1 /* 2 * Copyright 2008 Extreme Engineering Solutions, Inc. 3 * Copyright 2004, 2007 Freescale Semiconductor, Inc. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #include <command.h> 26 #include <pci.h> 27 #include <asm/processor.h> 28 #include <asm/immap_85xx.h> 29 #include <asm/fsl_pci.h> 30 #include <asm/io.h> 31 #include <asm/cache.h> 32 #include <asm/mmu.h> 33 #include <libfdt.h> 34 #include <fdt_support.h> 35 #include <pca953x.h> 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_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 67 /* 68 * Remap NOR flash region to caching-inhibited 69 * so that flash can be erased/programmed properly. 70 */ 71 72 /* Flush d-cache and invalidate i-cache of any FLASH data */ 73 flush_dcache(); 74 invalidate_icache(); 75 76 /* Invalidate existing TLB entry for NOR flash */ 77 disable_tlb(0); 78 set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 79 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 80 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 81 0, 0, BOOKE_PAGESZ_256M, 1); 82 83 flash_cs_fixup(); 84 85 return 0; 86 } 87 88 #if defined(CONFIG_OF_BOARD_SETUP) 89 void ft_board_setup(void *blob, bd_t *bd) 90 { 91 #ifdef CONFIG_PCI 92 ft_board_pci_setup(blob, bd); 93 #endif 94 ft_cpu_setup(blob, bd); 95 } 96 #endif 97