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trezor-firmware/core/embed/util/translations/translations.c
2024-11-18 09:41:02 +01:00

49 lines
1.4 KiB
C

#include <trezor_model.h>
#include <trezor_rtl.h>
#include <sys/mpu.h>
#include <util/flash.h>
#include <util/translations.h>
#ifdef KERNEL_MODE
bool translations_write(const uint8_t* data, uint32_t offset, uint32_t len) {
uint32_t size = translations_area_bytesize();
if (offset > size || size - offset < len) {
return false;
}
mpu_mode_t mpu_mode = mpu_reconfig(MPU_MODE_ASSETS);
ensure(flash_unlock_write(), "translations_write unlock");
// todo consider alignment
ensure(flash_area_write_data_padded(&ASSETS_AREA, offset, data, len, 0xFF,
FLASH_ALIGN(len)),
"translations_write write");
ensure(flash_lock_write(), "translations_write lock");
mpu_restore(mpu_mode);
return true;
}
const uint8_t* translations_read(uint32_t* len, uint32_t offset) {
// TODO: _Static_assert was not happy with ASSETS_AREA.num_subareas == 1
// error: expression in static assertion is not constant
assert(ASSETS_AREA.num_subareas == 1);
*len = flash_area_get_size(&ASSETS_AREA) - offset;
return flash_area_get_address(&ASSETS_AREA, offset, 0);
}
void translations_erase(void) {
mpu_mode_t mpu_mode = mpu_reconfig(MPU_MODE_ASSETS);
ensure(flash_area_erase(&ASSETS_AREA, NULL), "translations erase");
mpu_restore(mpu_mode);
}
uint32_t translations_area_bytesize(void) {
return flash_area_get_size(&ASSETS_AREA);
}
#endif // KERNEL_MODE