board/freescale/p1022ds/spl.c

   1 /*
   2  * Copyright 2013 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
  22 #include <common.h>
  23 #include <ns16550.h>
  24 #include <malloc.h>
  25 #include <mmc.h>
  26 #include <nand.h>
  27 #include <i2c.h>
  28 #include "../common/ngpixis.h"
  29 #include <fsl_esdhc.h>
  30 #include <spi_flash.h>
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 static const u32 sysclk_tbl[] = {
  35         66666000, 7499900, 83332500, 8999900,
  36         99999000, 11111000, 12499800, 13333200
  37 };
  38
  39 ulong get_effective_memsize(void)
  40 {
  41         return CONFIG_SYS_L2_SIZE;
  42 }
  43
  44 void board_init_f(ulong bootflag)
  45 {
  46         int px_spd;
  47         u32 plat_ratio, sys_clk, bus_clk;
  48         ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  49
  50         console_init_f();
  51
  52         /* Set pmuxcr to allow both i2c1 and i2c2 */
  53         setbits_be32(&gur->pmuxcr, in_be32(&gur->pmuxcr) | 0x1000);
  54         setbits_be32(&gur->pmuxcr,
  55                      in_be32(&gur->pmuxcr) | MPC85xx_PMUXCR_SD_DATA);
  56
  57 #ifdef CONFIG_SPL_SPI_BOOT
  58         /* Enable the SPI */
  59         clrsetbits_8(&pixis->brdcfg0, PIXIS_ELBC_SPI_MASK, PIXIS_SPI);
  60 #endif
  61
  62         /* Read back the register to synchronize the write. */
  63         in_be32(&gur->pmuxcr);
  64
  65         /* initialize selected port with appropriate baud rate */
  66         px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
  67         sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
  68         plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
  69         bus_clk = sys_clk * plat_ratio / 2;
  70
  71         NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  72                      bus_clk / 16 / CONFIG_BAUDRATE);
  73 #ifdef CONFIG_SPL_MMC_BOOT
  74         puts("\nSD boot...\n");
  75 #elif defined(CONFIG_SPL_SPI_BOOT)
  76         puts("\nSPI Flash boot...\n");
  77 #endif
  78
  79         /* copy code to RAM and jump to it - this should not return */
  80         /* NOTE - code has to be copied out of NAND buffer before
  81          * other blocks can be read.
  82          */
  83         relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
  84 }
  85
  86 void board_init_r(gd_t *gd, ulong dest_addr)
  87 {
  88         /* Pointer is writable since we allocated a register for it */
  89         gd = (gd_t *)CONFIG_SPL_GD_ADDR;
  90         bd_t *bd;
  91
  92         memset(gd, 0, sizeof(gd_t));
  93         bd = (bd_t *)(CONFIG_SPL_GD_ADDR + sizeof(gd_t));
  94         memset(bd, 0, sizeof(bd_t));
  95         gd->bd = bd;
  96         bd->bi_memstart = CONFIG_SYS_INIT_L2_ADDR;
  97         bd->bi_memsize = CONFIG_SYS_L2_SIZE;
  98
  99         probecpu();
 100         get_clocks();
 101         mem_malloc_init(CONFIG_SPL_RELOC_MALLOC_ADDR,
 102                         CONFIG_SPL_RELOC_MALLOC_SIZE);
 103 #ifndef CONFIG_SPL_NAND_BOOT
 104         env_init();
 105 #endif
 106 #ifdef CONFIG_SPL_MMC_BOOT
 107         mmc_initialize(bd);
 108 #endif
 109         /* relocate environment function pointers etc. */
 110 #ifdef CONFIG_SPL_NAND_BOOT
 111         nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
 112                             (uchar *)CONFIG_ENV_ADDR);
 113
 114         gd->env_addr  = (ulong)(CONFIG_ENV_ADDR);
 115         gd->env_valid = 1;
 116 #else
 117         env_relocate();
 118 #endif
 119
 120         i2c_init(CONFIG_SYS_FSL_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 121
 122         gd->ram_size = initdram(0);
 123 #ifdef CONFIG_SPL_NAND_BOOT
 124         puts("Tertiary program loader running in sram...");
 125 #else
 126         puts("Second program loader running in sram...\n");
 127 #endif
 128
 129 #ifdef CONFIG_SPL_MMC_BOOT
 130         mmc_boot();
 131 #elif defined(CONFIG_SPL_SPI_BOOT)
 132         spi_boot();
 133 #elif defined(CONFIG_SPL_NAND_BOOT)
 134         nand_boot();
 135 #endif
 136 }