/* * 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 */ #include #include #include #include #include #include #include #include #include #include #include void cbmem_arch_init(void) { /* defined in gdt.c */ move_gdt(); } void 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_pointer; 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 beyond 0x400. Only GDT * and the coreboot table use low_tables. */ low_table_start = 0; low_table_end = 0x500; #if CONFIG_GENERATE_PIRQ_TABLE #define MAX_PIRQ_TABLE_SIZE (4 * 1024) post_code(0x9a); /* 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 */ high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_PIRQ, MAX_PIRQ_TABLE_SIZE); if (high_table_pointer) { unsigned long new_high_table_pointer; new_high_table_pointer = write_pirq_routing_table(high_table_pointer); // FIXME make pirq table code intelligent enough to know how // much space it's going to need. if (new_high_table_pointer > (high_table_pointer + MAX_PIRQ_TABLE_SIZE)) { printk(BIOS_ERR, "ERROR: Increase PIRQ size.\n"); } printk(BIOS_DEBUG, "PIRQ table: %ld bytes.\n", new_high_table_pointer - high_table_pointer); } #endif #if CONFIG_GENERATE_MP_TABLE #define MAX_MP_TABLE_SIZE (4 * 1024) post_code(0x9b); /* 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); high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_MPTABLE, MAX_MP_TABLE_SIZE); if (high_table_pointer) { unsigned long new_high_table_pointer; new_high_table_pointer = write_smp_table(high_table_pointer); // FIXME make mp table code intelligent enough to know how // much space it's going to need. if (new_high_table_pointer > (high_table_pointer + MAX_MP_TABLE_SIZE)) { printk(BIOS_ERR, "ERROR: Increase MP table size.\n"); } printk(BIOS_DEBUG, "MP table: %ld bytes.\n", new_high_table_pointer - high_table_pointer); } #endif /* CONFIG_GENERATE_MP_TABLE */ #if CONFIG_GENERATE_ACPI_TABLES #if CONFIG_DYNAMIC_CBMEM #define MAX_ACPI_SIZE (144 * 1024) #else #define MAX_ACPI_SIZE (45 * 1024) #endif post_code(0x9c); /* Write ACPI tables to F segment and high tables area */ /* Ok, this is a bit hacky still, because some day we want to have this * completely dynamic. But right now we are setting fixed sizes. * It's probably still better than the old high_table_base code because * now at least we know when we have an overflow in the area. * * We want to use 1MB - 64K for Resume backup. We use 512B for TOC and * 512 byte for GDT, 4K for PIRQ and 4K for MP table and 8KB for the * coreboot table. This leaves us with 47KB for all of ACPI. Let's see * how far we get. */ high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_ACPI, MAX_ACPI_SIZE); if (high_table_pointer) { unsigned long acpi_start = high_table_pointer; unsigned long new_high_table_pointer; rom_table_end = ALIGN(rom_table_end, 16); new_high_table_pointer = write_acpi_tables(high_table_pointer); if (new_high_table_pointer > ( high_table_pointer + MAX_ACPI_SIZE)) { printk(BIOS_ERR, "ERROR: Increase ACPI size\n"); } printk(BIOS_DEBUG, "ACPI tables: %ld bytes.\n", new_high_table_pointer - high_table_pointer); /* Now we need to create a low table copy of the RSDP. */ /* First we look for the high table RSDP */ while (acpi_start < new_high_table_pointer) { if (memcmp(((acpi_rsdp_t *)acpi_start)->signature, RSDP_SIG, 8) == 0) { break; } acpi_start++; } /* Now, if we found the RSDP, we take the RSDT and XSDT pointer * from it in order to write the low RSDP */ if (acpi_start < new_high_table_pointer) { 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 *)((unsigned long)high_rsdp->xsdt_address)); } else { printk(BIOS_ERR, "ERROR: Didn't find RSDP in high table.\n"); } 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 #define MAX_SMBIOS_SIZE 2048 #if CONFIG_GENERATE_SMBIOS_TABLES high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_SMBIOS, MAX_SMBIOS_SIZE); if (high_table_pointer) { unsigned long new_high_table_pointer; new_high_table_pointer = smbios_write_tables(high_table_pointer); rom_table_end = ALIGN(rom_table_end, 16); memcpy((void *)rom_table_end, (void *)high_table_pointer, sizeof(struct smbios_entry)); rom_table_end += sizeof(struct smbios_entry); if (new_high_table_pointer > ( high_table_pointer + MAX_SMBIOS_SIZE)) { printk(BIOS_ERR, "ERROR: Increase SMBIOS size\n"); } printk(BIOS_DEBUG, "SMBIOS tables: %ld bytes.\n", new_high_table_pointer - high_table_pointer); } else { unsigned long new_rom_table_end = smbios_write_tables(rom_table_end); printk(BIOS_DEBUG, "SMBIOS size %ld bytes\n", new_rom_table_end - rom_table_end); rom_table_end = ALIGN(new_rom_table_end, 16); } #endif post_code(0x9e); /* Let's prepare the ACPI S3 Resume area now already, so we can rely on * it begin there during reboot time. We don't need the pointer, nor * the result right now. If it fails, ACPI resume will be disabled. */ if (HIGH_MEMORY_SAVE && acpi_s3_resume_allowed()) cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE); if (HIGH_MEMORY_SCRATCH && acpi_s3_resume_allowed()) cbmem_add(CBMEM_ID_RESUME_SCRATCH, HIGH_MEMORY_SCRATCH); #define MAX_COREBOOT_TABLE_SIZE (32 * 1024) post_code(0x9d); high_table_pointer = (unsigned long)cbmem_add(CBMEM_ID_CBTABLE, MAX_COREBOOT_TABLE_SIZE); if (high_table_pointer) { unsigned long new_high_table_pointer; /* FIXME: The high_table_base parameter is not reference when tables are high, * or high_table_pointer >1 MB. */ #if CONFIG_DYNAMIC_CBMEM u64 fixme_high_tables_base = 0; #else u64 fixme_high_tables_base = (u32)get_cbmem_toc(); #endif /* Also put a forwarder entry into 0-4K */ new_high_table_pointer = write_coreboot_table(low_table_start, low_table_end, fixme_high_tables_base, high_table_pointer); if (new_high_table_pointer > (high_table_pointer + MAX_COREBOOT_TABLE_SIZE)) printk(BIOS_ERR, "%s: coreboot table didn't fit (%lx)\n", __func__, new_high_table_pointer - high_table_pointer); printk(BIOS_DEBUG, "coreboot table: %ld bytes.\n", new_high_table_pointer - high_table_pointer); } else { /* The coreboot table must be in 0-4K or 960K-1M */ rom_table_end = write_coreboot_table( low_table_start, low_table_end, rom_table_start, rom_table_end); } /* Print CBMEM sections */ cbmem_list(); }