mirror of
https://salsa.debian.org/gnuk-team/gnuk/gnuk.git
synced 2024-09-21 11:20:08 +00:00
623 lines
13 KiB
C
623 lines
13 KiB
C
/*
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* main.c - main routine of Gnuk
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*
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* Copyright (C) 2010, 2011, 2012, 2013 Free Software Initiative of Japan
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* Author: NIIBE Yutaka <gniibe@fsij.org>
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*
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* This file is a part of Gnuk, a GnuPG USB Token implementation.
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*
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* Gnuk is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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||
* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Gnuk is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* 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, see <http://www.gnu.org/licenses/>.
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*
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||
*/
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#include <stdint.h>
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#include <string.h>
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#include <chopstx.h>
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#include <eventflag.h>
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#include "config.h"
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#include "sys.h"
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#include "adc.h"
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#include "gnuk.h"
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#include "usb_lld.h"
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#include "usb-cdc.h"
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#include "random.h"
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#include "stm32f103.h"
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|
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#ifdef DEBUG
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#include "debug.h"
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|
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struct stdout stdout;
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|
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static void
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||
stdout_init (void)
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{
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chopstx_mutex_init (&stdout.m);
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chopstx_mutex_init (&stdout.m_dev);
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chopstx_cond_init (&stdout.cond_dev);
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stdout.connected = 0;
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}
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||
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void
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||
_write (const char *s, int len)
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{
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int packet_len;
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||
|
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if (len == 0)
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return;
|
||
|
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chopstx_mutex_lock (&stdout.m);
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chopstx_mutex_lock (&stdout.m_dev);
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if (!stdout.connected)
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chopstx_cond_wait (&stdout.cond_dev, &stdout.m_dev);
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chopstx_mutex_unlock (&stdout.m_dev);
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do
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{
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packet_len =
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(len < VIRTUAL_COM_PORT_DATA_SIZE) ? len : VIRTUAL_COM_PORT_DATA_SIZE;
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chopstx_mutex_lock (&stdout.m_dev);
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usb_lld_write (ENDP3, s, packet_len);
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chopstx_cond_wait (&stdout.cond_dev, &stdout.m_dev);
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chopstx_mutex_unlock (&stdout.m_dev);
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s += packet_len;
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len -= packet_len;
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}
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/* Send a Zero-Length-Packet if the last packet is full size. */
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while (len != 0 || packet_len == VIRTUAL_COM_PORT_DATA_SIZE);
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chopstx_mutex_unlock (&stdout.m);
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}
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void
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EP3_IN_Callback (void)
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{
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chopstx_mutex_lock (&stdout.m_dev);
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chopstx_cond_signal (&stdout.cond_dev);
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chopstx_mutex_unlock (&stdout.m_dev);
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}
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void
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EP5_OUT_Callback (void)
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{
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chopstx_mutex_lock (&stdout.m_dev);
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usb_lld_rx_enable (ENDP5);
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chopstx_mutex_unlock (&stdout.m_dev);
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}
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#else
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void
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_write (const char *s, int size)
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{
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(void)s;
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(void)size;
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}
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#endif
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extern void *USBthread (void *arg);
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/*
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* main thread does 1-bit LED display output
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*/
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#define MAIN_TIMEOUT_INTERVAL (5000*1000)
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#define LED_TIMEOUT_INTERVAL (75*1000)
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#define LED_TIMEOUT_ZERO (25*1000)
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#define LED_TIMEOUT_ONE (100*1000)
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#define LED_TIMEOUT_STOP (200*1000)
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#define ID_OFFSET (2+SERIALNO_STR_LEN*2)
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static void
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device_initialize_once (void)
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{
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const uint8_t *p = &gnukStringSerial[ID_OFFSET];
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if (p[0] == 0xff && p[1] == 0xff && p[2] == 0xff && p[3] == 0xff)
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{
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/*
|
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* This is the first time invocation.
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* Setup serial number by unique device ID.
