mirror of
https://github.com/dougg3/mac-rom-simm-programmer.git
synced 2024-12-01 19:50:18 +00:00
2e4e303c0c
I can't use GPLv2 as soon as I need to start using the Nuvoton sample code which is licensed with an Apache 2.0 license.
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*
|
|
* parallel_flash.h
|
|
*
|
|
* Created on: Nov 25, 2011
|
|
* Author: Doug
|
|
*
|
|
* Copyright (C) 2011-2023 Doug Brown
|
|
*
|
|
* 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 3 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 <https://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef DRIVERS_PARALLEL_FLASH_H_
|
|
#define DRIVERS_PARALLEL_FLASH_H_
|
|
|
|
#include "../hal/parallel_bus.h"
|
|
|
|
/// The number of chips we are simultaneously addressing
|
|
#define PARALLEL_FLASH_NUM_CHIPS 4
|
|
|
|
/// Masks for functions that want a chip mask...
|
|
#define IC1 (1 << 3)
|
|
#define IC2 (1 << 2)
|
|
#define IC3 (1 << 1)
|
|
#define IC4 (1 << 0)
|
|
#define ALL_CHIPS (IC1 | IC2 | IC3 | IC4)
|
|
|
|
/// Holds info about the chip (retrieved with JEDEC standards)
|
|
typedef struct ParallelFlashChipID
|
|
{
|
|
/// The manufacturer ID
|
|
uint8_t manufacturer;
|
|
/// The device ID
|
|
uint8_t device;
|
|
} ParallelFlashChipID;
|
|
|
|
/// Type/layout of chips currently being addressed
|
|
typedef enum ParallelFlashChipType
|
|
{
|
|
/// Four SST39SF040 chips, 512 KB each, for a total of 2 MB
|
|
ParallelFlash_SST39SF040_x4,
|
|
/// Four M29F160FB5AN6E2 chips, 2 MB each, in 8-bit mode, for a total of 8 MB
|
|
ParallelFlash_M29F160FB5AN6E2_x4,
|
|
} ParallelFlashChipType;
|
|
|
|
// Tells which type of flash chip we are communicating with
|
|
void ParallelFlash_SetChipType(ParallelFlashChipType type);
|
|
ParallelFlashChipType ParallelFlash_ChipType(void);
|
|
|
|
// Reads a set of data from all 4 chips simultaneously
|
|
void ParallelFlash_Read(uint32_t startAddress, uint32_t *buf, uint16_t len);
|
|
|
|
// Does an unlock sequence on the chips requested
|
|
void ParallelFlash_UnlockChips(uint8_t chipsMask);
|
|
|
|
// Identifies all four chips
|
|
void ParallelFlash_IdentifyChips(ParallelFlashChipID *chips);
|
|
|
|
// Erases the chips/sectors requested
|
|
void ParallelFlash_EraseChips(uint8_t chipsMask);
|
|
bool ParallelFlash_EraseSectors(uint32_t address, uint32_t length, uint8_t chipsMask);
|
|
|
|
// Writes a buffer to all 4 chips simultaneously (each uint32_t contains an 8-bit portion for each chip).
|
|
// Optimized variant of this function if we know we're writing to all 4 chips simultaneously.
|
|
// Allows us to bypass a lot of operations involving "chipsMask".
|
|
void ParallelFlash_WriteAllChips(uint32_t startAddress, uint32_t const *buf, uint16_t len);
|
|
|
|
// Writes a buffer to a mask of requested chips (each uint32_t contains an 8-bit portion for each chip).
|
|
void ParallelFlash_WriteSomeChips(uint32_t startAddress, uint32_t const *buf, uint16_t len, uint8_t chipsMask);
|
|
|
|
#endif /* DRIVERS_PARALLEL_FLASH_H_ */
|