diff options
author | Hung-Te Lin <hungte@chromium.org> | 2013-01-25 12:42:40 +0800 |
---|---|---|
committer | Anton Kochkov <anton.kochkov@gmail.com> | 2013-02-12 11:34:20 +0100 |
commit | d01d0368f492b84ea093875f918086a23bc0ec7a (patch) | |
tree | 0ac1a85b0f3ed68d16d10a32dd2b025f391bc382 /payloads/libpayload/libcbfs/cbfs.c | |
parent | 02ae0bf8feb554ab408a9129fd9fffd1dc4cf6aa (diff) | |
download | coreboot-d01d0368f492b84ea093875f918086a23bc0ec7a.tar.xz |
libpayload: New CBFS to support multiple firmware media sources.
Upgrade CBFS in libpayload to use new media-based implementation from coreboot
( http://review.coreboot.org/#/c/2182/ ).
Old CBFS functions (cbfs_find, cbfs_find_file, get_cbfs_header) are still
supported, although the recommended way is to use new CBFS API.
To migrate your existing x86 payload source:
- Change cbfs_find to cbfs_get_file
- Change cbfs_find_file to cbfs_get_file_content
- Prefix every CBFS call with a CBFS_DEFAULT_MEDIA argument.
Ex, char *jpeg_data = cbfs_find_file("splash.jpg", CBFS_TYPE_BOOTSPLASH);
=> char *jpeg_data = cbfs_get_file_content(
CBFS_DEFAULT_MEDIA, "splash.jpg", CBFS_TYPE_BOOTSPLASH);
The legacy setup_cbfs_from_{ram,flash} is also supported, although the better
equivalent is to make a new media instance:
struct cbfs_media ram_media;
init_cbfs_ram_media(&ram_media, start, size);
char *data = cbfs_get_file_content(&ram_media, "myfile", my_type);
Verified by being successfully linked with filo.
Change-Id: If797bc7e3ba975d7e3be905c59424f7a93b8ce11
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2191
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Diffstat (limited to 'payloads/libpayload/libcbfs/cbfs.c')
-rw-r--r-- | payloads/libpayload/libcbfs/cbfs.c | 232 |
1 files changed, 187 insertions, 45 deletions
diff --git a/payloads/libpayload/libcbfs/cbfs.c b/payloads/libpayload/libcbfs/cbfs.c index 026b73c965..35e48dda27 100644 --- a/payloads/libpayload/libcbfs/cbfs.c +++ b/payloads/libpayload/libcbfs/cbfs.c @@ -2,6 +2,7 @@ * This file is part of the libpayload project. * * Copyright (C) 2011 secunet Security Networks AG + * Copyright (C) 2013 Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -26,80 +27,221 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ +#define LIBPAYLOAD + +#ifdef LIBPAYLOAD +# include <libpayload-config.h> +# ifdef CONFIG_LZMA +# include <lzma.h> +# define CBFS_CORE_WITH_LZMA +# endif +# define CBFS_MINI_BUILD +#elif defined(__SMM__) +# define CBFS_MINI_BUILD +#else +# define CBFS_CORE_WITH_LZMA +# include <lib.h> +#endif -#include <endian.h> -#include <stdio.h> -#include <string.h> #include <cbfs.h> +#include <string.h> -#ifdef CONFIG_LZMA -#define CBFS_CORE_WITH_LZMA -#include <lzma.h> +#ifdef LIBPAYLOAD +# include <stdio.h> +# define DEBUG(x...) +# define LOG(x...) printf(x) +# define ERROR(x...) printf(x) +#else +# include <console/console.h> +# define ERROR(x...) printk(BIOS_ERR, "CBFS: " x) +# define LOG(x...) printk(BIOS_INFO, "CBFS: " x) +# if CONFIG_DEBUG_CBFS +# define DEBUG(x...) printk(BIOS_SPEW, "CBFS: " x) +# else +# define DEBUG(x...) +# endif #endif -#define ERROR(x...) printf(x) -#define LOG(x...) - -static uint32_t host_virt_to_phys(void *addr); -static void *host_phys_to_virt(uint32_t addr); +#if defined(CONFIG_CBFS_HEADER_ROM_OFFSET) && (CONFIG_CBFS_HEADER_ROM_OFFSET) +# define CBFS_HEADER_ROM_ADDRESS (CONFIG_CBFS_HEADER_ROM_OFFSET) +#else +// Indirect address: only works on 32bit top-aligned systems. +# define CBFS_HEADER_ROM_ADDRESS (*(uint32_t*)0xfffffffc) +#endif -uint32_t romstart(void); -uint32_t romend(void); +#include "cbfs_core.c" -#include <arch/virtual.h> -static uint32_t host_virt_to_phys(void *addr) +#ifndef __SMM__ +static inline int tohex4(unsigned int c) { - return virt_to_phys(addr); + return (c <= 9) ? (c + '0') : (c - 10 + 'a'); } -static void *host_phys_to_virt(uint32_t addr) +static void tohex16(unsigned int val, char* dest) { - return phys_to_virt(addr); + dest[0] = tohex4(val>>12); + dest[1] = tohex4((val>>8) & 0xf); + dest[2] = tohex4((val>>4) & 0xf); + dest[3] = tohex4(val & 0xf); } -#undef virt_to_phys -#undef phys_to_virt -uint32_t (*virt_to_phys)(void *) = host_virt_to_phys; -void* (*phys_to_virt)(uint32_t) = host_phys_to_virt; +void *cbfs_load_optionrom(struct cbfs_media *media, uint16_t vendor, + uint16_t device, void *dest) +{ + char name[17] = "pciXXXX,XXXX.rom"; + struct cbfs_optionrom *orom; + uint8_t *src; + tohex16(vendor, name+3); + tohex16(device, name+8); -uint32_t _romstart = 0xffffffff; -uint32_t _romend = 0; + orom = (struct cbfs_optionrom *) + cbfs_get_file_content(media, name, CBFS_TYPE_OPTIONROM); -uint32_t romstart(void) -{ - return _romstart; + if (orom == NULL) + return NULL; + + /* They might have specified a dest address. If so, we can decompress. + * If not, there's not much hope of decompressing or relocating the rom. + * in the common case, the expansion rom is uncompressed, we + * pass 0 in for the dest, and all we have to do is find the rom and + * return a pointer to it. + */ + + /* BUG: the cbfstool is (not yet) including a cbfs_optionrom header */ + src = (uint8_t*)orom; // + sizeof(struct cbfs_optionrom); + + if (! dest) + return src; + + if (cbfs_decompress(ntohl(orom->compression), + src, + dest, + ntohl(orom->len))) + return NULL; + + return dest; } -uint32_t romend(void) +void * cbfs_load_stage(struct cbfs_media *media, const char *name) { - return _romend; + struct cbfs_stage *stage = (struct cbfs_stage *) + cbfs_get_file_content(media, name, CBFS_TYPE_STAGE); + /* this is a mess. There is no ntohll. */ + /* for now, assume compatible byte order until we solve this. */ + uint32_t entry; + + if (stage == NULL) + return (void *) -1; + + LOG("loading stage %s @ 0x%x (%d bytes), entry @ 0x%llx\n", + name, + (uint32_t) stage->load, stage->memlen, + stage->entry); + memset((void *) (uint32_t) stage->load, 0, stage->memlen); + + if (cbfs_decompress(stage->compression, + ((unsigned char *) stage) + + sizeof(struct cbfs_stage), + (void *) (uint32_t) stage->load, + stage->len)) + return (void *) -1; + + DEBUG("stage loaded.\n"); + + entry = stage->entry; + // entry = ntohll(stage->entry); + + return (void *) entry; } -#include "cbfs_core.c" +int cbfs_execute_stage(struct cbfs_media *media, const char *name) +{ + struct cbfs_stage *stage = (struct cbfs_stage *) + cbfs_get_file_content(media, name, CBFS_TYPE_STAGE); -static uint32_t ram_cbfs_offset; + if (stage == NULL) + return 1; -static uint32_t ram_virt_to_phys(void *addr) -{ - return (uint32_t)addr - ram_cbfs_offset; + if (ntohl(stage->compression) != CBFS_COMPRESS_NONE) { + LOG("Unable to run %s: Compressed file" + "Not supported for in-place execution\n", name); + return 1; + } + + /* FIXME: This isn't right */ + LOG("run @ %p\n", (void *) ntohl((uint32_t) stage->entry)); + return run_address((void *)(uintptr_t)ntohll(stage->entry)); } -static void *ram_phys_to_virt(uint32_t addr) +void *cbfs_load_payload(struct cbfs_media *media, const char *name) { - return (void*)addr + ram_cbfs_offset; + return (struct cbfs_payload *)cbfs_get_file_content( + media, name, CBFS_TYPE_PAYLOAD); } -void setup_cbfs_from_ram(void* start, uint32_t size) -{ - /* assumes rollover */ - ram_cbfs_offset = (uint32_t)start + size; - virt_to_phys = ram_virt_to_phys; - phys_to_virt = ram_phys_to_virt; +struct cbfs_file *cbfs_find(const char *name) { + return cbfs_get_file(CBFS_DEFAULT_MEDIA, name); +} + +void *cbfs_find_file(const char *name, int type) { + return cbfs_get_file_content(CBFS_DEFAULT_MEDIA, name, type); +} + +const struct cbfs_header *get_cbfs_header(void) { + return cbfs_get_header(CBFS_DEFAULT_MEDIA); } -void setup_cbfs_from_flash(void) +/* Simple buffer */ + +void *cbfs_simple_buffer_map(struct cbfs_simple_buffer *buffer, + struct cbfs_media *media, + size_t offset, size_t count) { + void *address = buffer->buffer + buffer->allocated;; + DEBUG("simple_buffer_map(offset=%d, count=%d): " + "allocated=%d, size=%d, last_allocate=%d\n", + offset, count, buffer->allocated, buffer->size, + buffer->last_allocate); + if (buffer->allocated + count >= buffer->size) + return CBFS_MEDIA_INVALID_MAP_ADDRESS; + if (media->read(media, address, offset, count) != count) { + ERROR("simple_buffer: fail to read %zd bytes from 0x%zx\n", + count, offset); + return CBFS_MEDIA_INVALID_MAP_ADDRESS; + } + buffer->allocated += count; + buffer->last_allocate = count; + return address; +} + +void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer, + const void *address) { + // TODO Add simple buffer management so we can free more than last + // allocated one. + DEBUG("simple_buffer_unmap(address=0x%p): " + "allocated=%d, size=%d, last_allocate=%d\n", + address, buffer->allocated, buffer->size, + buffer->last_allocate); + if ((buffer->buffer + buffer->allocated - buffer->last_allocate) == + address) { + buffer->allocated -= buffer->last_allocate; + buffer->last_allocate = 0; + } + return NULL; +} + +/** + * run_address is passed the address of a function taking no parameters and + * jumps to it, returning the result. + * @param f the address to call as a function. + * @return value returned by the function. + */ + +int run_address(void *f) { - virt_to_phys = host_virt_to_phys; - phys_to_virt = host_phys_to_virt; + int (*v) (void); + v = f; + return v(); } + +#endif |