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*/
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const uint8_t *u = unique_device_id ();
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int i;
|
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|
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for (i = 0; i < 4; i++)
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{
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uint8_t b = u[i];
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uint8_t nibble;
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|
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nibble = (b >> 4);
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nibble += (nibble >= 10 ? ('A' - 10) : '0');
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flash_put_data_internal (&p[i*4], nibble);
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nibble = (b & 0x0f);
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nibble += (nibble >= 10 ? ('A' - 10) : '0');
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flash_put_data_internal (&p[i*4+2], nibble);
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}
|
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}
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}
|
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|
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|
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static volatile uint8_t fatal_code;
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static struct eventflag led_event;
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static void display_fatal_code (void)
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{
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while (1)
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{
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set_led (1);
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chopstx_usec_wait (LED_TIMEOUT_ZERO);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_INTERVAL);
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set_led (1);
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chopstx_usec_wait (LED_TIMEOUT_ZERO);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_INTERVAL);
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set_led (1);
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chopstx_usec_wait (LED_TIMEOUT_ZERO);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_STOP);
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set_led (1);
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if (fatal_code & 1)
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chopstx_usec_wait (LED_TIMEOUT_ONE);
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else
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chopstx_usec_wait (LED_TIMEOUT_ZERO);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_INTERVAL);
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set_led (1);
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if (fatal_code & 2)
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chopstx_usec_wait (LED_TIMEOUT_ONE);
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else
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chopstx_usec_wait (LED_TIMEOUT_ZERO);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_INTERVAL);
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set_led (1);
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chopstx_usec_wait (LED_TIMEOUT_STOP);
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set_led (0);
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chopstx_usec_wait (LED_TIMEOUT_INTERVAL*10);
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}
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}
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static uint8_t led_inverted;
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static eventmask_t emit_led (int on_time, int off_time)
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{
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eventmask_t m;
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set_led (!led_inverted);
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m = eventflag_wait_timeout (&led_event, on_time);
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set_led (led_inverted);
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if (m) return m;
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if ((m = eventflag_wait_timeout (&led_event, off_time)))
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return m;
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return 0;
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}
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static eventmask_t display_status_code (void)
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{
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enum icc_state icc_state;
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eventmask_t m;
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if (icc_state_p == NULL)
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icc_state = ICC_STATE_START;
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else
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icc_state = *icc_state_p;
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if (icc_state == ICC_STATE_START)
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return emit_led (LED_TIMEOUT_ONE, LED_TIMEOUT_STOP);
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else
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/* GPGthread running */
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{
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if ((m = emit_led ((auth_status & AC_ADMIN_AUTHORIZED)?
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LED_TIMEOUT_ONE : LED_TIMEOUT_ZERO,
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LED_TIMEOUT_INTERVAL)))
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return m;
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if ((m = emit_led ((auth_status & AC_OTHER_AUTHORIZED)?
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LED_TIMEOUT_ONE : LED_TIMEOUT_ZERO,
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LED_TIMEOUT_INTERVAL)))
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return m;
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if ((m = emit_led ((auth_status & AC_PSO_CDS_AUTHORIZED)?
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LED_TIMEOUT_ONE : LED_TIMEOUT_ZERO,
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LED_TIMEOUT_INTERVAL)))
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return m;
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if (icc_state == ICC_STATE_WAIT)
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{
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if ((m = eventflag_wait_timeout (&led_event, LED_TIMEOUT_STOP * 2)))
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return m;
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}
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else
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{
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if ((m = eventflag_wait_timeout (&led_event, LED_TIMEOUT_INTERVAL)))
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return m;
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if ((m = emit_led (icc_state == ICC_STATE_RECEIVE?
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LED_TIMEOUT_ONE : LED_TIMEOUT_ZERO,
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LED_TIMEOUT_STOP)))
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return m;
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}
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return 0;
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}
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}
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void
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led_blink (int spec)
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{
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eventflag_signal (&led_event, spec);
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}
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/*
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* In Gnuk 1.0.[12], reGNUal was not relocatable.
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* Now, it's relocatable, but we need to calculate its entry address
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* based on it's pre-defined address.
