board/xes/common/fsl_8xxx_misc.c

   1 /*
   2  * Copyright 2008 Extreme Engineering Solutions, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/mmu.h>
   9 #ifdef CONFIG_PCA953X
  10 #include <pca953x.h>
  11
  12 /*
  13  * Determine if a board's flashes are write protected
  14  */
  15 int board_flash_wp_on(void)
  16 {
  17         if (pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
  18                         CONFIG_SYS_PCA953X_NVM_WP)
  19                 return 1;
  20
  21         return 0;
  22 }
  23 #endif
  24
  25 /*
  26  * Return a board's derivative model number.  For example:
  27  * return 2 for the XPedite5372 and return 1 for the XPedite5201.
  28  */
  29 uint get_board_derivative(void)
  30 {
  31 #if defined(CONFIG_MPC85xx)
  32        volatile ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  33 #elif defined(CONFIG_MPC86xx)
  34        volatile immap_t *immap = (immap_t *)CONFIG_SYS_CCSRBAR;
  35        volatile ccsr_gur_t *gur = &immap->im_gur;
  36 #endif
  37
  38        /*
  39         * The top 4 lines of the local bus address are pulled low/high and
  40         * can be read to determine the least significant digit of a board's
  41         * model number.
  42         */
  43        return gur->gpporcr >> 28;
  44 }