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https://github.com/fail0verflow/switch-coreboot.git
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53099f8d1c
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@330 f3766cd6-281f-0410-b1cd-43a5c92072e9
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
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* This file is part of the LinuxBIOS project.
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*
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* Copyright (C) 2006-2007 coresystems GmbH
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* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
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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 <lar.h>
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#include <console.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 find_file(struct mem_file *archive, char *filename, struct mem_file *result)
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{
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char *walk, *fullname;
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struct lar_header *header;
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printk(BIOS_INFO, "LAR: Attempting to open '%s'.\n", filename);
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printk(BIOS_SPEW, "LAR: Start 0x%x len 0x%x\n", archive->start,
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archive->len);
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for (walk = archive->start;
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walk < (char *)archive->start + archive->len - 1; walk += 16) {
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if (strcmp(walk, MAGIC) != 0)
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continue;
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header = (struct lar_header *)walk;
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fullname = walk + sizeof(struct lar_header);
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printk(BIOS_SPEW, "LAR: current filename is %s\n", fullname);
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// FIXME: check checksum
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if (strcmp(fullname, filename) == 0) {
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result->start = walk + ntohl(header->offset);
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result->len = ntohl(header->len);
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return 0;
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}
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// skip file
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walk += (ntohl(header->len) + ntohl(header->offset) -
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1) & 0xfffffff0;
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}
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return 1;
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}
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int copy_file(struct mem_file *archive, char *filename, void *where)
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{
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int ret;
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struct mem_file result;
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ret = find_file(archive, filename, &result);
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if (ret) {
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printk(BIOS_INFO, "LAR: copy_file: No such file '%s'\n",
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filename);
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return 1;
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}
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memcpy(where, result.start, result.len);
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return 0;
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}
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int run_file(struct mem_file *archive, char *filename, void *where)
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{
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int (*v) (void);
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if (copy_file(archive, filename, where)) {
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printk(BIOS_INFO, "LAR: Run file %s failed: No such file.\n",
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filename);
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return 1;
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}
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v = where;
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return v();
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}
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