mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-24 10:58:52 +09:00
280 lines
7.1 KiB
C
280 lines
7.1 KiB
C
/*
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* U-boot - board.c First C file to be called contains init routines
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*
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* Copyright (c) 2005 blackfin.uclinux.org
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*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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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 <environment.h>
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#include "blackfin_board.h"
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#include "../drivers/smc91111.h"
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DECLARE_GLOBAL_DATA_PTR;
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extern flash_info_t flash_info[];
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static void mem_malloc_init(void)
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{
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mem_malloc_start = CFG_MALLOC_BASE;
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mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN);
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mem_malloc_brk = mem_malloc_start;
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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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ulong old = mem_malloc_brk;
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ulong 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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}
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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 display_banner(void)
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{
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sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
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printf("%s\n", version_string);
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return (0);
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}
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static void display_flash_config(ulong size)
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{
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puts("FLASH: ");
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print_size(size, "\n");
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return;
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}
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static int init_baudrate(void)
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{
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uchar tmp[64];
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int i = getenv_r("baudrate", tmp, sizeof(tmp));
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gd->bd->bi_baudrate = gd->baudrate = (i > 0)
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? (int) simple_strtoul(tmp, NULL, 10)
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: CONFIG_BAUDRATE;
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return (0);
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}
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#ifdef DEBUG
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static void display_global_data(void)
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{
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bd_t *bd;
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bd = gd->bd;
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printf("--flags:%x\n", gd->flags);
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printf("--board_type:%x\n", gd->board_type);
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printf("--baudrate:%x\n", gd->baudrate);
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printf("--have_console:%x\n", gd->have_console);
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printf("--ram_size:%x\n", gd->ram_size);
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printf("--reloc_off:%x\n", gd->reloc_off);
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printf("--env_addr:%x\n", gd->env_addr);
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printf("--env_valid:%x\n", gd->env_valid);
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printf("--bd:%x %x\n", gd->bd, bd);
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printf("---bi_baudrate:%x\n", bd->bi_baudrate);
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printf("---bi_ip_addr:%x\n", bd->bi_ip_addr);
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printf("---bi_enetaddr:%x %x %x %x %x %x\n",
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bd->bi_enetaddr[0],
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bd->bi_enetaddr[1],
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bd->bi_enetaddr[2],
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bd->bi_enetaddr[3],
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bd->bi_enetaddr[4],
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bd->bi_enetaddr[5]);
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printf("---bi_arch_number:%x\n", bd->bi_arch_number);
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printf("---bi_boot_params:%x\n", bd->bi_boot_params);
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printf("---bi_memstart:%x\n", bd->bi_memstart);
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printf("---bi_memsize:%x\n", bd->bi_memsize);
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printf("---bi_flashstart:%x\n", bd->bi_flashstart);
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printf("---bi_flashsize:%x\n", bd->bi_flashsize);
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printf("---bi_flashoffset:%x\n", bd->bi_flashoffset);
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printf("--jt:%x *:%x\n", gd->jt, *(gd->jt));
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}
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#endif
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/*
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* All attempts to come up with a "common" initialization sequence
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* that works for all boards and architectures failed: some of the
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* requirements are just _too_ different. To get rid of the resulting
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* mess of board dependend #ifdef'ed code we now make the whole
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* initialization sequence configurable to the user.
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*
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* The requirements for any new initalization function is simple: it
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* receives a pointer to the "global data" structure as it's only
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* argument, and returns an integer return code, where 0 means
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* "continue" and != 0 means "fatal error, hang the system".
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*/
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void board_init_f(ulong bootflag)
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{
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ulong addr;
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bd_t *bd;
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gd = (gd_t *) (CFG_GBL_DATA_ADDR);
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memset((void *) gd, 0, sizeof(gd_t));
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/* Board data initialization */
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addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
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/* Align to 4 byte boundary */
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addr &= ~(4 - 1);
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bd = (bd_t*)addr;
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gd->bd = bd;
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memset((void *) bd, 0, sizeof(bd_t));
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/* Initialize */
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init_IRQ();
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env_init(); /* initialize environment */
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init_baudrate(); /* initialze baudrate settings */
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serial_init(); /* serial communications setup */
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console_init_f();
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display_banner(); /* say that we are here */
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checkboard();
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#if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE)
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rtc_init();
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#endif
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timer_init();
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printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \
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CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000);
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printf("SDRAM: ");
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print_size(initdram(0), "\n");
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board_init_r((gd_t *) gd, 0x20000010);
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}
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void board_init_r(gd_t * id, ulong dest_addr)
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{
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ulong size;
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extern void malloc_bin_reloc(void);
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char *s, *e;
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bd_t *bd;
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int i;
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gd = id;
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gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
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bd = gd->bd;
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#if CONFIG_STAMP
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/* There are some other pointer constants we must deal with */
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/* configure available FLASH banks */
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size = flash_init();
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display_flash_config(size);
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flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
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bd->bi_flashstart = CFG_FLASH_BASE;
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bd->bi_flashsize = size;
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bd->bi_flashoffset = 0;
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#else
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bd->bi_flashstart = 0;
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bd->bi_flashsize = 0;
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bd->bi_flashoffset = 0;
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#endif
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/* initialize malloc() area */
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mem_malloc_init();
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malloc_bin_reloc();
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/* relocate environment function pointers etc. */
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env_relocate();
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/* board MAC address */
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s = getenv("ethaddr");
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for (i = 0; i < 6; ++i) {
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bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
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if (s)
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s = (*e) ? e + 1 : e;
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}
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/* IP Address */
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bd->bi_ip_addr = getenv_IPaddr("ipaddr");
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/* Initialize devices */
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devices_init();
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jumptable_init();
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/* Initialize the console (after the relocation and devices init) */
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console_init_r();
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/* Initialize from environment */
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if ((s = getenv("loadaddr")) != NULL) {
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load_addr = simple_strtoul(s, NULL, 16);
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}
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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if ((s = getenv("bootfile")) != NULL) {
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copy_filename(BootFile, s, sizeof(BootFile));
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}
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#endif
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#if defined(CONFIG_MISC_INIT_R)
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/* miscellaneous platform dependent initialisations */
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misc_init_r();
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#endif
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#ifdef CONFIG_DRIVER_SMC91111
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#ifdef SHARED_RESOURCES
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/* Switch to Ethernet */
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swap_to(ETHERNET);
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#endif
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if ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) {
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printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS);
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} else {
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printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
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}
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#ifdef SHARED_RESOURCES
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swap_to(FLASH);
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#endif
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#endif
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#ifdef CONFIG_SOFT_I2C
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init_func_i2c();
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#endif
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#ifdef DEBUG
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display_global_data(void);
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#endif
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/* main_loop() can return to retry autoboot, if so just run it again. */
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for (;;) {
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main_loop();
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}
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}
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#ifdef CONFIG_SOFT_I2C
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static int init_func_i2c (void)
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{
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puts ("I2C: ");
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i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
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puts ("ready\n");
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return (0);
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}
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#endif
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void hang(void)
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{
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puts("### ERROR ### Please RESET the board ###\n");
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for (;;);
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}
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