openwrtv3/target/linux/generic/patches-4.1/997-device_tree_cmdline.patch

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--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -935,6 +935,9 @@ int __init early_init_dt_scan_chosen(uns
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
+ p = of_get_flat_dt_prop(node, "bootargs-append", &l);
+ if (p != NULL && l > 0)
+ strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -50,6 +50,9 @@ void * __init early_init_dt_alloc_memory
void __init __dt_setup_arch(void *bph)
{
+ if (boot_command_line[0] == '\0')
+ strcpy(boot_command_line, arcs_cmdline);
+
if (!early_init_dt_scan(bph))
return;