summaryrefslogtreecommitdiff
path: root/cpu
diff options
context:
space:
mode:
authorstroese <stroese>2003-12-09 14:54:43 +0000
committerstroese <stroese>2003-12-09 14:54:43 +0000
commitb828dda657dd26b5580c4a85e5680a5d16352a4c (patch)
tree60eed193717770e0ac566e362c36d706d9a35301 /cpu
parent4e5ca3eb670460cd5ad9b07fa4aafc0dee6178be (diff)
BUBINGA405EP port fixed.
Diffstat (limited to 'cpu')
-rw-r--r--cpu/ppc4xx/start.S84
1 files changed, 82 insertions, 2 deletions
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 215a925b937..e25101adbd6 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 */