diff options
Diffstat (limited to 'board/amcc')
| -rw-r--r-- | board/amcc/yosemite/yosemite.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/board/amcc/yosemite/yosemite.c b/board/amcc/yosemite/yosemite.c index 7ceccfa..ccbeb0e 100644 --- a/board/amcc/yosemite/yosemite.c +++ b/board/amcc/yosemite/yosemite.c @@ -33,6 +33,15 @@ DECLARE_GLOBAL_DATA_PTR; extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ +static inline u32 get_async_pci_freq(void) +{ + if (in_8((void *)(CONFIG_SYS_BCSR_BASE + 5)) & + CONFIG_SYS_BCSR5_PCI66EN) + return 66666666; + else + return 33333333; +} + int board_early_init_f(void) { register uint reg; @@ -106,6 +115,9 @@ int board_early_init_f(void) mtsdr(SDR0_PFC0, 0x00003e00); /* Pin function */ mtsdr(SDR0_PFC1, 0x00048000); /* Pin function: UART0 has 4 pins */ + /* Check and reconfigure the PCI sync clock if necessary */ + ppc4xx_pci_sync_clock_config(get_async_pci_freq()); + /*clear tmrclk divisor */ *(unsigned char *)(CONFIG_SYS_BCSR_BASE | 0x04) = 0x00; @@ -178,7 +190,7 @@ int checkboard(void) { char *s = getenv("serial#"); u8 rev; - u8 val; + u32 clock = get_async_pci_freq(); #ifdef CONFIG_440EP printf("Board: Yosemite - AMCC PPC440EP Evaluation Board"); @@ -187,8 +199,7 @@ int checkboard(void) #endif rev = in_8((void *)(CONFIG_SYS_BCSR_BASE + 0)); - val = in_8((void *)(CONFIG_SYS_BCSR_BASE + 5)) & CONFIG_SYS_BCSR5_PCI66EN; - printf(", Rev. %X, PCI=%d MHz", rev, val ? 66 : 33); + printf(", Rev. %X, PCI-Async=%d MHz", rev, clock / 1000000); if (s != NULL) { puts(", serial# "); @@ -196,6 +207,15 @@ int checkboard(void) } putc('\n'); + /* + * Reconfiguration of the PCI sync clock is already done, + * now check again if everything is in range: + */ + if (ppc4xx_pci_sync_clock_config(clock)) { + printf("ERROR: PCI clocking incorrect (async=%d " + "sync=%ld)!\n", clock, get_PCI_freq()); + } + return (0); } |