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Code Issues Releases Wiki Activity

WIP - C side verification of write validity

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This commit is contained in:
matejcik 2024-01-25 13:03:31 +01:00
parent f459cac9bc
commit 9a718b92b9
2 changed files with 10 additions and 3 deletions
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10
core/embed/trezorhal/stm32f4/translations.c
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@ -1,12 +1,17 @@
#include "translations.h" #include "translations.h"
#include <assert.h> #include <assert.h>
#include <stdbool.h>
#include <string.h> #include <string.h>
#include "common.h" #include "common.h"
#include "flash.h" #include "flash.h"
#include "model.h" #include "model.h"
void translations_write(const uint8_t* data, uint32_t offset, uint32_t len) { bool translations_write(const uint8_t* data, uint32_t offset, uint32_t len) {
// TODO maybe return errors from here? uint32_t size = translations_area_bytesize();
if (offset > size || size - offset < len) {
return false;
}
ensure(flash_unlock_write(), "translations_write unlock"); ensure(flash_unlock_write(), "translations_write unlock");
for (int i = 0; i < len; i++) { for (int i = 0; i < len; i++) {
// TODO optimize by writing by (quad)words // TODO optimize by writing by (quad)words
@ -14,6 +19,7 @@ void translations_write(const uint8_t* data, uint32_t offset, uint32_t len) {
"translations_write write"); "translations_write write");
} }
ensure(flash_lock_write(), "translations_write lock"); ensure(flash_lock_write(), "translations_write lock");
return true;
} }
const uint8_t* translations_read(uint32_t* len, uint32_t offset) { const uint8_t* translations_read(uint32_t* len, uint32_t offset) {

3
core/embed/trezorhal/translations.h
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@ -1,6 +1,7 @@
#include <stdbool.h>
#include <stdint.h> #include <stdint.h>
void translations_write(const uint8_t* data, uint32_t offset, uint32_t len); bool translations_write(const uint8_t* data, uint32_t offset, uint32_t len);
const uint8_t* translations_read(uint32_t* len, uint32_t offset); const uint8_t* translations_read(uint32_t* len, uint32_t offset);