[IA64] Fix simulator boot (for real this time).

Thanks to Stephane, we've now worked out the real cause of the
`Linux  will not boot on simulator' problem.  Turns out it's a stack
overflow because the stack pointer wasn't being initialised properly
in boot_head.S (it was being initialised to the lowest instead of the
highest address of the stack, so the first push started to overwrite
data in the BSS).

Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S
index 9364199..1c8c7e6 100644 (file)
--- a/arch/ia64/hp/sim/boot/boot_head.S
+++ b/arch/ia64/hp/sim/boot/boot_head.S
@@ -22,7 +22,7 @@ GLOBAL_ENTRY(_start)
        .save rp, r0
        .body
        movl gp = __gp
-       movl sp = stack_mem
+       movl sp = stack_mem+16384-16
        bsw.1
        br.call.sptk.many rp=start_bootloader
 END(_start)