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 } 45