diff options
author | Ronald G. Minnich <rminnich@gmail.com> | 2009-04-01 10:48:39 +0000 |
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committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2009-04-01 10:48:39 +0000 |
commit | ae63126346744e20264934f01d7b4653bc366a30 (patch) | |
tree | 9b5141a2f62ea7e89c9336710530820723ba0910 /src/lib/romfs.c | |
parent | f834e20ba35bae7431bb68c5bf064f493fb74bad (diff) | |
download | coreboot-ae63126346744e20264934f01d7b4653bc366a30.tar.xz |
This code adds support for coreboot images that use ROMFS.
It also removes the call to FILO from hardwaremain -- that
has needed removal for a long time.
abuild tested.
Note that this code has been tested and works on
both qemu and kontron. The changes to use it are coming
next.
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4039 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/lib/romfs.c')
-rw-r--r-- | src/lib/romfs.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/lib/romfs.c b/src/lib/romfs.c new file mode 100644 index 0000000000..87095cfb07 --- /dev/null +++ b/src/lib/romfs.c @@ -0,0 +1,234 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008, Jordan Crouse <jordan@cosmicpenguin.net> + * + * 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 <types.h> +#include <string.h> +#include <console/console.h> +#include <boot/coreboot_tables.h> +#include <romfs.h> + +#ifndef CONFIG_BIG_ENDIAN +#define ntohl(x) ( ((x&0xff)<<24) | ((x&0xff00)<<8) | \ + ((x&0xff0000) >> 8) | ((x&0xff000000) >> 24) ) +#else +#define ntohl(x) (x) +#endif + +int run_address(void *f); + +int romfs_decompress(int algo, void *src, void *dst, int len) +{ + switch(algo) { + case ROMFS_COMPRESS_NONE: + memcpy(dst, src, len); + return 0; + +#ifdef CONFIG_COMPRESSION_LZMA + + case ROMFS_COMPRESS_LZMA: { + unsigned long ulzma(unsigned char *src, unsigned char *dst); + ulzma(src, dst); + } + return 0; +#endif + +#ifdef CONFIG_COMPRESSION_NRV2B + case ROMFS_COMPRESS_NRV2B: { + unsigned long unrv2b(u8 *src, u8 *dst, unsigned long *ilen_p); + unsigned long tmp; + + unrv2b(src, dst, &tmp); + } + return 0; +#endif + default: + printk_info( "ROMFS: Unknown compression type %d\n", + algo); + return -1; + } +} + +int romfs_check_magic(struct romfs_file *file) +{ + return !strcmp(file->magic, ROMFS_FILE_MAGIC) ? 1 : 0; +} + +struct romfs_header *romfs_master_header(void) +{ + struct romfs_header *header; + + unsigned long ptr = *((unsigned long *) ROMFS_HEADPTR_ADDR); + printk_debug("Check ROMFS header at %p\n", ptr); + header = (struct romfs_header *) ptr; + + printk_debug("magic is %08x\n", ntohl(header->magic)); + if (ntohl(header->magic) != ROMFS_HEADER_MAGIC) { + printk_err("NO ROMFS HEADER\n"); + return NULL; + } + + printk_debug("Found ROMFS header at %p\n", ptr); + return header; +} + +struct romfs_file *romfs_find(const char *name) +{ + struct romfs_header *header = romfs_master_header(); + unsigned long offset; + + if (header == NULL) + return NULL; + offset = 0 - ntohl(header->romsize) + ntohl(header->offset); + + while(1) { + struct romfs_file *file = (struct romfs_file *) offset; + if (romfs_check_magic(file)) printk_info("Check %s\n", ROMFS_NAME(file)); + if (romfs_check_magic(file) && + !strcmp(ROMFS_NAME(file), name)) + return file; + + offset += ntohl(header->align); + + if (offset < 0xFFFFFFFF - ntohl(header->romsize)) + return NULL; + } +} + +struct romfs_stage *romfs_find_file(const char *name, int type) +{ + struct romfs_file *file = romfs_find(name); + + if (file == NULL) { + printk_info( "ROMFS: Could not find file %s\n", + name); + return NULL; + } + + if (ntohl(file->type) != type) { + printk_info( "ROMFS: File %s is of type %x instead of" + "type %x\n", name, file->type, type); + + return NULL; + } + + return (void *) ROMFS_SUBHEADER(file); +} + +int romfs_load_optionrom(const char *name, u32 dest) +{ + struct romfs_optionrom *orom = (struct romfs_optionrom *) + romfs_find_file(name, ROMFS_TYPE_OPTIONROM); + + if (orom == NULL) + return -1; + + if (romfs_decompress(ntohl(orom->compression), + ((unsigned char *) orom) + + sizeof(struct romfs_optionrom), + (void *) dest, + ntohl(orom->len))) + return -1; + + return 0; +} + +void * romfs_load_payload(struct lb_memory *lb_mem, const char *name) +{ + int selfboot(struct lb_memory *mem, struct romfs_payload *payload); + struct romfs_payload *payload = (struct romfs_payload *) + romfs_find_file(name, ROMFS_TYPE_PAYLOAD); + + struct romfs_payload_segment *segment, *first_segment; + + if (payload == NULL) + return (void *) -1; + printk_debug("Got a payload\n"); + first_segment = segment = &payload->segments; + selfboot(lb_mem, payload); + printk_emerg("SELFBOOT RETURNED!\n"); + + return (void *) -1; +} + +void * romfs_load_stage(const char *name) +{ + struct romfs_stage *stage = (struct romfs_stage *) + romfs_find_file(name, ROMFS_TYPE_STAGE); + /* this is a mess. There is no ntohll. */ + /* for now, assume compatible byte order until we solve this. */ + u32 entry; + + if (stage == NULL) + return (void *) -1; + + printk_info("Stage: load @ %d/%d bytes, enter @ %llx\n", + ntohl((u32) stage->load), ntohl(stage->memlen), + stage->entry); + memset((void *) ntohl((u32) stage->load), 0, ntohl(stage->memlen)); + + if (romfs_decompress(ntohl(stage->compression), + ((unsigned char *) stage) + + sizeof(struct romfs_stage), + (void *) ntohl((u32) stage->load), + ntohl(stage->len))) + return (void *) -1; + + entry = stage->entry; +// return (void *) ntohl((u32) stage->entry); + return (void *) entry; +} + +void * romfs_get_file(const char *name) +{ + return romfs_find(name); +} + +int romfs_execute_stage(const char *name) +{ + struct romfs_stage *stage = (struct romfs_stage *) + romfs_find_file(name, ROMFS_TYPE_STAGE); + + if (stage == NULL) + return 1; + + if (ntohl(stage->compression) != ROMFS_COMPRESS_NONE) { + printk_info( "ROMFS: Unable to run %s: Compressed file" + "Not supported for in-place execution\n", name); + return 1; + } + + /* FIXME: This isn't right */ + printk_info( "ROMFS: run @ %p\n", (void *) ntohl((u32) stage->entry)); + return run_address((void *) ntohl((u32) stage->entry)); +} + +/** + * * 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. + * * returns value returned by the function. + * */ + +int run_address(void *f) +{ + int (*v) (void); + v = f; + return v(); +} + |