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modtrezorio: add FlashOTP class

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Pavol Rusnak 2017-09-27 12:00:35 +02:00
parent 66930f2e37
commit 67d8d4fa2e
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GPG Key ID: 91F3B339B9A02A3D
5 changed files with 168 additions and 12 deletions
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101
embed/extmod/modtrezorio/modtrezorio-flash.h Normal file
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@ -0,0 +1,101 @@
/*
* Copyright (c) Pavol Rusnak, SatoshiLabs
*
* Licensed under TREZOR License
* see LICENSE file for details
*/
#if defined TREZOR_STM32
#include "flash.h"
#elif defined TREZOR_UNIX
#include "unix-flash-mock.h"
#else
#error Unsupported TREZOR port. Only STM32 and UNIX ports are supported.
#endif
/// class FlashOTP:
/// '''
/// '''
typedef struct _mp_obj_FlashOTP_t {
mp_obj_base_t base;
} mp_obj_FlashOTP_t;
/// def __init__(self) -> None:
/// '''
/// '''
STATIC mp_obj_t mod_trezorio_FlashOTP_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 0, false);
mp_obj_FlashOTP_t *o = m_new_obj(mp_obj_FlashOTP_t);
o->base.type = type;
return MP_OBJ_FROM_PTR(o);
}
/// def FlashOTP.write(self, block: int, offset: int, data: bytes) -> None:
/// '''
/// Writes data to OTP flash
/// '''
STATIC mp_obj_t mod_trezorio_FlashOTP_write(size_t n_args, const mp_obj_t *args) {
uint8_t block = mp_obj_get_int(args[1]);
uint8_t offset = mp_obj_get_int(args[2]);
mp_buffer_info_t data;
mp_get_buffer_raise(args[3], &data, MP_BUFFER_READ);
if (!flash_otp_write(block, offset, data.buf, data.len)) {
mp_raise_ValueError("write failed");
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorio_FlashOTP_write_obj, 4, 4, mod_trezorio_FlashOTP_write);
/// def FlashOTP.read(self, block: int, offset: int, data: bytearray) -> None:
/// '''
/// Reads data from OTP flash
/// '''
STATIC mp_obj_t mod_trezorio_FlashOTP_read(size_t n_args, const mp_obj_t *args) {
uint8_t block = mp_obj_get_int(args[1]);
uint8_t offset = mp_obj_get_int(args[2]);
mp_buffer_info_t data;
mp_get_buffer_raise(args[3], &data, MP_BUFFER_WRITE);
if (!flash_otp_read(block, offset, data.buf, data.len)) {
mp_raise_ValueError("read failed");
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_trezorio_FlashOTP_read_obj, 4, 4, mod_trezorio_FlashOTP_read);
/// def FlashOTP.lock(self, block: int) -> None:
/// '''
/// Lock OTP flash block
/// '''
STATIC mp_obj_t mod_trezorio_FlashOTP_lock(mp_obj_t self, mp_obj_t block) {
uint8_t b = mp_obj_get_int(block);
if (!flash_otp_lock(b)) {
mp_raise_ValueError("lock failed");
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_FlashOTP_lock_obj, mod_trezorio_FlashOTP_lock);
/// def FlashOTP.is_locked(self, block: int) -> bool:
/// '''
/// Is OTP flash block locked?
/// '''
STATIC mp_obj_t mod_trezorio_FlashOTP_is_locked(mp_obj_t self, mp_obj_t block) {
uint8_t b = mp_obj_get_int(block);
return flash_otp_is_locked(b) ? mp_const_true : mp_const_false;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_FlashOTP_is_locked_obj, mod_trezorio_FlashOTP_is_locked);
STATIC const mp_rom_map_elem_t mod_trezorio_FlashOTP_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mod_trezorio_FlashOTP_read_obj) },
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mod_trezorio_FlashOTP_write_obj) },
{ MP_ROM_QSTR(MP_QSTR_lock), MP_ROM_PTR(&mod_trezorio_FlashOTP_lock_obj) },
{ MP_ROM_QSTR(MP_QSTR_is_locked), MP_ROM_PTR(&mod_trezorio_FlashOTP_is_locked_obj) },
};
STATIC MP_DEFINE_CONST_DICT(mod_trezorio_FlashOTP_locals_dict, mod_trezorio_FlashOTP_locals_dict_table);
STATIC const mp_obj_type_t mod_trezorio_FlashOTP_type = {
{ &mp_type_type },
.name = MP_QSTR_FlashOTP,
.make_new = mod_trezorio_FlashOTP_make_new,
.locals_dict = (void*)&mod_trezorio_FlashOTP_locals_dict,
};

