board/esd/hub405/hub405.c

   1 /*
   2  * (C) Copyright 2001-2003
   3  * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <asm/processor.h>
  26 #include <asm/io.h>
  27 #include <command.h>
  28 #include <malloc.h>
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 extern void lxt971_no_sleep(void);
  33
  34 int board_revision(void)
  35 {
  36         unsigned long osrl_reg;
  37         unsigned long isr1l_reg;
  38         unsigned long tcr_reg;
  39         unsigned long value;
  40
  41         /*
  42          * Get version of HUB405 board from GPIO's
  43          */
  44
  45         /*
  46          * Setup GPIO pin(s) (IRQ6/GPIO23)
  47          */
  48         osrl_reg = in_be32((void *)GPIO0_OSRH);
  49         isr1l_reg = in_be32((void *)GPIO0_ISR1H);
  50         tcr_reg = in_be32((void *)GPIO0_TCR);
  51         out_be32((void *)GPIO0_OSRH, osrl_reg & ~0x00030000);     /* output select */
  52         out_be32((void *)GPIO0_ISR1H, isr1l_reg | 0x00030000);    /* input select  */
  53         out_be32((void *)GPIO0_TCR, tcr_reg & ~0x00000100);       /* select input  */
  54
  55         udelay(1000);            /* wait some time before reading input */
  56         value = in_be32((void *)GPIO0_IR) & 0x00000100;         /* get config bits */
  57
  58         /*
  59          * Restore GPIO settings
  60          */
  61         out_be32((void *)GPIO0_OSRH, osrl_reg);                   /* output select */
  62         out_be32((void *)GPIO0_ISR1H, isr1l_reg);                 /* input select  */
  63         out_be32((void *)GPIO0_TCR, tcr_reg);  /* enable output driver for outputs */
  64
  65         if (value & 0x00000100) {
  66                 /* Revision 1.1 or 1.2 detected */
  67                 return 1;
  68         }
  69
  70         /* Revision 1.0 */
  71         return 0;
  72 }
  73
  74
  75 int board_early_init_f (void)
  76 {
  77         /*
  78          * IRQ 0-15  405GP internally generated; active high; level sensitive
  79          * IRQ 16    405GP internally generated; active low; level sensitive
  80          * IRQ 17-24 RESERVED
  81          * IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
  82          * IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
  83          * IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
  84          * IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
  85          * IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
  86          * IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
  87          * IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
  88          */
  89         mtdcr(UIC0SR, 0xFFFFFFFF);       /* clear all ints */
  90         mtdcr(UIC0ER, 0x00000000);       /* disable all ints */
  91         mtdcr(UIC0CR, 0x00000000);       /* set all to be non-critical*/
  92         mtdcr(UIC0PR, 0xFFFFFF9F);       /* set int polarities */
  93         mtdcr(UIC0TR, 0x10000000);       /* set int trigger levels */
  94         mtdcr(UIC0VCR, 0x00000001);      /* set vect base=0,INT0 highest priority*/
  95         mtdcr(UIC0SR, 0xFFFFFFFF);       /* clear all ints */
  96
  97         /*
  98          * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
  99          */
 100         mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
 101
 102         return 0;
 103 }
 104
 105 #define LED_REG (DUART0_BA + 0x20)
 106 int misc_init_r (void)
 107 {
 108         unsigned long val;
 109         int delay, flashcnt;
 110         char *str;
 111         char hw_rev[4];
 112
 113         /*
 114          * Enable interrupts in exar duart mcr[3]
 115          */
 116         out_8((void *)(DUART0_BA + 4), 0x08);
 117         out_8((void *)(DUART1_BA + 4), 0x08);
 118         out_8((void *)(DUART2_BA + 4), 0x08);
 119         out_8((void *)(DUART3_BA + 4), 0x08);
 120
 121         /*
