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

   1 /*
   2  * Authors: Xiangfu Liu <xiangfu.z@gmail.com>
   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
   6  * as published by the Free Software Foundation; either version
   7  * 3 of the License, or (at your option) any later version.
   8  */
   9
  10 #include <common.h>
  11 #include <command.h>
  12 #include <asm/mipsregs.h>
  13 #include <asm/jz4740.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 static void gpio_init(void)
  18 {
  19         /*
  20          * Initialize NAND Flash Pins
  21          */
  22         __gpio_as_nand();
  23
  24         /*
  25          * Initialize SDRAM pins
  26          */
  27         __gpio_as_sdram_32bit();
  28
  29         /*
  30          * Initialize LCD pins
  31          */
  32         __gpio_as_lcd_8bit();
  33
  34         /*
  35          * Initialize MSC pins
  36          */
  37         __gpio_as_msc();
  38
  39         /*
  40          * Initialize Other pins
  41          */
  42         unsigned int i;
  43         for (i = 0; i < 7; i++){
  44                 __gpio_as_input(GPIO_KEYIN_BASE + i);
  45                 __gpio_enable_pull(GPIO_KEYIN_BASE + i);
  46         }
  47
  48         for (i = 0; i < 8; i++) {
  49                 __gpio_as_output(GPIO_KEYOUT_BASE + i);
  50                 __gpio_clear_pin(GPIO_KEYOUT_BASE + i);
  51         }
  52
  53         /*
  54          * Initialize UART0 pins, in Ben NanoNote uart0 and keyin8 use the
  55          * same gpio, init the gpio as uart0 cause a keyboard bug. so for
  56          * end user we disable the uart0
  57          */
  58         if (__gpio_get_pin(GPIO_KEYIN_BASE + 2) == 0){
  59                 /* if pressed [S] */
  60                 printf("[S] pressed, enable UART0\n");
  61                 gd->boot_option = 5;
  62                 __gpio_as_uart0();
  63         } else {
  64                 printf("[S] not pressed, disable UART0\n");
  65                 __gpio_as_input(GPIO_KEYIN_8);
  66                 __gpio_enable_pull(GPIO_KEYIN_8);
  67         }
  68
  69         __gpio_as_output(GPIO_AUDIO_POP);
  70         __gpio_set_pin(GPIO_AUDIO_POP);
  71
  72         __gpio_as_output(GPIO_LCD_CS);
  73         __gpio_clear_pin(GPIO_LCD_CS);
  74
  75         __gpio_as_output(GPIO_AMP_EN);
  76         __gpio_clear_pin(GPIO_AMP_EN);
  77
  78         __gpio_as_output(GPIO_SDPW_EN);
  79         __gpio_disable_pull(GPIO_SDPW_EN);
  80         __gpio_clear_pin(GPIO_SDPW_EN);
  81
  82         __gpio_as_input(GPIO_SD_DETECT);
  83         __gpio_disable_pull(GPIO_SD_DETECT);
  84
  85         __gpio_as_input(GPIO_USB_DETECT);
  86         __gpio_enable_pull(GPIO_USB_DETECT);
  87
  88         if (__gpio_get_pin(GPIO_KEYIN_BASE + 3) == 0) {
  89                 printf("[M] pressed, boot from sd card\n");
  90                 gd->boot_option = 1;
  91         }
  92 }
  93
  94 static void cpm_init(void)
  95 {
  96         __cpm_stop_ipu();
  97         __cpm_stop_cim();
  98         __cpm_stop_i2c();
  99         __cpm_stop_ssi();
 100         __cpm_stop_uart1();
 101         __cpm_stop_sadc();
 102         __cpm_stop_uhc();
 103         __cpm_stop_udc();
 104         __cpm_stop_aic1();
 105 /*      __cpm_stop_aic2();*/
 106 }
 107
 108 void board_early_init(void)
 109 {
 110         gpio_init();
 111         cpm_init();
 112 }
 113
 114 /* U-Boot common routines */
 115
 116 int checkboard (void)
 117 {
 118
 119         printf("Board: Qi LB60 (Ingenic XBurst Jz4740 SoC, Speed %d MHz)\n",
 120                gd->cpu_clk/1000000);
 121
 122         return 0; /* success */
 123 }