board/stamp/stamp.c

   1 /*
   2  * U-boot - stamp.c STAMP board specific routines
   3  *
   4  * Copyright (c) 2005 blackfin.uclinux.org
   5  *
   6  * (C) Copyright 2000-2004
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <asm/mem_init.h>
  30 #include "stamp.h"
  31
  32 #define STATUS_LED_OFF 0
  33 #define STATUS_LED_ON  1
  34
  35 #ifdef CONFIG_SHOW_BOOT_PROGRESS
  36 # define SHOW_BOOT_PROGRESS(arg)        show_boot_progress(arg)
  37 #else
  38 # define SHOW_BOOT_PROGRESS(arg)
  39 #endif
  40
  41 int checkboard (void)
  42 {
  43         printf ("CPU:   ADSP BF533 Rev.: 0.%d\n", *pCHIPID >> 28);
  44         printf ("Board: ADI BF533 Stamp board\n");
  45         printf ("       Support: http://blackfin.uclinux.org/\n");
  46         printf ("       Richard Klingler <richard@uclinux.net>\n");
  47         return 0;
  48 }
  49
  50 long int initdram (int board_type)
  51 {
  52         DECLARE_GLOBAL_DATA_PTR;
  53 #ifdef DEBUG
  54         printf ("SDRAM attributes:\n");
  55         printf ("  tRCD:%d Cycles; tRP:%d Cycles; tRAS:%d Cycles; tWR:%d Cycles; "
  56                 "CAS Latency:%d cycles\n",
  57                 (SDRAM_tRCD >> 15),
  58                 (SDRAM_tRP >> 11),
  59                 (SDRAM_tRAS >> 6),
  60                 (SDRAM_tWR >> 19),
  61                 (SDRAM_CL >> 2));
  62         printf ("SDRAM Begin: 0x%x\n", CFG_SDRAM_BASE);
  63         printf ("Bank size = %d MB\n", 128);
  64 #endif
  65         gd->bd->bi_memstart = CFG_SDRAM_BASE;
  66         gd->bd->bi_memsize = CFG_MAX_RAM_SIZE;
  67         return (gd->bd->bi_memsize);
  68 }
  69
  70 void swap_to (int device_id)
  71 {
  72
  73         if (device_id == ETHERNET) {
  74                 *pFIO_DIR = PF0;
  75                 asm ("ssync;");
  76                 *pFIO_FLAG_S = PF0;
  77                 asm ("ssync;");
  78         } else if (device_id == FLASH) {
  79                 *pFIO_DIR = (PF4 | PF3 | PF2 | PF1 | PF0);
  80                 *pFIO_FLAG_S = (PF4 | PF3 | PF2);
  81                 *pFIO_MASKA_D = (PF8 | PF6 | PF5);
  82                 *pFIO_MASKB_D = (PF7);
  83                 *pFIO_POLAR = (PF8 | PF6 | PF5);
  84                 *pFIO_EDGE = (PF8 | PF7 | PF6 | PF5);
  85                 *pFIO_INEN = (PF8 | PF7 | PF6 | PF5);
  86                 *pFIO_FLAG_D = (PF4 | PF3 | PF2);
  87                 asm ("ssync;");
  88         } else {
  89                 printf ("Unknown bank to switch\n");
  90         }
  91
  92         return;
  93 }
  94
  95 #if defined(CONFIG_MISC_INIT_R)
  96 /* miscellaneous platform dependent initialisations */
  97 int misc_init_r (void)
  98 {
  99         int i;
 100         int cf_stat = 0;
 101
 102         /* Check whether CF card is inserted */
 103         *pFIO_EDGE = FIO_EDGE_CF_BITS;
 104         *pFIO_POLAR = FIO_POLAR_CF_BITS;
 105         for (i = 0; i < 0x300; i++)
 106                 asm ("nop;");
 107
 108         if ((*pFIO_FLAG_S) & CF_STAT_BITS) {
 109                 cf_stat = 0;
 110         } else {
 111                 cf_stat = 1;
 112         }
 113
 114         *pFIO_EDGE = FIO_EDGE_BITS;
 115         *pFIO_POLAR = FIO_POLAR_BITS;
 116
 117
 118         if (cf_stat) {
 119                 printf ("Booting from COMPACT flash\n");
 120
 121                 /* Set cycle time for CF */
 122                 *(volatile unsigned long *) ambctl1 = CF_AMBCTL1VAL;
 123
 124                 for (i = 0; i < 0x1000; i++)
 125                         asm ("nop;");
 126                 for (i = 0; i < 0x1000; i++)
 127                         asm ("nop;");
 128                 for (i = 0; i < 0x1000; i++)
 129                         asm ("nop;");
 130
 131                 serial_setbrg ();
 132                 ide_init ();
 133
 134                 setenv ("bootargs", "");
 135                 setenv ("bootcmd",
 136                         "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000");
 137         } else {
 138                 printf ("Booting from FLASH\n");
 139         }
