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authorOlaf Hering <olh@suse.de>2005-10-28 20:46:50 -0400
committerPaul Mackerras <paulus@samba.org>2005-10-29 01:11:35 -0400
commit7e658118faa9faf71f8a8295cdaeb7ca71c04672 (patch)
tree310199b9745eaa292589e1277e3c3f66f46fc881 /arch/ppc64
parent67a1b68263d58a3ed5ce024468606044a1561312 (diff)
[PATCH] ppc64 boot: print firmware provided stackpointer
Show firmware provided stackpointer during boot. This helps to find the "taboo" areas on the various boards. claim tends to fail for these memory areas, but some jokers return success anyway. Use %p to print the load address, its a pointer. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc64')
-rw-r--r--arch/ppc64/boot/crt0.S1
-rw-r--r--arch/ppc64/boot/main.c4
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/ppc64/boot/crt0.S b/arch/ppc64/boot/crt0.S
index 8bfdeaf3be83..9cc442263939 100644
--- a/arch/ppc64/boot/crt0.S
+++ b/arch/ppc64/boot/crt0.S
@@ -54,5 +54,6 @@ clear_caches:
54 sync 54 sync
55 isync 55 isync
56 56
57 mr r6,r1
57 b start 58 b start
58 59
diff --git a/arch/ppc64/boot/main.c b/arch/ppc64/boot/main.c
index 3304ed34c44b..c1dc876bccab 100644
--- a/arch/ppc64/boot/main.c
+++ b/arch/ppc64/boot/main.c
@@ -131,7 +131,7 @@ static unsigned long try_claim(unsigned long size)
131 return addr; 131 return addr;
132} 132}
133 133
134void start(unsigned long a1, unsigned long a2, void *promptr) 134void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
135{ 135{
136 unsigned long i; 136 unsigned long i;
137 int len; 137 int len;
@@ -151,7 +151,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
151 if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4) 151 if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
152 exit(); 152 exit();
153 153
154 printf("\n\rzImage starting: loaded at 0x%lx\n\r", (unsigned long) _start); 154 printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", _start, sp);
155 155
156 /* 156 /*
157 * The first available claim_base must be above the end of the 157 * The first available claim_base must be above the end of the