diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rwxr-xr-x | scripts/layoutrom.py | 8 | ||||
| -rw-r--r-- | src/Kconfig | 7 | ||||
| -rw-r--r-- | src/fw/multiboot.c | 111 | ||||
| -rw-r--r-- | src/post.c | 1 | ||||
| -rw-r--r-- | src/romlayout.S | 2 | ||||
| -rw-r--r-- | src/std/multiboot.h | 260 | ||||
| -rw-r--r-- | src/util.h | 3 |
8 files changed, 393 insertions, 1 deletions
@@ -40,7 +40,7 @@ SRC16=$(SRCBOTH) SRC32FLAT=$(SRCBOTH) post.c memmap.c malloc.c romfile.c x86.c optionroms.c \ pmm.c font.c boot.c bootsplash.c jpeg.c bmp.c tcgbios.c sha1.c \ hw/ahci.c hw/pvscsi.c hw/usb-xhci.c hw/usb-hub.c hw/sdcard.c \ - fw/coreboot.c fw/lzmadecode.c fw/csm.c fw/biostables.c \ + fw/coreboot.c fw/lzmadecode.c fw/multiboot.c fw/csm.c fw/biostables.c \ fw/paravirt.c fw/shadow.c fw/pciinit.c fw/smm.c fw/smp.c fw/mtrr.c fw/xen.c \ fw/acpi.c fw/mptable.c fw/pirtable.c fw/smbios.c fw/romfile_loader.c \ hw/tpm_drivers.c diff --git a/scripts/layoutrom.py b/scripts/layoutrom.py index dd770fe..b976fb0 100755 --- a/scripts/layoutrom.py +++ b/scripts/layoutrom.py @@ -161,6 +161,7 @@ def getSectionsPrefix(sections, prefix): # The sections (and associated information) to be placed in output rom class LayoutInfo: sections = None + config = None genreloc = None sec32init_start = sec32init_end = sec32init_align = None sec32low_start = sec32low_end = None @@ -172,6 +173,7 @@ class LayoutInfo: # Determine final memory addresses for sections def doLayout(sections, config, genreloc): li = LayoutInfo() + li.config = config li.sections = sections li.genreloc = genreloc # Determine 16bit positions @@ -399,6 +401,10 @@ def writeLinkerScripts(li, out16, out32seg, out32flat): filesections32flat = getSectionsFileid(li.sections, '32flat') out = outXRefs([], exportsyms=li.varlowsyms , forcedelta=li.final_sec32low_start-li.sec32low_start) + multiboot_header = "" + if li.config.get('CONFIG_MULTIBOOT'): + multiboot_header = "LONG(0x1BADB002) LONG(0) LONG(-0x1BADB002)" + sec32all_start -= 3 * 4 out += outXRefs(filesections32flat, exportsyms=[li.entrysym]) + """ _reloc_min_align = 0x%x ; zonefseg_start = 0x%x ; @@ -415,6 +421,7 @@ def writeLinkerScripts(li, out16, out32seg, out32flat): .text code32flat_start : { %s %s +%s code32flat_end = ABSOLUTE(.) ; } :text """ % (li.sec32init_align, @@ -428,6 +435,7 @@ def writeLinkerScripts(li, out16, out32seg, out32flat): li.sec32init_start, li.sec32init_end, sec32all_start, + multiboot_header, relocstr, outRelSections(li.sections, 'code32flat_start')) out = COMMONHEADER + out + COMMONTRAILER + """ diff --git a/src/Kconfig b/src/Kconfig index 19f4db1..14c38fb 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -102,6 +102,13 @@ endchoice default y help Support floppy images in coreboot flash. + config MULTIBOOT + depends on COREBOOT + bool "multiboot support" + default y + help + Add multiboot header in bios.bin.raw and accept files supplied + as multiboot modules. config ENTRY_EXTRASTACK bool "Use internal stack for 16bit interrupt entry points" default y diff --git a/src/fw/multiboot.c b/src/fw/multiboot.c new file mode 100644 index 0000000..d9df067 --- /dev/null +++ b/src/fw/multiboot.c @@ -0,0 +1,111 @@ +// Multiboot interface support. +// +// Copyright (C) 2015 Vladimir Serbinenko <phcoder@gmail.com> +// +// This file may be distributed under the terms of the GNU LGPLv3 license. + +#include "config.h" // CONFIG_* +#include "malloc.h" // free +#include "output.h" // dprintf +#include "romfile.h" // romfile_add +#include "std/multiboot.h" // MULTIBOOT_* +#include "string.h" // memset +#include "util.h" // multiboot_init + +struct mbfs_romfile_s { + struct romfile_s file; + void *data; +}; + +static int +extract_filename(char *dest, char *src, size_t lim) +{ + char *ptr; + for (ptr = src; *ptr; ptr++) { + if (!