diff options
Diffstat (limited to 'board/walnut405/init.S')
| -rw-r--r-- | board/walnut405/init.S | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/board/walnut405/init.S b/board/walnut405/init.S index d141707219..70d029aeda 100644 --- a/board/walnut405/init.S +++ b/board/walnut405/init.S @@ -46,54 +46,54 @@ #include <asm/mmu.h> - .globl ext_bus_cntlr_init + .globl ext_bus_cntlr_init ext_bus_cntlr_init: - mflr r4 /* save link register */ - bl ..getAddr + mflr r4 /* save link register */ + bl ..getAddr ..getAddr: - mflr r3 /* get address of ..getAddr */ - mtlr r4 /* restore link register */ - addi r4,0,14 /* set ctr to 10; used to prefetch */ - mtctr r4 /* 10 cache lines to fit this function */ - /* in cache (gives us 8x10=80 instrctns) */ + mflr r3 /* get address of ..getAddr */ + mtlr r4 /* restore link register */ + addi r4,0,14 /* set ctr to 10; used to prefetch */ + mtctr r4 /* 10 cache lines to fit this function */ + /* in cache (gives us 8x10=80 instrctns) */ ..ebcloop: - icbt r0,r3 /* prefetch cache line for addr in r3 */ - addi r3,r3,32 /* move to next cache line */ - bdnz ..ebcloop /* continue for 10 cache lines */ + icbt r0,r3 /* prefetch cache line for addr in r3 */ + addi r3,r3,32 /* move to next cache line */ + bdnz ..ebcloop /* continue for 10 cache lines */ - /*------------------------------------------------------------------- */ - /* Delay to ensure all accesses to ROM are complete before changing */ + /*------------------------------------------------------------------- */ + /* Delay to ensure all accesses to ROM are complete before changing */ /* bank 0 timings. 200usec should be enough. */ - /* 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles */ - /*------------------------------------------------------------------- */ + /* 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles */ + /*------------------------------------------------------------------- */ addis r3,0,0x0 - ori r3,r3,0xA000 /* ensure 200usec have passed since reset */ - mtctr r3 + ori r3,r3,0xA000 /* ensure 200usec have passed since reset */ + mtctr r3 ..spinlp: - bdnz ..spinlp /* spin loop */ + bdnz ..spinlp /* spin loop */ - /*----------------------------------------------------------------------- */ - /* Memory Bank 0 (Flash and SRAM) initialization */ - /*----------------------------------------------------------------------- */ - addi r4,0,pb0ap - mtdcr ebccfga,r4 - addis r4,0,0x9B01 - ori r4,r4,0x5480 - mtdcr ebccfgd,r4 + /*----------------------------------------------------------------------- */ + /* Memory Bank 0 (Flash and SRAM) initialization */ + /*----------------------------------------------------------------------- */ + addi r4,0,pb0ap + mtdcr ebccfga,r4 + addis r4,0,0x9B01 + ori r4,r4,0x5480 + mtdcr ebccfgd,r4 - addi r4,0,pb0cr - mtdcr ebccfga,r4 - addis r4,0,0xFFF1 /* BAS=0xFFF,BS=0x0(1MB),BU=0x3(R/W), */ - ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ - mtdcr ebccfgd,r4 + addi r4,0,pb0cr + mtdcr ebccfga,r4 + addis r4,0,0xFFF1 /* BAS=0xFFF,BS=0x0(1MB),BU=0x3(R/W), */ + ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ + mtdcr ebccfgd,r4 - blr + blr /*----------------------------------------------------------------------------- */ /* Function: sdram_init */ /* Description: Dummy implementation here - done in C later */ /*----------------------------------------------------------------------------- */ - .globl sdram_init + .globl sdram_init sdram_init: - blr + blr |
