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