board/davinci/dvevm/dvevm.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 <i2c.h>
  29 #include <asm/arch/hardware.h>
  30 #include <asm/arch/emac_defs.h>
  31 #include "../common/psc.h"
  32 #include "../common/misc.h"
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 int board_init(void)
  37 {
  38         /* arch number of the board */
  39         gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_EVM;
  40
  41         /* address of boot parameters */
  42         gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
  43
  44         /* Workaround for TMS320DM6446 errata 1.3.22 */
  45         REG(PSC_SILVER_BULLET) = 0;
  46
  47         /* Power on required peripherals */
  48         lpsc_on(DAVINCI_LPSC_EMAC);
  49         lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER);
  50         lpsc_on(DAVINCI_LPSC_MDIO);
  51         lpsc_on(DAVINCI_LPSC_I2C);
  52         lpsc_on(DAVINCI_LPSC_UART0);
  53         lpsc_on(DAVINCI_LPSC_TIMER1);
  54         lpsc_on(DAVINCI_LPSC_GPIO);
  55
  56 #if !defined(CONFIG_SYS_USE_DSPLINK)
  57         /* Powerup the DSP */
  58         dsp_on();
  59 #endif /* CONFIG_SYS_USE_DSPLINK */
  60
  61         /* Bringup UART0 out of reset */
  62         REG(UART0_PWREMU_MGMT) = 0x0000e003;
  63
  64         /* Enable GIO3.3V cells used for EMAC */
  65         REG(VDD3P3V_PWDN) = 0;
  66
  67         /* Enable UART0 MUX lines */
  68         REG(PINMUX1) |= 1;
  69
  70         /* Enable EMAC and AEMIF pins */
  71         REG(PINMUX0) = 0x80000c1f;
  72
  73         /* Enable I2C pin Mux */
  74         REG(PINMUX1) |= (1 << 7);
  75
  76         /* Set the Bus Priority Register to appropriate value */
  77         REG(VBPR) = 0x20;
  78
  79         timer_init();
  80
  81         return(0);
  82 }
  83
  84 int misc_init_r(void)
  85 {
  86         uint8_t video_mode;
  87         uint8_t eeprom_enetaddr[6];
  88
  89         dv_display_clk_infos();
  90
  91         /* Read Ethernet MAC address from EEPROM if available. */
  92         if (dvevm_read_mac_address(eeprom_enetaddr))
  93                 dv_configure_mac_address(eeprom_enetaddr);
  94
  95         if (!eth_hw_init())
  96                 printf("ethernet init failed!\n");
  97
  98         i2c_read(0x39, 0x00, 1, &video_mode, 1);
  99
 100         setenv("videostd", ((video_mode & 0x80) ? "pal" : "ntsc"));
 101
 102         return(0);
 103 }