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https://github.com/brain-hackers/u-boot-brain
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![Haavard Skinnemoen](/assets/img/avatar_default.png)
Split the avr32 initialization code into a function to run before relocation, board_init_f and a function to run after relocation, board_init_r. For now, board_init_f simply calls board_init_r at the end. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
182 lines
3.9 KiB
C
182 lines
3.9 KiB
C
/*
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* Copyright (C) 2004-2006 Atmel Corporation
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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 <malloc.h>
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#include <devices.h>
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#include <version.h>
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#include <net.h>
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#include <asm/initcalls.h>
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#include <asm/sections.h>
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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const char version_string[] =
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U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ") " CONFIG_IDENT_STRING;
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unsigned long monitor_flash_len;
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/*
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* Begin and end of memory area for malloc(), and current "brk"
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*/
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static unsigned long mem_malloc_start = 0;
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static unsigned long mem_malloc_end = 0;
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static unsigned long mem_malloc_brk = 0;
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/* The malloc area is wherever the board wants it to be */
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static void mem_malloc_init(void)
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{
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mem_malloc_start = CFG_MALLOC_START;
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mem_malloc_end = CFG_MALLOC_END;
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mem_malloc_brk = mem_malloc_start;
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printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
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mem_malloc_start, mem_malloc_end);
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memset ((void *)mem_malloc_start, 0,
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mem_malloc_end - mem_malloc_start);
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}
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void *sbrk(ptrdiff_t increment)
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{
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unsigned long old = mem_malloc_brk;
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unsigned long new = old + increment;
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if ((new < mem_malloc_start) || (new > mem_malloc_end))
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return NULL;
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mem_malloc_brk = new;
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return ((void *)old);
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}
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static int init_baudrate(void)
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{
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char tmp[64];
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int i;
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i = getenv_r("baudrate", tmp, sizeof(tmp));
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if (i > 0) {
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gd->baudrate = simple_strtoul(tmp, NULL, 10);
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} else {
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gd->baudrate = CONFIG_BAUDRATE;
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}
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return 0;
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}
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static int display_banner (void)
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{
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printf ("\n\n%s\n\n", version_string);
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printf ("U-Boot code: %p -> %p data: %p -> %p\n",
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_text, _etext, _data, _end);
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return 0;
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}
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void hang(void)
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{
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for (;;) ;
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}
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static 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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static void display_flash_config (void)
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{
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puts ("Flash: ");
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print_size(gd->bd->bi_flashsize, " ");
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printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
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}
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void board_init_f(ulong unused)
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{
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gd_t gd_data;
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/* Initialize the global data pointer */
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memset(&gd_data, 0, sizeof(gd_data));
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gd = &gd_data;
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/* Perform initialization sequence */
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cpu_init();
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timer_init();
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env_init();
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init_baudrate();
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serial_init();
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console_init_f();
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display_banner();
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board_init_memories();
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board_init_r(gd, CFG_MONITOR_BASE);
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}
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void board_init_r(gd_t *new_gd, ulong dest_addr)
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{
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gd = new_gd;
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monitor_flash_len = _edata - _text;
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mem_malloc_init();
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gd->bd = malloc(sizeof(bd_t));
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memset(gd->bd, 0, sizeof(bd_t));
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gd->bd->bi_baudrate = gd->baudrate;
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gd->bd->bi_dram[0].start = CFG_SDRAM_BASE;
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gd->bd->bi_dram[0].size = gd->sdram_size;
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board_init_info();
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flash_init();
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if (gd->bd->bi_flashsize)
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display_flash_config();
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if (gd->bd->bi_dram[0].size)
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display_dram_config();
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gd->bd->bi_boot_params = malloc(CFG_BOOTPARAMS_LEN);
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if (!gd->bd->bi_boot_params)
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puts("WARNING: Cannot allocate space for boot parameters\n");
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/* initialize environment */
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env_relocate();
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devices_init();
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jumptable_init();
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console_init_r();
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for (;;) {
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main_loop();
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}
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}
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