GodMode9/arm9/source/system/spiflash.h

#pragma once
/*
 *   This file is part of fastboot 3DS
 *   Copyright (C) 2017 derrek, profi200
 *
 *   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 <http://www.gnu.org/licenses/>.
 */

#include "common.h"

#include "arm.h"
#include "pxi.h"

#define NVRAM_SIZE  0x20000 // 1 Mbit (128kiB)

// true if spiflash is installed, false otherwise
static inline bool spiflash_get_status(void)
{ // there should probably be a command for this...
	return true;
}

static inline void spiflash_read(u32 offset, u32 size, u8 *buf)
{
	u32 args[] = {offset, (u32)buf, size};
	ARM_WbDC_Range(buf, size);
	ARM_DSB();
	PXI_DoCMD(PXI_NVRAM_READ, args, 3);
	ARM_InvDC_Range(buf, size);
}