mirror of https://github.com/google/pebble
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <stdint.h>
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#include "drivers/flash.h"
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//! An address in the flash address space
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typedef uint32_t FlashAddress;
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//! This is the memory mapped region that's mapped to the parallel flash.
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static const uintptr_t FMC_BANK_1_BASE_ADDRESS = 0x60000000;
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//! This is the unit that we use for erasing
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static const uint32_t SECTOR_SIZE_BYTES = 0x20000; // 128kb
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//! This is the unit that we use for writing
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static const uint32_t PAGE_SIZE_BYTES = 64;
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//! Different commands we can send to the flash
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typedef enum S29VSCommand {
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S29VSCommand_WriteBufferLoad = 0x25,
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S29VSCommand_BufferToFlash = 0x29,
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S29VSCommand_ReadStatusRegister = 0x70,
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S29VSCommand_ClearStatusRegister = 0x71,
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S29VSCommand_EraseSetup = 0x80,
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S29VSCommand_DeviceIDEntry = 0x90,
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S29VSCommand_CFIEntry = 0x98,
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S29VSCommand_ConfigureRegisterEntry = 0xD0,
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S29VSCommand_SoftwareReset = 0xF0
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} S29VSCommand;
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//! Arguments to the S29VSCommand_EraseSetup command
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typedef enum S29VSCommandEraseArguments {
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S29VSCommandEraseArguments_ChipErase = 0x10,
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S29VSCommandEraseArguments_SectorErase = 0x30
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} S29VSCommandEraseArguments;
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//! The bitset stored in the status register, see flash_s29vs_read_status_register
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typedef enum S29VSStatusBit {
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S29VSStatusBit_BankStatus = 0x00,
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S29VSStatusBit_SectorLockStatus = 0x01,
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S29VSStatusBit_ProgramSuspended = 0x02,
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// 0x04 is unused
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S29VSStatusBit_ProgramStatus = 0x10,
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S29VSStatusBit_EraseStatus = 0x20,
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S29VSStatusBit_EraseSuspended = 0x40,
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S29VSStatusBit_DeviceReady = 0x80,
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} S29VSStatusBit;
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