b88351537b
The core is data structures and basic file finding capabilities, while option ROM handling, and loading stages and payloads is "extended". The core is rewritten to be BSD-l (its header already was), so can be copied to libpayload verbatim. It's also more robust in finding files in corrupted images, eg. after partial erase or update. Change-Id: Ic6923debf8bdf3c67c75746d3b31f3addab3dd74 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/114 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
156 lines
4 KiB
C
156 lines
4 KiB
C
/*
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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 <cbfs.h>
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#include <lib.h>
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#include <arch/byteorder.h>
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// use CBFS core
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#ifndef __SMM__
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#define CBFS_CORE_WITH_LZMA
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#endif
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#define phys_to_virt(x) (void*)(x)
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#define virt_to_phys(x) (uint32_t)(x)
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#define ERROR(x...) printk(BIOS_ERR, x)
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#define LOG(x...) printk(BIOS_INFO, x)
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// FIXME: romstart/romend are fine on x86, but not on ARM
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#define romstart() 0xffffffff
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#define romend() 0
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#include "cbfs_core.c"
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#ifndef __SMM__
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static inline int tohex4(unsigned int c)
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{
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return (c<=9)?(c+'0'):(c-10+'a');
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}
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static void tohex16(unsigned int val, char* dest)
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{
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dest[0]=tohex4(val>>12);
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dest[1]=tohex4((val>>8) & 0xf);
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dest[2]=tohex4((val>>4) & 0xf);
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dest[3]=tohex4(val & 0xf);
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}
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void *cbfs_load_optionrom(u16 vendor, u16 device, void * dest)
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{
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char name[17]="pciXXXX,XXXX.rom";
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struct cbfs_optionrom *orom;
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u8 *src;
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tohex16(vendor, name+3);
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tohex16(device, name+8);
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orom = (struct cbfs_optionrom *)
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cbfs_find_file(name, CBFS_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 cbfstool is (not yet) including a cbfs_optionrom header */
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src = ((unsigned char *) orom); // + sizeof(struct cbfs_optionrom);
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if (! dest)
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return src;
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if (cbfs_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 * cbfs_load_stage(const char *name)
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{
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struct cbfs_stage *stage = (struct cbfs_stage *)
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cbfs_find_file(name, CBFS_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(BIOS_INFO, "Stage: loading %s @ 0x%x (%d bytes), entry @ 0x%llx\n",
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name,
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(u32) stage->load, stage->memlen,
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stage->entry);
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memset((void *) (u32) stage->load, 0, stage->memlen);
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if (cbfs_decompress(stage->compression,
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((unsigned char *) stage) +
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sizeof(struct cbfs_stage),
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(void *) (u32) stage->load,
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stage->len))
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return (void *) -1;
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printk(BIOS_DEBUG, "Stage: done loading.\n");
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entry = stage->entry;
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// entry = ntohl((u32) stage->entry);
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return (void *) entry;
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}
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int cbfs_execute_stage(const char *name)
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{
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struct cbfs_stage *stage = (struct cbfs_stage *)
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cbfs_find_file(name, CBFS_TYPE_STAGE);
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if (stage == NULL)
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return 1;
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if (ntohl(stage->compression) != CBFS_COMPRESS_NONE) {
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printk(BIOS_INFO, "CBFS: 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(BIOS_INFO, "CBFS: 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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* @return 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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#endif
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