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60 lines
2.1 KiB
Diff
60 lines
2.1 KiB
Diff
From ee424f7d3960152f5f862bbb6943e59828dc7917 Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@gmail.com>
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Date: Fri, 4 Nov 2022 17:52:03 +0100
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Subject: [PATCH] nvmem: u-boot-env: fix crc32_data_offset on redundant
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u-boot-env
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The Western Digital MyBook Live (PowerPC 464/APM82181)
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has a set of redundant u-boot-env. Loading up the driver
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the following error:
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| u_boot_env: Invalid calculated CRC32: 0x4f8f2c86 (expected: 0x98b14514)
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| u_boot_env: probe of partition@1e000 failed with error -22
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Looking up the userspace libubootenv utilities source [0],
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it looks like the "mark" or "flag" is not part of the
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crc32 sum... which is unfortunate :(
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|static int libuboot_load(struct uboot_ctx *ctx)
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|{
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|[...]
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| if (ctx->redundant) {
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| [...]
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| offsetdata = offsetof(struct uboot_env_redund, data);
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| [...] //-----^^
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| }
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| usable_envsize = ctx->size - offsetdata;
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| buf[0] = malloc(bufsize);
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|[...]
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| for (i = 0; i < copies; i++) {
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| data = (uint8_t *)(buf[i] + offsetdata);
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| uint32_t crc;
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| ret = devread(ctx, i, buf[i]);
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| [...]
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| crc = *(uint32_t *)(buf[i] + offsetcrc);
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| dev->crc = crc32(0, (uint8_t *)data, usable_envsize);
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[0] https://github.com/sbabic/libubootenv/blob/master/src/uboot_env.c#L951
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Fixes: d5542923f200 ("nvmem: add driver handling U-Boot environment variables")
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Link: https://lore.kernel.org/r/70a16eae113e08db2390b76e174f4837caa135c3.1667580636.git.chunkeey@gmail.com
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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drivers/nvmem/u-boot-env.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/nvmem/u-boot-env.c
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+++ b/drivers/nvmem/u-boot-env.c
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@@ -135,7 +135,7 @@ static int u_boot_env_parse(struct u_boo
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break;
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case U_BOOT_FORMAT_REDUNDANT:
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crc32_offset = offsetof(struct u_boot_env_image_redundant, crc32);
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- crc32_data_offset = offsetof(struct u_boot_env_image_redundant, mark);
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+ crc32_data_offset = offsetof(struct u_boot_env_image_redundant, data);
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data_offset = offsetof(struct u_boot_env_image_redundant, data);
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break;
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}
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