LXR uboot/board/amcc/taihu/taihu.c

   1/*
   2 * (C) Copyright 2000-2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2005-2007
   6 * Beijing UD Technology Co., Ltd., taihusupport@amcc.com
   7 *
   8 * See file CREDITS for list of people who contributed to this
   9 * project.
  10 *
  11 * This program is free software; you can redistribute it and/or
  12 * modify it under the terms of the GNU General Public License as
  13 * published by the Free Software Foundation; either version 2 of
  14 * the License, or (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24 * MA 02111-1307 USA
  25 */
  26#include <common.h>
  27#include <command.h>
  28#include <asm/processor.h>
  29#include <asm/io.h>
  30#include <spi.h>
  31#include <netdev.h>
  32#include <asm/ppc4xx-gpio.h>
  33
  34extern int lcd_init(void);
  35
  36/*
  37 * board_early_init_f
  38 */
  39int board_early_init_f(void)
  40{
  41        lcd_init();
  42
  43        mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  44        mtdcr(UIC0ER, 0x00000000);      /* disable all ints */
  45        mtdcr(UIC0CR, 0x00000000);
  46        mtdcr(UIC0PR, 0xFFFF7F00);      /* set int polarities */
  47        mtdcr(UIC0TR, 0x00000000);      /* set int trigger levels */
  48        mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  49        mtdcr(UIC0VCR, 0x00000001);     /* set vect base=0,INT0 highest priority */
  50
  51        mtebc(PB3AP, CONFIG_SYS_EBC_PB3AP);     /* memory bank 3 (CPLD_LCM) initialization */
  52        mtebc(PB3CR, CONFIG_SYS_EBC_PB3CR);
  53
  54        /*
  55         * Configure CPC0_PCI to enable PerWE as output
  56         * and enable the internal PCI arbiter
  57         */
  58        mtdcr(CPC0_PCI, CPC0_PCI_SPE | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
  59
  60        return 0;
  61}
  62
  63/*
  64 * Check Board Identity:
  65 */
  66int checkboard(void)
  67{
  68        char *s = getenv("serial#");
  69
  70        puts("Board: Taihu - AMCC PPC405EP Evaluation Board");
  71
  72        if (s != NULL) {
  73                puts(", serial# ");
  74                puts(s);
  75        }
  76        putc('\n');
  77
  78        return 0;
  79}
  80
  81static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
  82{
  83        char stat;
  84        int i;
  85
  86        stat = in_8((u8 *) CPLD_REG0_ADDR);
  87        printf("SW2 status: ");
  88        for (i=0; i<4; i++) /* 4-position */
  89                printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off");
  90        printf("\n");
  91        return 0;
  92}
  93
  94U_BOOT_CMD (
  95        sw2_stat, 1, 1, do_sw_stat,
  96        "show status of switch 2",
  97        ""
  98);
  99
 100static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
 101{
 102        int led_no;
 103
 104        if (argc != 3)
 105                return cmd_usage(cmd_tp);
 106
 107        led_no = simple_strtoul(argv[1], NULL, 16);
 108        if (led_no != 1 && led_no != 2)
 109                return cmd_usage(cmd_tp);
 110
 111        if (strcmp(argv[2],"off") == 0x0) {
 112                if (led_no == 1)
 113                        gpio_write_bit(30, 1);
 114                else
 115                        gpio_write_bit(31, 1);
 116        } else if (strcmp(argv[2],"on") == 0x0) {
 117                if (led_no == 1)
 118                        gpio_write_bit(30, 0);
 119                else
 120                        gpio_write_bit(31, 0);
 121        } else {
 122                return cmd_usage(cmd_tp);
 123        }
 124
 125        return 0;
 126}
 127
 128U_BOOT_CMD (
 129        led_ctl, 3, 1, do_led_ctl,
 130        "make led 1 or 2  on or off",
 131        "<led_no> <on/off>      -  make led <led_no> on/off,\n"
 132        "\tled_no is 1 or 2"
 133);
 134
 135#define SPI_CS_GPIO0    0
 136#define SPI_SCLK_GPIO14 14
 137#define SPI_DIN_GPIO15  15
 138#define SPI_DOUT_GPIO16 16
 139
 140void spi_scl(int bit)
 141{
 142        gpio_write_bit(SPI_SCLK_GPIO14, bit);
 143}
 144
 145void spi_sda(int bit)
 146{
 147        gpio_write_bit(SPI_DOUT_GPIO16, bit);
 148}
 149
 150unsigned char spi_read(void)
 151{
 152        return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
 153}
 154
 155int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 156{
 157        return bus == 0 && cs == 0;
 158}
 159
 160void spi_cs_activate(struct spi_slave *slave)
 161{
 162        gpio_write_bit(SPI_CS_GPIO0, 1);
 163}
 164
 165void spi_cs_deactivate(struct spi_slave *slave)
 166{
 167        gpio_write_bit(SPI_CS_GPIO0, 0);
 168}
 169
 170#ifdef CONFIG_PCI
 171static unsigned char int_lines[32] = {
 172        29, 30, 27, 28, 29, 30, 25, 27,
 173        29, 30, 27, 28, 29, 30, 27, 28,
 174        29, 30, 27, 28, 29, 30, 27, 28,
 175        29, 30, 27, 28, 29, 30, 27, 28};
 176
 177static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
 178{
 179        unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
 180
 181        pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
 182}
 183
 184int pci_pre_init(struct pci_controller *hose)
 185{
 186        hose->fixup_irq = taihu_pci_fixup_irq;
 187        return 1;
 188}
 189#endif /* CONFIG_PCI */
 190
 191int board_eth_init(bd_t *bis)
 192{
 193        cpu_eth_init(bis);
 194        return pci_eth_init(bis);
 195}
 196