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