board/amcc/katmai/cmd_katmai.c

   1 /*
   2  * (C) Copyright 2007
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   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
  25 #include <common.h>
  26 #include <command.h>
  27 #include <i2c.h>
  28 #include <asm/byteorder.h>
  29
  30 #define CONFIG_STRESS           /* enable 667 MHz CPU freq selection */
  31 #define DEBUG
  32
  33 static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  34 {
  35         uchar   chip;
  36         ulong   data;
  37         int     nbytes;
  38         extern char console_buffer[];
  39
  40         char sysClock[4];
  41         char cpuClock[4];
  42         char plbClock[4];
  43         char pcixClock[4];
  44
  45         if (argc < 3) {
  46                 cmd_usage(cmdtp);
  47                 return 1;
  48         }
  49
  50         if (strcmp(argv[2], "prom0") == 0)
  51                 chip = IIC0_BOOTPROM_ADDR;
  52         else
  53                 chip = IIC0_ALT_BOOTPROM_ADDR;
  54
  55         /* on Katmai SysClk is always 33MHz */
  56         strcpy(sysClock, "33");
  57
  58         do {
  59 #ifdef  CONFIG_STRESS
  60                 printf("enter cpu clock frequency 400, 500, 533, 667 MHz or quit to abort\n");
  61 #else
  62                 printf("enter cpu clock frequency 400, 500, 533 MHz or quit to abort\n");
  63 #endif
  64                 nbytes = readline (" ? ");
  65
  66                 if (strcmp(console_buffer, "quit") == 0)
  67                         return 0;
  68
  69                 if ((strcmp(console_buffer, "400") != 0) &&
  70                     (strcmp(console_buffer, "500") != 0) &&
  71                     (strcmp(console_buffer, "533") != 0)
  72 #ifdef  CONFIG_STRESS
  73                     && (strcmp(console_buffer, "667") != 0)
  74 #endif
  75                         ) {
  76                         nbytes = 0;
  77                 }
  78
  79                 strcpy(cpuClock, console_buffer);
  80
  81         } while (nbytes == 0);
  82
  83         if (strcmp(cpuClock, "500") == 0)
  84                 strcpy(plbClock, "166");
  85         else if (strcmp(cpuClock, "533") == 0)
  86                 strcpy(plbClock, "133");
  87         else {
  88                 do {
  89                         if (strcmp(cpuClock, "400") == 0)
  90                                 printf("enter plb clock frequency 100, 133 MHz or quit to abort\n");
  91
  92 #ifdef  CONFIG_STRESS
  93                         if (strcmp(cpuClock, "667") == 0)
  94                                 printf("enter plb clock frequency 133, 166 MHz or quit to abort\n");
  95
  96 #endif
  97                         nbytes = readline (" ? ");
  98
  99                         if (strcmp(console_buffer, "quit") == 0)
 100                                 return 0;
 101
 102                         if (strcmp(cpuClock, "400") == 0) {
 103                                 if ((strcmp(console_buffer, "100") != 0) &&
 104                                     (strcmp(console_buffer, "133") != 0))
 105                                         nbytes = 0;
 106                         }
 107 #ifdef  CONFIG_STRESS
 108                         if (strcmp(cpuClock, "667") == 0) {
 109                                 if ((strcmp(console_buffer, "133") != 0) &&
 110                                     (strcmp(console_buffer, "166") != 0))
 111                                         nbytes = 0;
 112                         }
 113 #endif
 114                         strcpy(plbClock, console_buffer);
 115
 116                 } while (nbytes == 0);
 117         }
 118
 119         do {
 120                 printf("enter Pci-X clock frequency 33, 66, 100 or 133 MHz or quit to abort\n");
 121                 nbytes = readline (" ? ");
