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wolfBoot/tools/unit-tests/unit-mock-flash.c

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/* unit-mock-flash.c
*
* Mock flash access for unit tests
* usage: #include "unit-mock-flash.c"
*
*
* Copyright (C) 2024 wolfSSL Inc.
*
* This file is part of wolfBoot.
*
* wolfBoot 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; either version 3 of the License, or
* (at your option) any later version.
*
* wolfBoot 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
static int locked = 1;
static int ext_locked = 1;
static int erased_boot = 0;
static int erased_update = 0;
static int erased_swap = 0;
static int erased_nvm_bank0 = 0;
static int erased_nvm_bank1 = 0;
static int erased_vault = 0;
const char *argv0;
/* Mocks */
void hal_init(void)
{
}
int hal_flash_write(haladdr_t address, const uint8_t *data, int len)
{
int i;
uint8_t *a = (uint8_t *)(uintptr_t)address;
fail_if(locked, "Attempting to write to a locked FLASH");
if ((address >= WOLFBOOT_PARTITION_SWAP_ADDRESS) &&
(address < WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_SECTOR_SIZE)) {
for (i = 0; i < len; i++) {
a[i] = data[i];
}
}
if ((address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS) &&
(address < WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
for (i = 0; i < len; i++) {
a[i] = data[i];
}
}
if ((address >= WOLFBOOT_PARTITION_BOOT_ADDRESS) &&
(address < WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
for (i = 0; i < len; i++) {
a[i] = data[i];
}
}
#ifdef MOCK_KEYVAULT
if ((address >= (const uintptr_t)vault_base) && (address < (const uintptr_t)vault_base + keyvault_size)) {
for (i = 0; i < len; i++) {
a[i] = data[i];
}
}
#endif
return 0;
}
int hal_flash_erase(haladdr_t address, int len)
{
fail_if(locked, "Attempting to erase a locked FLASH");
if ((address >= WOLFBOOT_PARTITION_BOOT_ADDRESS) &&
(address < WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
erased_boot++;
memset((void*)(uintptr_t)address, 0xFF, len);
if (address >= WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE - WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank0++;
} else if (address >= WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE - 2 * WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank1++;
}
} else if ((address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS) &&
(address < WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
erased_update++;
memset((void *)(uintptr_t)address, 0xFF, len);
if (address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE - WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank0++;
} else if (address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE - 2 * WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank1++;
}
} else if ((address >= WOLFBOOT_PARTITION_SWAP_ADDRESS) &&
(address < WOLFBOOT_PARTITION_SWAP_ADDRESS + WOLFBOOT_SECTOR_SIZE)) {
erased_swap++;
memset((void *)(uintptr_t)address, 0xFF, len);
#ifdef MOCK_KEYVAULT
} else if ((address >= (uintptr_t)vault_base) && (address < (uintptr_t)vault_base + keyvault_size)) {
printf("Erasing vault from %p : %p bytes\n", address, len);
erased_vault++;
memset((void *)(uintptr_t)address, 0xFF, len);
#endif
} else {
fail("Invalid address\n");
return -1;
}
return 0;
}
void hal_flash_unlock(void)
{
fail_unless(locked, "Double unlock detected\n");
locked--;
}
void hal_flash_lock(void)
{
fail_if(locked, "Double lock detected\n");
locked++;
}
void hal_prepare_boot(void)
{
}
int ext_flash_erase(uintptr_t address, int len)
{
#ifdef PART_BOOT_EXT
if ((address >= WOLFBOOT_PARTITION_BOOT_ADDRESS) &&
(address < WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
erased_update++;
memset((void *)(uintptr_t)address, 0xFF, len);
if (address >= WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE - WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank0++;
} else if (address >= WOLFBOOT_PARTITION_BOOT_ADDRESS + WOLFBOOT_PARTITION_SIZE - 2 * WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank1++;
}
} else
#endif
if ((address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS) &&
(address < WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE)) {
erased_update++;
memset((void *)(uintptr_t)address, 0xFF, len);
if (address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE - WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank0++;
} else if (address >= WOLFBOOT_PARTITION_UPDATE_ADDRESS + WOLFBOOT_PARTITION_SIZE - 2 * WOLFBOOT_SECTOR_SIZE) {
erased_nvm_bank1++;
}
} else if ((address >= WOLFBOOT_PARTITION_SWAP_ADDRESS) &&
(address < WOLFBOOT_PARTITION_SWAP_ADDRESS + WOLFBOOT_SECTOR_SIZE)) {
erased_swap++;
memset((void *)(uintptr_t)address, 0xFF, len);
} else {
fail("Invalid address: %p\n", address);
return -1;
}
return 0;
}
int ext_flash_write(uintptr_t address, const uint8_t *data, int len)
{
int i;
uint8_t *a = (uint8_t *)address;
fail_if(ext_locked, "Attempting to write to a locked FLASH");
for (i = 0; i < len; i++) {
a[i] = data[i];
}
return 0;
}
int ext_flash_read(uintptr_t address, uint8_t *data, int len)
{
int i;
uint8_t *a = (uint8_t *)address;
for (i = 0; i < len; i++) {
data[i] = a[i];
}
return len;
}
void ext_flash_unlock(void)
{
fail_unless(ext_locked, "Double ext unlock detected\n");
ext_locked--;
}
void ext_flash_lock(void)
{
fail_if(ext_locked, "Double ext lock detected\n");
ext_locked++;
}
/* A simple mock memory */
static int mmap_file(const char *path, uint8_t *address, uint32_t len,
uint8_t** ret_address)
{
struct stat st = { 0 };
uint8_t *mmaped_addr;
int ret;
int fd;
int i;
if (path == NULL)
return -1;
fd = open(path, O_RDWR|O_CREAT|O_TRUNC, 0666);
if (fd == -1) {
fprintf(stderr, "can't open %s\n", path);
return -1;
}
fprintf(stderr, "Open file: %s success.\n", path);
for (i = 0; i < len; i+=4) {
const uint32_t erased_word = 0xBADBADBA;
write(fd, &erased_word, 4);
}
lseek(fd, SEEK_SET, 0);
mmaped_addr = mmap(address, len, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (mmaped_addr == MAP_FAILED) {
fprintf(stderr, "MMAP failed.\n");
return -1;
}
fprintf(stderr, "Simulator assigned %s to base %p\n", path, mmaped_addr);
if (ret_address)
*ret_address = mmaped_addr;
close(fd);
return 0;
}
/* End Mocks */
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