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-rw-r--r--cpu/ppc4xx/start.S61
1 files changed, 39 insertions, 22 deletions
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 8ecaaea..9626b65 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -1870,28 +1870,6 @@ ppc405ep_init:
mtdcr ebccfgd,r3
#endif
-#ifndef CFG_CPC0_PCI
- li r3,CPC0_PCI_HOST_CFG_EN
-#ifdef CONFIG_BUBINGA
- /*
- !-----------------------------------------------------------------------
- ! Check FPGA for PCI internal/external arbitration
- ! If board is set to internal arbitration, update cpc0_pci
- !-----------------------------------------------------------------------
- */
- 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 */
- andi. r6,r5,FPGA_REG1_PCI_INT_ARB /* using internal arbiter ?*/
- beq ..pci_cfg_set /* if not set, then bypass reg write*/
-#endif
- ori r3,r3,CPC0_PCI_ARBIT_EN
-#else /* CFG_CPC0_PCI */
- li r3,CFG_CPC0_PCI
-#endif /* CFG_CPC0_PCI */
-..pci_cfg_set:
- mtdcr CPC0_PCI, r3 /* Enable internal arbiter*/
-
/*
!-----------------------------------------------------------------------
! Check to see if chip is in bypass mode.
@@ -1947,11 +1925,50 @@ ppc405ep_init:
..no_pllset:
#endif /* CONFIG_BUBINGA */
+#ifdef CONFIG_TAIHU
+ mfdcr r4, CPC0_BOOT
+ andi. r5, r4, CPC0_BOOT_SEP@l
+ bne strap_1 /* serial eeprom present */
+ addis r5,0,CPLD_REG0_ADDR@h
+ ori r5,r5,CPLD_REG0_ADDR@l
+ andi. r5, r5, 0x10
+ bne _pci_66mhz
+#endif /* CONFIG_TAIHU */
+
+#if defined(CONFIG_ZEUS)
+ mfdcr r4, CPC0_BOOT
+ andi. r5, r4, CPC0_BOOT_SEP@l
+ bne strap_1 /* serial eeprom present */
+ lis r3,0x0000
+ addi r3,r3,0x3030
+ lis r4,0x8042
+ addi r4,r4,0x223e
+ b 1f
+strap_1:
+ mfdcr r3, CPC0_PLLMR0
+ mfdcr r4, CPC0_PLLMR1
+ b 1f
+#endif
+
addis r3,0,PLLMR0_DEFAULT@h /* PLLMR0 default value */
ori r3,r3,PLLMR0_DEFAULT@l /* */
addis r4,0,PLLMR1_DEFAULT@h /* PLLMR1 default value */
ori r4,r4,PLLMR1_DEFAULT@l /* */
+#ifdef CONFIG_TAIHU
+ b 1f
+_pci_66mhz:
+ addis r3,0,PLLMR0_DEFAULT_PCI66@h
+ ori r3,r3,PLLMR0_DEFAULT_PCI66@l
+ addis r4,0,PLLMR1_DEFAULT_PCI66@h
+ ori r4,r4,PLLMR1_DEFAULT_PCI66@l
+ b 1f
+strap_1:
+ mfdcr r3, CPC0_PLLMR0
+ mfdcr r4, CPC0_PLLMR1
+#endif /* CONFIG_TAIHU */
+
+1:
b pll_write /* Write the CPC0_PLLMR with new value */
pll_done: