firmware/target/arm/as3525/debug-as3525.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright © 2008 Rafaël Carré
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <stdbool.h>
  23 #include "debug-target.h"
  24 #include "button.h"
  25 #include "lcd.h"
  26 #include "font.h"
  27 #include "system.h"
  28 #include "sprintf.h"
  29 #include "cpu.h"
  30
  31 #define _DEBUG_PRINTF(a,varargs...) \
  32     snprintf(buf, sizeof(buf), (a), ##varargs); lcd_puts(0,line++,buf)
  33
  34 #define ON "Enabled"
  35 #define OFF "Enabled"
  36
  37 #define CP15_MMU (1<<0)            /* mmu off/on */
  38 #define CP15_DC  (1<<2)            /* dcache off/on */
  39 #define CP15_IC  (1<<12)           /* icache off/on */
  40
  41 /* FIXME: target tree is including ./debug-target.h rather than the one in
  42  * sansa-fuze/, even though deps contains the correct one
  43  * if I put the below into a sansa-fuze/debug-target.h, it doesn't work*/
  44 #if defined(SANSA_FUZE) || defined(SANSA_E200V2)
  45 #define DEBUG_DBOP
  46 short button_dbop_data(void);
  47 #endif
  48
  49 static unsigned read_cp15 (void)
  50 {
  51     unsigned value;
  52
  53     asm volatile (
  54             "mrc p15, 0, %0, c1, c0, 0   @ read control reg\n":"=r"
  55             (value)::"memory"
  56     );
  57     return (value);
  58 }
  59
  60 bool __dbg_hw_info(void)
  61 {
  62     return false;
  63 }
  64
  65 bool __dbg_ports(void)
  66 {
  67     char buf[50];
  68     int line;
  69
  70     lcd_clear_display();
  71     lcd_setfont(FONT_SYSFIXED);
  72
  73     while(1)
  74     {
  75         line = 0;
  76         _DEBUG_PRINTF("[GPIO Values and Directions]");
  77         _DEBUG_PRINTF("GPIOA: %2x DIR: %2x", GPIOA_DATA, GPIOA_DIR);
  78         _DEBUG_PRINTF("GPIOB: %2x DIR: %2x", GPIOB_DATA, GPIOB_DIR);
  79         _DEBUG_PRINTF("GPIOC: %2x DIR: %2x", GPIOC_DATA, GPIOC_DIR);
  80         _DEBUG_PRINTF("GPIOD: %2x DIR: %2x", GPIOD_DATA, GPIOD_DIR);
  81 #ifdef DEBUG_DBOP
  82         line++;
  83         _DEBUG_PRINTF("[DBOP_DIN]");
  84         _DEBUG_PRINTF("DBOP_DIN: %4x", button_dbop_data());
  85 #endif
  86         line++;
  87         _DEBUG_PRINTF("[CP15]");
  88         _DEBUG_PRINTF("CP15: 0x%8x", read_cp15());
  89         lcd_update();
  90         if (button_get_w_tmo(HZ/10) == (DEBUG_CANCEL|BUTTON_REL))
  91             break;
  92     }
  93     lcd_setfont(FONT_UI);
  94     return false;
  95 }