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/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(uicsr, 0xFFFFFFFF);       /* clear all ints */
  44         mtdcr(uicer, 0x00000000);       /* disable all ints */
  45         mtdcr(uiccr, 0x00000000);
  46         mtdcr(uicpr, 0xFFFF7F00);       /* set int polarities */
  47         mtdcr(uictr, 0x00000000);       /* set int trigger levels */
  48         mtdcr(uicsr, 0xFFFFFFFF);       /* clear all ints */
  49         mtdcr(uicvcr, 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 *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
  81 static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char *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
  94 U_BOOT_CMD (
  95         sw2_stat, 1, 1, do_sw_stat,
  96         "sw2_stat - show status of switch 2\n",
  97         NULL
  98         );
  99
 100 static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
 101 {
 102         int led_no;
 103
 104         if (argc != 3) {
 105                 printf("%s", cmd_tp->usage);
 106                 return -1;
 107         }
 108
 109         led_no = simple_strtoul(argv[1], NULL, 16);
 110         if (led_no != 1 && led_no != 2) {
 111                 printf("%s", cmd_tp->usage);
 112                 return -1;
 113         }
 114
 115         if (strcmp(argv[2],"off") == 0x0) {
 116                 if (led_no == 1)
 117                         gpio_write_bit(30, 1);
 118                 else
 119                         gpio_write_bit(31, 1);
 120         } else if (strcmp(argv[2],"on") == 0x0) {
 121                 if (led_no == 1)
 122                         gpio_write_bit(30, 0);
 123                 else
 124                         gpio_write_bit(31, 0);
 125         } else {
 126                 printf("%s", cmd_tp->usage);
 127                 return -1;
 128         }
 129
 130         return 0;
 131 }
 132
 133 U_BOOT_CMD (
 134         led_ctl, 3, 1, do_led_ctl,
 135         "led_ctl        - make led 1 or 2  on or off\n",
 136         "<led_no> <on/off>      -  make led <led_no> on/off,\n"
 137         "\tled_no is 1 or 2\t"
 138         );
 139
 140 #define SPI_CS_GPIO0    0
 141 #define SPI_SCLK_GPIO14 14
 142 #define SPI_DIN_GPIO15  15
 143 #define SPI_DOUT_GPIO16 16
 144
 145 void spi_scl(int bit)
 146 {
 147         gpio_write_bit(SPI_SCLK_GPIO14, bit);
 148 }
 149
 150 void spi_sda(int bit)
 151 {
 152         gpio_write_bit(SPI_DOUT_GPIO16, bit);
 153 }
 154
 155 unsigned char spi_read(void)
 156 {
 157         return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
 158 }
 159
 160 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 161 {
 162         return bus == 0 && cs == 0;
 163 }
 164
 165 void spi_cs_activate(struct spi_slave *slave)
 166 {
 167         gpio_write_bit(SPI_CS_GPIO0, 1);
 168 }
 169
 170 void spi_cs_deactivate(struct spi_slave *slave)
 171 {
 172         gpio_write_bit(SPI_CS_GPIO0, 0);
 173 }
 174
 175 #ifdef CONFIG_PCI
 176 static unsigned char int_lines[32] = {
 177         29, 30, 27, 28, 29, 30, 25, 27,
 178         29, 30, 27, 28, 29, 30, 27, 28,
 179         29, 30, 27, 28, 29, 30, 27, 28,
 180         29, 30, 27, 28, 29, 30, 27, 28};
 181
 182 static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
 183 {
 184         unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
 185
 186         pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
 187 }
 188
 189 int pci_pre_init(struct pci_controller *hose)
 190 {
 191         hose->fixup_irq = taihu_pci_fixup_irq;
 192         return 1;
 193 }
 194 #endif /* CONFIG_PCI */
 195
 196 int board_eth_init(bd_t *bis)
 197 {
 198         return pci_eth_init(bis);
 199 }