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boot: image: fixup zstd decompression buffer initialization typo

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The code was mistakenly initializing the input buffer twice.

Tested to be working on BeagleBone by adjusting CONFIG_SYS_BOOTM_LEN to
64MiB (probably works with less) and preparing uImage with:

 cat arch/arm/boot/Image \
  | zstd --ultra -22 --zstd=windowLog=22 \
  > linux.bin.zst

 mkimage -A arm -T kernel uImage -C zstd -d linux.bin.zst \
  -a 0x80008000 -e 0x80008000

Without the windowLog restriction, bootm fails with a zstd decompression
error 7 (window too large), which I haven't troubleshooted.

There should be a bit more documentation on the feature...

Reviewed-by: Simon Glass <sjg@chromium.org>
Fixes: 458b30af66 image: Update image_decomp() to avoid ifdefs
This commit is contained in:
Jérôme Carretero 2022-03-16 15:35:36 -04:00 committed by Tom Rini
parent d66b0f5dd7
commit 408e2d5a22
1 changed files with 1 additions and 1 deletions
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2
boot/image.c
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@ -500,7 +500,7 @@ int image_decomp(int comp, ulong load, ulong image_start, int type,
struct abuf in, out;
abuf_init_set(&in, image_buf, image_len);
abuf_init_set(&in, load_buf, unc_len);
abuf_init_set(&out, load_buf, unc_len);
ret = zstd_decompress(&in, &out);
if (ret >= 0) {
image_len = ret;