diff options
Diffstat (limited to 'cpu/ppc4xx/start.S')
| -rw-r--r-- | cpu/ppc4xx/start.S | 84 |
1 files changed, 82 insertions, 2 deletions
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S index 215a925..e25101a 100644 --- a/cpu/ppc4xx/start.S +++ b/cpu/ppc4xx/start.S @@ -1384,14 +1384,94 @@ trap_reloc: /**************************************************************************/ #ifdef CONFIG_405EP ppc405ep_init: + +#ifdef CONFIG_BUBINGA405EP + /* + * Initialize EBC chip selects 1 & 4 and GPIO pins (for alternate + * function) to support FPGA and NVRAM accesses below. + */ + + lis r3,GPIO0_OSRH@h /* config GPIO output select */ + ori r3,r3,GPIO0_OSRH@l + lis r4,CFG_GPIO0_OSRH@h + ori r4,r4,CFG_GPIO0_OSRH@l + stw r4,0(r3) + lis r3,GPIO0_OSRL@h + ori r3,r3,GPIO0_OSRL@l + lis r4,CFG_GPIO0_OSRL@h + ori r4,r4,CFG_GPIO0_OSRL@l + stw r4,0(r3) + + lis r3,GPIO0_ISR1H@h /* config GPIO input select */ + ori r3,r3,GPIO0_ISR1H@l + lis r4,CFG_GPIO0_ISR1H@h + ori r4,r4,CFG_GPIO0_ISR1H@l + stw r4,0(r3) + lis r3,GPIO0_ISR1L@h + ori r3,r3,GPIO0_ISR1L@l + lis r4,CFG_GPIO0_ISR1L@h + ori r4,r4,CFG_GPIO0_ISR1L@l + stw r4,0(r3) + + lis r3,GPIO0_TSRH@h /* config GPIO three-state select */ + ori r3,r3,GPIO0_TSRH@l + lis r4,CFG_GPIO0_TSRH@h + ori r4,r4,CFG_GPIO0_TSRH@l + stw r4,0(r3) + lis r3,GPIO0_TSRL@h + ori r3,r3,GPIO0_TSRL@l + lis r4,CFG_GPIO0_TSRL@h + ori r4,r4,CFG_GPIO0_TSRL@l + stw r4,0(r3) + + lis r3,GPIO0_TCR@h /* config GPIO driver output enables */ + ori r3,r3,GPIO0_TCR@l + lis r4,CFG_GPIO0_TCR@h + ori r4,r4,CFG_GPIO0_TCR@l + stw r4,0(r3) + + li r3,pb1ap /* program EBC bank 1 for RTC access */ + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB1AP@h + ori r3,r3,CFG_EBC_PB1AP@l + mtdcr ebccfgd,r3 + li r3,pb1cr + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB1CR@h + ori r3,r3,CFG_EBC_PB1CR@l + mtdcr ebccfgd,r3 + + li r3,pb1ap /* program EBC bank 1 for RTC access */ + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB1AP@h + ori r3,r3,CFG_EBC_PB1AP@l + mtdcr ebccfgd,r3 + li r3,pb1cr + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB1CR@h + ori r3,r3,CFG_EBC_PB1CR@l + mtdcr ebccfgd,r3 + + li r3,pb4ap /* program EBC bank 4 for FPGA access */ + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB4AP@h + ori r3,r3,CFG_EBC_PB4AP@l + mtdcr ebccfgd,r3 + li r3,pb4cr + mtdcr ebccfga,r3 + lis r3,CFG_EBC_PB4CR@h + ori r3,r3,CFG_EBC_PB4CR@l + mtdcr ebccfgd,r3 +#endif + + addi r3,0,CPC0_PCI_HOST_CFG_EN +#ifdef CONFIG_BUBINGA405EP /* !----------------------------------------------------------------------- ! Check FPGA for PCI internal/external arbitration ! If board is set to internal arbitration, update cpc0_pci !----------------------------------------------------------------------- */ - addi r3,0,CPC0_PCI_HOST_CFG_EN -#ifdef CONFIG_BUBINGA405EP addis r5,r0,FPGA_REG1@h /* set offset for FPGA_REG1 */ ori r5,r5,FPGA_REG1@l lbz r5,0x0(r5) /* read to get PCI arb selection */ |