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*/
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#define REGNUAL_START_ADDRESS_COMPATIBLE 0x20001400
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static uint32_t
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calculate_regnual_entry_address (const uint8_t *addr)
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{
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const uint8_t *p = addr + 4;
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uint32_t v = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24);
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v -= REGNUAL_START_ADDRESS_COMPATIBLE;
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v += (uint32_t)addr;
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return v;
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}
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extern uint8_t __process1_stack_base__, __process1_stack_size__;
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extern uint8_t __process4_stack_base__, __process4_stack_size__;
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const uint32_t __stackaddr_ccid = (uint32_t)&__process1_stack_base__;
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const size_t __stacksize_ccid = (size_t)&__process1_stack_size__;
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const uint32_t __stackaddr_usb = (uint32_t)&__process4_stack_base__;
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const size_t __stacksize_usb = (size_t)&__process4_stack_size__;
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#define PRIO_CCID 3
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#define PRIO_USB 4
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extern void *usb_intr (void *arg);
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static void gnuk_malloc_init (void);
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|
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|
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static uint32_t bDeviceState;
|
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|
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/*
|
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* Entry point.
|
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*
|
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* NOTE: the main function is already a thread in the system on entry.
|
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* See the hwinit1_common function.
|
||
*/
|
||
int
|
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main (int argc, char *argv[])
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{
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unsigned int count = 0;
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uint32_t entry;
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chopstx_t usb_thd;
|
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chopstx_t ccid_thd;
|
||
|
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(void)argc;
|
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(void)argv;
|
||
|
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gnuk_malloc_init ();
|
||
|
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flash_unlock ();
|
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device_initialize_once ();
|
||
|
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adc_init ();
|
||
|
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eventflag_init (&led_event, chopstx_main);
|
||
|
||
random_init ();
|
||
|
||
#ifdef DEBUG
|
||
stdout_init ();
|
||
#endif
|
||
|
||
ccid_thd = chopstx_create (PRIO_CCID, __stackaddr_ccid,
|
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__stacksize_ccid, USBthread, NULL);
|
||
|
||
#ifdef PINPAD_CIR_SUPPORT
|
||
cir_init ();
|
||
#endif
|
||
