1 /* 2 * (C) Copyright 2011 3 * Graeme Russ, <graeme.russ@gmail.com> 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 #include <common.h> 24 #include <command.h> 25 #include <stdio_dev.h> 26 #include <version.h> 27 #include <malloc.h> 28 #include <net.h> 29 #include <ide.h> 30 #include <serial.h> 31 #include <spi.h> 32 #include <status_led.h> 33 #include <asm/processor.h> 34 #include <asm/u-boot-x86.h> 35 #include <linux/compiler.h> 36 37 #include <asm/init_helpers.h> 38 39 DECLARE_GLOBAL_DATA_PTR; 40 41 /************************************************************************ 42 * Init Utilities * 43 ************************************************************************ 44 * Some of this code should be moved into the core functions, 45 * or dropped completely, 46 * but let's get it working (again) first... 47 */ 48 49 int display_banner(void) 50 { 51 printf("\n\n%s\n\n", version_string); 52 53 return 0; 54 } 55 56 int display_dram_config(void) 57 { 58 int i; 59 60 puts("DRAM Configuration:\n"); 61 62 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 63 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 64 print_size(gd->bd->bi_dram[i].size, "\n"); 65 } 66 67 return 0; 68 } 69 70 int init_baudrate_f(void) 71 { 72 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 73 return 0; 74 } 75 76 __weak int calculate_relocation_address(void) 77 { 78 ulong text_start = (ulong)&__text_start; 79 ulong bss_end = (ulong)&__bss_end; 80 ulong dest_addr; 81 82 /* 83 * NOTE: All destination address are rounded down to 16-byte 84 * boundary to satisfy various worst-case alignment 85 * requirements 86 */ 87 88 /* Stack is at top of available memory */ 89 dest_addr = gd->ram_size; 90 91 /* U-Boot is at the top */ 92 dest_addr -= (bss_end - text_start); 93 dest_addr &= ~15; 94 gd->relocaddr = dest_addr; 95 gd->reloc_off = (dest_addr - text_start); 96 97 /* Stack is at the bottom, so it can grow down */ 98 gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN; 99 100 return 0; 101 } 102 103 int init_cache_f_r(void) 104 { 105 /* Initialise the CPU cache(s) */ 106 return init_cache(); 107 } 108 109 int set_reloc_flag_r(void) 110 { 111 gd->flags = GD_FLG_RELOC; 112 113 return 0; 114 } 115 116 int mem_malloc_init_r(void) 117 { 118 mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3, 119 CONFIG_SYS_MALLOC_LEN); 120 121 return 0; 122 } 123 124 bd_t bd_data; 125 126 int init_bd_struct_r(void) 127 { 128 gd->bd = &bd_data; 129 memset(gd->bd, 0, sizeof(bd_t)); 130 131 return 0; 132 } 133 134 #ifndef CONFIG_SYS_NO_FLASH 135 int flash_init_r(void) 136 { 137 ulong size; 138 139 puts("Flash: "); 140 141 /* configure available FLASH banks */ 142 size = flash_init(); 143 144 print_size(size, "\n"); 145 146 return 0; 147 } 148 #endif 149 150 #ifdef CONFIG_STATUS_LED 151 int status_led_set_r(void) 152 { 153 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); 154 155 return 0; 156 } 157 #endif 158 159 int set_load_addr_r(void) 160 { 161 /* Initialize from environment */ 162 load_addr = getenv_ulong("loadaddr", 16, load_addr); 163 164 return 0; 165 } 166 167 int init_func_spi(void) 168 { 169 puts("SPI: "); 170 spi_init(); 171 puts("ready\n"); 172 return 0; 173 } 174 175 #ifdef CONFIG_OF_CONTROL 176 int find_fdt(void) 177 { 178 #ifdef CONFIG_OF_EMBED 179 /* Get a pointer to the FDT */ 180 gd->fdt_blob = _binary_dt_dtb_start; 181 #elif defined CONFIG_OF_SEPARATE 182 /* FDT is at end of image */ 183 gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE); 184 #endif 185 /* Allow the early environment to override the fdt address */ 186 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 187 (uintptr_t)gd->fdt_blob); 188 189 return 0; 190 } 191 192 int prepare_fdt(void) 193 { 194 /* For now, put this check after the console is ready */ 195 if (fdtdec_prepare_fdt()) { 196 panic("** CONFIG_OF_CONTROL defined but no FDT - please see " 197 "doc/README.fdt-control"); 198 } 199 200 return 0; 201 } 202 #endif 203