diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/boot/ps3-head.S | 25 | ||||
| -rw-r--r-- | arch/powerpc/boot/ps3.c | 23 | ||||
| -rwxr-xr-x | arch/powerpc/boot/wrapper | 21 |
3 files changed, 42 insertions, 27 deletions
diff --git a/arch/powerpc/boot/ps3-head.S b/arch/powerpc/boot/ps3-head.S index a55c2735f75..b6fcbaf5027 100644 --- a/arch/powerpc/boot/ps3-head.S +++ b/arch/powerpc/boot/ps3-head.S @@ -27,8 +27,9 @@ /* * __system_reset_overlay - The PS3 first stage entry. * - * The bootwraper build script copies the 0x100 bytes at symbol - * __system_reset_overlay to offset 0x100 of the rom image. + * The bootwraper build script copies the 512 bytes at symbol + * __system_reset_overlay to offset 0x100 of the rom image. This symbol + * must occupy 512 or less bytes. * * The PS3 has a single processor with two threads. */ @@ -47,8 +48,6 @@ __system_reset_overlay: mfspr r3, 0x88 cntlzw. r3, r3 - li r4, 0 - li r5, 0 beq 1f /* Secondary goes to __secondary_hold in kernel. */ @@ -57,8 +56,14 @@ __system_reset_overlay: mtctr r4 bctr - /* Primary delays then goes to _zimage_start in wrapper. */ 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 */ or 31, 31, 31 /* db16cyc */ @@ -67,16 +72,18 @@ __system_reset_overlay: mtctr r4 bctr + . = __system_reset_overlay + 512 + /* * __system_reset_kernel - Place holder for the kernel reset vector. * - * The bootwrapper build script copies 0x100 bytes from offset 0x100 + * The bootwrapper build script copies 512 bytes from offset 0x100 * of the rom image to the symbol __system_reset_kernel. At runtime - * the bootwrapper program copies the 0x100 bytes at __system_reset_kernel - * to ram address 0x100. This symbol must occupy 0x100 bytes. + * the bootwrapper program copies the 512 bytes at __system_reset_kernel + * to ram address 0x100. This symbol must occupy 512 bytes. */ .globl __system_reset_kernel __system_reset_kernel: - . = __system_reset_kernel + 0x100 + . = __system_reset_kernel + 512 diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c index 3b0ac4d006e..9954d98871d 100644 --- a/arch/powerpc/boot/ps3.c +++ b/arch/powerpc/boot/ps3.c @@ -27,10 +27,10 @@ #include "page.h" #include "ops.h" -extern s64 lv1_panic(u64 in_1); -extern s64 lv1_get_logical_partition_id(u64 *out_1); -extern s64 lv1_get_logical_ppe_id(u64 *out_1); -extern s64 lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3, +extern int lv1_panic(u64 in_1); +extern int lv1_get_logical_partition_id(u64 *out_1); +extern int lv1_get_logical_ppe_id(u64 *out_1); +extern int lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3, u64 in_4, u64 in_5, u64 *out_1, u64 *out_2); #ifdef DEBUG @@ -46,6 +46,7 @@ BSS_STACK(4096); * edit the command line passed to vmlinux (by setting /chosen/bootargs). * The buffer is put in it's own section so that tools may locate it easier. */ + static char cmdline[COMMAND_LINE_SIZE] __attribute__((__section__("__builtin_cmdline"))); @@ -75,7 +76,7 @@ static void ps3_exit(void) static int ps3_repository_read_rm_size(u64 *rm_size) { - s64 result; + int result; u64 lpar_id; u64 ppe_id; u64 v2; @@ -114,16 +115,17 @@ void ps3_copy_vectors(void) { extern char __system_reset_kernel[]; - memcpy((void *)0x100, __system_reset_kernel, 0x100); - flush_cache((void *)0x100, 0x100); + memcpy((void *)0x100, __system_reset_kernel, 512); + flush_cache((void *)0x100, 512); } -void platform_init(void) +void platform_init(unsigned long null_check) { 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; @@ -151,6 +153,11 @@ void platform_init(void) 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(); diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index 03b474bfe74..087e120e490 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -298,15 +298,16 @@ treeboot*) exit 0 ;; ps3) - # The ps3's loader supports loading gzipped binary images from flash - # rom to addr zero. The loader enters the image at addr 0x100. A - # bootwrapper overlay is use to arrange for the kernel to be loaded - # to addr zero and to have a suitable bootwrapper entry at 0x100. - # To construct the rom image, 0x100 bytes from offset 0x100 in the - # kernel is copied to the bootwrapper symbol __system_reset_kernel. - # The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is - # then copied to offset 0x100. At runtime the bootwrapper program - # copies the 0x100 bytes at __system_reset_kernel to addr 0x100. + # The ps3's loader supports loading a gzipped binary image from flash + # rom to ram addr zero. The loader then enters the system reset + # vector at addr 0x100. A bootwrapper overlay is used to arrange for + # a binary image of the kernel to be at addr zero, and yet have a + # suitable bootwrapper entry at 0x100. To construct the final rom + # image 512 bytes from offset 0x100 is copied to the bootwrapper + # place holder at symbol __system_reset_kernel. The 512 bytes of the + # bootwrapper entry code at symbol __system_reset_overlay is then + # copied to offset 0x100. At runtime the bootwrapper program copies + # the data at __system_reset_kernel back to addr 0x100. system_reset_overlay=0x`${CROSS}nm "$ofile" \ | grep ' __system_reset_overlay$' \ @@ -317,7 +318,7 @@ ps3) | cut -d' ' -f1` system_reset_kernel=`printf "%d" $system_reset_kernel` overlay_dest="256" - overlay_size="256" + overlay_size="512" ${CROSS}objcopy -O binary "$ofile" "$ofile.bin" |