#ifdef PINPAD_DND_SUPPORT
|
||
msc_init ();
|
||
#endif
|
||
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||
usb_thd = chopstx_create (PRIO_USB, __stackaddr_usb, __stacksize_usb,
|
||
usb_intr, NULL);
|
||
|
||
while (1)
|
||
{
|
||
if (bDeviceState != UNCONNECTED)
|
||
break;
|
||
|
||
chopstx_usec_wait (250*1000);
|
||
}
|
||
|
||
while (1)
|
||
{
|
||
eventmask_t m;
|
||
|
||
if (icc_state_p != NULL && *icc_state_p == ICC_STATE_EXEC_REQUESTED)
|
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break;
|
||
|
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m = eventflag_wait_timeout (&led_event, MAIN_TIMEOUT_INTERVAL);
|
||
got_it:
|
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count++;
|
||
switch (m)
|
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{
|
||
case LED_ONESHOT:
|
||
if ((m = emit_led (100*1000, MAIN_TIMEOUT_INTERVAL))) goto got_it;
|
||
break;
|
||
case LED_TWOSHOTS:
|
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if ((m = emit_led (50*1000, 50*1000))) goto got_it;
|
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if ((m = emit_led (50*1000, MAIN_TIMEOUT_INTERVAL))) goto got_it;
|
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break;
|
||
case LED_SHOW_STATUS:
|
||
if ((count & 0x07) != 0) continue; /* Display once for eight times */
|
||
if ((m = display_status_code ())) goto got_it;
|
||
break;
|
||
case LED_START_COMMAND:
|
||
set_led (1);
|
||
led_inverted = 1;
|
||
break;
|
||
case LED_FINISH_COMMAND:
|
||
m = eventflag_wait_timeout (&led_event, LED_TIMEOUT_STOP);
|
||
led_inverted = 0;
|
||
set_led (0);
|
||
if (m)
|
||
goto got_it;
|
||
break;
|
||
case LED_FATAL:
|
||
display_fatal_code ();
|
||
break;
|
||
default:
|
||
if ((m = emit_led (LED_TIMEOUT_ZERO, LED_TIMEOUT_STOP)))
|
||
goto got_it;
|
||
break;
|
||
}
|
||
|
||
#ifdef DEBUG_MORE
|
||
if (stdout.connected && (count % 10) == 0)
|
||
{
|
||
DEBUG_SHORT (count / 10);
|
||
_write ("\r\nThis is Gnuk on STM32F103.\r\n"
|
||
"Testing USB driver.\n\n"
|
||
"Hello world\r\n\r\n", 30+21+15);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
random_fini ();
|
||
|
||
set_led (1);
|
||
usb_lld_shutdown ();
|
||
|
||
/* Finish application. */
|
||
chopstx_join (ccid_thd, NULL);
|
||
|
||
chopstx_cancel (usb_thd);
|
||
chopstx_join (usb_thd, NULL);
|
||
|
||
/* Set vector */
|
||
SCB->VTOR = (uint32_t)&_regnual_start;
|
||
entry = calculate_regnual_entry_address (&_regnual_start);
|
||
#ifdef DFU_SUPPORT
|
||
#define FLASH_SYS_START_ADDR 0x08000000
|
||
#define FLASH_SYS_END_ADDR (0x08000000+0x1000)
|
||
{
|
||
extern uint8_t _sys;
|
||
uint32_t addr;
|
||
handler *new_vector = (handler *)FLASH_SYS_START_ADDR;
|
||
void (*func) (void (*)(void)) = (void (*)(void (*)(void)))new_vector[9];
|
||
|
||
/* Kill DFU */
|
||
for (addr = FLASH_SYS_START_ADDR; addr < FLASH_SYS_END_ADDR;
|
||
addr += FLASH_PAGE_SIZE)
|
||
flash_erase_page (addr);
|
||
|
||
/* copy system service routines */
|
||
flash_write (FLASH_SYS_START_ADDR, &_sys, 0x1000);
|
||
|
||
/* Leave Gnuk to exec reGNUal */
|
||
(*func) ((void (*)(void))entry);
|
||
for (;;);
|
||
}
|
||
#else
|
||
/* Leave Gnuk to exec reGNUal */
|
||
flash_erase_all_and_exec ((void (*)(void))entry);
|
||
#endif
|
||
|
||
/* Never reached */
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
fatal (uint8_t code)
|
||
{
|
||
fatal_code = code;
|
||
eventflag_signal (&led_event, LED_FATAL);
|
||
_write ("fatal\r\n", 7);
|
||
for (;;);
|
||
}
|
||
|
||
/*
|
||
* Malloc for Gnuk.
|
||
*
|
||
* Each memory chunk has header with size information.
|
||
* The size of chunk is at least 16.
|
||
*
|
||
* Free memory is managed by FREE_LIST.
|
||
*
|
||
* When it is managed in FREE_LIST, three pointers, ->NEXT, ->PREV,
|
||
* and ->NEIGHBOR is used. NEXT and PREV is to implement doubly
|
||
* linked list. NEIGHBOR is to link adjacent memory chunk to be
|
||
* reclaimed to system.
