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ath79: add env-size for Sitecom WLR-7100 / WLR-8100 u-boot-env

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The Linux kernel assumes that the u-boot environment covers the full
partition, but it only covers 0x1000 bytes. Linux checks the CRC and
does this over the full partition. This fails like this:
```
u-boot-env-layout 1f000000.spi:flash@0:partitions:partition@30000:nvmem-layout: Invalid calculated CRC32: 0xfcac8c41 (expected: 0x14e6335a)
u-boot-env-layout 1f000000.spi:flash@0:partitions:partition@30000:nvmem-layout: probe with driver u-boot-env-layout failed with error -22
```

Define the u-boot environment with a length of 0x1000 bytes to calculate
the CRC only over this area.

When replicating the u-boot environment with these parameters it
generates the same CRC:
```
mkenvimage -p 0 -b -s 0x1000 -o output.bin input.txt
```

Fixes: https://github.com/openwrt/openwrt/issues/21696
Fixes: 5e3a602def ("ath79: sitecom,wlrx100: use nvmem")
Link: https://github.com/openwrt/openwrt/pull/22030
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 68a466b698)
This commit is contained in:
Hauke Mehrtens 2026-02-15 03:06:53 +01:00
parent ff3fad172d
commit 576aa04151
2 changed files with 2 additions and 0 deletions
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1
target/linux/ath79/dts/ar1022_sitecom_wlr-7100.dts
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@ -128,6 +128,7 @@
nvmem-layout {
compatible = "u-boot,env";
env-size = <0x1000>;
macaddr_uboot_ethaddr: ethaddr {
#nvmem-cell-cells = <1>;

1
target/linux/ath79/dts/qca9558_sitecom_wlr-8100.dts
View file

@ -83,6 +83,7 @@
nvmem-layout {
compatible = "u-boot,env";
env-size = <0x1000>;
macaddr_uboot_ethaddr: ethaddr {
#nvmem-cell-cells = <1>;