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https://github.com/brain-hackers/u-boot-brain
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2021f083ed
Loading files stored with lzo compression from a btrfs filesystem was producing unaligned memory accesses, which were causing a data abort and a reset on an Orange Pi Zero. The change in hash.c is not triggered by any error but follows the same pattern. Please confirm. Fixed according to doc/README.unaligned-memory-access.txt Signed-off-by: Alberto Sánchez Molero <alsamolero@gmail.com> Tested-by: Robert Nelson <robertcnelson@gmail.com>
40 lines
730 B
C
40 lines
730 B
C
/*
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* BTRFS filesystem implementation for U-Boot
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*
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* 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include "btrfs.h"
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#include <u-boot/crc.h>
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#include <asm/unaligned.h>
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static u32 btrfs_crc32c_table[256];
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void btrfs_hash_init(void)
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{
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static int inited = 0;
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if (!inited) {
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crc32c_init(btrfs_crc32c_table, 0x82F63B78);
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inited = 1;
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}
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}
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u32 btrfs_crc32c(u32 crc, const void *data, size_t length)
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{
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return crc32c_cal(crc, (const char *) data, length,
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btrfs_crc32c_table);
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}
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u32 btrfs_csum_data(char *data, u32 seed, size_t len)
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{
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return btrfs_crc32c(seed, data, len);
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}
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void btrfs_csum_final(u32 crc, void *result)
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{
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put_unaligned(cpu_to_le32(~crc), (u32 *)result);
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}
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