From efcb3d9442fffe6dd4d12a8c70fe9e6a5423c4df Mon Sep 17 00:00:00 2001 From: Geoff Levand Date: Tue, 29 Nov 2016 10:47:32 -0800 Subject: powerpc/ps3: Fix system hang with GCC 5 builds commit 6dff5b67054e17c91bd630bcdda17cfca5aa4215 upstream. 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. Signed-off-by: Geoff Levand Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman diff --git a/arch/powerpc/boot/ps3-head.S b/arch/powerpc/boot/ps3-head.S index b6fcbaf..3dc44b0 100644 --- a/arch/powerpc/boot/ps3-head.S +++ b/arch/powerpc/boot/ps3-head.S @@ -57,11 +57,6 @@ __system_reset_overlay: bctr 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. */ or 31, 31, 31 /* db16cyc */ diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c index 4ec2d86..a05558a 100644 --- a/arch/powerpc/boot/ps3.c +++ b/arch/powerpc/boot/ps3.c @@ -119,13 +119,12 @@ void ps3_copy_vectors(void) flush_cache((void *)0x100, 512); } -void platform_init(unsigned long null_check) +void platform_init(void) { const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */ void *chosen; unsigned long ft_addr; u64 rm_size; - unsigned long val; console_ops.write = ps3_console_write; platform_ops.exit = ps3_exit; @@ -153,11 +152,6 @@ void platform_init(unsigned long null_check) 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); ps3_exit(); -- cgit v0.10.2