving GDT to %#lx...", newgdt); |
| memcpy((void*)newgdt, &gdt, num_gdt_bytes); |
| gdtarg.base = newgdt; |
| gdtarg.limit = num_gdt_bytes - 1; |
| __asm__ __volatile__ ("lgdt %0\n\t" : : "m" (gdtarg)); |
| printk_debug("ok\n"); |
| } |
| |
| uint64_t high_tables_base = 0; |
| uint64_t high_tables_size; |
| |
| struct lb_memory *write_tables(void) |
| { |
| unsigned long low_table_start, low_table_end; |
| unsigned long rom_table_start, rom_table_end; |
| |
| /* Even if high tables are configured, some tables are copied both to |
| * the low and the high area, so payloads and OSes don't need to know |
| * about the high tables. |
| */ |
| unsigned long high_table_end=0; |
| |
| if (high_tables_base) { |
| printk_debug("High Tables Base is %llx.\n", high_tables_base); |
| high_table_end = high_tables_base; |
| } else { |
| printk_err("ERROR: High Tables Base is not set.\n"); |
| } |
| |
| rom_table_start = 0xf0000; |
| rom_table_end = 0xf0000; |
| |
| /* Start low addr at 0x500, so we don't run into conflicts with the BDA |
| * in case our data structures grow beyound 0x400. Only multiboot, GDT |
| * and the coreboot table use low_tables. |
| */ |
| low_table_start = 0; |
| low_table_end = 0x500; |
| |
| post_code(0x99); |
| |
| /* This table must be between 0x0f0000 and 0x100000 */ |
| rom_table_end = write_pirq_routing_table(rom_table_end); |
| rom_table_end = ALIGN(rom_table_end, 1024); |
| |
| /* And add a high table version for those payloads that |
| * want to live in the F segment |
| */ |
| if (high_tables_base) { |
| high_table_end = write_pirq_routing_table(high_table_end); |
| high_table_end = ALIGN(high_table_end, 1024); |
| } |
| |
| post_code(0x9a); |
| |
| /* Write ACPI tables to F segment and high tables area */ |
| #if CONFIG_HAVE_ACPI_TABLES == 1 |
| if (high_tables_base) { |
| unsigned long acpi_start = high_table_end; |
| rom_table_end = ALIGN(rom_table_end, 16); |
| high_table_end = write_acpi_tables(high_table_end); |
| while (acpi_start < high_table_end) { |
| if (memcmp(((acpi_rsdp_t *)acpi_start)->signature, RSDP_SIG, 8) == 0) { |
| break; |
| } |
| acpi_start++; |
| } |
| if (acpi_start != high_table_end) { |
| acpi_rsdp_t *low_rsdp = (acpi_rsdp_t *)rom_table_end, |
| *high_rsdp = (acpi_rsdp_t *)acpi_start; |
| |
| acpi_write_rsdp(low_rsdp, |
| (acpi_rsdt_t *)(high_rsdp->rsdt_address), |
| (acpi_xsdt_t *)(high_rsdp->xsdt_address)); |
| } else { |
| printk_err("ERROR: Didn't find RSDP in high table.\n"); |
| } |
| high_table_end = ALIGN(high_table_end, 1024); |
| rom_table_end = ALIGN(rom_table_end + sizeof(acpi_rsdp_t), 16); |
| } else { |
| rom_table_end = write_acpi_tables(rom_table_end); |
| rom_table_end = ALIGN(rom_table_end, 1024); |
| } |
| #endif |
| post_code(0x9b); |
| |
| #if CONFIG_HAVE_MP_TABLE == 1 |
| /* The smp table must be in 0-1K, 639K-640K, or 960K-1M */ |
| rom_table_end = write_smp_table(rom_table_end); |
| rom_table_end = ALIGN(rom_table_end, 1024); |
| |
| /* ... and a copy in the high tables */ |
| if (high_tables_base) { |
| high_table_end = write_smp_table(high_table_end); |
| high_table_end = ALIGN(high_table_end, 1024); |
| } |
| #endif /* CONFIG_HAVE_MP_TABLE */ |
| |
| post_code(0x9c); |
| |
| // Relocate the GDT to reserved memory, so it won't get clobbered |
| if (high_tables_base) { |
| move_gdt(high_table_end); |
| high_table_end += &gdt_end - &gdt; |
| high_table_end = ALIGN(high_table_end, 1024); |
| } else { |
| move_gdt(low_table_end); |
| low_table_end += &gdt_end - &gdt; |
| } |
| |
| post_code(0x9d); |
| |
| #if CONFIG_MULTIBOOT |
| /* The Multiboot information structure */ |
| rom_table_end = write_multiboot_info( |
| low_table_start, low_table_end, |
| rom_table_start, rom_table_end); |
| #endif |
| |
| post_code(0x9e); |
| |
| if (high_tables_base) { |
| /* Also put a forwarder entry into 0-4K */ |
| write_coreboot_table(low_table_start, low_table_end, |
| high_tables_base, high_table_end); |
| if (high_table_end > high_tables_base + high_tables_size) |
| printk_err("%s: High tables didn't fit in %llx (%llx)\n", |
| __func__, high_tables_size, high_table_end - |
| high_tables_base); |
| } else { |
| /* The coreboot table must be in 0-4K or 960K-1M */ |
| write_coreboot_table(low_table_start, low_table_end, |
| rom_table_start, rom_table_end); |
| } |
| |
| post_code(0x9f); |
| |
| return get_lb_mem(); |
| } |