mirror of
https://github.com/openwrt/openwrt.git
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9b1b89229f
Removed upstreamed patches:
pending-5.4/499-mtd-parser-cmdline-Fix-parsing-of-part-names-with-co.patch
Manually merged:
pending-5.4/611-netfilter_match_bypass_default_table.patch
layerscape/302-dts-0112-arm64-dts-fsl-ls1028a-prepare-dts-for-overlay.patch
Build-tested: ipq806x/R7800, bcm27xx/bcm2711, ath79/{generic,tiny},
ipq40xx, octeon, ramips/mt7621, realtek, x86/64
Run-tested: ipq806x/R7800, realtek
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-by: John Audia <graysky@archlinux.us>
Tested-by: Stijn Segers <foss@volatilesystems.org>
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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@@ -1838,6 +1838,14 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGL
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Only command line ATAG will be processed, the rest of the ATAGs
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sent by bootloader will be ignored.
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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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endchoice
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config CMDLINE
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--- a/drivers/of/fdt.c
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+++ b/drivers/of/fdt.c
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@@ -1060,6 +1060,17 @@ int __init early_init_dt_scan_chosen(uns
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if (p != NULL && l > 0)
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strlcpy(data, p, min(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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