272 lines
6.9 KiB
C
272 lines
6.9 KiB
C
/* OpenPICC Main Program
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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 <errno.h>
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#include <include/lib_AT91SAM7.h>
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#include <include/openpcd.h>
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#include <os/dbgu.h>
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#include <os/led.h>
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#include <os/pcd_enumerate.h>
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#include <os/usb_handler.h>
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#include "../openpcd.h"
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#include "../simtrace.h"
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#include <os/main.h>
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#include <os/pio_irq.h>
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#include <simtrace/tc_etu.h>
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#include <simtrace/iso7816_uart.h>
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#include <simtrace/sim_switch.h>
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#include <simtrace_usb.h>
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enum simtrace_md {
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SIMTRACE_MD_OFF,
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SIMTRACE_MD_SNIFFER,
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SIMTRACE_MD_MITM,
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};
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#define UART1_PINS (SIMTRACE_PIO_nRST_PH | \
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SIMTRACE_PIO_CLK_PH | \
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SIMTRACE_PIO_CLK_PH_T | \
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SIMTRACE_PIO_IO_PH_RX | \
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SIMTRACE_PIO_IO_PH_TX)
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#define UART0_PINS (SIMTRACE_PIO_nRST | \
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SIMTRACE_PIO_CLK | \
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SIMTRACE_PIO_CLK_T | \
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SIMTRACE_PIO_IO | \
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SIMTRACE_PIO_IO_T)
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enum simtrace_power_mode {
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SIMTRACE_PWR_OFF,
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SIMTRACE_PWR_PASS,
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SIMTRACE_PWR_LDO
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};
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void simtrace_set_power(enum simtrace_power_mode mode)
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{
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switch (mode) {
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case SIMTRACE_PWR_PASS:
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/* switch VCC_SIM pin into output mode, as in the first
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* generation prototype we use it directly to supply Vcc
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* to the SIM. Pin unused in v1.0(p) and v1.1p */
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
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/* v1.0/1.1: pass-throguh power from the reader/phone (FPC) */
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AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
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AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
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break;
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case SIMTRACE_PWR_LDO:
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/* switch VCC_SIM pin into output mode, as in the first
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* generation prototype we use it directly to supply Vcc
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* to the SIM. Pin unused in v1.0(p) and v1.1p */
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
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/* v1.0/1.1: power from the internal 3.3V LDO */
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
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break;
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default:
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case SIMTRACE_PWR_OFF:
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/* switch VCC_SIM pin into output mode, as in the first
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* generation prototype we use it directly to supply Vcc
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* to the SIM. Pin unused in v1.0(p) and v1.1p */
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AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
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/* switch all power paths off */
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AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
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AT91F_PIO_SetOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
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break;
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}
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}
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static void simtrace_set_mode(enum simtrace_md mode)
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{
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switch (mode) {
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case SIMTRACE_MD_SNIFFER:
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DEBUGPCR("MODE: SNIFFER\n");
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/* switch UART1 pins to input, no pull-up */
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AT91F_PIO_CfgInput(AT91C_BASE_PIOA, UART1_PINS);
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AT91F_PIO_CfgPullupDis(AT91C_BASE_PIOA, UART1_PINS);
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/* switch UART0 pins to 'ISO7816 card mode' */
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AT91F_PIO_CfgInput(AT91C_BASE_PIOA, UART0_PINS);
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AT91F_PIO_CfgPullupDis(AT91C_BASE_PIOA, UART0_PINS);
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AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA, SIMTRACE_PIO_IO, SIMTRACE_PIO_CLK);
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sim_switch_mode(1, 1);
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break;
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case SIMTRACE_MD_MITM:
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DEBUGPCR("MODE: MITM\n");
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/* switch UART1 pins to 'ISO7816 card mode' */
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/* switch UART0 pins to 'ISO7816 reader mode' */
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sim_switch_mode(0, 0);
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break;
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}
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}
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static int simtrace_usb_in(struct req_ctx *rctx)
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{
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struct openpcd_hdr *poh = (struct openpcd_hdr *) &rctx->data[0];
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struct simtrace_stats *stats_in;
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struct simtrace_stats *stats = (struct simtrace_stats *) poh->data;
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switch (poh->cmd) {
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case SIMTRACE_MSGT_STATS:
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stats_in = iso_uart_stats_get();
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memcpy(stats, stats_in, sizeof(*stats));
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req_ctx_set_state(rctx, RCTX_STATE_UDP_EP2_PENDING);
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break;
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default:
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req_ctx_set_state(rctx, RCTX_STATE_FREE);
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break;
