From 7e658118faa9faf71f8a8295cdaeb7ca71c04672 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Fri, 28 Oct 2005 17:46:50 -0700 Subject: [PATCH] [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 Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras --- arch/ppc64/boot/crt0.S | 1 + arch/ppc64/boot/main.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/ppc64/boot/crt0.S b/arch/ppc64/boot/crt0.S index 8bfdeaf3be..9cc4422639 100644 --- a/arch/ppc64/boot/crt0.S +++ b/arch/ppc64/boot/crt0.S @@ -54,5 +54,6 @@ clear_caches: sync isync + mr r6,r1 b start diff --git a/arch/ppc64/boot/main.c b/arch/ppc64/boot/main.c index 3304ed34c4..c1dc876bcc 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) return addr; } -void start(unsigned long a1, unsigned long a2, void *promptr) +void start(unsigned long a1, unsigned long a2, void *promptr, void *sp) { unsigned long i; int len; @@ -151,7 +151,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr) if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4) exit(); - printf("\n\rzImage starting: loaded at 0x%lx\n\r", (unsigned long) _start); + printf("\n\rzImage starting: loaded at 0x%p (sp: 0x%p)\n\r", _start, sp); /* * The first available claim_base must be above the end of the -- 2.39.5