+++ /dev/null
-/*
- * 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;
-
- void *ptr = (void *)*((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);
-}
-
-void *romfs_load_optionrom(u16 vendor, u16 device, void * dest)
-{
- char name[17];
- struct romfs_optionrom *orom;
- u8 *src;
-
- sprintf(name,"pci%04x,%04x.rom", vendor, device);
-
- orom = (struct romfs_optionrom *)
- romfs_find_file(name, ROMFS_TYPE_OPTIONROM);
-
- 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 romtool is (not yet) including a romfs_optionrom header */
- src = ((unsigned char *) orom); // + sizeof(struct romfs_optionrom);
-
- if (! dest)
- return src;
-
- if (romfs_decompress(ntohl(orom->compression),
- src,
- dest,
- ntohl(orom->len)))
- return NULL;
-
- return dest;
-}
-
-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();
-}
-
projects / coreboot.git / commitdiff