1 /* 2 * Copyright 2008 Extreme Engineering Solutions, Inc. 3 * Copyright 2004, 2007 Freescale Semiconductor, Inc. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <command.h> 10 #include <pci.h> 11 #include <asm/processor.h> 12 #include <asm/immap_85xx.h> 13 #include <asm/fsl_pci.h> 14 #include <asm/io.h> 15 #include <asm/cache.h> 16 #include <asm/mmu.h> 17 #include <linux/libfdt.h> 18 #include <fdt_support.h> 19 #include <pca953x.h> 20 21 extern void ft_board_pci_setup(void *blob, bd_t *bd); 22 23 static void flash_cs_fixup(void) 24 { 25 int flash_sel; 26 27 /* 28 * Print boot dev and swap flash flash chip selects if booted from 2nd 29 * flash. Swapping chip selects presents user with a common memory 30 * map regardless of which flash was booted from. 31 */ 32 flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) & 33 CONFIG_SYS_PCA953X_FLASH_PASS_CS)); 34 printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1); 35 36 if (flash_sel) { 37 set_lbc_br(0, CONFIG_SYS_BR1_PRELIM); 38 set_lbc_or(0, CONFIG_SYS_OR1_PRELIM); 39 40 set_lbc_br(1, CONFIG_SYS_BR0_PRELIM); 41 set_lbc_or(1, CONFIG_SYS_OR0_PRELIM); 42 } 43 } 44 45 int board_early_init_r(void) 46 { 47 /* Initialize PCA9557 devices */ 48 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0); 49 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0); 50 51 /* 52 * Remap NOR flash region to caching-inhibited 53 * so that flash can be erased/programmed properly. 54 */ 55 56 /* Flush d-cache and invalidate i-cache of any FLASH data */ 57 flush_dcache(); 58 invalidate_icache(); 59 60 /* Invalidate existing TLB entry for NOR flash */ 61 disable_tlb(0); 62 set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 63 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 64 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 65 0, 0, BOOKE_PAGESZ_256M, 1); 66 67 flash_cs_fixup(); 68 69 return 0; 70 } 71 72 #if defined(CONFIG_OF_BOARD_SETUP) 73 int ft_board_setup(void *blob, bd_t *bd) 74 { 75 #ifdef CONFIG_PCI 76 ft_board_pci_setup(blob, bd); 77 #endif 78 ft_cpu_setup(blob, bd); 79 80 return 0; 81 } 82 #endif 83