eeprom_stm32: implement high density wear leveling (#12567)

* eeprom_stm32: implement wear leveling
Update EECONFIG_MAGIC_NUMBER
eeprom_stm32: check emulated eeprom size is large enough
* eeprom_stm32: Increasing simulated EEPROM density on stm32
* Adding utility script to decode emulated eeprom
* Adding unit tests
* Applying qmk cformat changes
* cleaned up flash mocking
* Fix for stm32eeprom_parser.py checking via signature with wrong base
* Fix for nk65 keyboard

Co-authored-by: Ilya Zhuravlev <whatever@xyz.is>
Co-authored-by: zvecr <git@zvecr.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/tmk_core/common/test/flash_stm32_mock.c b/tmk_core/common/test/flash_stm32_mock.c
new file mode 100644
index 0000000000..1b81d81f9a
--- /dev/null
+++ b/tmk_core/common/test/flash_stm32_mock.c
@@ -0,0 +1,50 @@
+/* Copyright 2021 by Don Kjer
+ *
+ * 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdbool.h>
+#include "flash_stm32.h"
+
+uint8_t FlashBuf[MOCK_FLASH_SIZE] = {0};
+
+static bool flash_locked = true;
+
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address) {
+    if (flash_locked) return FLASH_ERROR_WRP;
+    Page_Address -= (uintptr_t)FlashBuf;
+    Page_Address -= (Page_Address % FEE_PAGE_SIZE);
+    if (Page_Address >= MOCK_FLASH_SIZE) return FLASH_BAD_ADDRESS;
+    memset(&FlashBuf[Page_Address], '\xff', FEE_PAGE_SIZE);
+    return FLASH_COMPLETE;
+}
+
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data) {
+    if (flash_locked) return FLASH_ERROR_WRP;
+    Address -= (uintptr_t)FlashBuf;
+    if (Address >= MOCK_FLASH_SIZE) return FLASH_BAD_ADDRESS;
+    uint16_t oldData = *(uint16_t*)&FlashBuf[Address];
+    if (oldData == 0xFFFF || Data == 0) {
+        *(uint16_t*)&FlashBuf[Address] = Data;
+        return FLASH_COMPLETE;
+    } else {
+        return FLASH_ERROR_PG;
+    }
+}
+
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout) { return FLASH_COMPLETE; }
+void         FLASH_Unlock(void) { flash_locked = false; }
+void         FLASH_Lock(void) { flash_locked = true; }
+void         FLASH_ClearFlag(uint32_t FLASH_FLAG) {}