diff options
Diffstat (limited to 'board/amcc/yucca/yucca.c')
| -rw-r--r-- | board/amcc/yucca/yucca.c | 63 |
1 files changed, 55 insertions, 8 deletions
diff --git a/board/amcc/yucca/yucca.c b/board/amcc/yucca/yucca.c index 90eaab1..d7cc384 100644 --- a/board/amcc/yucca/yucca.c +++ b/board/amcc/yucca/yucca.c @@ -34,6 +34,8 @@ #include "yucca.h" #include "../cpu/ppc4xx/440spe_pcie.h" +DECLARE_GLOBAL_DATA_PTR; + #undef PCIE_ENDPOINT /* #define PCIE_ENDPOINT 1 */ @@ -562,6 +564,40 @@ int checkboard (void) return 0; } +/* + * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with + * board specific values. + */ +static int ppc440spe_rev_a(void) +{ + if ((get_pvr() == PVR_440SPe_6_RA) || (get_pvr() == PVR_440SPe_RA)) + return 1; + else + return 0; +} + +u32 ddr_wrdtr(u32 default_val) { + /* + * Yucca boards with 440SPe rev. A need a slightly different setup + * for the MCIF0_WRDTR register. + */ + if (ppc440spe_rev_a()) + return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_270_DEG_ADV); + + return default_val; +} + +u32 ddr_clktr(u32 default_val) { + /* + * Yucca boards with 440SPe rev. A need a slightly different setup + * for the MCIF0_CLKTR register. + */ + if (ppc440spe_rev_a()) + return (SDRAM_CLKTR_CLKP_180_DEG_ADV); + + return default_val; +} + #if defined(CFG_DRAM_TEST) int testdram (void) { @@ -604,7 +640,7 @@ int testdram (void) * certain pre-initialization actions. * ************************************************************************/ -#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) +#if defined(CONFIG_PCI) int pci_pre_init(struct pci_controller * hose ) { unsigned long strap; @@ -621,7 +657,7 @@ int pci_pre_init(struct pci_controller * hose ) return 1; } -#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */ +#endif /* defined(CONFIG_PCI) */ /************************************************************************* * pci_target_init @@ -634,8 +670,6 @@ int pci_pre_init(struct pci_controller * hose ) #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) void pci_target_init(struct pci_controller * hose ) { - DECLARE_GLOBAL_DATA_PTR; - /*-------------------------------------------------------------------+ * Disable everything *-------------------------------------------------------------------*/ @@ -812,16 +846,18 @@ void yucca_setup_pcie_fpga_endpoint(int port) static struct pci_controller pcie_hose[3] = {{0},{0},{0}}; -void pcie_setup_hoses(void) +void pcie_setup_hoses(int busno) { struct pci_controller *hose; int i, bus; + char *env; + unsigned int delay; /* * assume we're called after the PCIX hose is initialized, which takes * bus ID 0 and therefore start numbering PCIe's from 1. */ - bus = 1; + bus = busno; for (i = 0; i <= 2; i++) { /* Check for yucca card presence */ if (!yucca_pcie_card_present(i)) @@ -840,8 +876,8 @@ void pcie_setup_hoses(void) hose = &pcie_hose[i]; hose->first_busno = bus; - hose->last_busno = bus; - bus++; + hose->last_busno = bus; + hose->current_busno = bus; /* setup mem resource */ pci_set_region(hose->regions + 0, @@ -861,10 +897,21 @@ void pcie_setup_hoses(void) */ #else ppc440spe_setup_pcie_rootpoint(hose, i); + + env = getenv ("pciscandelay"); + if (env != NULL) { + delay = simple_strtoul (env, NULL, 10); + if (delay > 5) + printf ("Warning, expect noticable delay before PCIe" + "scan due to 'pciscandelay' value!\n"); + mdelay (delay * 1000); + } + /* * Config access can only go down stream */ hose->last_busno = pci_hose_scan(hose); + bus = hose->last_busno + 1; #endif } } |