diff options
Diffstat (limited to 'u-boot/board/amcc/taihu/taihu.c')
| -rw-r--r-- | u-boot/board/amcc/taihu/taihu.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/u-boot/board/amcc/taihu/taihu.c b/u-boot/board/amcc/taihu/taihu.c new file mode 100644 index 0000000..87c9403 --- /dev/null +++ b/u-boot/board/amcc/taihu/taihu.c @@ -0,0 +1,195 @@ +/* + * (C) Copyright 2000-2005 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2005-2007 + * Beijing UD Technology Co., Ltd., taihusupport@amcc.com + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <command.h> +#include <asm/processor.h> +#include <asm/io.h> +#include <spi.h> +#include <netdev.h> +#include <asm/ppc4xx-gpio.h> + +extern int lcd_init(void); + +/* + * board_early_init_f + */ +int board_early_init_f(void) +{ + lcd_init(); + + mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */ + mtdcr(UIC0ER, 0x00000000); /* disable all ints */ + mtdcr(UIC0CR, 0x00000000); + mtdcr(UIC0PR, 0xFFFF7F00); /* set int polarities */ + mtdcr(UIC0TR, 0x00000000); /* set int trigger levels */ + mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */ + mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */ + + mtebc(PB3AP, CONFIG_SYS_EBC_PB3AP); /* memory bank 3 (CPLD_LCM) initialization */ + mtebc(PB3CR, CONFIG_SYS_EBC_PB3CR); + + /* + * Configure CPC0_PCI to enable PerWE as output + * and enable the internal PCI arbiter + */ + mtdcr(CPC0_PCI, CPC0_PCI_SPE | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN); + + return 0; +} + +/* + * Check Board Identity: + */ +int checkboard(void) +{ + char *s = getenv("serial#"); + + puts("Board: Taihu - AMCC PPC405EP Evaluation Board"); + + if (s != NULL) { + puts(", serial# "); + puts(s); + } + putc('\n'); + + return 0; +} + +static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[]) +{ + char stat; + int i; + + stat = in_8((u8 *) CPLD_REG0_ADDR); + printf("SW2 status: "); + for (i=0; i<4; i++) /* 4-position */ + printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off"); + printf("\n"); + return 0; +} + +U_BOOT_CMD ( + sw2_stat, 1, 1, do_sw_stat, + "show status of switch 2", + "" +); + +static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[]) +{ + int led_no; + + if (argc != 3) + return cmd_usage(cmd_tp); + + led_no = simple_strtoul(argv[1], NULL, 16); + if (led_no != 1 && led_no != 2) + return cmd_usage(cmd_tp); + + if (strcmp(argv[2],"off") == 0x0) { + if (led_no == 1) + gpio_write_bit(30, 1); + else + gpio_write_bit(31, 1); + } else if (strcmp(argv[2],"on") == 0x0) { + if (led_no == 1) + gpio_write_bit(30, 0); + else + gpio_write_bit(31, 0); + } else { + return cmd_usage(cmd_tp); + } + + return 0; +} + +U_BOOT_CMD ( + led_ctl, 3, 1, do_led_ctl, + "make led 1 or 2 on or off", + "<led_no> <on/off> - make led <led_no> on/off,\n" + "\tled_no is 1 or 2" +); + +#define SPI_CS_GPIO0 0 +#define SPI_SCLK_GPIO14 14 +#define SPI_DIN_GPIO15 15 +#define SPI_DOUT_GPIO16 16 + +void spi_scl(int bit) +{ + gpio_write_bit(SPI_SCLK_GPIO14, bit); +} + +void spi_sda(int bit) +{ + gpio_write_bit(SPI_DOUT_GPIO16, bit); +} + +unsigned char spi_read(void) +{ + return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15); +} + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + return bus == 0 && cs == 0; +} + +void spi_cs_activate(struct spi_slave *slave) +{ + gpio_write_bit(SPI_CS_GPIO0, 1); +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + gpio_write_bit(SPI_CS_GPIO0, 0); +} + +#ifdef CONFIG_PCI +static unsigned char int_lines[32] = { + 29, 30, 27, 28, 29, 30, 25, 27, + 29, 30, 27, 28, 29, 30, 27, 28, + 29, 30, 27, 28, 29, 30, 27, 28, + 29, 30, 27, 28, 29, 30, 27, 28}; + +static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev) +{ + unsigned char int_line = int_lines[PCI_DEV(dev) & 31]; + + pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line); +} + +int pci_pre_init(struct pci_controller *hose) +{ + hose->fixup_irq = taihu_pci_fixup_irq; + return 1; +} +#endif /* CONFIG_PCI */ + +int board_eth_init(bd_t *bis) +{ + cpu_eth_init(bis); + return pci_eth_init(bis); +} |