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kernel: add generic image_cmdline hack to MIPS targets

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17563 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg
2009-09-10 18:30:01 +00:00
parent 86dc5a4749
commit 31cee17e38
33 changed files with 285 additions and 24 deletions
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59
target/linux/generic-2.6/patches-2.6.30/021-mips_image_cmdline_hack.patch Normal file
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@@ -0,0 +1,59 @@
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -546,8 +546,28 @@ static void __init resource_init(void)
}
}
+#ifdef CONFIG_IMAGE_CMDLINE_HACK
+static void __init process__image_cmdline(void)
+{
+ extern char __image_cmdline[];
+
+ if (__image_cmdline[0] == '\0')
+ return;
+
+ if (__image_cmdline[0] == '-') {
+ strlcpy(arcs_cmdline, __image_cmdline, sizeof(arcs_cmdline));
+ } else {
+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+ strlcat(arcs_cmdline, __image_cmdline, sizeof(arcs_cmdline));
+ }
+}
+#else
+static void inline process__image_cmdline(void) {}
+#endif
+
void __init setup_arch(char **cmdline_p)
{
+ process__image_cmdline();
cpu_probe();
prom_init();
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -806,6 +806,10 @@ config SYNC_R4K
config MIPS_MACHINE
def_bool n
+config IMAGE_CMDLINE_HACK
+ bool "OpenWrt specific image command line hack"
+ default n
+
config NO_IOPORT
def_bool n
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -143,6 +143,12 @@ FEXPORT(__kernel_entry)
j kernel_entry
#endif
+#ifdef CONFIG_IMAGE_CMDLINE_HACK
+ .ascii "CMDLINE:"
+EXPORT(__image_cmdline)
+ .fill 0x400
+#endif /* CONFIG_IMAGE_CMDLINE_HACK */
+
__REF
NESTED(kernel_entry, 16, sp) # kernel entry point