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 /* Get the top of usable RAM */ 77 __weak ulong board_get_usable_ram_top(ulong total_size) 78 { 79 return gd->ram_size; 80 } 81 82 int calculate_relocation_address(void) 83 { 84 const ulong uboot_size = (uintptr_t)&__bss_end - 85 (uintptr_t)&__text_start; 86 ulong total_size; 87 ulong dest_addr; 88 89 total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN + 90 CONFIG_SYS_STACK_SIZE; 91 92 /* 93 * NOTE: All destination address are rounded down to 16-byte 94 * boundary to satisfy various worst-case alignment 95 * requirements 96 */ 97 dest_addr = board_get_usable_ram_top(total_size); 98 99 /* U-Boot is below the FDT */ 100 dest_addr -= uboot_size; 101 dest_addr &= ~((1 << 12) - 1); 102 gd->relocaddr = dest_addr; 103 gd->reloc_off = dest_addr - (uintptr_t)&__text_start; 104 105 /* Stack is at the bottom, so it can grow down */ 106 gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN; 107 108 return 0; 109 } 110 111 int init_cache_f_r(void) 112 { 113 /* Initialise the CPU cache(s) */ 114 return init_cache(); 115 } 116 117 int set_reloc_flag_r(void) 118 { 119 gd->flags = GD_FLG_RELOC; 120 121 return 0; 122 } 123 124 int mem_malloc_init_r(void) 125 { 126 mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3, 127 CONFIG_SYS_MALLOC_LEN); 128 129 return 0; 130 } 131 132 bd_t bd_data; 133 134 int init_bd_struct_r(void) 135 { 136 gd->bd = &bd_data; 137 memset(gd->bd, 0, sizeof(bd_t)); 138 139 return 0; 140 } 141 142 #ifndef CONFIG_SYS_NO_FLASH 143 int flash_init_r(void) 144 { 145 ulong size; 146 147 puts("Flash: "); 148 149 /* configure available FLASH banks */ 150 size = flash_init(); 151 152 print_size(size, "\n"); 153 154 return 0; 155 } 156 #endif 157 158 #ifdef CONFIG_STATUS_LED 159 int status_led_set_r(void) 160 { 161 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); 162 163 return 0; 164 } 165 #endif 166 167 int set_load_addr_r(void) 168 { 169 /* Initialize from environment */ 170 load_addr = getenv_ulong("loadaddr", 16, load_addr); 171 172 return 0; 173 } 174 175 int init_func_spi(void) 176 { 177 puts("SPI: "); 178 spi_init(); 179 puts("ready\n"); 180 return 0; 181 } 182 183 #ifdef CONFIG_OF_CONTROL 184 int find_fdt(void) 185 { 186 #ifdef CONFIG_OF_EMBED 187 /* Get a pointer to the FDT */ 188 gd->fdt_blob = _binary_dt_dtb_start; 189 #elif defined CONFIG_OF_SEPARATE 190 /* FDT is at end of image */ 191 gd->fdt_blob = (ulong *)&_end; 192 #endif 193 /* Allow the early environment to override the fdt address */ 194 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 195 (uintptr_t)gd->fdt_blob); 196 197 return 0; 198 } 199 200 int prepare_fdt(void) 201 { 202 /* For now, put this check after the console is ready */ 203 if (fdtdec_prepare_fdt()) { 204 panic("** CONFIG_OF_CONTROL defined but no FDT - please see " 205 "doc/README.fdt-control"); 206 } 207 208 return 0; 209 } 210 #endif 211