board/amcc/yucca/cmd_yucca.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
   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  * hacked for evb440spe
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include "yucca.h"
  29 #include <i2c.h>
  30 #include <asm/byteorder.h>
  31
  32 extern void print_evb440spe_info(void);
  33 static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag,
  34                 int flag, int argc, char *argv[]);
  35
  36 /* ------------------------------------------------------------------------- */
  37 int do_evb440spe(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  38 {
  39         return setBootStrapClock (cmdtp, 1, flag, argc, argv);
  40 }
  41
  42 /* ------------------------------------------------------------------------- */
  43 /* Modify memory.
  44  *
  45  * Syntax:
  46  *      evb440spe wrclk prom0,prom1
  47  */
  48 static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag, int flag,
  49                 int argc, char *argv[])
  50 {
  51         uchar   chip;
  52         ulong   data;
  53         int     nbytes;
  54         extern char console_buffer[];
  55
  56         char sysClock[4];
  57         char cpuClock[4];
  58         char plbClock[4];
  59         char pcixClock[4];
  60
  61         if (argc < 3) {
  62                 cmd_usage(cmdtp);
  63                 return 1;
  64         }
  65
  66         if (strcmp(argv[2], "prom0") == 0)
  67                 chip = IIC0_BOOTPROM_ADDR;
  68         else
  69                 chip = IIC0_ALT_BOOTPROM_ADDR;
  70
  71         do {
  72                 printf("enter sys clock frequency 33 or 66 MHz or quit to abort\n");
  73                 nbytes = readline (" ? ");
  74
  75                 if (strcmp(console_buffer, "quit") == 0)
  76                         return 0;
  77
  78                 if ((strcmp(console_buffer, "33") != 0) &
  79                                 (strcmp(console_buffer, "66") != 0))
  80                         nbytes=0;
  81
  82                 strcpy(sysClock, console_buffer);
  83
  84         } while (nbytes == 0);
  85
  86         do {
  87                 if (strcmp(sysClock, "66") == 0) {
  88                         printf("enter cpu clock frequency 400, 533 MHz or quit to abort\n");
  89                 } else {
  90 #ifdef  CONFIG_STRESS
  91                         printf("enter cpu clock frequency 400, 500, 533, 667 MHz or quit to abort\n");
  92 #else
  93                         printf("enter cpu clock frequency 400, 500, 533 MHz or quit to abort\n");
  94 #endif
  95                 }
  96                 nbytes = readline (" ? ");
  97
  98                 if (strcmp(console_buffer, "quit") == 0)
  99                         return 0;
 100
 101                 if (strcmp(sysClock, "66") == 0) {
 102                         if ((strcmp(console_buffer, "400") != 0) &
 103                                         (strcmp(console_buffer, "533") != 0)
 104 #ifdef  CONFIG_STRESS
 105                                         & (strcmp(console_buffer, "667") != 0)
 106 #endif
 107                            ) {
 108                                 nbytes = 0;
 109                         }
 110                 } else {
 111                         if ((strcmp(console_buffer, "400") != 0) &
 112                                         (strcmp(console_buffer, "500") != 0) &
 113                                         (strcmp(console_buffer, "533") != 0)
 114 #ifdef  CONFIG_STRESS
 115                                         & (strcmp(console_buffer, "667") != 0)
 116 #endif
 117                            ) {
 118                                 nbytes = 0;
 119                         }
 120                 }
 121
 122                 strcpy(cpuClock, console_buffer);
 123
 124         } while (nbytes == 0);
 125
 126         if (strcmp(cpuClock, "500") == 0){
 127                 strcpy(plbClock, "166");
 128         } else if (strcmp(cpuClock, "533") == 0){
 129                 strcpy(plbClock, "133");
 130         } else {
 131                 do {
 132                         if (strcmp(cpuClock, "400") == 0)
 133                                 printf("enter plb clock frequency 100, 133 MHz or quit to abort\n");
 134
 135 #ifdef  CONFIG_STRESS
 136                         if (strcmp(cpuClock, "667") == 0)
 137                                 printf("enter plb clock frequency 133, 166 MHz or quit to abort\n");
 138
 139 #endif
 140                         nbytes = readline (" ? ");
 141
 142                         if (strcmp(console_buffer, "quit") == 0)
 143                                 return 0;
 144
 145                         if (strcmp(cpuClock, "400") == 0) {
 146                                 if ((strcmp(console_buffer, "100") != 0) &
 147                                                 (strcmp(console_buffer, "133") != 0))
 148                                         nbytes = 0;
 149                         }
 150 #ifdef  CONFIG_STRESS
 151                         if (strcmp(cpuClock, "667") == 0) {
 152                                 if ((strcmp(console_buffer, "133") != 0) &
