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openwrt-xburst/target/linux/rb532-2.6/patches/140-cmdline_hack.patch
nbd 99f2f68b6f Add NAND flash/YAFFS2 patches for RB532 by David Goodenough
Read the kernel command line from an otherwise unused area of the kernel image (will be used for changing the command line on the fly when copying the system from CF to NAND)


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5296 3c298f89-4303-0410-b956-a3cf2f4a3e73
2006-10-26 01:08:41 +00:00

34 lines
925 B
Diff

diff -ur linux.old/arch/mips/kernel/head.S linux.dev/arch/mips/kernel/head.S
--- linux.old/arch/mips/kernel/head.S 2006-10-26 00:11:13.000000000 +0200
+++ linux.dev/arch/mips/kernel/head.S 2006-10-26 02:40:10.000000000 +0200
@@ -132,6 +132,8 @@
j kernel_entry
nop
+ nop
+EXPORT(_image_cmdline)
/*
* Reserved space for exception handlers.
diff -ur linux.old/arch/mips/rb500/prom.c linux.dev/arch/mips/rb500/prom.c
--- linux.old/arch/mips/rb500/prom.c 2006-10-26 00:11:14.000000000 +0200
+++ linux.dev/arch/mips/rb500/prom.c 2006-10-26 02:40:46.000000000 +0200
@@ -128,6 +128,7 @@
/* FIXME: STUB */
}
+extern char _image_cmdline;
void __init prom_setup_cmdline(void){
char cmd_line[CL_SIZE];
char *cp;
@@ -163,6 +164,9 @@
strcpy(cp,prom_argv[i]);
cp+=strlen(prom_argv[i]);
}
+ *(cp++) = ' ';
+ strcpy(cp,&_image_cmdline);
+ cp += strlen(&_image_cmdline);
i=strlen(arcs_cmdline);
if (i>0){