package/uboot-xburst/files/board/n516/n516.c

   1 /*
   2  * (C) Copyright 2006
   3  * Ingenic Semiconductor, <jlwei@ingenic.cn>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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 #include <common.h>
  22 #include <command.h>
  23 #include <asm/mipsregs.h>
  24 #include <asm/jz4740.h>
  25 #include <asm/addrspace.h>
  26 #include <asm/cacheops.h>
  27
  28 void _machine_restart(void)
  29 {
  30         __wdt_select_extalclk();
  31         __wdt_select_clk_div64();
  32         __wdt_set_data(100);
  33         __wdt_set_count(0);
  34         __tcu_start_wdt_clock();
  35         __wdt_start();
  36         while(1);
  37
  38 }
  39
  40 static void gpio_init(void)
  41 {
  42
  43         REG_GPIO_PXPES(0) = 0xffffffff;
  44         REG_GPIO_PXPES(1) = 0xffffffff;
  45         REG_GPIO_PXPES(2) = 0xffffffff;
  46         REG_GPIO_PXPES(3) = 0xffffffff;
  47
  48         /*
  49          * Initialize NAND Flash Pins
  50          */
  51         __gpio_as_nand();
  52
  53         /*
  54          * Initialize SDRAM pins
  55          */
  56         __gpio_as_sdram_32bit();
  57
  58         /*
  59          * Initialize UART0 pins
  60          */
  61         __gpio_as_uart0();
  62
  63         /*
  64          * Initialize MSC pins
  65          */
  66         __gpio_as_msc();
  67
  68         /*
  69          * Initialize LCD pins
  70          */
  71         __gpio_as_lcd_16bit();
  72
  73         /*
  74          * Initialize Other pins
  75          */
  76         __gpio_as_output(GPIO_SD_VCC_EN_N);
  77         __gpio_clear_pin(GPIO_SD_VCC_EN_N);
  78
  79         __gpio_as_input(GPIO_SD_CD_N);
  80         __gpio_disable_pull(GPIO_SD_CD_N);
  81
  82         __gpio_as_output(GPIO_DISP_OFF_N);
  83
  84         __gpio_as_output(GPIO_LED_EN);
  85         __gpio_set_pin(GPIO_LED_EN);
  86
  87         __gpio_as_input(127);
  88 }
  89
  90 static void cpm_init(void)
  91 {
  92         __cpm_stop_ipu();
  93         __cpm_stop_cim();
  94         __cpm_stop_i2c();
  95         __cpm_stop_ssi();
  96         __cpm_stop_uart1();
  97         __cpm_stop_sadc();
  98         __cpm_stop_uhc();
  99         __cpm_stop_udc();
 100         __cpm_stop_aic1();
 101         __cpm_stop_aic2();
 102         __cpm_suspend_udcphy();
 103         __cpm_suspend_usbphy();
 104 }
 105
 106 //----------------------------------------------------------------------
 107 // board early init routine
 108
 109 void board_early_init(void)
 110 {
 111         gpio_init();
 112         cpm_init();
 113 }
 114
 115 //----------------------------------------------------------------------
 116 // U-Boot common routines
 117
 118 int checkboard (void)
 119 {
 120         DECLARE_GLOBAL_DATA_PTR;
 121
 122         printf("Board: Hanvon n516 e-book (CPU Speed %d MHz)\n",
 123                gd->cpu_clk/1000000);
 124
 125         return 0; /* success */
 126 }