|
||
*/
|
||
|
||
extern uint8_t __heap_base__[];
|
||
extern uint8_t __heap_end__[];
|
||
|
||
#define MEMORY_END (__heap_end__)
|
||
#define MEMORY_ALIGNMENT 16
|
||
#define MEMORY_ALIGN(n) (((n) + MEMORY_ALIGNMENT - 1) & ~(MEMORY_ALIGNMENT - 1))
|
||
|
||
static uint8_t *heap_p;
|
||
static chopstx_mutex_t malloc_mtx;
|
||
|
||
struct mem_head {
|
||
uint32_t size;
|
||
/**/
|
||
struct mem_head *next, *prev; /* free list chain */
|
||
struct mem_head *neighbor; /* backlink to neighbor */
|
||
};
|
||
|
||
static struct mem_head *free_list;
|
||
|
||
static void
|
||
gnuk_malloc_init (void)
|
||
{
|
||
chopstx_mutex_init (&malloc_mtx);
|
||
heap_p = __heap_base__;
|
||
free_list = NULL;
|
||
}
|
||
|
||
static void *
|
||
sbrk (size_t size)
|
||
{
|
||
void *p = (void *)heap_p;
|
||
|
||
if ((size_t)(MEMORY_END - heap_p) < size)
|
||
return NULL;
|
||
|
||
heap_p += size;
|
||
return p;
|
||
}
|
||
|
||
static void
|
||
remove_from_free_list (struct mem_head *m)
|
||
{
|
||
if (m->prev)
|
||
m->prev->next = m->next;
|
||
else
|
||
free_list = m->next;
|
||
if (m->next)
|
||
m->next->prev = m->prev;
|
||
}
|
||
|
||
|
||
void *
|
||
gnuk_malloc (size_t size)
|
||
{
|
||
struct mem_head *m;
|
||
struct mem_head *m0;
|
||
|
||
size = MEMORY_ALIGN (size + sizeof (uint32_t));
|
||
|
||
chopstx_mutex_lock (&malloc_mtx);
|
||
DEBUG_INFO ("malloc: ");
|
||
DEBUG_SHORT (size);
|
||
m = free_list;
|
||
|
||
while (1)
|
||
{
|
||
if (m == NULL)
|
||
{
|
||
m = (struct mem_head *)sbrk (size);
|
||
if (m)
|
||
m->size = size;
|
||
break;
|
||
}
|
||
|
||
if (m->size == size)
|
||
{
|
||
remove_from_free_list (m);
|
||
m0 = free_list;
|
||
while (m0)
|
||
if (m0->neighbor == m)
|
||
m0->neighbor = NULL;
|
||
else
|
||
m0 = m0->next;
|
||
break;
|
||
}
|
||
|
||
m = m->next;
|
||
}
|
||
|
||
chopstx_mutex_unlock (&malloc_mtx);
|
||
if (m == NULL)
|
||
{
|
||
DEBUG_WORD (0);
|
||
return m;
|
||
}
|
||
else
|
||
{
|
||
DEBUG_WORD ((uint32_t)m + sizeof (uint32_t));
|
||
return (void *)m + sizeof (uint32_t);
|
||
}
|
||
}
|
||
|
||
|
||
void
|
||
gnuk_free (void *p)
|
||
{
|
||
struct mem_head *m = (struct mem_head *)((void *)p - sizeof (uint32_t));
|
||
struct mem_head *m0;
|
||
|
||
chopstx_mutex_lock (&malloc_mtx);
|
||
m0 = free_list;
|
||
DEBUG_INFO ("free: ");
|
||
DEBUG_SHORT (m->size);
|
||
DEBUG_WORD ((uint32_t)p);
|
||
|
||
m->neighbor = NULL;
|
||
while (m0)
|
||
{
|
||
if ((void *)m + m->size == (void *)m0)
|
||
m0->neighbor = m;
|
||
else if ((void *)m0 + m0->size == (void *)m)
|
||
m->neighbor = m0;
|
||
|
||
m0 = m0->next;
|
||
}
|
||
|
||
if ((void *)m + m->size == heap_p)
|
||
{
|
||
struct mem_head *mn = m->neighbor;
|
||
|
||
heap_p -= m->size;
|
||
while (mn)
|
||
{
|
||
heap_p -= mn->size;
|
||
remove_from_free_list (mn);
|
||
mn = mn->neighbor;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
m->next = free_list;
|
||
m->prev = NULL;
|
||
if (free_list)
|
||
free_list->prev = m;
|
||
free_list = m;
|
||
}
|
||
|
||
chopstx_mutex_unlock (&malloc_mtx);
|
||
}
|