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/* -*- c++ -*- */
/*
* Copyright 2009 Free Software Foundation, Inc.
* Copyright 2009 Ettus Research LLC
*
* 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/>.
*/
#ifndef INCLUDED_SPI_FLASH_PRIVATE_H
#define INCLUDED_SPI_FLASH_PRIVATE_H
#include "spi_flash.h"
#include "spi.h"
#include "memory_map.h"
#include <string.h>
/* M25P64 et al. */
#define WREN_CMD 0x06 // write enable
#define WRDI_CMD 0x04 // write disable
#define RDID_CMD 0x9f // read identification
#define RDSR_CMD 0x05 // read status register
#define WRSR_CMD 0x01 // write status register
#define READ_CMD 0x03
#define FAST_READ_CMD 0x0b
#define PP_CMD 0x02 // page program (256 bytes)
#define SE_CMD 0xd8 // sector erase (64KB)
#define BE_CMD 0xc7 // bulk erase (all)
#define RES_CMD 0xab // read electronic sig (deprecated)
/* Status register bits */
#define SR_SRWD 0x80
#define SR_BP2 0x10 // block protect bit 2
#define SR_BP1 0x08 // block protect bit 1
#define SR_BP0 0x04 // block protect bit 0
#define SR_WEL 0x02 // Write Enable Latch
#define SR_WIP 0x01 // Write in Progress. Set if busy w/ program or erase cycle.
#define FLAGS (SPIF_PUSH_FALL | SPIF_LATCH_RISE)
#define LEN(x) ((x) & SPI_CTRL_CHAR_LEN_MASK)
static inline uint32_t
min(uint32_t a, uint32_t b)
{
return a < b ? a : b;
}
static inline uint32_t
round_down(uint32_t x, uint32_t power_of_2)
{
return x & -power_of_2;
}
#endif /* INCLUDED_SPI_FLASH_PRIVATE_H */
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