(ptr == src || ptr[-1] == ' ' || ptr[-1] == '\t')) + continue; + /* memcmp stops early if it encounters \0 as it doesn't match name=. */ + if (memcmp(ptr, "name=", 5) == 0) { + int i; + char *optr = dest; + for (i = 0, ptr += 5; *ptr && *ptr != ' ' && i < lim; i++) { + *optr++ = *ptr++; + } + *optr++ = '\0'; + return 1; + } + } + return 0; +} + +// Copy a file to memory +static int +mbfs_copyfile(struct romfile_s *file, void *dst, u32 maxlen) +{ + struct mbfs_romfile_s *cfile; + cfile = container_of(file, struct mbfs_romfile_s, file); + u32 size = cfile->file.size; + void *src = cfile->data; + + // Not compressed. + dprintf(3, "Copying data %d@%p to %d@%p\n", size, src, maxlen, dst); + if (size > maxlen) { + warn_noalloc(); + return -1; + } + iomemcpy(dst, src, size); + return size; +} + +u32 __VISIBLE entry_elf_eax, entry_elf_ebx; + +void +multiboot_init(void) +{ + struct multiboot_info *mbi; + if (!CONFIG_MULTIBOOT) + return; + dprintf(1, "multiboot: eax=%x, ebx=%x\n", entry_elf_eax, entry_elf_ebx); + if (entry_elf_eax != MULTIBOOT_BOOTLOADER_MAGIC) + return; + mbi = (void *)entry_elf_ebx; + dprintf(1, "mbptr=%p\n", mbi); + dprintf(1, "flags=0x%x, mods=0x%x, mods_c=%d\n", mbi->flags, mbi->mods_addr, + mbi->mods_count); + if (!(mbi->flags & MULTIBOOT_INFO_MODS)) + return; + int i; + struct multiboot_mod_list *mod = (void *)mbi->mods_addr; + for (i = 0; i < mbi->mods_count; i++) { + struct mbfs_romfile_s *cfile; + u8 *copy; + u32 len; + if (!mod[i].cmdline) + continue; + len = mod[i].mod_end - mod[i].mod_start; + cfile = malloc_tmp(sizeof(*cfile)); + if (!cfile) { + warn_noalloc(); + return; + } + memset(cfile, 0, sizeof(*cfile)); + dprintf(1, "module %s, size 0x%x\n", (char *)mod[i].cmdline, len); + if (!extract_filename(cfile->file.name, (char *)mod[i].cmdline, + sizeof(cfile->file.name))) { + free(cfile); + continue; + } + dprintf(1, "assigned file name <%s>\n", cfile->file.name); + cfile->file.size = len; + copy = malloc_tmp(len); + if (!copy) { + warn_noalloc(); + free(cfile); + return; + } + memcpy(copy, (void *)mod[i].mod_start, len); + cfile->file.copy = mbfs_copyfile; + cfile->data = copy; + romfile_add(&cfile->file); + } +} @@ -117,6 +117,7 @@ interface_init(void) // Setup romfile items. qemu_cfg_init(); coreboot_cbfs_init(); + multiboot_init(); // Setup ivt/bda/ebda ivt_init(); diff --git a/src/romlayout.S b/src/romlayout.S index 93b6874..7938e22 100644 --- a/src/romlayout.S +++ b/src/romlayout.S @@ -374,6 +374,8 @@ entry_bios32: entry_elf: cli cld + movl %eax, entry_elf_eax + movl %ebx, entry_elf_ebx lidtl (BUILD_BIOS_ADDR + pmode_IDT_info) lgdtl (BUILD_BIOS_ADDR + rombios32_gdt_48) movl $SEG32_MODE32_DS, %eax diff --git a/src/std/multiboot.h b/src/std/multiboot.h new file mode 100644 index 0000000..6c95127 --- /dev/null +++ b/src/std/multiboot.h @@ -0,0 +1,260 @@ +/* multiboot.h - Multiboot header file. */ +/* Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY + * DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR + * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef