1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2008 Extreme Engineering Solutions, Inc. 4 */ 5 6 #include <common.h> 7 #include <command.h> 8 #include <asm/processor.h> 9 #include <asm/mmu.h> 10 #include <asm/immap_85xx.h> 11 #include <asm/fsl_pci.h> 12 #include <asm/io.h> 13 #include <asm/cache.h> 14 #include <linux/libfdt.h> 15 #include <fdt_support.h> 16 #include <pca953x.h> 17 18 extern void ft_board_pci_setup(void *blob, bd_t *bd); 19 20 static void flash_cs_fixup(void) 21 { 22 int flash_sel; 23 24 /* 25 * Print boot dev and swap flash flash chip selects if booted from 2nd 26 * flash. Swapping chip selects presents user with a common memory 27 * map regardless of which flash was booted from. 28 */ 29 flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) & 30 CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS)); 31 printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1); 32 33 if (flash_sel) { 34 set_lbc_br(0, CONFIG_SYS_BR1_PRELIM); 35 set_lbc_or(0, CONFIG_SYS_OR1_PRELIM); 36 37 set_lbc_br(1, CONFIG_SYS_BR0_PRELIM); 38 set_lbc_or(1, CONFIG_SYS_OR0_PRELIM); 39 } 40 } 41 42 int board_early_init_r(void) 43 { 44 /* Initialize PCA9557 devices */ 45 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0); 46 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0); 47 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0); 48 pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0); 49 50 /* 51 * Remap NOR flash region to caching-inhibited 52 * so that flash can be erased/programmed properly. 53 */ 54 55 /* Flush d-cache and invalidate i-cache of any FLASH data */ 56 flush_dcache(); 57 invalidate_icache(); 58 59 /* Invalidate existing TLB entry for NOR flash */ 60 disable_tlb(0); 61 set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 62 (CONFIG_SYS_FLASH_BASE2 & 0xf0000000), 63 MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, 64 0, 0, BOOKE_PAGESZ_256M, 1); 65 66 flash_cs_fixup(); 67 68 return 0; 69 } 70 71 #if defined(CONFIG_OF_BOARD_SETUP) 72 int ft_board_setup(void *blob, bd_t *bd) 73 { 74 #ifdef CONFIG_PCI 75 ft_board_pci_setup(blob, bd); 76 #endif 77 ft_cpu_setup(blob, bd); 78 79 return 0; 80 } 81 #endif 82