55 lines
1.7 KiB
Diff
55 lines
1.7 KiB
Diff
--- a/arch/arm/Kconfig
|
|
+++ b/arch/arm/Kconfig
|
|
@@ -1589,6 +1589,14 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEN
|
|
|
|
endchoice
|
|
|
|
+config CMDLINE_OVERRIDE
|
|
+ bool "Use alternative cmdline from device tree"
|
|
+ help
|
|
+ Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
|
|
+ be used, this is not a good option for kernels that are shared across
|
|
+ devices. This setting enables using "chosen/cmdline-override" as the
|
|
+ cmdline if it exists in the device tree.
|
|
+
|
|
config CMDLINE
|
|
string "Default kernel command string"
|
|
default ""
|
|
--- a/drivers/of/fdt.c
|
|
+++ b/drivers/of/fdt.c
|
|
@@ -1187,6 +1187,17 @@ int __init early_init_dt_scan_chosen(cha
|
|
if (p != NULL && l > 0)
|
|
strlcat(cmdline, p, min_t(int, strlen(cmdline) + (int)l, COMMAND_LINE_SIZE));
|
|
|
|
+ /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
|
|
+ * device tree option of chosen/bootargs-override. This is
|
|
+ * helpful on boards where u-boot sets bootargs, and is unable
|
|
+ * to be modified.
|
|
+ */
|
|
+#ifdef CONFIG_CMDLINE_OVERRIDE
|
|
+ p = of_get_flat_dt_prop(node, "bootargs-override", &l);
|
|
+ if (p != NULL && l > 0)
|
|
+ strlcpy(cmdline, p, min((int)l, COMMAND_LINE_SIZE));
|
|
+#endif
|
|
+
|
|
handle_cmdline:
|
|
/*
|
|
* CONFIG_CMDLINE is meant to be a default in case nothing else
|
|
--- a/arch/arm64/Kconfig
|
|
+++ b/arch/arm64/Kconfig
|
|
@@ -2240,6 +2240,14 @@ config CMDLINE_FORCE
|
|
|
|
endchoice
|
|
|
|
+config CMDLINE_OVERRIDE
|
|
+ bool "Use alternative cmdline from device tree"
|
|
+ help
|
|
+ Some bootloaders may have uneditable bootargs. While CMDLINE_FORCE can
|
|
+ be used, this is not a good option for kernels that are shared across
|
|
+ devices. This setting enables using "chosen/cmdline-override" as the
|
|
+ cmdline if it exists in the device tree.
|
|
+
|
|
config EFI_STUB
|
|
bool
|
|
|