kernel: preserve bootloader command line on MIPS

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 <daniel@gimpelevich.san-francisco.ca.us>
SVN-Revision: 44030

diff --git a/target/linux/generic/patches-3.14/997-device_tree_cmdline.patch b/target/linux/generic/patches-3.14/997-device_tree_cmdline.patch
index bc8e7091d5d827e307c76851b1d7a89e2e5cc3c3..9a52e1542bc1cc349b5892516761cdc6b424f565 100644 (file)
--- 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;
+ 

diff --git a/target/linux/generic/patches-3.18/997-device_tree_cmdline.patch b/target/linux/generic/patches-3.18/997-device_tree_cmdline.patch
index 572e280c74c4237b582916939df352c7746ade26..b3aa1d1966745a87bb82587b8f43b6931d7de174 100644 (file)
--- 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;
+