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| author | James Buren <braewoods+rb@braewoods.net> | 2021-06-21 09:36:54 +0000 |
|---|---|---|
| committer | James Buren <braewoods+rb@braewoods.net> | 2021-06-21 09:36:54 +0000 |
| commit | 581081a3df072833ab22a58af574992820c2ae8f (patch) | |
| tree | 741a88ef6978b85f62468146ffbcb948a4341139 /firmware/target/arm/pp | |
| parent | fc9208108052440ccde79b6cd33e3598e8fb7c26 (diff) | |
| download | rockbox-581081a3df072833ab22a58af574992820c2ae8f.tar.gz rockbox-581081a3df072833ab22a58af574992820c2ae8f.zip | |
mi4: replace chksum_crc32 with crc_32r
This uses an equivalent algorithm but with a different initial value
than we normally use (all bits off vs all bits on). Use the new crc_32r
to replace the original MI4 crc32 implementation.
This frees up some extra space on mi4 targets which gives us more
room on a few very space constrained targets (sansa c200/e200, etc).
Change-Id: Iaaac3ae353b30566156b1404cbf31ca32926203d
Diffstat (limited to 'firmware/target/arm/pp')
| -rw-r--r-- | firmware/target/arm/pp/mi4-loader.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/firmware/target/arm/pp/mi4-loader.c b/firmware/target/arm/pp/mi4-loader.c index 31b0065888..0104496e9d 100644 --- a/firmware/target/arm/pp/mi4-loader.c +++ b/firmware/target/arm/pp/mi4-loader.c @@ -27,12 +27,11 @@ #include "config.h" #include "mi4-loader.h" #include "loader_strerror.h" -#include "crc32-mi4.h" +#include "crc32.h" #include "file.h" #if defined(HAVE_BOOTDATA) #include "system.h" #include "bootdata.h" -#include "crc32.h" /* Write bootdata into location in FIRMWARE marked by magic header * Assumes buffer is already loaded with the firmware image @@ -293,7 +292,7 @@ static int load_mi4_filename(unsigned char* buf, return EREAD_IMAGE_FAILED; /* Check CRC32 to see if we have a valid file */ - sum = chksum_crc32 (buf, mi4header.mi4size - MI4_HEADER_SIZE); + sum = crc_32r (buf, mi4header.mi4size - MI4_HEADER_SIZE, 0); if(sum != mi4header.crc32) return EBAD_CHKSUM; |