Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4628
-gerrit
commit 7b394098324f1d2b9f6988ac76fffed32423ae1f Author: Vladimir Serbinenko phcoder@gmail.com Date: Mon Jan 6 20:40:27 2014 +0100
Multiboot: remove multiboot tables generation.
GRUB2-as-payload doesn't use them. Libpayload can live with just coreboot tables if loaded as payload. memtest86+ can use them but is buggy with them. Solaris needs a huge boot archive not supported by coreboot and too big to fit in flash (dozens of megabytes). All-in-all looks like no users are left for this.
Change-Id: Id92f73be5a397db80f5b0132ee57c37ee6eeb563 Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/Kconfig | 5 -- src/arch/x86/boot/Makefile.inc | 1 - src/arch/x86/boot/boot.c | 8 -- src/arch/x86/boot/multiboot.c | 76 ----------------- src/arch/x86/boot/tables.c | 10 +-- src/include/cpu/x86/multiboot.h | 184 ---------------------------------------- 6 files changed, 1 insertion(+), 283 deletions(-)
diff --git a/src/Kconfig b/src/Kconfig index 88df9ae..d427e15 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -469,11 +469,6 @@ config MAX_PIRQ_LINKS
menu "System tables"
-config MULTIBOOT - bool "Generate Multiboot tables (for GRUB2)" - default y - depends on ARCH_X86 - config GENERATE_ACPI_TABLES prompt "Generate ACPI tables" if HAVE_ACPI_TABLES bool diff --git a/src/arch/x86/boot/Makefile.inc b/src/arch/x86/boot/Makefile.inc index 3e53d79..629c644 100644 --- a/src/arch/x86/boot/Makefile.inc +++ b/src/arch/x86/boot/Makefile.inc @@ -2,7 +2,6 @@ romstage-$(CONFIG_EARLY_CBMEM_INIT) += cbmem.c romstage-$(CONFIG_HAVE_ACPI_RESUME) += cbmem.c
ramstage-y += boot.c -ramstage-$(CONFIG_MULTIBOOT) += multiboot.c ramstage-y += gdt.c ramstage-y += tables.c ramstage-y += cbmem.c diff --git a/src/arch/x86/boot/boot.c b/src/arch/x86/boot/boot.c index 1b28a4c..3ef46a5 100644 --- a/src/arch/x86/boot/boot.c +++ b/src/arch/x86/boot/boot.c @@ -2,7 +2,6 @@ #include <arch/stages.h> #include <ip_checksum.h> #include <string.h> -#include <cpu/x86/multiboot.h>
#if CONFIG_RELOCATABLE_RAMSTAGE /* When the ramstage is relocatable the elf loading ensures an elf image cannot @@ -21,9 +20,6 @@ void jmp_to_elf_entry(void *entry, unsigned long unused1, unsigned long unused2)
:: "r" (entry) -#if CONFIG_MULTIBOOT - , "b"(mbi), "a" (MB_MAGIC2) -#endif ); } #else @@ -123,11 +119,7 @@ void jmp_to_elf_entry(void *entry, unsigned long buffer, unsigned long size) :: "ri" (lb_start), "ri" (buffer), "ri" (lb_size), "ri" (entry), -#if CONFIG_MULTIBOOT - "ri"(mbi), "ri" (MB_MAGIC2) -#else "ri"(0), "ri" (0) -#endif ); } #endif /* CONFIG_RELOCATABLE_RAMSTAGE */ diff --git a/src/arch/x86/boot/multiboot.c b/src/arch/x86/boot/multiboot.c deleted file mode 100644 index a043e60..0000000 --- a/src/arch/x86/boot/multiboot.c +++ /dev/null @@ -1,76 +0,0 @@ -/* - * support for Multiboot payloads - * - * Copyright (C) 2008 Robert Millan - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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, see http://www.gnu.org/licenses/. - * - */ - -#include <cpu/x86/multiboot.h> -#include <string.h> -#include <device/resource.h> -#include <console/console.h> -#include <boot/coreboot_tables.h> - -struct multiboot_info *mbi = NULL; - -unsigned