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
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 static const u32 sysclk_tbl[] = {
  34         66666000, 7499900, 83332500, 8999900,
  35         99999000, 11111000, 12499800, 13333200
  36 };
  37
  38 ulong get_effective_memsize(void)
  39 {
  40         return CONFIG_SYS_L2_SIZE;
  41 }
  42
  43 void board_init_f(ulong bootflag)
  44 {
  45         int px_spd;
  46         u32 plat_ratio, sys_clk, bus_clk;
  47         ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  48
  49         console_init_f();
  50
  51         /* Set pmuxcr to allow both i2c1 and i2c2 */
  52         setbits_be32(&gur->pmuxcr, in_be32(&gur->pmuxcr) | 0x1000);
  53         setbits_be32(&gur->pmuxcr,
  54                      in_be32(&gur->pmuxcr) | MPC85xx_PMUXCR_SD_DATA);
  55
  56         /* Read back the register to synchronize the write. */
  57         in_be32(&gur->pmuxcr);
  58
  59         /* initialize selected port with appropriate baud rate */
  60         px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
  61         sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
  62         plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
  63         bus_clk = sys_clk * plat_ratio / 2;
  64
  65         NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
  66                      bus_clk / 16 / CONFIG_BAUDRATE);
  67 #ifdef CONFIG_SPL_MMC_BOOT
  68         puts("\nSD boot...\n");
  69 #endif
  70
  71         /* copy code to RAM and jump to it - this should not return */
  72         /* NOTE - code has to be copied out of NAND buffer before
  73          * other blocks can be read.
  74          */
  75         relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
  76 }
  77
  78 void board_init_r(gd_t *gd, ulong dest_addr)
  79 {
  80         /* Pointer is writable since we allocated a register for it */
  81         gd = (gd_t *)CONFIG_SPL_GD_ADDR;
  82         bd_t *bd;
  83
  84         memset(gd, 0, sizeof(gd_t));
  85         bd = (bd_t *)(CONFIG_SPL_GD_ADDR + sizeof(gd_t));
  86         memset(bd, 0, sizeof(bd_t));
  87         gd->bd = bd;
  88         bd->bi_memstart = CONFIG_SYS_INIT_L2_ADDR;
  89         bd->bi_memsize = CONFIG_SYS_L2_SIZE;
  90
  91         probecpu();
  92         get_clocks();
  93         mem_malloc_init(CONFIG_SPL_RELOC_MALLOC_ADDR,
  94                         CONFIG_SPL_RELOC_MALLOC_SIZE);
  95         env_init();
  96 #ifdef CONFIG_SPL_MMC_BOOT
  97         mmc_initialize(bd);
  98 #endif
  99         /* relocate environment function pointers etc. */
 100         env_relocate();
 101
 102         i2c_init(CONFIG_SYS_FSL_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 103
 104         gd->ram_size = initdram(0);
 105         puts("Second program loader running in sram...\n");
 106
 107 #ifdef CONFIG_SPL_MMC_BOOT
 108         mmc_boot();
 109 #endif
 110 }