 140
 141         return 1;
 142 }
 143 #endif
 144
 145 #ifdef CONFIG_STAMP_CF
 146
 147 void cf_outb (unsigned char val, volatile unsigned char *addr)
 148 {
 149         /*
 150          * Set PF1 PF0 respectively to 0 1 to divert address
 151          * to the expansion memory banks
 152          */
 153         *pFIO_FLAG_S = CF_PF0;
 154         *pFIO_FLAG_C = CF_PF1;
 155         asm ("ssync;");
 156
 157         *(addr) = val;
 158         asm ("ssync;");
 159
 160         /* Setback PF1 PF0 to 0 0 to address external
 161          * memory banks  */
 162         *(volatile unsigned short *) pFIO_FLAG_C = CF_PF1_PF0;
 163         asm ("ssync;");
 164 }
 165
 166 unsigned char cf_inb (volatile unsigned char *addr)
 167 {
 168         volatile unsigned char c;
 169
 170         *pFIO_FLAG_S = CF_PF0;
 171         *pFIO_FLAG_C = CF_PF1;
 172         asm ("ssync;");
 173
 174         c = *(addr);
 175         asm ("ssync;");
 176
 177         *pFIO_FLAG_C = CF_PF1_PF0;
 178         asm ("ssync;");
 179
 180         return c;
 181 }
 182
 183 void cf_insw (unsigned short *sect_buf, unsigned short *addr, int words)
 184 {
 185         int i;
 186
 187         *pFIO_FLAG_S = CF_PF0;
 188         *pFIO_FLAG_C = CF_PF1;
 189         asm ("ssync;");
 190
 191         for (i = 0; i < words; i++) {
 192                 *(sect_buf + i) = *(addr);
 193                 asm ("ssync;");
 194         }
 195
 196         *pFIO_FLAG_C = CF_PF1_PF0;
 197         asm ("ssync;");
 198 }
 199
 200 void cf_outsw (unsigned short *addr, unsigned short *sect_buf, int words)
 201 {
 202         int i;
 203
 204         *pFIO_FLAG_S = CF_PF0;
 205         *pFIO_FLAG_C = CF_PF1;
 206         asm ("ssync;");
 207
 208         for (i = 0; i < words; i++) {
 209                 *(addr) = *(sect_buf + i);
 210                 asm ("ssync;");
 211         }
 212
 213         *pFIO_FLAG_C = CF_PF1_PF0;
 214         asm ("ssync;");
 215 }
 216 #endif
 217
 218 void stamp_led_set (int LED1, int LED2, int LED3)
 219 {
 220         *pFIO_INEN &= ~(PF2 | PF3 | PF4);
 221         *pFIO_DIR |= (PF2 | PF3 | PF4);
 222
 223         if (LED1 == STATUS_LED_OFF)
 224                 *pFIO_FLAG_S = PF2;
 225         else
 226                 *pFIO_FLAG_C = PF2;
 227         if (LED2 == STATUS_LED_OFF)
 228                 *pFIO_FLAG_S = PF3;
 229         else
 230                 *pFIO_FLAG_C = PF3;
 231         if (LED3 == STATUS_LED_OFF)
 232                 *pFIO_FLAG_S = PF4;
 233         else
 234                 *pFIO_FLAG_C = PF4;
 235         asm ("ssync;");
 236 }
 237
 238 void show_boot_progress (int status)
 239 {
 240         switch (status) {
 241         case 1:
 242                 stamp_led_set (STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON);
 243                 break;
 244         case 2:
 245                 stamp_led_set (STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF);
 246                 break;
 247         case 3:
 248                 stamp_led_set (STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON);
 249                 break;
 250         case 4:
 251                 stamp_led_set (STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF);
 252                 break;
 253         case 5:
 254         case 6:
 255                 stamp_led_set (STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON);
 256                 break;
 257         case 7:
 258         case 8:
 259                 stamp_led_set (STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF);
 260                 break;
 261         case 9:
 262         case 10:
 263         case 11:
 264         case 12:
 265         case 13:
 266         case 14:
 267         case 15:
 268                 stamp_led_set (STATUS_LED_OFF, STATUS_LED_OFF,
 269                                STATUS_LED_OFF);
 270                 break;
 271         default:
 272                 stamp_led_set (STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON);
 273                 break;
 274         }
 275 }