diff options
Diffstat (limited to 'board/amcc/bamboo/bamboo.c')
| -rw-r--r-- | board/amcc/bamboo/bamboo.c | 122 |
1 files changed, 103 insertions, 19 deletions
diff --git a/board/amcc/bamboo/bamboo.c b/board/amcc/bamboo/bamboo.c index 0d5ab71..d02add5 100644 --- a/board/amcc/bamboo/bamboo.c +++ b/board/amcc/bamboo/bamboo.c @@ -29,6 +29,7 @@ void ext_bus_cntlr_init(void); void configure_ppc440ep_pins(void); +int is_nand_selected(void); gpio_param_s gpio_tab[GPIO_GROUP_MAX][GPIO_MAX]; #if 0 @@ -132,10 +133,10 @@ gpio_param_s gpio_tab[GPIO_GROUP_MAX][GPIO_MAX]; EBC0_BNCR_BW_8BIT #define EBC0_BNCR_SMALL_FLASH_CS4 \ - EBC0_BNCR_BAS_ENCODE(0x87800000) | \ - EBC0_BNCR_BS_8MB | \ + EBC0_BNCR_BAS_ENCODE(0x87F00000) | \ + EBC0_BNCR_BS_1MB | \ EBC0_BNCR_BU_RW | \ - EBC0_BNCR_BW_16BIT + EBC0_BNCR_BW_8BIT /* Large Flash or SRAM */ #define EBC0_BNAP_LARGE_FLASH_OR_SRAM \ @@ -273,6 +274,87 @@ int board_early_init_f(void) return 0; } +#if (CONFIG_COMMANDS & CFG_CMD_NAND) +#include <linux/mtd/nand.h> +extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE]; + +/*----------------------------------------------------------------------------+ + | nand_reset. + | Reset Nand flash + | This routine will abort previous cmd + +----------------------------------------------------------------------------*/ +int nand_reset(ulong addr) +{ + int wait=0, stat=0; + + out8(addr + NAND_CMD_REG, NAND0_CMD_RESET); + out8(addr + NAND_CMD_REG, NAND0_CMD_READ_STATUS); + + while ((stat != 0xc0) && (wait != 0xffff)) { + stat = in8(addr + NAND_DATA_REG); + wait++; + } + + if (stat == 0xc0) { + return 0; + } else { + printf("NAND Reset timeout.\n"); + return -1; + } +} + +void board_nand_set_device(int cs, ulong addr) +{ + /* Set NandFlash Core Configuration Register */ + out32(addr + NAND_CCR_REG, 0x00001000 | (cs << 24)); + + switch (cs) { + case 1: + /* ------- + * NAND0 + * ------- + * K9F1208U0A : 4 addr cyc, 1 col + 3 Row + * Set NDF1CR - Enable External CS1 in NAND FLASH controller + */ + out32(addr + NAND_CR1_REG, 0x80002222); + break; + + case 2: + /* ------- + * NAND1 + * ------- + * K9K2G0B : 5 addr cyc, 2 col + 3 Row + * Set NDF2CR : Enable External CS2 in NAND FLASH controller + */ + out32(addr + NAND_CR2_REG, 0xC0007777); + break; + } + + /* Perform Reset Command */ + if (nand_reset(addr) != 0) + return; +} + +void nand_init(void) +{ + board_nand_set_device(1, CFG_NAND_ADDR); + + nand_probe(CFG_NAND_ADDR); + if (nand_dev_desc[0].ChipID != NAND_ChipID_UNKNOWN) { + print_size(nand_dev_desc[0].totlen, "\n"); + } + +#if 0 /* NAND1 not supported yet */ + board_nand_set_device(2, CFG_NAND2_ADDR); + + nand_probe(CFG_NAND2_ADDR); + if (nand_dev_desc[0].ChipID != NAND_ChipID_UNKNOWN) { + print_size(nand_dev_desc[0].totlen, "\n"); + } +#endif +} +#endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */ + int checkboard(void) { sys_info_t sysinfo; @@ -585,7 +667,11 @@ int is_powerpc440ep_pass1(void) +----------------------------------------------------------------------------*/ int is_nand_selected(void) { - return FALSE; /* test-only */ +#ifdef CONFIG_BAMBOO_NAND + return TRUE; +#else + return FALSE; +#endif } /*----------------------------------------------------------------------------+ @@ -829,12 +915,8 @@ void ext_bus_cntlr_init(void) /* NAND Flash */ ebc0_cs1_bnap_value = EBC0_BNAP_NAND_FLASH; ebc0_cs1_bncr_value = EBC0_BNCR_NAND_FLASH_CS1; - /*ebc0_cs2_bnap_value = EBC0_BNAP_NAND_FLASH; - ebc0_cs2_bncr_value = EBC0_BNCR_NAND_FLASH_CS2; - ebc0_cs3_bnap_value = EBC0_BNAP_NAND_FLASH; - ebc0_cs3_bncr_value = EBC0_BNCR_NAND_FLASH_CS3;*/ - ebc0_cs2_bnap_value = 0; - ebc0_cs2_bncr_value = 0; + ebc0_cs2_bnap_value = EBC0_BNAP_NAND_FLASH; + ebc0_cs2_bncr_value = EBC0_BNCR_NAND_FLASH_CS2; ebc0_cs3_bnap_value = 0; ebc0_cs3_bncr_value = 0; } else { @@ -985,7 +1067,7 @@ void ext_bus_cntlr_init(void) +----------------------------------------------------------------------------*/ uart_config_nb_t get_uart_configuration(void) { - return (L4); /* test-only */ + return (L4); } /*----------------------------------------------------------------------------+ @@ -1132,8 +1214,7 @@ void ndfc_selection_in_fpga(void) fpga_selection_1_reg = in8(FPGA_SELECTION_1_REG) &~FPGA_SEL_1_REG_NF_SELEC_MASK; fpga_selection_1_reg |= FPGA_SEL_1_REG_NF0_SEL_BY_NFCS1; - /*fpga_selection_1_reg |= FPGA_SEL_1_REG_NF1_SEL_BY_NFCS2; */ - /*fpga_selection_1_reg |= FPGA_SEL_1_REG_NF1_SEL_BY_NFCS3; */ + fpga_selection_1_reg |= FPGA_SEL_1_REG_NF1_SEL_BY_NFCS2; out8(FPGA_SELECTION_1_REG,fpga_selection_1_reg); } @@ -1725,11 +1806,15 @@ void force_bup_core_selection(core_selection_t *core_select_P, config_validity_t *(core_select_P+UIC_0_3) = CORE_SELECTED; *(core_select_P+UIC_4_9) = CORE_SELECTED; - *(core_select_P+SCP_CORE) = CORE_SELECTED; - *(core_select_P+DMA_CHANNEL_CD) = CORE_SELECTED; - *(core_select_P+PACKET_REJ_FUNC_AVAIL) = CORE_SELECTED; + *(core_select_P+SCP_CORE) = CORE_SELECTED; + *(core_select_P+DMA_CHANNEL_CD) = CORE_SELECTED; + *(core_select_P+PACKET_REJ_FUNC_AVAIL) = CORE_SELECTED; *(core_select_P+USB1_DEVICE) = CORE_SELECTED; + if (is_nand_selected()) { + *(core_select_P+NAND_FLASH) = CORE_SELECTED; + } + *config_val_P = CONFIG_IS_VALID; } @@ -1901,9 +1986,8 @@ void configure_ppc440ep_pins(void) SDR0_CUST0_NDFC_ENABLE | SDR0_CUST0_NDFC_BW_8_BIT | SDR0_CUST0_NDFC_ARE_MASK | - SDR0_CUST0_CHIPSELGAT_EN1 ); - /*SDR0_CUST0_CHIPSELGAT_EN2 ); */ - /*SDR0_CUST0_CHIPSELGAT_EN3 ); */ + SDR0_CUST0_CHIPSELGAT_EN1 | + SDR0_CUST0_CHIPSELGAT_EN2); ndfc_selection_in_fpga(); } |