v2/src romfs->cbfs rename
romfs.c has been replaced by cbfs.c. Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4121 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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Peter Stuge
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252
src/lib/romfs.c
252
src/lib/romfs.c
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2008, Jordan Crouse <jordan@cosmicpenguin.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <types.h>
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#include <string.h>
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#include <console/console.h>
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#include <boot/coreboot_tables.h>
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#include <romfs.h>
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#ifndef CONFIG_BIG_ENDIAN
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#define ntohl(x) ( ((x&0xff)<<24) | ((x&0xff00)<<8) | \
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((x&0xff0000) >> 8) | ((x&0xff000000) >> 24) )
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#else
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#define ntohl(x) (x)
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#endif
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int run_address(void *f);
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int romfs_decompress(int algo, void *src, void *dst, int len)
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{
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switch(algo) {
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case ROMFS_COMPRESS_NONE:
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memcpy(dst, src, len);
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return 0;
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#ifdef CONFIG_COMPRESSION_LZMA
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case ROMFS_COMPRESS_LZMA: {
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unsigned long ulzma(unsigned char *src, unsigned char *dst);
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ulzma(src, dst);
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}
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return 0;
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#endif
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#ifdef CONFIG_COMPRESSION_NRV2B
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case ROMFS_COMPRESS_NRV2B: {
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unsigned long unrv2b(u8 *src, u8 *dst, unsigned long *ilen_p);
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unsigned long tmp;
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unrv2b(src, dst, &tmp);
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}
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return 0;
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#endif
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default:
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printk_info( "ROMFS: Unknown compression type %d\n",
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algo);
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return -1;
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}
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}
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int romfs_check_magic(struct romfs_file *file)
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{
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return !strcmp(file->magic, ROMFS_FILE_MAGIC) ? 1 : 0;
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}
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struct romfs_header *romfs_master_header(void)
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{
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struct romfs_header *header;
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void *ptr = (void *)*((unsigned long *) ROMFS_HEADPTR_ADDR);
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printk_debug("Check ROMFS header at %p\n", ptr);
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header = (struct romfs_header *) ptr;
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printk_debug("magic is %08x\n", ntohl(header->magic));
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if (ntohl(header->magic) != ROMFS_HEADER_MAGIC) {
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printk_err("NO ROMFS HEADER\n");
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return NULL;
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}
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printk_debug("Found ROMFS header at %p\n", ptr);
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return header;
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}
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struct romfs_file *romfs_find(const char *name)
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{
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struct romfs_header *header = romfs_master_header();
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unsigned long offset;
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if (header == NULL)
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return NULL;
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offset = 0 - ntohl(header->romsize) + ntohl(header->offset);
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while(1) {
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struct romfs_file *file = (struct romfs_file *) offset;
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if (romfs_check_magic(file)) printk_info("Check %s\n", ROMFS_NAME(file));
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if (romfs_check_magic(file) &&
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!strcmp(ROMFS_NAME(file), name))
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return file;
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offset += ntohl(header->align);
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if (offset < 0xFFFFFFFF - ntohl(header->romsize))
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return NULL;
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}
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}
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struct romfs_stage *romfs_find_file(const char *name, int type)
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{
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struct romfs_file *file = romfs_find(name);
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if (file == NULL) {
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printk_info( "ROMFS: Could not find file %s\n",
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name);
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return NULL;
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}
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if (ntohl(file->type) != type) {
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printk_info( "ROMFS: File %s is of type %x instead of"
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"type %x\n", name, file->type, type);
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return NULL;
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}
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return (void *) ROMFS_SUBHEADER(file);
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}
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void *romfs_load_optionrom(u16 vendor, u16 device, void * dest)
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{
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char name[17];
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struct romfs_optionrom *orom;
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u8 *src;
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sprintf(name,"pci%04x,%04x.rom", vendor, device);
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orom = (struct romfs_optionrom *)
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romfs_find_file(name, ROMFS_TYPE_OPTIONROM);
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if (orom == NULL)
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return NULL;
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/* They might have specified a dest address. If so, we can decompress.
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* If not, there's not much hope of decompressing or relocating the rom.
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* in the common case, the expansion rom is uncompressed, we
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* pass 0 in for the dest, and all we have to do is find the rom and
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* return a pointer to it.
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*/
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/* BUG: the romtool is (not yet) including a romfs_optionrom header */
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src = ((unsigned char *) orom); // + sizeof(struct romfs_optionrom);
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if (! dest)
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return src;
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if (romfs_decompress(ntohl(orom->compression),
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src,
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dest,
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ntohl(orom->len)))
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return NULL;
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return dest;
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}
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void * romfs_load_payload(struct lb_memory *lb_mem, const char *name)
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{
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int selfboot(struct lb_memory *mem, struct romfs_payload *payload);
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struct romfs_payload *payload = (struct romfs_payload *)
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romfs_find_file(name, ROMFS_TYPE_PAYLOAD);
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struct romfs_payload_segment *segment, *first_segment;
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if (payload == NULL)
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return (void *) -1;
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printk_debug("Got a payload\n");
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first_segment = segment = &payload->segments;
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selfboot(lb_mem, payload);
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printk_emerg("SELFBOOT RETURNED!\n");
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return (void *) -1;
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}
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void * romfs_load_stage(const char *name)
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{
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struct romfs_stage *stage = (struct romfs_stage *)
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romfs_find_file(name, ROMFS_TYPE_STAGE);
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/* this is a mess. There is no ntohll. */
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/* for now, assume compatible byte order until we solve this. */
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u32 entry;
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if (stage == NULL)
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return (void *) -1;
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printk_info("Stage: load @ %d/%d bytes, enter @ %llx\n",
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ntohl((u32) stage->load), ntohl(stage->memlen),
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stage->entry);
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memset((void *) ntohl((u32) stage->load), 0, ntohl(stage->memlen));
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if (romfs_decompress(ntohl(stage->compression),
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((unsigned char *) stage) +
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sizeof(struct romfs_stage),
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(void *) ntohl((u32) stage->load),
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ntohl(stage->len)))
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return (void *) -1;
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entry = stage->entry;
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// return (void *) ntohl((u32) stage->entry);
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return (void *) entry;
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}
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void * romfs_get_file(const char *name)
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{
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return romfs_find(name);
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}
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int romfs_execute_stage(const char *name)
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{
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struct romfs_stage *stage = (struct romfs_stage *)
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romfs_find_file(name, ROMFS_TYPE_STAGE);
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if (stage == NULL)
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return 1;
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if (ntohl(stage->compression) != ROMFS_COMPRESS_NONE) {
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printk_info( "ROMFS: Unable to run %s: Compressed file"
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"Not supported for in-place execution\n", name);
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return 1;
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}
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/* FIXME: This isn't right */
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printk_info( "ROMFS: run @ %p\n", (void *) ntohl((u32) stage->entry));
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return run_address((void *) ntohl((u32) stage->entry));
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}
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/**
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* run_address is passed the address of a function taking no parameters and
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* jumps to it, returning the result.
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* @param f the address to call as a function.
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* returns value returned by the function.
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*/
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int run_address(void *f)
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{
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int (*v) (void);
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v = f;
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return v();
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}
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