Commit 32a27da2 authored by Geoff Levand's avatar Geoff Levand Committed by Sasha Levin

powerpc/ps3: Fix system hang with GCC 5 builds

[ Upstream commit 6dff5b67 ]

GCC 5 generates different code for this bootwrapper null check that
causes the PS3 to hang very early in its bootup. This check is of
limited value, so just get rid of it.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarGeoff Levand <geoff@infradead.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 07340eaf
...@@ -57,11 +57,6 @@ __system_reset_overlay: ...@@ -57,11 +57,6 @@ __system_reset_overlay:
bctr bctr
1: 1:
/* Save the value at addr zero for a null pointer write check later. */
li r4, 0
lwz r3, 0(r4)
/* Primary delays then goes to _zimage_start in wrapper. */ /* Primary delays then goes to _zimage_start in wrapper. */
or 31, 31, 31 /* db16cyc */ or 31, 31, 31 /* db16cyc */
......
...@@ -119,13 +119,12 @@ void ps3_copy_vectors(void) ...@@ -119,13 +119,12 @@ void ps3_copy_vectors(void)
flush_cache((void *)0x100, 512); flush_cache((void *)0x100, 512);
} }
void platform_init(unsigned long null_check) void platform_init(void)
{ {
const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */ const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */
void *chosen; void *chosen;
unsigned long ft_addr; unsigned long ft_addr;
u64 rm_size; u64 rm_size;
unsigned long val;
console_ops.write = ps3_console_write; console_ops.write = ps3_console_write;
platform_ops.exit = ps3_exit; platform_ops.exit = ps3_exit;
...@@ -153,11 +152,6 @@ void platform_init(unsigned long null_check) ...@@ -153,11 +152,6 @@ void platform_init(unsigned long null_check)
printf(" flat tree at 0x%lx\n\r", ft_addr); printf(" flat tree at 0x%lx\n\r", ft_addr);
val = *(unsigned long *)0;
if (val != null_check)
printf("null check failed: %lx != %lx\n\r", val, null_check);
((kernel_entry_t)0)(ft_addr, 0, NULL); ((kernel_entry_t)0)(ft_addr, 0, NULL);
ps3_exit(); ps3_exit();
......
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