LXR uboot/board/freescale/p1022ds/spl

   1/*
   2 * Copyright 2011 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#include <asm/fsl_law.h>
  12#include <fsl_ddr_sdram.h>
  13
  14
  15const static u32 sysclk_tbl[] = {
  16        66666000, 7499900, 83332500, 8999900,
  17        99999000, 11111000, 12499800, 13333200
  18};
  19
  20void board_init_f(ulong bootflag)
  21{
  22        int px_spd;
  23        u32 plat_ratio, sys_clk, bus_clk;
  24        ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  25
  26#if defined(CONFIG_SYS_NAND_BR_PRELIM) && defined(CONFIG_SYS_NAND_OR_PRELIM)
  27        set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM);
  28        set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM);
  29#endif
  30        /* for FPGA */
  31        set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
  32        set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
  33
  34        /* initialize selected port with appropriate baud rate */
  35        px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
  36        sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
  37        plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
  38        bus_clk = sys_clk * plat_ratio / 2;
  39
  40        NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  41                        bus_clk / 16 / CONFIG_BAUDRATE);
  42
  43        puts("\nNAND boot... ");
  44
  45        /* copy code to RAM and jump to it - this should not return */
  46        /* NOTE - code has to be copied out of NAND buffer before
  47         * other blocks can be read.
  48         */
  49        relocate_code(CONFIG_SPL_RELOC_STACK, 0,
  50                        CONFIG_SPL_RELOC_TEXT_BASE);
  51}
  52
  53void board_init_r(gd_t *gd, ulong dest_addr)
  54{
  55        puts("\nSecond program loader running in sram...");
  56        nand_boot();
  57}
  58
  59void putc(char c)
  60{
  61        if (c == '\n')
  62                NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
  63
  64        NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
  65}
  66
  67void puts(const char *str)
  68{
  69        while (*str)
  70                putc(*str++);
  71}
  72