From bd18bc5a42fcecfb710477371b9f62610a1ea640 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Sat, 28 Feb 2015 16:04:00 -0800 Subject: [PATCH] altos: Add chaoskey flash loader Signed-off-by: Keith Packard --- src/chaoskey-v0.1/flash-loader/.gitignore | 2 + src/chaoskey-v0.1/flash-loader/ao_pins.h | 36 +++++++++++++ src/drivers/ao_trng_send.c | 62 +++++++++++++++++++++++ src/drivers/ao_trng_send.h | 24 +++++++++ 4 files changed, 124 insertions(+) create mode 100644 src/chaoskey-v0.1/flash-loader/.gitignore create mode 100644 src/chaoskey-v0.1/flash-loader/ao_pins.h create mode 100644 src/drivers/ao_trng_send.c create mode 100644 src/drivers/ao_trng_send.h diff --git a/src/chaoskey-v0.1/flash-loader/.gitignore b/src/chaoskey-v0.1/flash-loader/.gitignore new file mode 100644 index 00000000..32dbbbcf --- /dev/null +++ b/src/chaoskey-v0.1/flash-loader/.gitignore @@ -0,0 +1,2 @@ +ao_product.h +usbtrng* diff --git a/src/chaoskey-v0.1/flash-loader/ao_pins.h b/src/chaoskey-v0.1/flash-loader/ao_pins.h new file mode 100644 index 00000000..295e0258 --- /dev/null +++ b/src/chaoskey-v0.1/flash-loader/ao_pins.h @@ -0,0 +1,36 @@ +/* + * Copyright © 2013 Keith Packard + * + * 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; version 2 of the License. + * + * 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. + */ + +#ifndef _AO_PINS_H_ +#define _AO_PINS_H_ + +#include + +/* Pin 5 on debug connector */ + +#define AO_BOOT_PIN 1 +#define AO_BOOT_APPLICATION_GPIO stm_gpioa +#define AO_BOOT_APPLICATION_PIN 15 +#define AO_BOOT_APPLICATION_VALUE 1 +#define AO_BOOT_APPLICATION_MODE AO_EXTI_MODE_PULL_UP + +/* USB */ +#define HAS_USB 1 +#define AO_USB_DIRECTIO 0 +#define AO_PA11_PA12_RMP 0 + +#endif /* _AO_PINS_H_ */ diff --git a/src/drivers/ao_trng_send.c b/src/drivers/ao_trng_send.c new file mode 100644 index 00000000..34a8a981 --- /dev/null +++ b/src/drivers/ao_trng_send.c @@ -0,0 +1,62 @@ +/* + * Copyright © 2015 Keith Packard + * + * 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; version 2 of the License. + * + * 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 +#include +#include +#include + +static void +ao_trng_send(void) +{ + static uint16_t *buffer[2]; + int usb_buf_id; + uint16_t i; + uint16_t *buf; + uint32_t *rnd; + + if (!buffer[0]) { + buffer[0] = ao_usb_alloc(); + buffer[1] = ao_usb_alloc(); + if (!buffer[0]) + return; + } + + usb_buf_id = 0; + + ao_crc_reset(); + + for (;;) { + ao_led_on(AO_LED_TRNG_ACTIVE); + rnd = (uint32_t *) ao_adc_get(AO_USB_IN_SIZE); /* one 16-bit value per output byte */ + buf = buffer[usb_buf_id]; + for (i = 0; i < AO_USB_IN_SIZE / sizeof (uint16_t); i++) + *buf++ = ao_crc_in_32_out_16(*rnd++); + ao_adc_ack(AO_USB_IN_SIZE); + ao_led_off(AO_LED_TRNG_ACTIVE); + ao_usb_write(buffer[usb_buf_id], AO_USB_IN_SIZE); + usb_buf_id = 1-usb_buf_id; + } +} + +static struct ao_task ao_trng_send_task; + +void +ao_trng_send_init(void) +{ + ao_add_task(&ao_trng_send_task, ao_trng_send, "trng_send"); +} diff --git a/src/drivers/ao_trng_send.h b/src/drivers/ao_trng_send.h new file mode 100644 index 00000000..83312d59 --- /dev/null +++ b/src/drivers/ao_trng_send.h @@ -0,0 +1,24 @@ +/* + * Copyright © 2015 Keith Packard + * + * 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; version 2 of the License. + * + * 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. + */ + +#ifndef _AO_TRNG_SEND_H_ +#define _AO_TRNG_SEND_H_ + +void +ao_trng_send_init(void); + +#endif /* _AO_TRNG_SEND_H_ */ -- 2.30.2