[0074691a] | 1 | /*****************************************************************************/ |
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| 2 | /* |
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| 3 | High Level Debug Port Functions |
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| 4 | |
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| 5 | $Id$ |
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| 6 | |
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| 7 | */ |
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| 8 | /*****************************************************************************/ |
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| 9 | |
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| 10 | #include <stdio.h> |
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| 11 | #include <stdarg.h> |
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| 12 | |
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| 13 | #include "debugport.h" |
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| 14 | #include "m68302scc.h" |
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| 15 | #include "bsp.h" |
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| 16 | |
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| 17 | static int initialised; |
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| 18 | |
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| 19 | void debug_port_initialise(void) |
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| 20 | { |
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| 21 | scc_initialise(CONSOLE_PORT, CONSOLE_BAUD, FALSE); |
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| 22 | #if defined(DEBUG_PORT) |
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| 23 | scc_initialise(DEBUG_PORT, DEBUG_BAUD, FALSE); |
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| 24 | #endif |
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| 25 | } |
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| 26 | |
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| 27 | unsigned char debug_port_status(const unsigned char status) |
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| 28 | { |
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| 29 | if (!initialised) |
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| 30 | { |
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| 31 | initialised = 1; |
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| 32 | debug_port_initialise(); |
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| 33 | } |
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| 34 | |
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| 35 | return scc_status(CONSOLE_PORT, status); |
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| 36 | } |
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| 37 | |
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| 38 | unsigned char debug_port_in(void) |
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| 39 | { |
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| 40 | if (!initialised) |
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| 41 | { |
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| 42 | initialised = 1; |
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| 43 | debug_port_initialise(); |
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| 44 | } |
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| 45 | |
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| 46 | return scc_in(CONSOLE_PORT); |
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| 47 | } |
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| 48 | |
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| 49 | void debug_port_out(const unsigned char character) |
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| 50 | { |
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| 51 | if (!initialised) |
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| 52 | { |
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| 53 | initialised = 1; |
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| 54 | debug_port_initialise(); |
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| 55 | } |
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| 56 | |
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| 57 | scc_out(CONSOLE_PORT, character); |
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| 58 | } |
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| 59 | |
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| 60 | void debug_port_write(const char *buffer) |
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| 61 | { |
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| 62 | while (*buffer != '\0') |
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| 63 | { |
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| 64 | debug_port_out(*buffer++); |
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| 65 | } |
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| 66 | } |
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| 67 | |
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| 68 | void debug_port_write_buffer(const char *buffer, unsigned int size) |
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| 69 | { |
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| 70 | unsigned int count; |
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| 71 | for (count = 0; count < size; count++) |
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| 72 | { |
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| 73 | debug_port_out(buffer[count]); |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | void debug_port_write_hex_uint(const unsigned int value) |
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| 78 | { |
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| 79 | unsigned int bits = sizeof(value) * 8; |
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| 80 | unsigned char c; |
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| 81 | |
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| 82 | do |
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| 83 | { |
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| 84 | bits -= 4; |
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| 85 | c = (unsigned char) ((value >> bits) & 0x0F); |
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| 86 | if (c < 10) |
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| 87 | { |
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| 88 | c += '0'; |
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| 89 | } |
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| 90 | else |
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| 91 | { |
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| 92 | c += 'a' - 10; |
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| 93 | } |
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| 94 | debug_port_out((char) c); |
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| 95 | } |
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| 96 | while (bits); |
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| 97 | } |
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| 98 | |
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| 99 | void debug_port_write_hex_ulong(const unsigned long value) |
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| 100 | { |
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| 101 | unsigned int bits = sizeof(value) * 8; |
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| 102 | unsigned char c; |
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| 103 | |
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| 104 | do |
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| 105 | { |
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| 106 | bits -= 4; |
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| 107 | c = (unsigned char) ((value >> bits) & 0x0F); |
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| 108 | if (c < 10) |
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| 109 | { |
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| 110 | c += '0'; |
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| 111 | } |
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| 112 | else |
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| 113 | { |
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| 114 | c += 'a' - 10; |
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| 115 | } |
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| 116 | debug_port_out((char) c); |
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| 117 | } |
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| 118 | while (bits); |
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| 119 | } |
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| 120 | |
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| 121 | #define BUFFER_SIZE (256) |
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| 122 | static char buffer[BUFFER_SIZE]; |
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| 123 | |
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| 124 | void debug_port_printf(const char *format, ...) |
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| 125 | { |
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| 126 | va_list args; |
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| 127 | int written; |
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| 128 | |
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| 129 | /* gain access to the argument list */ |
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| 130 | va_start(args, format); |
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| 131 | |
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| 132 | /* set the trap */ |
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| 133 | buffer[BUFFER_SIZE - 2] = '\xAA'; |
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| 134 | buffer[BUFFER_SIZE - 1] = '\x55'; |
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| 135 | |
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| 136 | /* format the string and send to stdout */ |
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| 137 | written = vsprintf(buffer, format, args); |
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| 138 | |
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| 139 | /* try an trap format buffer overflows */ |
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| 140 | if ((buffer[BUFFER_SIZE - 2] != '\xAA') || |
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| 141 | (buffer[BUFFER_SIZE - 1] != '\x55')) |
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| 142 | { |
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| 143 | debug_port_write("debug port buffer overflow, halting..."); |
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| 144 | DISABLE_WATCHDOG(); |
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| 145 | while (1 == 1); |
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| 146 | } |
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| 147 | |
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| 148 | /* see if an error occurred, if not flush the output buffer */ |
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| 149 | if (written != -1) |
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| 150 | { |
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| 151 | debug_port_write_buffer(buffer, written); |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | void debug_port_banner(void) |
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| 156 | { |
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| 157 | #define CARD_LABEL "ods68302-" #VARIANT |
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| 158 | |
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| 159 | debug_port_write("\n\n\r"); |
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| 160 | debug_port_write(_Copyright_Notice); |
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| 161 | debug_port_write("\n\r " CARD_ID "\n\r"); |
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| 162 | } |
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| 163 | |
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