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authorDavid Gibson <david@gibson.dropbear.id.au>2007-03-22 02:02:21 -0400
committerPaul Mackerras <paulus@samba.org>2007-04-12 13:55:14 -0400
commit3af82a8b00f98ca54e4c860eeb2b9ede6d8cadf4 (patch)
tree38b7c1a849817869bae6c38368e389b2cd860ace /arch/powerpc/boot/ops.h
parent27fbaa9702e548e74dffd21855769f6cedad42bd (diff)
[POWERPC] Clean up zImage handling of the command line
This cleans up how the zImage code manipulates the kernel command line. Notable improvements from the old handling: - Command line manipulation is consolidated into a new prep_cmdline() function, rather than being scattered across start() and some helper functions - Less stack space use: we use just a single global command line buffer, which can be initialized by an external tool as before, we no longer need another command line sized buffer on the stack. - Easier to support platforms whose firmware passes a commandline, but not a device tree. Platform code can now point new loader_info fields to the firmware's command line, rather than having to do early manipulation of the /chosen bootargs property which may then be rewritten again by the core. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/boot/ops.h')
-rw-r--r--arch/powerpc/boot/ops.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index cc191e8e147f..8008d612402e 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -70,6 +70,8 @@ struct serial_console_data {
70struct loader_info { 70struct loader_info {
71 void *promptr; 71 void *promptr;
72 unsigned long initrd_addr, initrd_size; 72 unsigned long initrd_addr, initrd_size;
73 char *cmdline;
74 int cmdline_len;
73}; 75};
74extern struct loader_info loader_info; 76extern struct loader_info loader_info;
75 77