board/davinci/sonata/sonata.c

   1 /*
   2  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
   3  *
   4  * Parts are shamelessly stolen from various TI sources, original copyright
   5  * follows:
   6  * -----------------------------------------------------------------
   7  *
   8  * Copyright (C) 2004 Texas Instruments.
   9  *
  10  * ----------------------------------------------------------------------------
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  * ----------------------------------------------------------------------------
  25  */
  26
  27 #include <common.h>
  28 #include <nand.h>
  29 #include <asm/arch/nand_defs.h>
  30 #include <asm/arch/hardware.h>
  31 #include <asm/arch/davinci_misc.h>
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 int board_init(void)
  36 {
  37         /* address of boot parameters */
  38         gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
  39
  40         /* Configure AEMIF pins (although this should be configured at boot time
  41          * with pull-up/pull-down resistors) */
  42         REG(PINMUX0) = 0x00000c1f;
  43
  44         davinci_errata_workarounds();
  45
  46         /* Power on required peripherals */
  47         lpsc_on(DAVINCI_LPSC_GPIO);
  48
  49 #if !defined(CONFIG_SYS_USE_DSPLINK)
  50         /* Powerup the DSP */
  51         dsp_on();
  52 #endif /* CONFIG_SYS_USE_DSPLINK */
  53
  54         davinci_enable_uart0();
  55         davinci_enable_emac();
  56         davinci_enable_i2c();
  57
  58         lpsc_on(DAVINCI_LPSC_TIMER1);
  59         timer_init();
  60
  61         return(0);
  62 }
  63
  64 int misc_init_r(void)
  65 {
  66         uint8_t eeprom_enetaddr[6];
  67
  68         /* Read Ethernet MAC address from EEPROM if available. */
  69         if (dvevm_read_mac_address(eeprom_enetaddr))
  70                 davinci_sync_env_enetaddr(eeprom_enetaddr);
  71
  72         return(0);
  73 }
  74
  75 #ifdef CONFIG_NAND_DAVINCI
  76
  77 /* Set WP on deselect, write enable on select */
  78 static void nand_sonata_select_chip(struct mtd_info *mtd, int chip)
  79 {
  80 #define GPIO_SET_DATA01 0x01c67018
  81 #define GPIO_CLR_DATA01 0x01c6701c
  82 #define GPIO_NAND_WP    (1 << 4)
  83 #ifdef SONATA_BOARD_GPIOWP
  84         if (chip < 0) {
  85                 REG(GPIO_CLR_DATA01) |= GPIO_NAND_WP;
  86         } else {
  87                 REG(GPIO_SET_DATA01) |= GPIO_NAND_WP;
  88         }
  89 #endif
  90 }
  91
  92 int board_nand_init(struct nand_chip *nand)
  93 {
  94         davinci_nand_init(nand);
  95         nand->select_chip = nand_sonata_select_chip;
  96         return 0;
  97 }
  98
  99 #endif /* CONFIG_NAND_DAVINCI */