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lantiq: enable retrieving kernel args from bootloader

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This patch is a device tree enhancement that IMHO is worthy of mainline.
It allows the bootloader's commandline to be preserved even when the
device tree specifies one.

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>

SVN-Revision: 36780
This commit is contained in:
John Crispin 2013-05-30 16:00:42 +00:00
parent d1f3751d05
commit a9968d9cb8
3 changed files with 36 additions and 0 deletions
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12
target/linux/generic/patches-3.10/997-device_tree_cmdline.patch Normal file
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@ -0,0 +1,12 @@
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -677,6 +677,9 @@ 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(strlen(data) + (int)l, COMMAND_LINE_SIZE));
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else

12
target/linux/generic/patches-3.8/997-device_tree_cmdline.patch Normal file
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@ -0,0 +1,12 @@
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -677,6 +677,9 @@ 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(strlen(data) + (int)l, COMMAND_LINE_SIZE));
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else

12
target/linux/generic/patches-3.9/997-device_tree_cmdline.patch Normal file
View File

@ -0,0 +1,12 @@
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -677,6 +677,9 @@ 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(strlen(data) + (int)l, COMMAND_LINE_SIZE));
/*
* CONFIG_CMDLINE is meant to be a default in case nothing else