3 * Graeme Russ, <graeme.russ@gmail.com>
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 #include <stdio_dev.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>
39 #include <asm/init_helpers.h>
41 DECLARE_GLOBAL_DATA_PTR;
43 /************************************************************************
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...
51 int display_banner(void)
53 printf("\n\n%s\n\n", version_string);
58 int display_dram_config(void)
62 puts("DRAM Configuration:\n");
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");
72 int init_baudrate_f(void)
74 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
78 /* Get the top of usable RAM */
79 __weak ulong board_get_usable_ram_top(ulong total_size)
84 int calculate_relocation_address(void)
86 const ulong uboot_size = (uintptr_t)&__bss_end -
87 (uintptr_t)&__text_start;
92 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
94 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
96 total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN +
97 CONFIG_SYS_STACK_SIZE + fdt_size;
99 dest_addr = board_get_usable_ram_top(total_size);
101 * NOTE: All destination address are rounded down to 16-byte
102 * boundary to satisfy various worst-case alignment
107 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
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.
114 dest_addr -= fdt_size;
115 gd->new_fdt = (void *)dest_addr;
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;
125 /* Stack is at the bottom, so it can grow down */
126 gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
131 int init_cache_f_r(void)
133 /* Initialise the CPU cache(s) */
137 int set_reloc_flag_r(void)
139 gd->flags = GD_FLG_RELOC;
144 int mem_malloc_init_r(void)
146 mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3,
147 CONFIG_SYS_MALLOC_LEN);
154 int init_bd_struct_r(void)
157 memset(gd->bd, 0, sizeof(bd_t));
162 #ifndef CONFIG_SYS_NO_FLASH
163 int flash_init_r(void)
169 /* configure available FLASH banks */
172 print_size(size, "\n");
178 #ifdef CONFIG_STATUS_LED
179 int status_led_set_r(void)
181 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
187 int set_load_addr_r(void)
189 /* Initialize from environment */
190 load_addr = getenv_ulong("loadaddr", 16, load_addr);
195 int init_func_spi(void)
203 #ifdef CONFIG_OF_CONTROL
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;
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);
220 int prepare_fdt(void)
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");