diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc8xx/start.S')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xx/start.S | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/arch/powerpc/cpu/mpc8xx/start.S b/arch/powerpc/cpu/mpc8xx/start.S index 202ea81ae4..62ac80b03b 100644 --- a/arch/powerpc/cpu/mpc8xx/start.S +++ b/arch/powerpc/cpu/mpc8xx/start.S @@ -130,12 +130,6 @@ in_flash: /* initialize some SPRs that are hard to access from C */ /*----------------------------------------------------------------------*/ - lis r3, CONFIG_SYS_IMMR@h /* pass IMMR as arg1 to C routine */ - ori r1, r3, CONFIG_SYS_INIT_SP_OFFSET /* set up the stack in internal DPRAM */ - /* Note: R0 is still 0 here */ - stwu r0, -4(r1) /* clear final stack frame so that */ - stwu r0, -4(r1) /* stack backtraces terminate cleanly */ - /* * Disable serialized ifetch and show cycles * (i.e. set processor to normal mode). @@ -151,6 +145,25 @@ in_flash: ori r2, r2, CONFIG_SYS_DER@l mtspr DER, r2 + /* set up the stack in internal DPRAM */ + lis r3, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE)@h + ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE)@l + addi r1, r3, -8 + + bl board_init_f_alloc_reserve + addi r1, r3, -8 + + /* Zeroise the CPM dpram */ + lis r4, CONFIG_SYS_IMMR@h + ori r4, r4, (0x2000 - 4) + li r0, (0x2000 / 4) + mtctr r0 + li r0, 0 +1: stwu r0, 4(r4) + bdnz 1b + + bl board_init_f_init_reserve + /* let the C-code set up the rest */ /* */ /* Be careful to keep code relocatable ! */ @@ -158,7 +171,7 @@ in_flash: GET_GOT /* initialize GOT access */ - /* r3: IMMR */ + lis r3, CONFIG_SYS_IMMR@h bl cpu_init_f /* run low-level CPU init code (from Flash) */ bl board_init_f /* run 1st part of board init code (from Flash) */ |