135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2020 Stefan Roese <sr@denx.de>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <image.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <spl.h>
|
|
|
|
#include <lzma/LzmaTypes.h>
|
|
#include <lzma/LzmaDec.h>
|
|
#include <lzma/LzmaTools.h>
|
|
|
|
#define LZMA_LEN (1 << 20)
|
|
|
|
int spl_parse_legacy_header(struct spl_image_info *spl_image,
|
|
const struct image_header *header)
|
|
{
|
|
u32 header_size = sizeof(struct image_header);
|
|
|
|
/* check uImage header CRC */
|
|
if (IS_ENABLED(CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK) &&
|
|
!image_check_hcrc(header)) {
|
|
puts("SPL: Image header CRC check failed!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
|
|
/*
|
|
* On some system (e.g. powerpc), the load-address and
|
|
* entry-point is located at address 0. We can't load
|
|
* to 0-0x40. So skip header in this case.
|
|
*/
|
|
spl_image->load_addr = image_get_load(header);
|
|
spl_image->entry_point = image_get_ep(header);
|
|
spl_image->size = image_get_data_size(header);
|
|
} else {
|
|
spl_image->entry_point = image_get_ep(header);
|
|
/* Load including the header */
|
|
spl_image->load_addr = image_get_load(header) -
|
|
header_size;
|
|
spl_image->size = image_get_data_size(header) +
|
|
header_size;
|
|
}
|
|
|
|
#ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
|
|
/* store uImage data length and CRC to check later */
|
|
spl_image->dcrc_data = image_get_load(header);
|
|
spl_image->dcrc_length = image_get_data_size(header);
|
|
spl_image->dcrc = image_get_dcrc(header);
|
|
#endif
|
|
|
|
spl_image->os = image_get_os(header);
|
|
spl_image->name = image_get_name(header);
|
|
debug(SPL_TPL_PROMPT
|
|
"payload image: %32s load addr: 0x%lx size: %d\n",
|
|
spl_image->name, spl_image->load_addr, spl_image->size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function is added explicitly to avoid code size increase, when
|
|
* no compression method is enabled. The compiler will optimize the
|
|
* following switch/case statement in spl_load_legacy_img() away due to
|
|
* Dead Code Elimination.
|
|
*/
|
|
static inline int spl_image_get_comp(const struct image_header *hdr)
|
|
{
|
|
if (IS_ENABLED(CONFIG_SPL_LZMA))
|
|
return image_get_comp(hdr);
|
|
|
|
return IH_COMP_NONE;
|
|
}
|
|
|
|
int spl_load_legacy_img(struct spl_image_info *spl_image,
|
|
struct spl_boot_device *bootdev,
|
|
struct spl_load_info *load, ulong header)
|
|
{
|
|
__maybe_unused SizeT lzma_len;
|
|
__maybe_unused void *src;
|
|
struct image_header hdr;
|
|
ulong dataptr;
|
|
int ret;
|
|
|
|
/* Read header into local struct */
|
|
load->read(load, header, sizeof(hdr), &hdr);
|
|
|
|
ret = spl_parse_image_header(spl_image, bootdev, &hdr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dataptr = header + sizeof(hdr);
|
|
|
|
/* Read image */
|
|
switch (spl_image_get_comp(&hdr)) {
|
|
case IH_COMP_NONE:
|
|
load->read(load, dataptr, spl_image->size,
|
|
(void *)(unsigned long)spl_image->load_addr);
|
|
break;
|
|
|
|
case IH_COMP_LZMA:
|
|
lzma_len = LZMA_LEN;
|
|
|
|
debug("LZMA: Decompressing %08lx to %08lx\n",
|
|
dataptr, spl_image->load_addr);
|
|
src = malloc(spl_image->size);
|
|
if (!src) {
|
|
printf("Unable to allocate %d bytes for LZMA\n",
|
|
spl_image->size);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
load->read(load, dataptr, spl_image->size, src);
|
|
ret = lzmaBuffToBuffDecompress((void *)spl_image->load_addr,
|
|
&lzma_len, src, spl_image->size);
|
|
if (ret) {
|
|
printf("LZMA decompression error: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
spl_image->size = lzma_len;
|
|
break;
|
|
|
|
default:
|
|
debug("Compression method %s is not supported\n",
|
|
genimg_get_comp_short_name(image_get_comp(&hdr)));
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|