Somewhere in the conversion of the MIPS architecture code to Device Tree
usage, there's been a failure to keep the separate variables holding the
kernel command line reconciled between the tree and the bootloader. This
patch restores previous functionality that broke.
Signed-off-by: Daniel Gimpelevich <dan...@gimpelevich.san-francisco.ca.us>
--- a/target/linux/generic/patches-3.14/997-device_tree_cmdline.patch
+++ b/target/linux/generic/patches-3.14/997-device_tree_cmdline.patch
@@ -1,6 +1,8 @@
---- a/drivers/of/fdt.c
-+++ b/drivers/of/fdt.c
-@@ -817,6 +817,9 @@ int __init early_init_dt_scan_chosen(uns
+Index: linux-3.14.28/drivers/of/fdt.c
+===================================================================
+--- linux-3.14.28.orig/drivers/of/fdt.c 2015-01-08 10:01:03.000000000
-0800
++++ linux-3.14.28/drivers/of/fdt.c 2015-01-17 20:29:51.674740290 -0800
+@@ -817,6 +817,9 @@
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
@@ -10,3 +12,17 @@
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else
+Index: linux-3.14.28/arch/mips/kernel/prom.c
+===================================================================
+--- linux-3.14.28.orig/arch/mips/kernel/prom.c 2015-01-17 20:30:09.922830766
-0800
++++ linux-3.14.28/arch/mips/kernel/prom.c 2015-01-17 20:30:54.095049815
-0800
+@@ -49,6 +49,9 @@
+
+ void __init __dt_setup_arch(struct boot_param_header *bph)
+ {
++ if (boot_command_line[0] == '\0')
++ strcpy(boot_command_line, arcs_cmdline);
++
+ if (!early_init_dt_scan(bph))
+ return;
+
--- a/target/linux/generic/patches-3.18/997-device_tree_cmdline.patch
+++ b/target/linux/generic/patches-3.18/997-device_tree_cmdline.patch
@@ -1,6 +1,8 @@
---- a/drivers/of/fdt.c
-+++ b/drivers/of/fdt.c
-@@ -903,6 +903,9 @@ int __init early_init_dt_scan_chosen(uns
+Index: linux-3.18.2/drivers/of/fdt.c
+===================================================================
+--- linux-3.18.2.orig/drivers/of/fdt.c 2015-01-17 20:57:52.419074654 -0800
++++ linux-3.18.2/drivers/of/fdt.c 2015-01-17 20:57:52.367074398 -0800
+@@ -903,6 +903,9 @@
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
@@ -10,3 +12,17 @@
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else
+Index: linux-3.18.2/arch/mips/kernel/prom.c
+===================================================================
+--- linux-3.18.2.orig/arch/mips/kernel/prom.c 2015-01-17 20:57:52.419074654
-0800
++++ linux-3.18.2/arch/mips/kernel/prom.c 2015-01-17 20:57:52.415074633
-0800
+@@ -49,6 +49,9 @@
+
+ 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;
+
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