board/amcc/yucca/cmd_yucca.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  * hacked for evb440spe
   8  */
   9
  10 #include <common.h>
  11 #include <cli.h>
  12 #include <command.h>
  13 #include "yucca.h"
  14 #include <i2c.h>
  15 #include <asm/byteorder.h>
  16
  17 extern void print_evb440spe_info(void);
  18 static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag,
  19                 int flag, int argc, char * const argv[]);
  20
  21 /* ------------------------------------------------------------------------- */
  22 int do_evb440spe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  23 {
  24         return setBootStrapClock (cmdtp, 1, flag, argc, argv);
  25 }
  26
  27 /* ------------------------------------------------------------------------- */
  28 /* Modify memory.
  29  *
  30  * Syntax:
  31  *      evb440spe wrclk prom0,prom1
  32  */
  33 static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag, int flag,
  34                 int argc, char * const argv[])
  35 {
  36         uchar   chip;
  37         ulong   data;
  38         int     nbytes;
  39
  40         char sysClock[4];
  41         char cpuClock[4];
  42         char plbClock[4];
  43         char pcixClock[4];
  44
  45         if (argc < 3)
  46                 return cmd_usage(cmdtp);
  47
  48         if (strcmp(argv[2], "prom0") == 0)
  49                 chip = IIC0_BOOTPROM_ADDR;
  50         else
  51                 chip = IIC0_ALT_BOOTPROM_ADDR;
  52
  53         do {
  54                 printf("enter sys clock frequency 33 or 66 MHz or quit to abort\n");
  55                 nbytes = cli_readline(" ? ");
  56
  57                 if (strcmp(console_buffer, "quit") == 0)
  58                         return 0;
  59
  60                 if ((strcmp(console_buffer, "33") != 0) &
  61                                 (strcmp(console_buffer, "66") != 0))
  62                         nbytes=0;
  63
  64                 strcpy(sysClock, console_buffer);
  65
  66         } while (nbytes == 0);
  67
  68         do {
  69                 if (strcmp(sysClock, "66") == 0) {
  70                         printf("enter cpu clock frequency 400, 533 MHz or quit to abort\n");
  71                 } else {
  72 #ifdef  CONFIG_STRESS
  73                         printf("enter cpu clock frequency 400, 500, 533, 667 MHz or quit to abort\n");
  74 #else
  75                         printf("enter cpu clock frequency 400, 500, 533 MHz or quit to abort\n");
  76 #endif
  77                 }
  78                 nbytes = cli_readline(" ? ");
  79
  80                 if (strcmp(console_buffer, "quit") == 0)
  81                         return 0;
  82
  83                 if (strcmp(sysClock, "66") == 0) {
  84                         if ((strcmp(console_buffer, "400") != 0) &
  85                                         (strcmp(console_buffer, "533") != 0)
  86 #ifdef  CONFIG_STRESS
  87                                         & (strcmp(console_buffer, "667") != 0)
  88 #endif
  89                            ) {
  90                                 nbytes = 0;
  91                         }
  92                 } else {
  93                         if ((strcmp(console_buffer, "400") != 0) &
  94                                         (strcmp(console_buffer, "500") != 0) &
  95                                         (strcmp(console_buffer, "533") != 0)
  96 #ifdef  CONFIG_STRESS
  97                                         & (strcmp(console_buffer, "667") != 0)
  98 #endif
  99                            ) {
 100                                 nbytes = 0;
 101                         }
 102                 }
 103
 104                 strcpy(cpuClock, console_buffer);
 105
 106         } while (nbytes == 0);
 107
 108         if (strcmp(cpuClock, "500") == 0){
 109                 strcpy(plbClock, "166");
 110         } else if (strcmp(cpuClock, "533") == 0){
 111                 strcpy(plbClock, "133");
 112         } else {
 113                 do {
 114                         if (strcmp(cpuClock, "400") == 0)
 115                                 printf("enter plb clock frequency 100, 133 MHz or quit to abort\n");
 116
 117 #ifdef  CONFIG_STRESS
 118                         if (strcmp(cpuClock, "667") == 0)
 119                                 printf("enter plb clock frequency 133, 166 MHz or quit to abort\n");
 120
 121 #endif
 122                         nbytes = cli_readline(" ? ");
 123
 124                         if (strcmp(console_buffer, "quit") == 0)
 125                                 return 0;
 126
 127                         if (strcmp(cpuClock, "400") == 0) {
 128                                 if ((strcmp(console_buffer, "100") != 0) &
 129                                                 (strcmp(console_buffer, "133") != 0))
 130                                         nbytes = 0;
 131                         }
 132 #ifdef  CONFIG_STRESS
 133                         if (strcmp(cpuClock, "667") == 0) {
 134                                 if ((strcmp(console_buffer, "133") != 0) &
