From 34e244cecf62afb30ee5a4362867f24b03675691 Mon Sep 17 00:00:00 2001 From: Nick Brassel Date: Thu, 30 Jun 2022 07:42:23 +1000 Subject: Wear-leveling EEPROM drivers: `embedded_flash`, `spi_flash`, `legacy` (#17376) --- .../drivers/wear_leveling/wear_leveling_efl.c | 140 +++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c (limited to 'platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c') diff --git a/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c new file mode 100644 index 0000000000..4b5639ee4a --- /dev/null +++ b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c @@ -0,0 +1,140 @@ +// Copyright 2022 Nick Brassel (@tzarc) +// SPDX-License-Identifier: GPL-2.0-or-later +#include +#include +#include "timer.h" +#include "wear_leveling.h" +#include "wear_leveling_internal.h" + +static flash_offset_t base_offset = UINT32_MAX; + +#if defined(WEAR_LEVELING_EFL_FIRST_SECTOR) +static flash_sector_t first_sector = WEAR_LEVELING_EFL_FIRST_SECTOR; +#else // defined(WEAR_LEVELING_EFL_FIRST_SECTOR) +static flash_sector_t first_sector = UINT16_MAX; +#endif // defined(WEAR_LEVELING_EFL_FIRST_SECTOR) + +static flash_sector_t sector_count = UINT16_MAX; +static BaseFlash * flash; + +#ifndef WEAR_LEVELING_EFL_FIRST_SECTOR +// "Automatic" detection of the flash size -- ideally ChibiOS would have this already, but alas, it doesn't. +static inline uint32_t detect_flash_size(void) { +# if defined(WEAR_LEVELING_EFL_FLASH_SIZE) + return WEAR_LEVELING_EFL_FLASH_SIZE; +# elif defined(FLASH_BANK_SIZE) + return FLASH_BANK_SIZE; +# elif defined(FLASH_SIZE) + return FLASH_SIZE; +# elif defined(FLASHSIZE_BASE) +# if defined(QMK_MCU_SERIES_STM32F0XX) || defined(QMK_MCU_SERIES_STM32F1XX) || defined(QMK_MCU_SERIES_STM32F3XX) || defined(QMK_MCU_SERIES_STM32F4XX) || defined(QMK_MCU_SERIES_STM32G4XX) || defined(QMK_MCU_SERIES_STM32L0XX) || defined(QMK_MCU_SERIES_STM32L4XX) || defined(QMK_MCU_SERIES_GD32VF103) + return ((*(uint32_t *)FLASHSIZE_BASE) & 0xFFFFU) << 10U; // this register has the flash size in kB, so we convert it to bytes +# elif defined(QMK_MCU_SERIES_STM32L1XX) +# error This MCU family has an uncommon flash size register definition and has not been implemented. Perhaps try using the true EEPROM on the MCU instead? +# endif +# else +# error Unknown flash size definition. + return 0; +# endif +} +#endif // WEAR_LEVELING_EFL_FIRST_SECTOR + +bool backing_store_init(void) { + bs_dprintf("Init\n"); + flash = (BaseFlash *)&EFLD1; + + const flash_descriptor_t *desc = flashGetDescriptor(flash); + uint32_t counter = 0; + +#if defined(WEAR_LEVELING_EFL_FIRST_SECTOR) + + // Work out how many sectors we want to use, working forwards from the first sector specified + for (flash_sector_t i = 0; i < desc->sectors_count - first_sector; ++i) { + counter += flashGetSectorSize(flash, first_sector + i); + if (counter >= (WEAR_LEVELING_BACKING_SIZE)) { + sector_count = i + 1; + base_offset = flashGetSectorOffset(flash, first_sector); + break; + } + } + if (sector_count == UINT16_MAX || base_offset >= flash_size) { + // We didn't get the required number of sectors. Can't do anything here. Fault. + chSysHalt("Invalid sector count intended to be used with wear_leveling"); + } + +#else // defined(WEAR_LEVELING_EFL_FIRST_SECTOR) + + // Work out how many sectors we want to use, working backwards from the end of the flash + uint32_t flash_size = detect_flash_size(); + flash_sector_t last_sector = desc->sectors_count; + for (flash_sector_t i = 0; i < desc->sectors_count; ++i) { + first_sector = desc->sectors_count - i - 1; + if (flashGetSectorOffset(flash, first_sector) >= flash_size) { + last_sector = first_sector; + continue; + } + counter += flashGetSectorSize(flash, first_sector); + if (counter >= (WEAR_LEVELING_BACKING_SIZE)) { + sector_count = last_sector - first_sector; + base_offset = flashGetSectorOffset(flash, first_sector); + break; + } + } + +#endif // defined(WEAR_LEVELING_EFL_FIRST_SECTOR) + + return true; +} + +bool backing_store_unlock(void) { + bs_dprintf("Unlock\n"); + return eflStart(&EFLD1, NULL) == HAL_RET_SUCCESS; +} + +bool backing_store_erase(void) { +#ifdef WEAR_LEVELING_DEBUG_OUTPUT + uint32_t start = timer_read32(); +#endif + + bool ret = true; + flash_error_t status; + for (int i = 0; i < sector_count; ++i) { + // Kick off the sector erase + status = flashStartEraseSector(flash, first_sector + i); + if (status != FLASH_NO_ERROR && status != FLASH_BUSY_ERASING) { + ret = false; + } + + // Wait for the erase to complete + status = flashWaitErase(flash); + if (status != FLASH_NO_ERROR && status != FLASH_BUSY_ERASING) { + ret = false; + } + } + + bs_dprintf("Backing store erase took %ldms to complete\n", ((long)(timer_read32() - start))); + return ret; +} + +bool backing_store_write(uint32_t address, backing_store_int_t value) { + uint32_t offset = (base_offset + address); + bs_dprintf("Write "); + wl_dump(offset, &value, sizeof(value)); + value = ~value; + return flashProgram(flash, offset, sizeof(value), (const uint8_t *)&value) == FLASH_NO_ERROR; +} + +bool backing_store_lock(void) { + bs_dprintf("Lock \n"); + eflStop(&EFLD1); + return true; +} + +bool backing_store_read(uint32_t address, backing_store_int_t *value) { + uint32_t offset = (base_offset + address); + backing_store_int_t *loc = (backing_store_int_t *)offset; + *value = ~(*loc); + bs_dprintf("Read "); + wl_dump(offset, value, sizeof(backing_store_int_t)); + return true; +} -- cgit v1.2.3 From dc70ba612a929fdd365275d412e68c61836ed5b8 Mon Sep 17 00:00:00 2001 From: Nick Brassel Date: Thu, 14 Jul 2022 00:41:08 +1000 Subject: Post-bootloader EFL/SPI fixes. (#17661) * Fixup read address for EFL driver. * Fixup sequencing of SPI. * Lock during init of EFL backing store. --- platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c') diff --git a/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c index 4b5639ee4a..cdd1e26a7d 100644 --- a/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c +++ b/platforms/chibios/drivers/wear_leveling/wear_leveling_efl.c @@ -43,6 +43,9 @@ bool backing_store_init(void) { bs_dprintf("Init\n"); flash = (BaseFlash *)&EFLD1; + // Need to re-lock the EFL, as if we've just had the bootloader executing it'll already be unlocked. + backing_store_lock(); + const flash_descriptor_t *desc = flashGetDescriptor(flash); uint32_t counter = 0; @@ -132,7 +135,7 @@ bool backing_store_lock(void) { bool backing_store_read(uint32_t address, backing_store_int_t *value) { uint32_t offset = (base_offset + address); - backing_store_int_t *loc = (backing_store_int_t *)offset; + backing_store_int_t *loc = (backing_store_int_t *)flashGetOffsetAddress(flash, offset); *value = ~(*loc); bs_dprintf("Read "); wl_dump(offset, value, sizeof(backing_store_int_t)); -- cgit v1.2.3