3
embed/extmod/modtrezorio/modtrezorio.c
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@ -11,6 +11,7 @@
#if MICROPY_PY_TREZORIO
#include "modtrezorio-flash.h"
#include "modtrezorio-sbu.h"
#include "modtrezorio-sdcard.h"
#include "modtrezorio-msg.h"
@ -18,6 +19,8 @@
STATIC const mp_rom_map_elem_t mp_module_trezorio_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_trezorio) },
{ MP_ROM_QSTR(MP_QSTR_FlashOTP), MP_ROM_PTR(&mod_trezorio_FlashOTP_type) },
{ MP_ROM_QSTR(MP_QSTR_SBU), MP_ROM_PTR(&mod_trezorio_SBU_type) },
{ MP_ROM_QSTR(MP_QSTR_SDCard), MP_ROM_PTR(&mod_trezorio_SDCard_type) },

52
embed/extmod/modtrezorio/unix-flash-mock.h Normal file
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@ -0,0 +1,52 @@
/*
* Copyright (c) Pavol Rusnak, SatoshiLabs
*
* Licensed under TREZOR License
* see LICENSE file for details
*/
#include "../../trezorhal/flash.h"
int flash_init(void)
{
return 0;
}
void flash_set_option_bytes(void)
{
}
bool flash_unlock(void)
{
return false;
}
bool flash_lock(void)
{
return false;
}
bool flash_erase_sectors(int start, int end, void (*progress)(uint16_t val))
{
return false;
}
bool flash_otp_read(uint8_t block, uint8_t offset, uint8_t *data, uint8_t datalen)
{
return false;
}
bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t datalen)
{
return false;
}
bool flash_otp_lock(uint8_t block)
{
return false;
}
bool flash_otp_is_locked(uint8_t block)
{
return false;
}

22
embed/trezorhal/flash.c
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@ -84,6 +84,17 @@ bool flash_erase_sectors(int start, int end, void (*progress)(uint16_t val))
#define FLASH_OTP_NUM_BLOCKS 16
#define FLASH_OTP_BLOCK_SIZE 32
bool flash_otp_read(uint8_t block, uint8_t offset, uint8_t *data, uint8_t datalen)
{
if (block >= FLASH_OTP_NUM_BLOCKS || offset + datalen > FLASH_OTP_BLOCK_SIZE) {
return false;
}
for (uint8_t i = 0; i < datalen; i++) {
data[i] = *(__IO uint8_t *)(FLASH_OTP_BASE + block * FLASH_OTP_BLOCK_SIZE + offset + i);
}
return true;
}
bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t datalen)
{
if (block >= FLASH_OTP_NUM_BLOCKS || offset + datalen > FLASH_OTP_BLOCK_SIZE) {
@ -103,17 +114,6 @@ bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t
return ret == HAL_OK;
}
bool flash_otp_read(uint8_t block, uint8_t offset, uint8_t *data, uint8_t datalen)
{
if (block >= FLASH_OTP_NUM_BLOCKS || offset + datalen > FLASH_OTP_BLOCK_SIZE) {
return false;
}
for (uint8_t i = 0; i < datalen; i++) {
data[i] = *(__IO uint8_t *)(FLASH_OTP_BASE + block * FLASH_OTP_BLOCK_SIZE + offset + i);
}
return true;
}
bool flash_otp_lock(uint8_t block)
{
if (block >= FLASH_OTP_NUM_BLOCKS) {

2
embed/trezorhal/flash.h
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@ -25,8 +25,8 @@ bool flash_lock(void);
bool flash_erase_sectors(int start, int end, void (*progress)(uint16_t val));
bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t datalen);
bool flash_otp_read(uint8_t block, uint8_t offset, uint8_t *data, uint8_t datalen);
bool flash_otp_write(uint8_t block, uint8_t offset, const uint8_t *data, uint8_t datalen);
bool flash_otp_lock(uint8_t block);
bool flash_otp_is_locked(uint8_t block);