board/cm-bf537u/flash.c

   1 /*
   2  * flash.c - helper commands for working with GPIO-assisted flash
   3  *
   4  * Copyright (c) 2005-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <common.h>
  10 #include <command.h>
  11 #include <asm/blackfin.h>
  12 #include "gpio_cfi_flash.h"
  13
  14 int do_ph(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  15 {
  16         ulong faddr = CONFIG_SYS_FLASH_BASE;
  17         ushort data;
  18         ulong dflg;
  19
  20         if (argc > 1) {
  21                 dflg = simple_strtoul(argv[1], NULL, 16);
  22                 faddr |= (dflg << 21);
  23                 gpio_cfi_flash_swizzle((void *)faddr);
  24         } else {
  25                 data = bfin_read_PORTHIO();
  26                 printf("Port H data %04x (PH0:%i)\n", data, !!(data & PH0));
  27         }
  28
  29         return 0;
  30 }
  31
  32 U_BOOT_CMD(ph, 3, 0, do_ph,
  33         "set/clear PH0 GPIO flash bank switch\n",
  34         "<ph0> - set PH0 GPIO pin state\n");