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}
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return 0;
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}
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static volatile unsigned spuirq_pc, spuirq_count = 0;
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static void check_spurious_irq()
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{
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static unsigned last_count = 0;
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if (last_count != spuirq_count) {
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DEBUGPCR("SPURRIOUS IRQ %i [Old PC = %08X]", spuirq_count, spuirq_pc);
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last_count = spuirq_count;
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}
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}
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static void custom_spurious_handler(unsigned previous_pc)
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{
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unsigned flags;
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local_irq_save(flags);
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spuirq_pc = previous_pc;
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spuirq_count++;
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local_irq_restore(flags);
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}
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static void custom_spurious_entry(void)
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{
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register unsigned *previous_pc asm("r0");
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asm("ADD R1, SP, #16; LDR R0, [R1]");
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custom_spurious_handler(previous_pc);
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}
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void _init_func(void)
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{
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AT91C_BASE_AIC->AIC_SPU = (int)custom_spurious_entry;
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/* low-level hardware initialization */
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pio_irq_init();
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iso_uart_init();
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tc_etu_init();
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sim_switch_init();
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usbtest_init();
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usb_hdlr_register(&simtrace_usb_in, OPENPCD_CMD_CLS_ADC);
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/* high-level protocol */
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//opicc_usbapi_init();
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led_switch(1, 0);
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led_switch(2, 1);
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AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_VCC_SIM);
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AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_nPWRFWD);
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AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, SIMTRACE_PIO_SIM_LDOEN);
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/* default: use local LDO to supply power */
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simtrace_set_power(SIMTRACE_PWR_LDO);
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iso_uart_rx_mode();
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simtrace_set_mode(SIMTRACE_MD_SNIFFER);
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}
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static void help(void)
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{
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DEBUGPCR("r: iso uart Rx mode\r\n"
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"c: toggle clock master/slave\r\n"
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"l: set nRST to low (active)\r\n"
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"h: set nRST to high (inactive)\r\n"
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"o: set nRST to input\r\n"
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"t: ISO UART statistics\r\n"
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"s: disconnect SIM bus switch\r\n"
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"S: connect SIM bus switch\r\n");
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}
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int _main_dbgu(char key)
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{
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static int i = 0;
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DEBUGPCRF("main_dbgu");
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switch (key) {
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case 's':
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simtrace_set_mode(SIMTRACE_MD_MITM);
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break;
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case 'S':
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simtrace_set_mode(SIMTRACE_MD_SNIFFER);
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break;
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case 't':
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iso_uart_stats_dump();
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break;
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case 'r':
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iso_uart_rx_mode();
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break;
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case 'c':
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iso_uart_clk_master(i++ & 1);
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break;
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case 'l':
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iso_uart_rst(0);
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break;
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case 'h':
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iso_uart_rst(1);
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break;
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case 'o':
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iso_uart_rst(2);
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break;
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case 'd':
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iso_uart_dump();
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break;
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case '?':
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help();
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break;
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}
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return -EINVAL;
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}
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void _main_func(void)
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{
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static unsigned loopLow = 0, loopHigh = 0;
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/* first we try to get rid of pending to-be-sent stuff */
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usb_out_process();
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/* next we deal with incoming requests from USB EP1 (OUT) */
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usb_in_process();
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udp_unthrottle();
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if ((loopLow & 0xFFFF) == 0) {
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DEBUGPCR("Heart beat %08X", loopHigh++);
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}
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if ((loopLow & 0x3F) == 0) {
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iso_uart_idleflush();
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}
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loopLow++;
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iso_uart_report_errors();
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check_spurious_irq();
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}
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