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payloads/libpayload/liblz4: Export magic number definitions

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Move LZ4 magic number definitions to public header file so that it can
be used in the payload. Also rename LEGACY_MAGICNUMBER to
LZ4_LEGACY_MAGICNUMBER for clarity when using from the payload.

BUG=None
TEST=Build Hylia BIOS image and boot to OS/UI.

Change-Id: Ief180105ec3fa7abf1013d0c5408aa96edde681b
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91152
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Karthikeyan Ramasubramanian 2026-02-10 14:52:42 -07:00 • committed by Matt DeVillier
commit 02867c2797
2 changed files with 4 additions and 4 deletions
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3
payloads/libpayload/include/lz4.h
View file

@ -34,6 +34,9 @@
#include <stddef.h>
#define LZ4F_MAGICNUMBER 0x184D2204
#define LZ4_LEGACY_MAGICNUMBER 0x184C2102
/* Decompresses an LZ4F image (multiple LZ4 blocks with frame header) from src
* to dst, ensuring that it doesn't read more than srcn bytes and doesn't write
* more than dstn. Buffer sizes must stay below 2GB. Can decompress files loaded

5
payloads/libpayload/liblz4/lz4_wrapper.c
View file

@ -73,9 +73,6 @@ typedef uint64_t U64;
/* Unaltered (just removed unrelated code) from github.com/Cyan4973/lz4/dev. */
#include "lz4.c.inc" /* #include for inlining, do not link! */
#define LZ4F_MAGICNUMBER 0x184D2204
#define LEGACY_MAGICNUMBER 0x184C2102
struct lz4_frame_header {
uint32_t magic;
union {
@ -198,7 +195,7 @@ size_t ulz4ln(const void *src, size_t srcn, void *dst, size_t dstn)
void *out = dst;
size_t out_size = 0;
if (le32toh(*((const uint32_t *)in)) != LEGACY_MAGICNUMBER)
if (le32toh(*((const uint32_t *)in)) != LZ4_LEGACY_MAGICNUMBER)
return 0;
in += sizeof(uint32_t);