long write_multiboot_info(unsigned long rom_table_end) -{ - static struct multiboot_mmap_entry *mb_mem; - struct lb_memory* coreboot_table; - int entries; - int i; - - mbi = (struct multiboot_info *)rom_table_end; - - memset(mbi, 0, sizeof(*mbi)); - rom_table_end += sizeof(*mbi); - - mbi->mmap_addr = (u32) rom_table_end; - mb_mem = (struct multiboot_mmap_entry *)rom_table_end; - - /* copy regions from coreboot tables */ - coreboot_table = get_lb_mem(); - entries = (coreboot_table->size - sizeof(*coreboot_table))/sizeof(coreboot_table->map[0]); - - if (coreboot_table == NULL || entries < 1) { - printk(BIOS_INFO, "%s: Cannot find coreboot table.\n", __func__); - return (unsigned long) mb_mem; - } - - for (i = 0; i < entries; i++) { - uint64_t entry_start = unpack_lb64(coreboot_table->map[i].start); - uint64_t entry_size = unpack_lb64(coreboot_table->map[i].size); - mb_mem->addr = entry_start; - mb_mem->len = entry_size; - switch (coreboot_table->map[i].type) { - case LB_MEM_RAM: - mb_mem->type = MULTIBOOT_MEMORY_AVAILABLE; - break; - default: // anything other than usable RAM - mb_mem->type = MULTIBOOT_MEMORY_RESERVED; - break; - } - mb_mem->size = sizeof(*mb_mem) - sizeof(mb_mem->size); - mb_mem++; - } - - mbi->mmap_length = ((u32) mb_mem) - mbi->mmap_addr; - mbi->flags |= MB_INFO_MEM_MAP; - - printk(BIOS_INFO, "Multiboot Information structure has been written.\n"); - - return (unsigned long)mb_mem; -} diff --git a/src/arch/x86/boot/tables.c b/src/arch/x86/boot/tables.c index eea9bf1..b420a7c 100644 --- a/src/arch/x86/boot/tables.c +++ b/src/arch/x86/boot/tables.c @@ -27,7 +27,6 @@ #include <arch/smp/mpspec.h> #include <arch/acpi.h> #include <string.h> -#include <cpu/x86/multiboot.h> #include <cbmem.h> #include <lib.h> #include <smbios.h> @@ -58,7 +57,7 @@ struct lb_memory *write_tables(void) 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 multiboot, GDT + * in case our data structures grow beyond 0x400. Only GDT * and the coreboot table use low_tables. */ low_table_start = 0; @@ -247,13 +246,6 @@ struct lb_memory *write_tables(void) rom_table_start, rom_table_end); }
-#if CONFIG_MULTIBOOT - post_code(0x9d); - - /* The Multiboot information structure */ - write_multiboot_info(rom_table_end); -#endif - /* Print CBMEM sections */ cbmem_list();
diff --git a/src/include/cpu/x86/multiboot.h b/src/include/cpu/x86/multiboot.h deleted file mode 100644 index 7bc25a9..0000000 --- a/src/include/cpu/x86/multiboot.h +++ /dev/null @@ -1,184 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2003 Free Software Foundation, Inc. - * Copyright (C) 2008 Robert Millan - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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 - */ - -/* - * multiboot.h - multiboot header file. - */ - -#ifndef MULTIBOOT_H -#define MULTIBOOT_H - -#include <stdint.h> - -/* How many bytes from the start of the file we search for the header. */ -#define MB_SEARCH 8192 - -/* The magic field should contain this. */ -#define MB_MAGIC 0x1BADB002 - -/* This should be in %eax. */ -#define MB_MAGIC2 0x2BADB002 - -/* The bits in the required part of flags field we don't support. */ -#define MB_UNSUPPORTED 0x0000fffc - -/* Alignment of multiboot modules. */ -#define MB_MOD_ALIGN 0x00001000 - -/* - * Flags set in the 'flags' member of the multiboot header. - */ - -/* Align all boot modules on i386 page (4KB) boundaries. */ -#define MB_PAGE_ALIGN 0x00000001 - -/* Must pass memory information to OS. */ -#define MB_MEMORY_INFO 0x00000002 - -/* Must pass video information to OS. */ -#define MB_VIDEO_MODE 0x00000004 - -/* This flag indicates the use of the address fields in the header. */ -#define MB_AOUT_KLUDGE 0x00010000 - -/* - * Flags to be set in the 'flags' member of the multiboot info structure. - */ - -/* is there basic lower/upper memory information? */ -#define MB_INFO_MEMORY 0x00000001 -/* is there a boot device set? */ -#define MB_INFO_BOOTDEV 0x00000002 -/* is the command-line defined? */ -#define MB_INFO_CMDLINE 0x00000004 -/* are there modules to do something with? */ -#define MB_INFO_MODS 0x00000008 - -/* These next two are mutually exclusive */ - -/* is there a symbol table loaded? */ -#define MB_INFO_AOUT_SYMS 0x00000010 -/* is there an ELF section header table? */ -#define MB_INFO_ELF_SHDR 0x00000020 - -/* is there a full memory map? */ -#define MB_INFO_MEM_MAP 0x00000040 - -/* Is there drive info? */ -#define MB_INFO_DRIVE_INFO 0x00000080 - -/* Is there a config table? */ -#define MB_INFO_CONFIG_TABLE 0x00000100 - -/* Is there a boot loader name? */ -#define MB_INFO_BOOT_LOADER_NAME 0x00000200 - -/* Is there a APM table? */ -#define MB_INFO_APM_TABLE 0x00000400 - -/* Is there video information? */ -#define MB_INFO_VIDEO_INFO 0x00000800 - -struct multiboot_header { - /* Must be MB_MAGIC - see above. */ - uint32_t magic; - - /* Feature flags. */ - uint32_t flags; - - /* The above fields plus this one must equal 0 mod 2^32. */ - uint32_t checksum; - - /* These are only valid if MB_AOUT_KLUDGE is set. */ - uint32_t header_addr; - uint32_t load_addr; - uint32_t load_end_addr; - uint32_t bss_end_addr; - uint32_t entry_addr; - - /* These are only valid if MB_VIDEO_MODE is set. */ - uint32_t mode_type; - uint32_t width; - uint32_t height; - uint32_t depth; -}; - -struct multiboot_info { - /* Multiboot info version number */ - uint32_t flags; - - /* Available memory from BIOS */ - uint32_t mem_lower; - uint32_t mem_upper; - - /* "root" partition */ - uint32_t boot_device; - - /* Kernel command line */ - uint32_t cmdline; - - /* Boot-Module list */ - uint32_t mods_count; - uint32_t mods_addr; - - uint32_t syms[4]; - - /* Memory Mapping buffer */ - uint32_t mmap_length; - uint32_t mmap_addr; - - /* Drive Info buffer */ - uint32_t drives_length; - uint32_t drives_addr; - - /* ROM configuration table */ - uint32_t config_table; - - /* Boot Loader Name */ - uint32_t boot_loader_name; - - /* APM table */ - uint32_t apm_table; - - /* Video */ - uint32_t vbe_control_info; - uint32_t vbe_mode_info; - uint16_t vbe_mode; - uint16_t vbe_interface_seg; - uint16_t vbe_interface_off; - uint16_t vbe_interface_len; -}; - -#define MULTIBOOT_MEMORY_AVAILABLE 1 -#define MULTIBOOT_MEMORY_RESERVED 2 - -struct multiboot_mmap_entry { - uint32_t size; - uint64_t addr; - uint64_t len; - uint32_t type; -} __attribute__ ((packed)); - -extern struct multiboot_info *mbi; - -unsigned long write_multiboot_info(unsigned long rom_table_end); - -#endif