LXR uboot/board/freescale/p1_p2_rdb/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 <linux/compiler.h>
  12#include <asm/fsl_law.h>
  13#include <fsl_ddr_sdram.h>
  14#include <asm/global_data.h>
  15
  16DECLARE_GLOBAL_DATA_PTR;
  17#define SYSCLK_MASK     0x00200000
  18#define BOARDREV_MASK   0x10100000
  19
  20#define SYSCLK_66       66666666
  21#define SYSCLK_100      100000000
  22
  23unsigned long get_board_sys_clk(ulong dummy)
  24{
  25        ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
  26        u32 val_gpdat, sysclk_gpio;
  27
  28        val_gpdat = in_be32(&pgpio->gpdat);
  29        sysclk_gpio = val_gpdat & SYSCLK_MASK;
  30
  31        if (sysclk_gpio == 0)
  32                return SYSCLK_66;
  33        else
  34                return SYSCLK_100;
  35
  36        return 0;
  37}
  38
  39void board_init_f(ulong bootflag)
  40{
  41        u32 plat_ratio;
  42        ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  43
  44#if defined(CONFIG_SYS_NAND_BR_PRELIM) && defined(CONFIG_SYS_NAND_OR_PRELIM)
  45        set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM);
  46        set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM);
  47#endif
  48
  49        /* initialize selected port with appropriate baud rate */
  50        plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
  51        plat_ratio >>= 1;
  52        gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
  53
  54        NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  55                     gd->bus_clk / 16 / CONFIG_BAUDRATE);
  56
  57        puts("\nNAND boot... ");
  58
  59        /* copy code to RAM and jump to it - this should not return */
  60        /* NOTE - code has to be copied out of NAND buffer before
  61         * other blocks can be read.
  62         */
  63        relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
  64}
  65
  66void board_init_r(gd_t *gd, ulong dest_addr)
  67{
  68        puts("\nSecond program loader running in sram...");
  69        nand_boot();
  70}
  71
  72void putc(char c)
  73{
  74        if (c == '\n')
  75                NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
  76
  77        NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
  78}
  79
  80void puts(const char *str)
  81{
  82        while (*str)
  83                putc(*str++);
  84}
  85