mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-12-07 13:14:00 -05:00
46ab9f3f1c
Hardware -------- SOC: MediaTek MT7981 RAM: 512MB DDR4 FLASH: 128MB SPI-NAND WIFI: Mediatek MT7915 (integrated) 2x2 802.11ax 2.4 / 5 GHz ETH: Mediatek MT7981 internal 1 GbE PHY UART: 3V3 115200 8N1 (Pinout silkscreened / Do not connect VCC) Installation ------------ 1. Download the OpenWrt initramfs image. Copy the image to a TFTP server 2. Connect the TFTP server to the EAX17. Conect to the serial console, interrupt the autoboot process by pressing '0' when prompted. 3. Download & Boot the OpenWrt initramfs image. $ tftpboot openwrt.bin $ bootm 4. Wait for OpenWrt to boot. Transfer the sysupgrade image to the device using scp and install using sysupgrade. $ sysupgrade -n <path-to-sysupgrade.bin> Signed-off-by: Jascha Sundaresan <flizarthanon@gmail.com> Link: https://github.com/openwrt/openwrt/pull/20354 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
63 lines
2.2 KiB
Diff
63 lines
2.2 KiB
Diff
From 06e92afca89075628b12c9b4085b4cc7320081ac Mon Sep 17 00:00:00 2001
|
|
From: Jascha Sundaresan <flizarthanon@gmail.com>
|
|
Date: Thu, 23 Oct 2025 03:07:41 +0400
|
|
Subject: nvmem: layouts: u-boot-env: add optional "env-size" property
|
|
|
|
Some devices reserve a larger NVMEM region for the U-Boot environment
|
|
than the actual environment data length used by U-Boot itself. The CRC32
|
|
in the U-Boot header is calculated over the smaller data length, causing
|
|
CRC validation to fail when Linux reads the full partition.
|
|
|
|
Allow an optional device tree property "env-size" to specify the
|
|
environment data size to use for CRC computation.
|
|
|
|
v2: add missing $ref line to DT binding
|
|
|
|
Signed-off-by: Jascha Sundaresan <flizarthanon@gmail.com>
|
|
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
|
|
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
|
|
---
|
|
Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml | 7 +++++++
|
|
drivers/nvmem/layouts/u-boot-env.c | 4 +++-
|
|
2 files changed, 10 insertions(+), 1 deletion(-)
|
|
|
|
--- a/Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml
|
|
+++ b/Documentation/devicetree/bindings/nvmem/layouts/u-boot,env.yaml
|
|
@@ -46,6 +46,12 @@ properties:
|
|
type: object
|
|
description: Command to use for automatic booting
|
|
|
|
+ env-size:
|
|
+ description:
|
|
+ Size in bytes of the environment data used by U-Boot for CRC
|
|
+ calculation. If omitted, the full NVMEM region size is used.
|
|
+ $ref: /schemas/types.yaml#/definitions/uint32
|
|
+
|
|
ethaddr:
|
|
type: object
|
|
description: Ethernet interfaces base MAC address.
|
|
@@ -104,6 +110,7 @@ examples:
|
|
|
|
partition-u-boot-env {
|
|
compatible = "brcm,env";
|
|
+ env-size = <0x20000>;
|
|
|
|
ethaddr {
|
|
};
|
|
--- a/drivers/nvmem/layouts/u-boot-env.c
|
|
+++ b/drivers/nvmem/layouts/u-boot-env.c
|
|
@@ -99,10 +99,12 @@ int u_boot_env_parse(struct device *dev,
|
|
uint32_t crc32;
|
|
uint32_t calc;
|
|
uint8_t *buf;
|
|
+ u32 env_size;
|
|
int bytes;
|
|
int err;
|
|
|
|
- dev_size = nvmem_dev_size(nvmem);
|
|
+ dev_size = device_property_read_u32(dev, "env-size", &env_size) ?
|
|
+ nvmem_dev_size(nvmem) : (size_t)env_size;
|
|
|
|
buf = kzalloc(dev_size, GFP_KERNEL);
|
|
if (!buf) {
|