 122
 123                 if (strcmp(console_buffer, "quit") == 0)
 124                         return 0;
 125
 126                 if ((strcmp(console_buffer, "33") != 0) &&
 127                     (strcmp(console_buffer, "66") != 0) &&
 128                     (strcmp(console_buffer, "100") != 0) &&
 129                     (strcmp(console_buffer, "133") != 0)) {
 130                         nbytes = 0;
 131                 }
 132                 strcpy(pcixClock, console_buffer);
 133
 134         } while (nbytes == 0);
 135
 136         printf("\nsys clk   = %s MHz\n", sysClock);
 137         printf("cpu clk   = %s MHz\n", cpuClock);
 138         printf("plb clk   = %s MHz\n", plbClock);
 139         printf("Pci-X clk = %s MHz\n", pcixClock);
 140
 141         do {
 142                 printf("\npress [y] to write I2C bootstrap \n");
 143                 printf("or [n] to abort.  \n");
 144                 printf("Don't forget to set board switches \n");
 145                 printf("according to your choice before re-starting \n");
 146                 printf("(refer to 440spe_uboot_kit_um_1_01.pdf) \n");
 147
 148                 nbytes = readline (" ? ");
 149                 if (strcmp(console_buffer, "n") == 0)
 150                         return 0;
 151
 152         } while (nbytes == 0);
 153
 154         if (strcmp(sysClock, "33") == 0) {
 155                 if ((strcmp(cpuClock, "400") == 0) &&
 156                     (strcmp(plbClock, "100") == 0))
 157                         data = 0x8678c206;
 158
 159                 if ((strcmp(cpuClock, "400") == 0) &&
 160                     (strcmp(plbClock, "133") == 0))
 161                         data = 0x8678c2c6;
 162
 163                 if ((strcmp(cpuClock, "500") == 0))
 164                         data = 0x8778f2c6;
 165
 166                 if ((strcmp(cpuClock, "533") == 0))
 167                         data = 0x87790252;
 168 #ifdef  CONFIG_STRESS
 169                 if ((strcmp(cpuClock, "667") == 0) &&
 170                     (strcmp(plbClock, "133") == 0))
 171                         data = 0x87794256;
 172
 173                 if ((strcmp(cpuClock, "667") == 0) &&
 174                     (strcmp(plbClock, "166") == 0))
 175                         data = 0x87794206;
 176 #endif
 177         }
 178 #ifdef  DEBUG
 179         printf(" pin strap0 to write in i2c  = %lx\n", data);
 180 #endif  /* DEBUG */
 181
 182         if (i2c_write(chip, 0, 1, (uchar *)&data, 4) != 0)
 183                 printf("Error writing strap0 in %s\n", argv[2]);
 184
 185         if (strcmp(pcixClock, "33") == 0)
 186                 data = 0x000007E1;
 187
 188         if (strcmp(pcixClock, "66") == 0)
 189                 data = 0x000006E1;
 190
 191         if (strcmp(pcixClock, "100") == 0)
 192                 data = 0x000005E1;
 193
 194         if (strcmp(pcixClock, "133") == 0)
 195                 data = 0x000004E1;
 196
 197         if (strcmp(plbClock, "166") == 0)
 198 /*              data |= 0x05950000; */  /* this set's DDR2 clock == PLB clock */
 199                 data |= 0x05A50000;     /* this set's DDR2 clock == 2 * PLB clock */
 200         else
 201                 data |= 0x05A50000;
 202
 203 #ifdef  DEBUG
 204         printf(" pin strap1 to write in i2c  = %lx\n", data);
 205 #endif  /* DEBUG */
 206
 207         udelay(1000);
 208         if (i2c_write(chip, 4, 1, (uchar *)&data, 4) != 0)
 209                 printf("Error writing strap1 in %s\n", argv[2]);
 210
 211         return 0;
 212 }
 213
 214 U_BOOT_CMD(
 215         bootstrap,      3,      1,      do_bootstrap,
 216         "bootstrap - program the serial device strap\n",
 217         "wrclk [prom0|prom1] - program the serial device strap\n"
 218         );