 122          * Set RS232/RS422 control (RS232 = high on GPIO)
 123          */
 124         val = in_be32((void *)GPIO0_OR);
 125         val &= ~(CONFIG_SYS_UART2_RS232 | CONFIG_SYS_UART3_RS232 |
 126                  CONFIG_SYS_UART4_RS232 | CONFIG_SYS_UART5_RS232);
 127
 128         str = getenv("phys0");
 129         if (!str || (str && (str[0] == '0')))
 130                 val |= CONFIG_SYS_UART2_RS232;
 131
 132         str = getenv("phys1");
 133         if (!str || (str && (str[0] == '0')))
 134                 val |= CONFIG_SYS_UART3_RS232;
 135
 136         str = getenv("phys2");
 137         if (!str || (str && (str[0] == '0')))
 138                 val |= CONFIG_SYS_UART4_RS232;
 139
 140         str = getenv("phys3");
 141         if (!str || (str && (str[0] == '0')))
 142                 val |= CONFIG_SYS_UART5_RS232;
 143
 144         out_be32((void *)GPIO0_OR, val);
 145
 146         /*
 147          * check board type and setup AP power
 148          */
 149         str = getenv("bd_type"); /* this is only set on non prototype hardware */
 150         if (str != NULL) {
 151                 if ((strcmp(str, "swch405") == 0) || ((!strcmp(str, "hub405") && (gd->board_type >= 1)))) {
 152                         unsigned char led_reg_default = 0;
 153                         str = getenv("ap_pwr");
 154                         if (!str || (str && (str[0] == '1')))
 155                                 led_reg_default = 0x04 | 0x02 ; /* U2_LED | AP_PWR */
 156
 157                         /*
 158                          * Flash LEDs
 159                          */
 160                         for (flashcnt = 0; flashcnt < 3; flashcnt++) {
 161                                 /* LED_A..D off */
 162                                 out_8((void *)LED_REG, led_reg_default);
 163                                 for (delay = 0; delay < 100; delay++)
 164                                         udelay(1000);
 165                                 /* LED_A..D on */
 166                                 out_8((void *)LED_REG, led_reg_default | 0xf0);
 167                                 for (delay = 0; delay < 50; delay++)
 168                                         udelay(1000);
 169                         }
 170                         out_8((void *)LED_REG, led_reg_default);
 171                 }
 172         }
 173
 174         /*
 175          * Reset external DUARTs
 176          */
 177         out_be32((void *)GPIO0_OR,
 178                  in_be32((void *)GPIO0_OR) | CONFIG_SYS_DUART_RST); /* set reset to high */
 179         udelay(10); /* wait 10us */
 180         out_be32((void *)GPIO0_OR,
 181                  in_be32((void *)GPIO0_OR) & ~CONFIG_SYS_DUART_RST); /* set reset to low */
 182         udelay(1000); /* wait 1ms */
 183
 184         /*
 185          * Store hardware revision in environment for further processing
 186          */
 187         sprintf(hw_rev, "1.%ld", gd->board_type);
 188         setenv("hw_rev", hw_rev);
 189         return (0);
 190 }
 191
 192
 193 /*
 194  * Check Board Identity:
 195  */
 196 int checkboard (void)
 197 {
 198         char str[64];
 199         int i = getenv_f("serial#", str, sizeof(str));
 200
 201         puts ("Board: ");
 202
 203         if (i == -1) {
 204                 puts ("### No HW ID - assuming HUB405");
 205         } else {
 206                 puts(str);
 207         }
 208
 209         if (getenv_f("bd_type", str, sizeof(str)) != -1) {
 210                 printf(" (%s", str);
 211         } else {
 212                 puts(" (Missing bd_type!");
 213         }
 214
 215         gd->board_type = board_revision();
 216         printf(", Rev 1.%ld)\n", gd->board_type);
 217
 218         /*
 219          * Disable sleep mode in LXT971
 220          */
 221         lxt971_no_sleep();
 222
 223         return 0;
 224 }