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 <fdtdec.h> 26 #include <stdio_dev.h> 27 #include <version.h> 28 #include <malloc.h> 29 #include <net.h> 30 #include <ide.h> 31 #include <serial.h> 32 #include <spi.h> 33 #include <status_led.h> 34 #include <asm/processor.h> 35 #include <asm/sections.h> 36 #include <asm/u-boot-x86.h> 37 #include <linux/compiler.h> 38 39 #include <asm/init_helpers.h> 40 41 DECLARE_GLOBAL_DATA_PTR; 42 43 /************************************************************************ 44 * Init Utilities * 45 ************************************************************************ 46 * Some of this code should be moved into the core functions, 47 * or dropped completely, 48 * but let's get it working (again) first... 49 */ 50 51 int display_banner(void) 52 { 53 printf("\n\n%s\n\n", version_string); 54 55 return 0; 56 } 57 58 int display_dram_config(void) 59 { 60 int i; 61 62 puts("DRAM Configuration:\n"); 63 64 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 65 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); 66 print_size(gd->bd->bi_dram[i].size, "\n"); 67 } 68 69 return 0; 70 } 71 72 int init_baudrate_f(void) 73 { 74 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); 75 return 0; 76 } 77 78 /* Get the top of usable RAM */ 79 __weak ulong board_get_usable_ram_top(ulong total_size) 80 { 81 return gd->ram_size; 82 } 83 84 int calculate_relocation_address(void) 85 { 86 const ulong uboot_size = (uintptr_t)&__bss_end - 87 (uintptr_t)&__text_start; 88 ulong total_size; 89 ulong dest_addr; 90 ulong fdt_size = 0; 91 92 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL) 93 if (gd->fdt_blob) 94 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); 95 #endif 96 total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN + 97 CONFIG_SYS_STACK_SIZE + fdt_size; 98 99 dest_addr = board_get_usable_ram_top(total_size); 100 /* 101 * NOTE: All destination address are rounded down to 16-byte 102 * boundary to satisfy various worst-case alignment 103 * requirements 104 */ 105 dest_addr &= ~15; 106 107 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL) 108 /* 109 * If the device tree is sitting immediate above our image then we 110 * must relocate it. If it is embedded in the data section, then it 111 * will be relocated with other data. 112 */ 113 if (gd->fdt_blob) { 114 dest_addr -= fdt_size; 115 gd->new_fdt = (void *)dest_addr; 116 dest_addr &= ~15; 117 } 118 #endif 119 /* U-Boot is below the FDT */ 120 dest_addr -= uboot_size; 121 dest_addr &= ~((1 << 12) - 1); 122 gd->relocaddr = dest_addr; 123 gd->reloc_off = dest_addr - (uintptr_t)&__text_start; 124 125 /* Stack is at the bottom, so it can grow down */ 126 gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN; 127 128 return 0; 129 } 130 131 int init_cache_f_r(void) 132 { 133 /* Initialise the CPU cache(s) */ 134 return init_cache(); 135 } 136 137 int set_reloc_flag_r(void) 138 { 139 gd->flags = GD_FLG_RELOC; 140 141 return 0; 142 } 143 144 int mem_malloc_init_r(void) 145 { 146 mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3, 147 CONFIG_SYS_MALLOC_LEN); 148 149 return 0; 150 } 151 152 bd_t bd_data; 153 154 int init_bd_struct_r(void) 155 { 156 gd->bd = &bd_data; 157 memset(gd->bd, 0, sizeof(bd_t)); 158 159 return 0; 160 } 161 162 #ifndef CONFIG_SYS_NO_FLASH 163 int flash_init_r(void) 164 { 165 ulong size; 166 167 puts("Flash: "); 168 169 /* configure available FLASH banks */ 170 size = flash_init(); 171 172 print_size(size, "\n"); 173 174 return 0; 175 } 176 #endif 177 178 #ifdef CONFIG_STATUS_LED 179 int status_led_set_r(void) 180 { 181 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); 182 183 return 0; 184 } 185 #endif 186 187 int set_load_addr_r(void) 188 { 189 /* Initialize from environment */ 190 load_addr = getenv_ulong("loadaddr", 16, load_addr); 191 192 return 0; 193 } 194 195 int init_func_spi(void) 196 { 197 puts("SPI: "); 198 spi_init(); 199 puts("ready\n"); 200 return 0; 201 } 202 203 #ifdef CONFIG_OF_CONTROL 204 int find_fdt(void) 205 { 206 #ifdef CONFIG_OF_EMBED 207 /* Get a pointer to the FDT */ 208 gd->fdt_blob = _binary_dt_dtb_start; 209 #elif defined CONFIG_OF_SEPARATE 210 /* FDT is at end of image */ 211 gd->fdt_blob = (ulong *)&_end; 212 #endif 213 /* Allow the early environment to override the fdt address */ 214 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, 215 (uintptr_t)gd->fdt_blob); 216 217 return 0; 218 } 219 220 int prepare_fdt(void) 221 { 222 /* For now, put this check after the console is ready */ 223 if (fdtdec_prepare_fdt()) { 224 panic("** CONFIG_OF_CONTROL defined but no FDT - please see " 225 "doc/README.fdt-control"); 226 } 227 228 return 0; 229 } 230 #endif 231