MULTIBOOT_HEADER +#define MULTIBOOT_HEADER 1 + +/* How many bytes from the start of the file we search for the header. */ +#define MULTIBOOT_SEARCH 8192 +#define MULTIBOOT_HEADER_ALIGN 4 + +/* The magic field should contain this. */ +#define MULTIBOOT_HEADER_MAGIC 0x1BADB002 + +/* This should be in %eax. */ +#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 + +/* Alignment of multiboot modules. */ +#define MULTIBOOT_MOD_ALIGN 0x00001000 + +/* Alignment of the multiboot info structure. */ +#define MULTIBOOT_INFO_ALIGN 0x00000004 + +/* Flags set in the 'flags' member of the multiboot header. */ + +/* Align all boot modules on i386 page (4KB) boundaries. */ +#define MULTIBOOT_PAGE_ALIGN 0x00000001 + +/* Must pass memory information to OS. */ +#define MULTIBOOT_MEMORY_INFO 0x00000002 + +/* Must pass video information to OS. */ +#define MULTIBOOT_VIDEO_MODE 0x00000004 + +/* This flag indicates the use of the address fields in the header. */ +#define MULTIBOOT_AOUT_KLUDGE 0x00010000 + +/* Flags to be set in the 'flags' member of the multiboot info structure. */ + +/* is there basic lower/upper memory information? */ +#define MULTIBOOT_INFO_MEMORY 0x00000001 +/* is there a boot device set? */ +#define MULTIBOOT_INFO_BOOTDEV 0x00000002 +/* is the command-line defined? */ +#define MULTIBOOT_INFO_CMDLINE 0x00000004 +/* are there modules to do something with? */ +#define MULTIBOOT_INFO_MODS 0x00000008 + +/* These next two are mutually exclusive */ + +/* is there a symbol table loaded? */ +#define MULTIBOOT_INFO_AOUT_SYMS 0x00000010 +/* is there an ELF section header table? */ +#define MULTIBOOT_INFO_ELF_SHDR 0X00000020 + +/* is there a full memory map? */ +#define MULTIBOOT_INFO_MEM_MAP 0x00000040 + +/* Is there drive info? */ +#define MULTIBOOT_INFO_DRIVE_INFO 0x00000080 + +/* Is there a config table? */ +#define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100 + +/* Is there a boot loader name? */ +#define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200 + +/* Is there a APM table? */ +#define MULTIBOOT_INFO_APM_TABLE 0x00000400 + +/* Is there video information? */ +#define MULTIBOOT_INFO_VBE_INFO 0x00000800 +#define MULTIBOOT_INFO_FRAMEBUFFER_INFO 0x00001000 + +#ifndef ASM_FILE + +typedef unsigned char multiboot_uint8_t; +typedef unsigned short multiboot_uint16_t; +typedef unsigned int multiboot_uint32_t; +typedef unsigned long long multiboot_uint64_t; + +struct multiboot_header +{ + /* Must be MULTIBOOT_MAGIC - see above. */ + multiboot_uint32_t magic; + + /* Feature flags. */ + multiboot_uint32_t flags; + + /* The above fields plus this one must equal 0 mod 2^32. */ + multiboot_uint32_t checksum; + + /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */ + multiboot_uint32_t header_addr; + multiboot_uint32_t load_addr; + multiboot_uint32_t load_end_addr; + multiboot_uint32_t bss_end_addr; + multiboot_uint32_t entry_addr; + + /* These are only valid if MULTIBOOT_VIDEO_MODE is set. */ + multiboot_uint32_t mode_type; + multiboot_uint32_t width; + multiboot_uint32_t height; + multiboot_uint32_t depth; +}; + +/* The symbol table for a.out. */ +struct multiboot_aout_symbol_table +{ + multiboot_uint32_t tabsize; + multiboot_uint32_t strsize; + multiboot_uint32_t addr; + multiboot_uint32_t reserved; +}; +typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t; + +/* The section header table for ELF. */ +struct