1 /* 2 * Copyright 2008 Extreme Engineering Solutions, Inc. 3 * 4 * See file CREDITS for list of people who contributed to this 5 * project. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 #include <common.h> 24 #include <command.h> 25 #include <asm/processor.h> 26 #include <asm/mmu.h> 27 #include <asm/immap_85xx.h> 28 #include <asm/fsl_pci.h> 29 #include <asm/io.h> 30 #include <asm/cache.h> 31 #include <libfdt.h> 32 #include <fdt_support.h> 33 #include <pca953x.h> 34 35 DECLARE_GLOBAL_DATA_PTR; 36 37 extern void ft_board_pci_setup(void *blob, bd_t *bd); 38 39 static void flash_cs_fixup(void) 40 { 41 int flash_sel; 42 43 /* 44 * Print boot dev and swap flash flash chip selects if booted from 2nd 45 * flash. Swapping chip selects presents user with a common memory 46 * map regardless of which flash was booted from. 47 */ 48 flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) & 49 CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS)); 50 printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1); 51 52 if (flash_sel) { 53 set_lbc_br(0, CONFIG_SYS_BR1_PRELIM); 54 set_lbc_or(0, CONFIG_SYS_OR1_PRELIM); 55 56 set_lbc_br(1, CONFIG_SYS_BR0_PRELIM); 57 set_lbc_or(1, CONFIG_SYS_OR0_PRELIM); 58 } 59 } 60 61 int board_early_init_r(void) 62 { 63 /* Initialize PCA9557 devices */ 64 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0); 65 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0); 66 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0); 67 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0); 68 69 /* 70 * Remap NOR flash region to caching-inhibited 71 * so that flash can be erased/programmed properly. 72 */ 73 74 /* Flush d-cache and invalidate i-cache of any FLASH data */ 75 flush_dcache(); 76 invalidate_icache(); 77 78 /* Invalidate existing TLB entry for NOR flash */ 79 disable_tlb(0); 80 set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 81 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 82 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 83 0, 0, BOOKE_PAGESZ_256M, 1); 84 85 flash_cs_fixup(); 86 87 return 0; 88 } 89 90 #if defined(CONFIG_OF_BOARD_SETUP) 91 void ft_board_setup(void *blob, bd_t *bd) 92 { 93 #ifdef CONFIG_PCI 94 ft_board_pci_setup(blob, bd); 95 #endif 96 ft_cpu_setup(blob, bd); 97 } 98 #endif 99