mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-17 23:48:52 +09:00
452 lines
11 KiB
C
452 lines
11 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) 2005-2007 Analog Devices Inc.
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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., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 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 <i2c.h>
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#include "blackfin_board.h"
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#include <asm/cplb.h>
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#include "../drivers/net/smc91111.h"
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#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
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#include <post.h>
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int post_flag;
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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#ifndef CFG_NO_FLASH
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extern flash_info_t flash_info[];
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#endif
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static inline u_long get_vco(void)
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{
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u_long msel;
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u_long vco;
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msel = (*pPLL_CTL >> 9) & 0x3F;
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if (0 == msel)
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msel = 64;
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vco = CONFIG_CLKIN_HZ;
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vco >>= (1 & *pPLL_CTL); /* DF bit */
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vco = msel * vco;
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return vco;
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}
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/*Get the Core clock*/
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u_long get_cclk(void)
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{
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u_long csel, ssel;
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if (*pPLL_STAT & 0x1)
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return CONFIG_CLKIN_HZ;
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ssel = *pPLL_DIV;
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csel = ((ssel >> 4) & 0x03);
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ssel &= 0xf;
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if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
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return get_vco() / ssel;
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return get_vco() >> csel;
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}
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/* Get the System clock */
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u_long get_sclk(void)
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{
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u_long ssel;
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if (*pPLL_STAT & 0x1)
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return CONFIG_CLKIN_HZ;
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ssel = (*pPLL_DIV & 0xf);
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return get_vco() / ssel;
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}
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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, 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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char 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], bd->bi_enetaddr[4], 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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/* we cover everything with 4 meg pages, and need an extra for L1 */
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unsigned int icplb_table[page_descriptor_table_size][2];
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unsigned int dcplb_table[page_descriptor_table_size][2];
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void init_cplbtables(void)
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{
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int i, j;
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j = 0;
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icplb_table[j][0] = 0xFFA00000;
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icplb_table[j][1] = L1_IMEMORY;
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j++;
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for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
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icplb_table[j][0] = (i * 4 * 1024 * 1024);
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if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
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&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
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icplb_table[j][1] = SDRAM_IKERNEL;
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} else {
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icplb_table[j][1] = SDRAM_IGENERIC;
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}
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j++;
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}
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#if defined(CONFIG_BF561)
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/* MAC space */
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icplb_table[j][0] = 0x2C000000;
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icplb_table[j][1] = SDRAM_INON_CHBL;
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j++;
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/* Async Memory space */
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for (i = 0; i < 3; i++) {
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icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
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icplb_table[j][1] = SDRAM_INON_CHBL;
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j++;
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}
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#else
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icplb_table[j][0] = 0x20000000;
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icplb_table[j][1] = SDRAM_INON_CHBL;
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#endif
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j = 0;
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dcplb_table[j][0] = 0xFF800000;
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dcplb_table[j][1] = L1_DMEMORY;
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j++;
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for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
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dcplb_table[j][0] = (i * 4 * 1024 * 1024);
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if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
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&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
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dcplb_table[j][1] = SDRAM_DKERNEL;
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} else {
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dcplb_table[j][1] = SDRAM_DGENERIC;
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}
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j++;
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}
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#if defined(CONFIG_BF561)
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/* MAC space */
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dcplb_table[j][0] = 0x2C000000;
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dcplb_table[j][1] = SDRAM_EBIU;
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j++;
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/* Flash space */
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for (i = 0; i < 3; i++) {
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dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
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dcplb_table[j][1] = SDRAM_EBIU;
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j++;
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}
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#else
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dcplb_table[j][0] = 0x20000000;
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dcplb_table[j][1] = SDRAM_EBIU;
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#endif
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}
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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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int i;
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init_cplbtables();
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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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#ifdef CONFIG_ICACHE_ON
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icache_enable();
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#endif
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#ifdef CONFIG_DCACHE_ON
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dcache_enable();
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#endif
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display_banner(); /* say that we are here */
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for (i = 0; i < page_descriptor_table_size; i++) {
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debug
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("data (%02i)= 0x%08x : 0x%08x intr = 0x%08x : 0x%08x\n",
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i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
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icplb_table[i][1]);
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}
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checkboard();
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#if defined(CONFIG_RTC_BF533) && defined(CONFIG_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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get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
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printf("SDRAM: ");
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print_size(initdram(0), "\n");
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#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
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post_init_f();
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post_bootmode_init();
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post_run(NULL, POST_ROM | post_bootmode_get(0));
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#endif
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board_init_r((gd_t *) gd, 0x20000010);
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}
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#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_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 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 defined(CONFIG_BF537) && defined(CONFIG_POST)
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post_output_backlog();
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post_reloc();
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#endif
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#if (CONFIG_STAMP || CONFIG_BF537 || CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
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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,
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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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#ifdef CONFIG_SPI
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# if ! defined(CFG_ENV_IS_IN_EEPROM)
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spi_init_f();
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# endif
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spi_init_r();
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#endif
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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 defined(CONFIG_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_CMD_NAND)
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puts("NAND: ");
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nand_init(); /* go init the NAND */
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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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#if ((BFIN_CPU == ADSP_BF537) || (BFIN_CPU == ADSP_BF536))
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printf("Net: ");
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eth_initialize(bd);
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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",
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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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#if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_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();
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#endif
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#if defined(CONFIG_BF537) && defined(CONFIG_POST)
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if (post_flag)
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post_run(NULL, POST_RAM | post_bootmode_get(0));
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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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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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