diff options
Diffstat (limited to 'board/cray/L1/init.S')
| -rw-r--r-- | board/cray/L1/init.S | 106 |
1 files changed, 53 insertions, 53 deletions
diff --git a/board/cray/L1/init.S b/board/cray/L1/init.S index acc5205..72a10d3 100644 --- a/board/cray/L1/init.S +++ b/board/cray/L1/init.S @@ -52,53 +52,53 @@ /* control registers to set that up are determined by what we've */ /* empirically discovered work there. */ - .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 */ - /*---------------------------------------------------------------------- */ - /* Peripheral Bank 0 (Flash) initialization */ - /*---------------------------------------------------------------------- */ + /*---------------------------------------------------------------------- */ + /* Peripheral Bank 0 (Flash) initialization */ + /*---------------------------------------------------------------------- */ /* 0x7F8FFE80 slowest boot */ - 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 r4,0,0xFFC5 /* BAS=0xFFC,BS=0x4(4MB),BU=0x3(R/W), */ - ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ - mtdcr ebccfgd,r4 - - blr - - /*---------------------------------------------------------------------- */ - /* Peripheral Bank 1 (NVRAM/RTC) 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 r4,0,0xFFC5 /* BAS=0xFFC,BS=0x4(4MB),BU=0x3(R/W), */ + ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ + mtdcr ebccfgd,r4 + + blr + + /*---------------------------------------------------------------------- */ + /* Peripheral Bank 1 (NVRAM/RTC) initialization */ /* CRAY:the L1 has NOT this bank, it is tied to SV2/IOCA/etc/ instead */ /* and we do DMA on it. The ConfigurationRegister part is threfore */ /* almost arbitrary, except that our linux driver needs to know the */ @@ -119,21 +119,21 @@ ext_bus_cntlr_init: /* ByteEnableMode BEM=0 */ /* ParityEnable PEN=0 */ /* all reserved bits=0 */ - /*---------------------------------------------------------------------- */ - /*---------------------------------------------------------------------- */ - addi r4,0,pb1ap - mtdcr ebccfga,r4 - addis r4,0,0x0185 /* hiword */ - ori r4,r4,0x4380 /* loword */ - mtdcr ebccfgd,r4 - - addi r4,0,pb1cr - mtdcr ebccfga,r4 - addis r4,0,0xF001 /* BAS=0xF00,BS=0x0(1MB),BU=0x3(R/W), */ - ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ - mtdcr ebccfgd,r4 - - blr + /*---------------------------------------------------------------------- */ + /*---------------------------------------------------------------------- */ + addi r4,0,pb1ap + mtdcr ebccfga,r4 + addis r4,0,0x0185 /* hiword */ + ori r4,r4,0x4380 /* loword */ + mtdcr ebccfgd,r4 + + addi r4,0,pb1cr + mtdcr ebccfga,r4 + addis r4,0,0xF001 /* BAS=0xF00,BS=0x0(1MB),BU=0x3(R/W), */ + ori r4,r4,0x8000 /* BW=0x0( 8 bits) */ + mtdcr ebccfgd,r4 + + blr /*----------------------------------------------------------------------------- */ /* Function: sdram_init */ @@ -141,7 +141,7 @@ ext_bus_cntlr_init: /* NOTE: for CrayL1 we have ECC memory, so enable it. */ /*....now done in C in L1.c:init_sdram for readability. */ /*----------------------------------------------------------------------------- */ - .globl sdram_init + .globl sdram_init sdram_init: blr |