board/isee/igep00x0/common.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <common.h>
   4 #include <twl4030.h>
   5 #include <asm/global_data.h>
   6 #include <asm/io.h>
   7 #include <asm/omap_mmc.h>
   8 #include <asm/arch/mux.h>
   9 #include <asm/arch/sys_proto.h>
  10 #include <jffs2/load_kernel.h>
  11 #include <linux/delay.h>
  12 #include <linux/mtd/rawnand.h>
  13 #include "igep00x0.h"
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 /*
  18  * Routine: set_muxconf_regs
  19  * Description: Setting up the configuration Mux registers specific to the
  20  *              hardware. Many pins need to be moved from protect to primary
  21  *              mode.
  22  */
  23 void set_muxconf_regs(void)
  24 {
  25         MUX_DEFAULT();
  26 }
  27
  28 /*
  29  * Routine: board_init
  30  * Description: Early hardware init.
  31  */
  32 int board_init(void)
  33 {
  34         int loops = 100;
  35
  36         /* find out flash memory type, assume NAND first */
  37         gpmc_cs0_flash = MTD_DEV_TYPE_NAND;
  38         gpmc_init();
  39
  40         /* Issue a RESET and then READID */
  41         writeb(NAND_CMD_RESET, &gpmc_cfg->cs[0].nand_cmd);
  42         writeb(NAND_CMD_STATUS, &gpmc_cfg->cs[0].nand_cmd);
  43         while ((readl(&gpmc_cfg->cs[0].nand_dat) & NAND_STATUS_READY)
  44                                                 != NAND_STATUS_READY) {
  45                 udelay(1);
  46                 if (--loops == 0) {
  47                         gpmc_cs0_flash = MTD_DEV_TYPE_ONENAND;
  48                         gpmc_init();    /* reinitialize for OneNAND */
  49                         break;
  50                 }
  51         }
  52
  53         /* boot param addr */
  54         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  55
  56         return 0;
  57 }
  58
  59 #if defined(CONFIG_MMC)
  60 int board_mmc_init(struct bd_info *bis)
  61 {
  62         return omap_mmc_init(0, 0, 0, -1, -1);
  63 }
  64
  65 void board_mmc_power_init(void)
  66 {
  67         twl4030_power_mmc_init(0);
  68 }
  69 #endif