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/* AT91SAM7 debug function implementation for OpenPCD
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* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <lib_AT91SAM7.h>
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#include <board.h>
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#include <dfu/dbgu.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#define USART_SYS_LEVEL 4
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void AT91F_DBGU_Ready(void)
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{
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while (!(AT91C_BASE_DBGU->DBGU_CSR & AT91C_US_TXEMPTY)) ;
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}
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static void DBGU_irq_handler(void)
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{
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static char value;
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AT91F_DBGU_Get(&value);
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switch (value) {
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case '9':
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AT91F_DBGU_Printk("Resetting SAM7\n\r");
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AT91F_RSTSoftReset(AT91C_BASE_RSTC, AT91C_RSTC_PROCRST|
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AT91C_RSTC_PERRST|AT91C_RSTC_EXTRST);
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break;
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default:
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AT91F_DBGU_Printk("\n\r");
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}
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}
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void AT91F_DBGU_Init(void)
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{
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/* Open PIO for DBGU */
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AT91F_DBGU_CfgPIO();
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/* Enable Transmitter & receivier */
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((AT91PS_USART) AT91C_BASE_DBGU)->US_CR =
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AT91C_US_RSTTX | AT91C_US_RSTRX;
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/* Configure DBGU */
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AT91F_US_Configure(AT91C_BASE_DBGU,
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MCK, AT91C_US_ASYNC_MODE,
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AT91C_DBGU_BAUD, 0);
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/* Enable Transmitter & receivier */
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((AT91PS_USART) AT91C_BASE_DBGU)->US_CR =
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AT91C_US_RXEN | AT91C_US_TXEN;
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/* Enable USART IT error and AT91C_US_ENDRX */
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AT91F_US_EnableIt((AT91PS_USART) AT91C_BASE_DBGU, AT91C_US_RXRDY);
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/* open interrupt */
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AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_SYS, USART_SYS_LEVEL,
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AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL,
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DBGU_irq_handler);
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AT91F_AIC_EnableIt(AT91C_BASE_AIC, AT91C_ID_SYS);
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}
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void AT91F_DBGU_Printk(char *buffer)
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{
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while (*buffer != '\0') {
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while (!AT91F_US_TxReady((AT91PS_USART) AT91C_BASE_DBGU)) ;
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AT91F_US_PutChar((AT91PS_USART) AT91C_BASE_DBGU, *buffer++);
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}
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}
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int AT91F_DBGU_Get(char *val)
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{
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if ((AT91F_US_RxReady((AT91PS_USART) AT91C_BASE_DBGU)) == 0)
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return (0);
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else {
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*val = AT91F_US_GetChar((AT91PS_USART) AT91C_BASE_DBGU);
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return (-1);
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}
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}
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#ifdef DEBUG
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void AT91F_DBGU_Frame(char *buffer)
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{
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unsigned char len;
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for (len = 0; buffer[len] != '\0'; len++) { }
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AT91F_US_SendFrame((AT91PS_USART) AT91C_BASE_DBGU,
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(unsigned char *)buffer, len, 0, 0);
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}
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const char *
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hexdump(const void *data, unsigned int len)
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{
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static char string[256];
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unsigned char *d = (unsigned char *) data;
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unsigned int i, left;
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string[0] = '\0';
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left = sizeof(string);
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for (i = 0; len--; i += 3) {
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if (i >= sizeof(string) -4)
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break;
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snprintf(string+i, 4, " %02x", *d++);
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}
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return string;
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}
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static char dbg_buf[2048];
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void debugp(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vsnprintf(dbg_buf, sizeof(dbg_buf)-1, format, ap);
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va_end(ap);
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dbg_buf[sizeof(dbg_buf)-1] = '\0';
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//AT91F_DBGU_Frame(dbg_buf);
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AT91F_DBGU_Printk(dbg_buf);
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}
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#endif
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