multiboot_elf_section_header_table +{ + multiboot_uint32_t num; + multiboot_uint32_t size; + multiboot_uint32_t addr; + multiboot_uint32_t shndx; +}; +typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t; + +struct multiboot_info +{ + /* Multiboot info version number */ + multiboot_uint32_t flags; + + /* Available memory from BIOS */ + multiboot_uint32_t mem_lower; + multiboot_uint32_t mem_upper; + + /* "root" partition */ + multiboot_uint32_t boot_device; + + /* Kernel command line */ + multiboot_uint32_t cmdline; + + /* Boot-Module list */ + multiboot_uint32_t mods_count; + multiboot_uint32_t mods_addr; + + union + { + multiboot_aout_symbol_table_t aout_sym; + multiboot_elf_section_header_table_t elf_sec; + } u; + + /* Memory Mapping buffer */ + multiboot_uint32_t mmap_length; + multiboot_uint32_t mmap_addr; + + /* Drive Info buffer */ + multiboot_uint32_t drives_length; + multiboot_uint32_t drives_addr; + + /* ROM configuration table */ + multiboot_uint32_t config_table; + + /* Boot Loader Name */ + multiboot_uint32_t boot_loader_name; + + /* APM table */ + multiboot_uint32_t apm_table; + + /* Video */ + multiboot_uint32_t vbe_control_info; + multiboot_uint32_t vbe_mode_info; + multiboot_uint16_t vbe_mode; + multiboot_uint16_t vbe_interface_seg; + multiboot_uint16_t vbe_interface_off; + multiboot_uint16_t vbe_interface_len; + + multiboot_uint64_t framebuffer_addr; + multiboot_uint32_t framebuffer_pitch; + multiboot_uint32_t framebuffer_width; + multiboot_uint32_t framebuffer_height; + multiboot_uint8_t framebuffer_bpp; +#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0 +#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1 +#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2 + multiboot_uint8_t framebuffer_type; + union + { + struct + { + multiboot_uint32_t framebuffer_palette_addr; + multiboot_uint16_t framebuffer_palette_num_colors; + }; + struct + { + multiboot_uint8_t framebuffer_red_field_position; + multiboot_uint8_t framebuffer_red_mask_size; + multiboot_uint8_t framebuffer_green_field_position; + multiboot_uint8_t framebuffer_green_mask_size; + multiboot_uint8_t framebuffer_blue_field_position; + multiboot_uint8_t framebuffer_blue_mask_size; + }; + }; +}; +typedef struct multiboot_info multiboot_info_t; + +struct multiboot_color +{ + multiboot_uint8_t red; + multiboot_uint8_t green; + multiboot_uint8_t blue; +}; + +struct multiboot_mmap_entry +{ + multiboot_uint32_t size; + multiboot_uint64_t addr; + multiboot_uint64_t len; +#define MULTIBOOT_MEMORY_AVAILABLE 1 +#define MULTIBOOT_MEMORY_RESERVED 2 +#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3 +#define MULTIBOOT_MEMORY_NVS 4 +#define MULTIBOOT_MEMORY_BADRAM 5 + multiboot_uint32_t type; +} __attribute__((packed)); +typedef struct multiboot_mmap_entry multiboot_memory_map_t; + +struct multiboot_mod_list +{ + /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ + multiboot_uint32_t mod_start; + multiboot_uint32_t mod_end; + + /* Module command line */ + multiboot_uint32_t cmdline; + + /* padding to take it to 16 bytes (must be zero) */ + multiboot_uint32_t pad; +}; +typedef struct multiboot_mod_list multiboot_module_t; + +#endif /* ! ASM_FILE */ + +#endif /* ! MULTIBOOT_HEADER */ @@ -105,6 +105,9 @@ void mptable_setup(void); // fw/mtrr.c void mtrr_setup(void); +// fw/multiboot.c +void multiboot_init(void); + // fw/pciinit.c extern const u8 pci_irqs[4]; void pci_setup(void); |