Wear-leveling EEPROM drivers: `embedded_flash`, `spi_flash`, `legacy` (#17376)

1 files changed, 50 insertions, 0 deletions

diff --git a/platforms/chibios/drivers/wear_leveling/wear_leveling_efl_config.h b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl_config.h
new file mode 100644
index 0000000000..9e38c2965d
--- /dev/null
+++ b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl_config.h
@@ -0,0 +1,50 @@
+// Copyright 2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#ifndef __ASSEMBLER__
+#    include <hal.h>
+#endif
+
+// Work out how many bytes per write to internal flash
+#ifndef BACKING_STORE_WRITE_SIZE
+// These need to match EFL's XXXXXX_FLASH_LINE_SIZE, see associated code in `lib/chibios/os/hal/ports/**/hal_efl_lld.c`,
+// or associated `stm32_registry.h` for the MCU in question (or equivalent for the family).
+#    if defined(QMK_MCU_SERIES_GD32VF103)
+#        define BACKING_STORE_WRITE_SIZE 2 // from hal_efl_lld.c
+#    elif defined(QMK_MCU_FAMILY_NUC123)
+#        define BACKING_STORE_WRITE_SIZE 4 // from hal_efl_lld.c
+#    elif defined(QMK_MCU_FAMILY_STM32)
+#        if defined(STM32_FLASH_LINE_SIZE) // from some family's stm32_registry.h file
+#            define BACKING_STORE_WRITE_SIZE (STM32_FLASH_LINE_SIZE)
+#        else
+#            if defined(QMK_MCU_SERIES_STM32F1XX)
+#                define BACKING_STORE_WRITE_SIZE 2 // from hal_efl_lld.c
+#            elif defined(QMK_MCU_SERIES_STM32F3XX)
+#                define BACKING_STORE_WRITE_SIZE 2 // from hal_efl_lld.c
+#            elif defined(QMK_MCU_SERIES_STM32F4XX)
+#                define BACKING_STORE_WRITE_SIZE (1 << STM32_FLASH_PSIZE) // from hal_efl_lld.c
+#            elif defined(QMK_MCU_SERIES_STM32L4XX)
+#                define BACKING_STORE_WRITE_SIZE 8 // from hal_efl_lld.c
+#            elif defined(QMK_MCU_SERIES_STM32G0XX)
+#                define BACKING_STORE_WRITE_SIZE 8 // from hal_efl_lld.c
+#            elif defined(QMK_MCU_SERIES_STM32G4XX)
+#                define BACKING_STORE_WRITE_SIZE 8 // from hal_efl_lld.c
+#            else
+#                error "ChibiOS hasn't defined STM32_FLASH_LINE_SIZE, and could not automatically determine BACKING_STORE_WRITE_SIZE" // normally defined in stm32_registry.h, should be set by STM32_FLASH_LINE_SIZE
+#            endif
+#        endif
+#    else
+#        error "Could not automatically determine BACKING_STORE_WRITE_SIZE"
+#    endif
+#endif
+
+// 2kB backing space allocated
+#ifndef WEAR_LEVELING_BACKING_SIZE
+#    define WEAR_LEVELING_BACKING_SIZE 2048
+#endif // WEAR_LEVELING_BACKING_SIZE
+
+// 1kB logical EEPROM
+#ifndef WEAR_LEVELING_LOGICAL_SIZE
+#    define WEAR_LEVELING_LOGICAL_SIZE 1024
+#endif // WEAR_LEVELING_LOGICAL_SIZE