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59 lines
1.7 KiB
59 lines
1.7 KiB
// Copyright 2022 Nick Brassel (@tzarc)
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <stdbool.h>
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#include <hal.h>
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#include "timer.h"
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#include "wear_leveling.h"
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#include "wear_leveling_internal.h"
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#include "flash_stm32.h"
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bool backing_store_init(void) {
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bs_dprintf("Init\n");
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return true;
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}
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bool backing_store_unlock(void) {
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bs_dprintf("Unlock\n");
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FLASH_Unlock();
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return true;
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}
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bool backing_store_erase(void) {
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#ifdef WEAR_LEVELING_DEBUG_OUTPUT
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uint32_t start = timer_read32();
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#endif
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bool ret = true;
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FLASH_Status status;
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for (int i = 0; i < (WEAR_LEVELING_LEGACY_EMULATION_PAGE_COUNT); ++i) {
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status = FLASH_ErasePage(WEAR_LEVELING_LEGACY_EMULATION_BASE_PAGE_ADDRESS + (i * (WEAR_LEVELING_LEGACY_EMULATION_PAGE_SIZE)));
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if (status != FLASH_COMPLETE) {
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ret = false;
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}
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}
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bs_dprintf("Backing store erase took %ldms to complete\n", ((long)(timer_read32() - start)));
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return ret;
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}
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bool backing_store_write(uint32_t address, backing_store_int_t value) {
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uint32_t offset = ((WEAR_LEVELING_LEGACY_EMULATION_BASE_PAGE_ADDRESS) + address);
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bs_dprintf("Write ");
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wl_dump(offset, &value, sizeof(backing_store_int_t));
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return FLASH_ProgramHalfWord(offset, ~value) == FLASH_COMPLETE;
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}
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bool backing_store_lock(void) {
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bs_dprintf("Lock \n");
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FLASH_Lock();
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return true;
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}
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bool backing_store_read(uint32_t address, backing_store_int_t* value) {
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uint32_t offset = ((WEAR_LEVELING_LEGACY_EMULATION_BASE_PAGE_ADDRESS) + address);
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backing_store_int_t* loc = (backing_store_int_t*)offset;
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*value = ~(*loc);
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bs_dprintf("Read ");
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wl_dump(offset, loc, sizeof(backing_store_int_t));
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return true;
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}
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