 153                                                 (strcmp(console_buffer, "166") != 0))
 154                                         nbytes = 0;
 155                         }
 156 #endif
 157                         strcpy(plbClock, console_buffer);
 158
 159                 } while (nbytes == 0);
 160         }
 161
 162         do {
 163                 printf("enter Pci-X clock frequency 33, 66, 100 or 133 MHz or quit to abort\n");
 164                 nbytes = readline (" ? ");
 165
 166                 if (strcmp(console_buffer, "quit") == 0)
 167                         return 0;
 168
 169                 if ((strcmp(console_buffer, "33") != 0) &
 170                                 (strcmp(console_buffer, "66") != 0) &
 171                                 (strcmp(console_buffer, "100") != 0) &
 172                                 (strcmp(console_buffer, "133") != 0)) {
 173                         nbytes = 0;
 174                 }
 175                 strcpy(pcixClock, console_buffer);
 176
 177         } while (nbytes == 0);
 178
 179         printf("\nsys clk   = %s MHz\n", sysClock);
 180         printf("cpu clk   = %s MHz\n", cpuClock);
 181         printf("plb clk   = %s MHz\n", plbClock);
 182         printf("Pci-X clk = %s MHz\n", pcixClock);
 183
 184         do {
 185                 printf("\npress [y] to write I2C bootstrap \n");
 186                 printf("or [n] to abort.  \n");
 187                 printf("Don't forget to set board switches \n");
 188                 printf("according to your choice before re-starting \n");
 189                 printf("(refer to 440spe_uboot_kit_um_1_01.pdf) \n");
 190
 191                 nbytes = readline (" ? ");
 192                 if (strcmp(console_buffer, "n") == 0)
 193                         return 0;
 194
 195         } while (nbytes == 0);
 196
 197         if (strcmp(sysClock, "33") == 0) {
 198                 if ((strcmp(cpuClock, "400") == 0) &
 199                                 (strcmp(plbClock, "100") == 0))
 200                         data = 0x8678c206;
 201
 202                 if ((strcmp(cpuClock, "400") == 0) &
 203                                 (strcmp(plbClock, "133") == 0))
 204                         data = 0x8678c2c6;
 205
 206                 if ((strcmp(cpuClock, "500") == 0))
 207                         data = 0x8778f2c6;
 208
 209                 if ((strcmp(cpuClock, "533") == 0))
 210                         data = 0x87790252;
 211
 212 #ifdef  CONFIG_STRESS
 213                 if ((strcmp(cpuClock, "667") == 0) &
 214                                 (strcmp(plbClock, "133") == 0))
 215                         data = 0x87794256;
 216
 217                 if ((strcmp(cpuClock, "667") == 0) &
 218                                 (strcmp(plbClock, "166") == 0))
 219                         data = 0x87794206;
 220
 221 #endif
 222         }
 223         if (strcmp(sysClock, "66") == 0) {
 224                 if ((strcmp(cpuClock, "400") == 0) &
 225                                 (strcmp(plbClock, "100") == 0))
 226                         data = 0x84706206;
 227
 228                 if ((strcmp(cpuClock, "400") == 0) &
 229                                 (strcmp(plbClock, "133") == 0))
 230                         data = 0x847062c6;
 231
 232                 if ((strcmp(cpuClock, "533") == 0))
 233                         data = 0x85708206;
 234
 235 #ifdef  CONFIG_STRESS
 236                 if ((strcmp(cpuClock, "667") == 0) &
 237                                 (strcmp(plbClock, "133") == 0))
 238                         data = 0x8570a256;
 239
 240                 if ((strcmp(cpuClock, "667") == 0) &
 241                                 (strcmp(plbClock, "166") == 0))
 242                         data = 0x8570a206;
 243
 244 #endif
 245         }
 246
 247 #ifdef  DEBUG
 248         printf(" pin strap0 to write in i2c  = %x\n", data);
 249 #endif  /* DEBUG */
 250
 251         if (i2c_write(chip, 0, 1, (uchar *)&data, 4) != 0)
 252                 printf("Error writing strap0 in %s\n", argv[2]);
 253
 254         if (strcmp(pcixClock, "33") == 0)
 255                 data = 0x00000701;
 256
 257         if (strcmp(pcixClock, "66") == 0)
 258                 data = 0x00000601;
 259
 260         if (strcmp(pcixClock, "100") == 0)
 261                 data = 0x00000501;
 262
 263         if (strcmp(pcixClock, "133") == 0)
 264                 data = 0x00000401;
 265
 266         if (strcmp(plbClock, "166") == 0)
 267                 data = data | 0x05950000;
 268         else
 269                 data = data | 0x05A50000;
 270
 271 #ifdef  DEBUG
 272         printf(" pin strap1 to write in i2c  = %x\n", data);
 273 #endif  /* DEBUG */
 274
 275         udelay(1000);
 276         if (i2c_write(chip, 4, 1, (uchar *)&data, 4) != 0)
 277                 printf("Error writing strap1 in %s\n", argv[2]);
 278
 279         return 0;
 280 }
 281
 282 U_BOOT_CMD(
 283         evb440spe,      3,      1,      do_evb440spe,
 284         "evb440spe - program the serial device strap\n",
 285         "wrclk [prom0|prom1] - program the serial device strap\n"
 286 );