 135                                                 (strcmp(console_buffer, "166") != 0))
 136                                         nbytes = 0;
 137                         }
 138 #endif
 139                         strcpy(plbClock, console_buffer);
 140
 141                 } while (nbytes == 0);
 142         }
 143
 144         do {
 145                 printf("enter Pci-X clock frequency 33, 66, 100 or 133 MHz or quit to abort\n");
 146                 nbytes = cli_readline(" ? ");
 147
 148                 if (strcmp(console_buffer, "quit") == 0)
 149                         return 0;
 150
 151                 if ((strcmp(console_buffer, "33") != 0) &
 152                                 (strcmp(console_buffer, "66") != 0) &
 153                                 (strcmp(console_buffer, "100") != 0) &
 154                                 (strcmp(console_buffer, "133") != 0)) {
 155                         nbytes = 0;
 156                 }
 157                 strcpy(pcixClock, console_buffer);
 158
 159         } while (nbytes == 0);
 160
 161         printf("\nsys clk   = %s MHz\n", sysClock);
 162         printf("cpu clk   = %s MHz\n", cpuClock);
 163         printf("plb clk   = %s MHz\n", plbClock);
 164         printf("Pci-X clk = %s MHz\n", pcixClock);
 165
 166         do {
 167                 printf("\npress [y] to write I2C bootstrap\n");
 168                 printf("or [n] to abort.\n");
 169                 printf("Don't forget to set board switches\n");
 170                 printf("according to your choice before re-starting\n");
 171                 printf("(refer to 440spe_uboot_kit_um_1_01.pdf)\n");
 172
 173                 nbytes = cli_readline(" ? ");
 174                 if (strcmp(console_buffer, "n") == 0)
 175                         return 0;
 176
 177         } while (nbytes == 0);
 178
 179         if (strcmp(sysClock, "33") == 0) {
 180                 if ((strcmp(cpuClock, "400") == 0) &
 181                                 (strcmp(plbClock, "100") == 0))
 182                         data = 0x8678c206;
 183
 184                 if ((strcmp(cpuClock, "400") == 0) &
 185                                 (strcmp(plbClock, "133") == 0))
 186                         data = 0x8678c2c6;
 187
 188                 if ((strcmp(cpuClock, "500") == 0))
 189                         data = 0x8778f2c6;
 190
 191                 if ((strcmp(cpuClock, "533") == 0))
 192                         data = 0x87790252;
 193
 194 #ifdef  CONFIG_STRESS
 195                 if ((strcmp(cpuClock, "667") == 0) &
 196                                 (strcmp(plbClock, "133") == 0))
 197                         data = 0x87794256;
 198
 199                 if ((strcmp(cpuClock, "667") == 0) &
 200                                 (strcmp(plbClock, "166") == 0))
 201                         data = 0x87794206;
 202
 203 #endif
 204         }
 205         if (strcmp(sysClock, "66") == 0) {
 206                 if ((strcmp(cpuClock, "400") == 0) &
 207                                 (strcmp(plbClock, "100") == 0))
 208                         data = 0x84706206;
 209
 210                 if ((strcmp(cpuClock, "400") == 0) &
 211                                 (strcmp(plbClock, "133") == 0))
 212                         data = 0x847062c6;
 213
 214                 if ((strcmp(cpuClock, "533") == 0))
 215                         data = 0x85708206;
 216
 217 #ifdef  CONFIG_STRESS
 218                 if ((strcmp(cpuClock, "667") == 0) &
 219                                 (strcmp(plbClock, "133") == 0))
 220                         data = 0x8570a256;
 221
 222                 if ((strcmp(cpuClock, "667") == 0) &
 223                                 (strcmp(plbClock, "166") == 0))
 224                         data = 0x8570a206;
 225
 226 #endif
 227         }
 228
 229 #ifdef  DEBUG
 230         printf(" pin strap0 to write in i2c  = %x\n", data);
 231 #endif  /* DEBUG */
 232
 233         if (i2c_write(chip, 0, 1, (uchar *)&data, 4) != 0)
 234                 printf("Error writing strap0 in %s\n", argv[2]);
 235
 236         if (strcmp(pcixClock, "33") == 0)
 237                 data = 0x00000701;
 238
 239         if (strcmp(pcixClock, "66") == 0)
 240                 data = 0x00000601;
 241
 242         if (strcmp(pcixClock, "100") == 0)
 243                 data = 0x00000501;
 244
 245         if (strcmp(pcixClock, "133") == 0)
 246                 data = 0x00000401;
 247
 248         if (strcmp(plbClock, "166") == 0)
 249                 data = data | 0x05950000;
 250         else
 251                 data = data | 0x05A50000;
 252
 253 #ifdef  DEBUG
 254         printf(" pin strap1 to write in i2c  = %x\n", data);
 255 #endif  /* DEBUG */
 256
 257         udelay(1000);
 258         if (i2c_write(chip, 4, 1, (uchar *)&data, 4) != 0)
 259                 printf("Error writing strap1 in %s\n", argv[2]);
 260
 261         return 0;
 262 }
 263
 264 U_BOOT_CMD(
 265         evb440spe,      3,      1,      do_evb440spe,
 266         "program the serial device strap",
 267         "wrclk [prom0|prom1] - program the serial device strap"
 268 );