LXR uboot/nand_spl/board/freescale/mpc8572ds/nand

   1/*
   2 * Copyright 2009-2010 Freescale Semiconductor, Inc.
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#include <common.h>
   8#include <ns16550.h>
   9#include <asm/io.h>
  10#include <nand.h>
  11
  12u32 sysclk_tbl[] = {
  13        33333000, 39999600, 49999500, 66666000,
  14        83332500, 99999000, 133332000, 166665000
  15};
  16
  17void board_init_f(ulong bootflag)
  18{
  19        int px_spd;
  20        u32 plat_ratio, bus_clk, sys_clk;
  21        ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  22
  23#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
  24        /* for FPGA */
  25        set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
  26        set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
  27#else
  28#error CONFIG_SYS_BR3_PRELIM, CONFIG_SYS_OR3_PRELIM must be defined
  29#endif
  30
  31        /* initialize selected port with appropriate baud rate */
  32        px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
  33        sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
  34        plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
  35        bus_clk = sys_clk * plat_ratio / 2;
  36
  37        NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  38                        bus_clk / 16 / CONFIG_BAUDRATE);
  39
  40        puts("\nNAND boot... ");
  41
  42        /* copy code to RAM and jump to it - this should not return */
  43        /* NOTE - code has to be copied out of NAND buffer before
  44         * other blocks can be read.
  45         */
  46        relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
  47                        CONFIG_SYS_NAND_U_BOOT_RELOC);
  48}
  49
  50void board_init_r(gd_t *gd, ulong dest_addr)
  51{
  52        nand_boot();
  53}
  54
  55void putc(char c)
  56{
  57        if (c == '\n')
  58                NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
  59
  60        NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
  61}
  62
  63void puts(const char *str)
  64{
  65        while (*str)
  66                putc(*str++);
  67}
  68