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c27279dc26
Hardware: SoC: MediaTek MT7629 Cortex-A7 (ARMv7 1.25GHz, Dual-Core) RAM: DDR3 128MB Flash: Macronix MX35LF1GE4AB (SPI-NAND 128MB) WiFi: MediaTek MT7761N (2.4GHz) / MediaTek MT7762N (5GHz) - no driver Ethernet: SoC (WAN) / MediaTek MT7531 (LAN x4) UART: [GND, RX, TX, 3.3V] (115200) Installation: - Flash recovery image with TFTP recovery Revert to stock firmware: - Flash stock firmware with TFTP recovery TFTP Recovery method: 1. Unplug the router 2. Hold the reset button and plug in 3. Release when the power LED stops flashing and go off 4. Set your computer IP address manually to 192.168.0.x / 255.255.255.0 5. Flash image with TFTP client to 192.168.0.1 Signed-off-by: Yoonji Park <koreapyj@dcmys.kr>
38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
--- a/arch/arm/Kconfig
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+++ b/arch/arm/Kconfig
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@@ -1794,6 +1794,14 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGL
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endchoice
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+config CMDLINE_OVERRIDE
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+ bool "Use alternative cmdline from device tree"
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+ help
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+ Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
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+ be used, this is not a good option for kernels that are shared across
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+ devices. This setting enables using "chosen/cmdline-override" as the
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+ cmdline if it exists in the device tree.
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+
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config CMDLINE
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string "Default kernel command string"
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default ""
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--- a/drivers/of/fdt.c
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+++ b/drivers/of/fdt.c
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@@ -1059,6 +1059,17 @@ int __init early_init_dt_scan_chosen(uns
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if (p != NULL && l > 0)
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strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
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+ /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
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+ * device tree option of chosen/bootargs-override. This is
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+ * helpful on boards where u-boot sets bootargs, and is unable
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+ * to be modified.
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+ */
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+#ifdef CONFIG_CMDLINE_OVERRIDE
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+ p = of_get_flat_dt_prop(node, "bootargs-override", &l);
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+ if (p != NULL && l > 0)
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+ strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
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+#endif
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+
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/*
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* CONFIG_CMDLINE is meant to be a default in case nothing else
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* managed to set the command line, unless CONFIG_CMDLINE_FORCE
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