board/tcm-bf537/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_pf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  15 {
  16         ulong faddr = CONFIG_SYS_FLASH_BASE;
  17         ushort data;
  18         ulong dflg;
  19
  20         if (argc == 3) {
  21                 dflg = simple_strtoul(argv[1], NULL, 16);
  22                 faddr |= (dflg << 21);
  23                 dflg = simple_strtoul(argv[2], NULL, 16);
  24                 faddr |= (dflg << 22);
  25                 gpio_cfi_flash_swizzle((void *)faddr);
  26         } else {
  27                 data = bfin_read_PORTFIO();
  28                 printf("Port F data %04x (PF4:%i PF5:%i)\n", data,
  29                         !!(data & PF4), !!(data & PF5));
  30         }
  31
  32         return 0;
  33 }
  34
  35 U_BOOT_CMD(pf, 3, 0, do_pf,
  36         "set/clear PF4/PF5 GPIO flash bank switch\n",
  37         "<pf4> <pf5> - set PF4/PF5 GPIO pin state\n");