mirror of
https://github.com/brain-hackers/u-boot-brain
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![Gabe Black](/assets/img/avatar_default.png)
Allow a device tree to be provided through the standard mechanisms. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Simon Glass <sjg@chromium.org>
203 lines
4.1 KiB
C
203 lines
4.1 KiB
C
/*
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* (C) Copyright 2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <stdio_dev.h>
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#include <version.h>
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#include <malloc.h>
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#include <net.h>
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#include <ide.h>
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#include <serial.h>
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#include <spi.h>
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#include <status_led.h>
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#include <asm/processor.h>
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#include <asm/u-boot-x86.h>
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#include <linux/compiler.h>
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#include <asm/init_helpers.h>
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DECLARE_GLOBAL_DATA_PTR;
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/************************************************************************
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* Init Utilities *
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************************************************************************
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* Some of this code should be moved into the core functions,
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* or dropped completely,
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* but let's get it working (again) first...
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*/
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int display_banner(void)
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{
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printf("\n\n%s\n\n", version_string);
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return 0;
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}
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int display_dram_config(void)
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{
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int i;
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puts("DRAM Configuration:\n");
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
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print_size(gd->bd->bi_dram[i].size, "\n");
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}
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return 0;
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}
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int init_baudrate_f(void)
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{
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gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
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return 0;
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}
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__weak int calculate_relocation_address(void)
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{
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ulong text_start = (ulong)&__text_start;
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ulong bss_end = (ulong)&__bss_end;
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ulong dest_addr;
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/*
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* NOTE: All destination address are rounded down to 16-byte
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* boundary to satisfy various worst-case alignment
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* requirements
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*/
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/* Stack is at top of available memory */
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dest_addr = gd->ram_size;
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/* U-Boot is at the top */
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dest_addr -= (bss_end - text_start);
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dest_addr &= ~15;
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gd->relocaddr = dest_addr;
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gd->reloc_off = (dest_addr - text_start);
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/* Stack is at the bottom, so it can grow down */
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gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
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return 0;
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}
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int init_cache_f_r(void)
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{
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/* Initialise the CPU cache(s) */
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return init_cache();
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}
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int set_reloc_flag_r(void)
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{
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gd->flags = GD_FLG_RELOC;
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return 0;
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}
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int mem_malloc_init_r(void)
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{
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mem_malloc_init(((gd->relocaddr - CONFIG_SYS_MALLOC_LEN)+3)&~3,
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CONFIG_SYS_MALLOC_LEN);
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return 0;
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}
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bd_t bd_data;
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int init_bd_struct_r(void)
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{
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gd->bd = &bd_data;
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memset(gd->bd, 0, sizeof(bd_t));
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return 0;
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}
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#ifndef CONFIG_SYS_NO_FLASH
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int flash_init_r(void)
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{
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ulong size;
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puts("Flash: ");
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/* configure available FLASH banks */
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size = flash_init();
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print_size(size, "\n");
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return 0;
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}
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#endif
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#ifdef CONFIG_STATUS_LED
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int status_led_set_r(void)
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{
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status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
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return 0;
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}
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#endif
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int set_load_addr_r(void)
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{
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/* Initialize from environment */
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load_addr = getenv_ulong("loadaddr", 16, load_addr);
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return 0;
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}
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int init_func_spi(void)
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{
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puts("SPI: ");
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spi_init();
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puts("ready\n");
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return 0;
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}
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#ifdef CONFIG_OF_CONTROL
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int find_fdt(void)
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{
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#ifdef CONFIG_OF_EMBED
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/* Get a pointer to the FDT */
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gd->fdt_blob = _binary_dt_dtb_start;
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#elif defined CONFIG_OF_SEPARATE
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/* FDT is at end of image */
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gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
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#endif
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/* Allow the early environment to override the fdt address */
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gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
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(uintptr_t)gd->fdt_blob);
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return 0;
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}
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int prepare_fdt(void)
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{
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/* For now, put this check after the console is ready */
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if (fdtdec_prepare_fdt()) {
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panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
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"doc/README.fdt-control");
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}
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return 0;
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}
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#endif
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