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spl: spl_legacy: fix the use of SPL_COPY_PAYLOAD_ONLY

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If the payload is compressed, SPL_COPY_PAYLOAD_ONLY should always be set
since the payload will not be directly read to its load address. The
payload will first be read to a temporary buffer, and then be decompressed
to its load address, without image header.

If the payload is not compressed, and SPL_COPY_PAYLOAD_ONLY is set, image
header should be skipped on loading. Otherwise image header should also be
read to its load address.

Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Weijie Gao 2022-05-20 11:23:58 +08:00 committed by Daniel Schwierzeck
parent 4c4bf046a5
commit fdc03bf4e9
1 changed files with 19 additions and 2 deletions
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21
common/spl/spl_legacy.c
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@ -88,15 +88,29 @@ int spl_load_legacy_img(struct spl_image_info *spl_image,
/* Read header into local struct */
load->read(load, header, sizeof(hdr), &hdr);
/*
* If the payload is compressed, the decompressed data should be
* directly write to its load address.
*/
if (spl_image_get_comp(&hdr) != IH_COMP_NONE)
spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
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:
dataptr = header;
/*
* Image header will be skipped only if SPL_COPY_PAYLOAD_ONLY
* is set
*/
if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY)
dataptr += sizeof(hdr);
load->read(load, dataptr, spl_image->size,
(void *)(unsigned long)spl_image->load_addr);
break;
@ -104,6 +118,9 @@ int spl_load_legacy_img(struct spl_image_info *spl_image,
case IH_COMP_LZMA:
lzma_len = LZMA_LEN;
/* dataptr points to compressed payload */
dataptr = header + sizeof(hdr);
debug("LZMA: Decompressing %08lx to %08lx\n",
dataptr, spl_image->load_addr);
src = malloc(spl_image->size);