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/* OpenPICC Main Program
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <errno.h>
#include <include/lib_AT91SAM7.h>
#include <include/openpcd.h>
#include <os/dbgu.h>
#include <os/led.h>
#include <os/pcd_enumerate.h>
#include <os/usb_handler.h>
#include "../openpcd.h"
#include "../simtrace.h"
#include <os/main.h>
#include <os/pio_irq.h>
#include <simtrace/tc_etu.h>
#include <simtrace/iso7816_uart.h>
#include <simtrace/sim_switch.h>
#include <simtrace_usb.h>
enum simtrace_md {
SIMTRACE_MD_OFF,
SIMTRACE_MD_SNIFFER,
SIMTRACE_MD_MITM,
};
#define UART1_PINS (SIMTRACE_PIO_nRST_PH | \
SIMTRACE_PIO_CLK_PH | \
SIMTRACE_PIO_CLK_PH_T | \
SIMTRACE_PIO_IO_PH_RX | \
SIMTRACE_PIO_IO_PH_TX)
#define UART0_PINS (SIMTRACE_PIO_nRST | \
SIMTRACE_PIO_CLK | \
SIMTRACE_PIO_CLK_T | \
SIMTRACE_PIO_IO | \
SIMTRACE_PIO_IO_T)
enum simtrace_power_mode {
SIMTRACE_PWR_OFF,
SIMTRACE_PWR_PASS,
SIMTRACE_PWR_LDO
};
void simtrace_set_power(enum simtrace_power_mode mode)
{
switch (mode) {
case SIMTRACE_PWR_PASS:
/* switch VCC_SIM pin into output mode, as in the first
* generation prototype we use it directly to supply Vcc
* to the SIM. Pin unused in v1.0(p) and v1.1p */
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
/* v1.0/1.1: pass-throguh power from the reader/phone (FPC) */
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
break;
case SIMTRACE_PWR_LDO:
/* switch VCC_SIM pin into output mode, as in the first
* generation prototype we use it directly to supply Vcc
* to the SIM. Pin unused in v1.0(p) and v1.1p */
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
/* v1.0/1.1: power from the internal 3.3V LDO */
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
break;
default:
case SIMTRACE_PWR_OFF:
/* switch VCC_SIM pin into output mode, as in the first
* generation prototype we use it directly to supply Vcc
* to the SIM. Pin unused in v1.0(p) and v1.1p */
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
/* switch all power paths off */
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
break;
}
}
static void simtrace_set_mode(enum simtrace_md mode)
{
switch (mode) {
case SIMTRACE_MD_SNIFFER:
DEBUGPCR("MODE: SNIFFER\n");
/* switch UART1 pins to input, no pull-up */
AT91F_PIO_CfgInput(AT91C_BASE_PIOA, UART1_PINS);
AT91F_PIO_CfgPullupDis(AT91C_BASE_PIOA, UART1_PINS);
/* switch UART0 pins to 'ISO7816 card mode' */
AT91F_PIO_CfgInput(AT91C_BASE_PIOA, UART0_PINS);
AT91F_PIO_CfgPullupDis(AT91C_BASE_PIOA, UART0_PINS);
AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA, SIMTRACE_PIO_IO, SIMTRACE_PIO_CLK);
sim_switch_mode(1, 1);
break;
case SIMTRACE_MD_MITM:
DEBUGPCR("MODE: MITM\n");
/* switch UART1 pins to 'ISO7816 card mode' */
/* switch UART0 pins to 'ISO7816 reader mode' */
sim_switch_mode(0, 0);
break;
}
}
static int simtrace_usb_in(struct req_ctx *rctx)
{
struct openpcd_hdr *poh = (struct openpcd_hdr *) &rctx->data[0];
struct simtrace_stats *stats_in;
struct simtrace_stats *stats = (struct simtrace_stats *) poh->data;
switch (poh->cmd) {
case SIMTRACE_MSGT_STATS:
stats_in = iso_uart_stats_get();
memcpy(stats, stats_in, sizeof(*stats));
req_ctx_set_state(rctx, RCTX_STATE_UDP_EP2_PENDING);
break;
default:
req_ctx_set_state(rctx, RCTX_STATE_FREE);
break;
}
return 0;
}
static volatile unsigned spuirq_pc, spuirq_count = 0;
static void check_spurious_irq()
{
static unsigned last_count = 0;
if (last_count != spuirq_count) {
DEBUGPCR("SPURRIOUS IRQ %i [Old PC = %08X]", spuirq_count, spuirq_pc);
last_count = spuirq_count;
}
}
static void custom_spurious_handler(unsigned previous_pc)
{
unsigned flags;
local_irq_save(flags);
spuirq_pc = previous_pc;
spuirq_count++;
local_irq_restore(flags);
}
static void custom_spurious_entry(void)
{
register unsigned *previous_pc asm("r0");
asm("ADD R1, SP, #16; LDR R0, [R1]");
custom_spurious_handler(previous_pc);
}
void _init_func(void)
{
AT91C_BASE_AIC->AIC_SPU = (int)custom_spurious_entry;
/* low-level hardware initialization */
pio_irq_init();
iso_uart_init();
tc_etu_init();
sim_switch_init();
usbtest_init();
usb_hdlr_register(&simtrace_usb_in, OPENPCD_CMD_CLS_ADC);
/* high-level protocol */
//opicc_usbapi_init();
led_switch(1, 0);
led_switch(2, 1);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
/* default: use local LDO to supply power */
simtrace_set_power(SIMTRACE_PWR_LDO);
iso_uart_rx_mode();
simtrace_set_mode(SIMTRACE_MD_SNIFFER);
}
static void help(void)
{
DEBUGPCR("r: iso uart Rx mode\r\n"
"c: toggle clock master/slave\r\n"
"l: set nRST to low (active)\r\n"
"h: set nRST to high (inactive)\r\n"
"o: set nRST to input\r\n"
"t: ISO UART statistics\r\n"
"s: disconnect SIM bus switch\r\n"
"S: connect SIM bus switch\r\n");
}
int _main_dbgu(char key)
{
static int i = 0;
DEBUGPCRF("main_dbgu");
switch (key) {
case 's':
simtrace_set_mode(SIMTRACE_MD_MITM);
break;
case 'S':
simtrace_set_mode(SIMTRACE_MD_SNIFFER);
break;
case 't':
iso_uart_stats_dump();
break;
case 'r':
iso_uart_rx_mode();
break;
case 'c':
iso_uart_clk_master(i++ & 1);
break;
case 'l':
iso_uart_rst(0);
break;
case 'h':
iso_uart_rst(1);
break;
case 'o':
iso_uart_rst(2);
break;
case 'd':
iso_uart_dump();
break;
case '?':
help();
break;
}
return -EINVAL;
}
void _main_func(void)
{
static unsigned loopLow = 0, loopHigh = 0;
/* first we try to get rid of pending to-be-sent stuff */
usb_out_process();
/* next we deal with incoming requests from USB EP1 (OUT) */
usb_in_process();
udp_unthrottle();
if ((loopLow & 0xFFFF) == 0) {
DEBUGPCR("Heart beat %08X", loopHigh++);
}
if ((loopLow & 0x3F) == 0) {
iso_uart_idleflush();
}
loopLow++;
iso_uart_report_errors();
check_spurious_irq();
}
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