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
  34 extern int lcd_init(void);
  35
  36 /*
  37  * board_early_init_f
  38  */
  39 int 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  */
  66 int checkboard(void)
  67 {
  68         char buf[64];
  69         int i = getenv_f("serial#", buf, sizeof(buf));
  70
  71         puts("Board: Taihu - AMCC PPC405EP Evaluation Board");
  72
  73         if (i > 0) {
  74                 puts(", serial# ");
  75                 puts(buf);
  76         }
  77         putc('\n');
  78
  79         return 0;
  80 }
  81
  82 static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
  83 {
  84         char stat;
  85         int i;
  86
  87         stat = in_8((u8 *) CPLD_REG0_ADDR);
  88         printf("SW2 status: ");
  89         for (i=0; i<4; i++) /* 4-position */
  90                 printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off");
  91         printf("\n");
  92         return 0;
  93 }
  94
  95 U_BOOT_CMD (
  96         sw2_stat, 1, 1, do_sw_stat,
  97         "show status of switch 2",
  98         ""
  99 );
 100
 101 static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
 102 {
 103         int led_no;
 104
 105         if (argc != 3)
 106                 return cmd_usage(cmd_tp);
 107
 108         led_no = simple_strtoul(argv[1], NULL, 16);
 109         if (led_no != 1 && led_no != 2)
 110                 return cmd_usage(cmd_tp);
 111
 112         if (strcmp(argv[2],"off") == 0x0) {
 113                 if (led_no == 1)
 114                         gpio_write_bit(30, 1);
 115                 else
 116                         gpio_write_bit(31, 1);
 117         } else if (strcmp(argv[2],"on") == 0x0) {
 118                 if (led_no == 1)
 119                         gpio_write_bit(30, 0);
 120                 else
 121                         gpio_write_bit(31, 0);
 122         } else {
 123                 return cmd_usage(cmd_tp);
 124         }
 125
 126         return 0;
 127 }
 128
 129 U_BOOT_CMD (
 130         led_ctl, 3, 1, do_led_ctl,
 131         "make led 1 or 2  on or off",
 132         "<led_no> <on/off>      -  make led <led_no> on/off,\n"
 133         "\tled_no is 1 or 2"
 134 );
 135
 136 #define SPI_CS_GPIO0    0
 137 #define SPI_SCLK_GPIO14 14
 138 #define SPI_DIN_GPIO15  15
 139 #define SPI_DOUT_GPIO16 16
 140
 141 void spi_scl(int bit)
 142 {
 143         gpio_write_bit(SPI_SCLK_GPIO14, bit);
 144 }
 145
 146 void spi_sda(int bit)
 147 {
 148         gpio_write_bit(SPI_DOUT_GPIO16, bit);
 149 }
 150
 151 unsigned char spi_read(void)
 152 {
 153         return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
 154 }
 155
 156 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 157 {
 158         return bus == 0 && cs == 0;
 159 }
 160
 161 void spi_cs_activate(struct spi_slave *slave)
 162 {
 163         gpio_write_bit(SPI_CS_GPIO0, 1);
 164 }
 165
 166 void spi_cs_deactivate(struct spi_slave *slave)
 167 {
 168         gpio_write_bit(SPI_CS_GPIO0, 0);
 169 }
 170
 171 #ifdef CONFIG_PCI
 172 static unsigned char int_lines[32] = {
 173         29, 30, 27, 28, 29, 30, 25, 27,
 174         29, 30, 27, 28, 29, 30, 27, 28,
 175         29, 30, 27, 28, 29, 30, 27, 28,
 176         29, 30, 27, 28, 29, 30, 27, 28};
 177
 178 static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
 179 {
 180         unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
 181
 182         pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
 183 }
 184
 185 int pci_pre_init(struct pci_controller *hose)
 186 {
 187         hose->fixup_irq = taihu_pci_fixup_irq;
 188         return 1;
 189 }
 190 #endif /* CONFIG_PCI */
 191
 192 int board_eth_init(bd_t *bis)
 193 {
 194         cpu_eth_init(bis);
 195         return pci_eth_init(bis);
 196 }