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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <boot/boot.h>
#define STATUS_NOMSG 0
#define STATUS_OKAY 1
#define STATUS_FAIL 2
#define STATUS_PRINT 3
void jtag_hook();
volatile unsigned _jtag_cmd = 0;
volatile unsigned _jtag_msg = 0;
unsigned char _jtag_cmd_buffer[128];
unsigned char _jtag_msg_buffer[128];
volatile unsigned _jtag_arg0 = 0;
volatile unsigned _jtag_arg1 = 0;
volatile unsigned _jtag_arg2 = 0;
static void jtag_msg(unsigned status, const char *msg)
{
unsigned char *out = _jtag_msg_buffer;
while((*out++ = *msg++) != 0) ;
_jtag_msg = status;
do {
jtag_hook();
} while(_jtag_msg != 0);
}
void jtag_okay(const char *msg)
{
if(msg == 0) msg = "OKAY";
jtag_msg(STATUS_OKAY, msg);
}
void jtag_fail(const char *msg)
{
if(msg == 0) msg = "FAIL";
jtag_msg(STATUS_FAIL, msg);
}
int jtag_cmd_pending()
{
jtag_hook();
return (int) _jtag_cmd;
}
void jtag_cmd_loop(void (*do_cmd)(const char *, unsigned, unsigned, unsigned))
{
unsigned n;
for(;;) {
if(jtag_cmd_pending()){
do_cmd((const char*) _jtag_cmd_buffer, _jtag_arg0, _jtag_arg1, _jtag_arg2);
for(n = 0; n < 256; n++) _jtag_cmd_buffer[n] = 0;
_jtag_arg0 = 0;
_jtag_arg1 = 0;
_jtag_arg2 = 0;
_jtag_cmd = 0;
}
}
}
static char jtag_putc_buffer[128];
static unsigned jtag_putc_count = 0;
static void jtag_push_buffer(void)
{
jtag_putc_buffer[jtag_putc_count] = 0;
jtag_putc_count = 0;
jtag_msg(STATUS_PRINT, jtag_putc_buffer);
}
void jtag_dputc(unsigned c)
{
if((c < 32) || (c > 127)) {
if(c == '\n') {
jtag_push_buffer();
}
return;
}
jtag_putc_buffer[jtag_putc_count++] = c;
if(jtag_putc_count == 127) {
jtag_push_buffer();
}
}
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