LXR uboot/nand_spl/board/freescale/mpc8569mds/nand

   1/*
   2 * Copyright 2009 Freescale Semiconductor, Inc.
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License as
   6 * published by the Free Software Foundation; either version 2 of
   7 * the License, or (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12 *
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18 * MA 02111-1307 USA
  19 *
  20 */
  21#include <common.h>
  22#include <mpc85xx.h>
  23#include <asm/io.h>
  24#include <ns16550.h>
  25#include <nand.h>
  26#include <asm/mmu.h>
  27#include <asm/immap_85xx.h>
  28#include <asm/fsl_ddr_sdram.h>
  29#include <asm/fsl_law.h>
  30
  31#define SYSCLK_66       66666666
  32
  33DECLARE_GLOBAL_DATA_PTR;
  34
  35void board_init_f(ulong bootflag)
  36{
  37        uint plat_ratio, bus_clk, sys_clk;
  38        volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  39
  40        sys_clk = SYSCLK_66;
  41
  42        plat_ratio = gur->porpllsr & 0x0000003e;
  43        plat_ratio >>= 1;
  44        bus_clk = plat_ratio * sys_clk;
  45        NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  46                        bus_clk / 16 / CONFIG_BAUDRATE);
  47
  48        puts("\nNAND boot... ");
  49
  50        /* copy code to DDR and jump to it - this should not return */
  51        /* NOTE - code has to be copied out of NAND buffer before
  52         * other blocks can be read.
  53         */
  54        relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
  55                        CONFIG_SYS_NAND_U_BOOT_RELOC);
  56}
  57
  58void board_init_r(gd_t *gd, ulong dest_addr)
  59{
  60        nand_boot();
  61}
  62
  63void putc(char c)
  64{
  65        if (c == '\n')
  66                NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
  67
  68        NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
  69}
  70
  71void puts(const char *str)
  72{
  73        while (*str)
  74                putc(*str++);
  75}
  76