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diff -ur linux.old/arch/mips/kernel/head.S linux.dev/arch/mips/kernel/head.S
--- linux.old/arch/mips/kernel/head.S 2006-12-06 17:30:27.000000000 +0100
+++ linux.dev/arch/mips/kernel/head.S 2006-12-06 18:34:43.000000000 +0100
@@ -129,15 +129,20 @@
#endif
.endm
-
j kernel_entry
nop
-
+ nop
+
/*
* Reserved space for exception handlers.
* Necessary for machines which link their kernels at KSEG0.
+ * Use as temporary storage for the kernel command line, so that it
+ * can be updated easily without having to relink the kernel.
*/
- .fill 0x400
+
+EXPORT(_image_cmdline)
+ .ascii "CMDLINE:"
+ .fill 0x3ec
EXPORT(stext) # used for profiling
EXPORT(_stext)
diff -ur linux.old/arch/mips/adm5120/prom.c linux.dev/arch/mips/adm5120/prom.c
--- linux.old/arch/mips/adm5120/prom.c 2006-12-06 17:30:27.000000000 +0100
+++ linux.dev/arch/mips/adm5120/prom.c 2006-12-06 17:41:40.000000000 +0100
@@ -100,6 +100,7 @@
}
+extern char _image_cmdline;
/*
* initialize the prom module.
*/
@@ -112,8 +112,10 @@
mips_machtype = adm5120_board.mach_type;
/* init command line, register a default kernel command line */
- strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);
+ char *cmd = &_image_cmdline + 8;
+ if( strlen(cmd) > 0) strcpy( &(arcs_cmdline[0]), cmd);
+ else strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);
/* init memory map */
prom_meminit();
}
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