388 lines
15 KiB
C
388 lines
15 KiB
C
/*
|
||
* This file is part of the Serial Flash Universal Driver Library.
|
||
*
|
||
* Copyright (c) 2016, Armink, <armink.ztl@gmail.com>
|
||
*
|
||
* Permission is hereby granted, free of charge, to any person obtaining
|
||
* a copy of this software and associated documentation files (the
|
||
* 'Software'), to deal in the Software without restriction, including
|
||
* without limitation the rights to use, copy, modify, merge, publish,
|
||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||
* permit persons to whom the Software is furnished to do so, subject to
|
||
* the following conditions:
|
||
*
|
||
* The above copyright notice and this permission notice shall be
|
||
* included in all copies or substantial portions of the Software.
|
||
*
|
||
* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
|
||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||
*
|
||
* Function: Analyze the SFDP (Serial Flash Discoverable Parameters) which from JESD216/A/B (V1.X) standard.
|
||
* JESD216 (V1.0) document: http://www.jedec.org/sites/default/files/docs/JESD216.pdf
|
||
* JESD216A (V1.5) document: http://www.jedec.org/sites/default/files/docs/JESD216A.pdf
|
||
* JESD216B (V1.6) document: http://www.jedec.org/sites/default/files/docs/JESD216B.pdf
|
||
*
|
||
* Created on: 2016-05-26
|
||
*/
|
||
|
||
#include "../inc/sfud.h"
|
||
|
||
/**
|
||
* JEDEC Standard JESD216 Terms and definitions:
|
||
*
|
||
* DWORD: Four consecutive 8-bit bytes used as the basic 32-bit building block for headers and parameter tables.
|
||
*
|
||
* Sector: The minimum granularity - size and alignment - of an area that can be erased in the data array
|
||
* of a flash memory device. Different areas within the address range of the data array may have a different
|
||
* minimum erase granularity (sector size).
|
||
*/
|
||
|
||
#ifdef SFUD_USING_SFDP
|
||
|
||
/* support maximum SFDP major revision by driver */
|
||
#define SUPPORT_MAX_SFDP_MAJOR_REV 1
|
||
/* the JEDEC basic flash parameter table length is 9 DWORDs (288-bit) on JESD216 (V1.0) initial release standard */
|
||
#define BASIC_TABLE_LEN 9
|
||
/* the smallest eraser in SFDP eraser table */
|
||
#define SMALLEST_ERASER_INDEX 0
|
||
/**
|
||
* SFDP parameter header structure
|
||
*/
|
||
typedef struct {
|
||
uint8_t id; /**< Parameter ID LSB */
|
||
uint8_t minor_rev; /**< Parameter minor revision */
|
||
uint8_t major_rev; /**< Parameter major revision */
|
||
uint8_t len; /**< Parameter table length(in double words) */
|
||
uint32_t ptp; /**< Parameter table 24bit pointer (byte address) */
|
||
} sfdp_para_header;
|
||
|
||
static sfud_err read_sfdp_data(const sfud_flash *flash, uint32_t addr, uint8_t *read_buf, size_t size);
|
||
static bool read_sfdp_header(sfud_flash *flash);
|
||
static bool read_basic_header(const sfud_flash *flash, sfdp_para_header *basic_header);
|
||
static bool read_basic_table(sfud_flash *flash, sfdp_para_header *basic_header);
|
||
|
||
/* ../port/sfup_port.c */
|
||
extern void sfud_log_debug(const char *file, const long line, const char *format, ...);
|
||
extern void sfud_log_info(const char *format, ...);
|
||
|
||
/**
|
||
* Read SFDP parameter information
|
||
*
|
||
* @param flash flash device
|
||
*
|
||
* @return true: read OK
|
||
*/
|
||
bool sfud_read_sfdp(sfud_flash *flash) {
|
||
SFUD_ASSERT(flash);
|
||
|
||
/* JEDEC basic flash parameter header */
|
||
sfdp_para_header basic_header;
|
||
if (read_sfdp_header(flash) && read_basic_header(flash, &basic_header)) {
|
||
return read_basic_table(flash, &basic_header);
|
||
} else {
|
||
SFUD_INFO("Warning: Read SFDP parameter header information failed. The %s is not support JEDEC SFDP.", flash->name);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Read SFDP parameter header
|
||
*
|
||
* @param flash flash device
|
||
*
|
||
* @return true: read OK
|
||
*/
|
||
static bool read_sfdp_header(sfud_flash *flash) {
|
||
sfud_sfdp *sfdp = &flash->sfdp;
|
||
/* The SFDP header is located at address 000000h of the SFDP data structure.
|
||
* It identifies the SFDP Signature, the number of parameter headers, and the SFDP revision numbers. */
|
||
/* sfdp parameter header address */
|
||
uint32_t header_addr = 0;
|
||
/* each parameter header being 2 DWORDs (64-bit) */
|
||
uint8_t header[2 * 4] = { 0 };
|
||
|
||
SFUD_ASSERT(flash);
|
||
|
||
sfdp->available = false;
|
||
/* read SFDP header */
|
||
if (read_sfdp_data(flash, header_addr, header, sizeof(header)) != SFUD_SUCCESS) {
|
||
SFUD_INFO("Error: Can't read SFDP header.");
|
||
return false;
|
||
}
|
||
/* check SFDP header */
|
||
if (!(header[0] == 'S' &&
|
||
header[1] == 'F' &&
|
||
header[2] == 'D' &&
|
||
header[3] == 'P')) {
|
||
SFUD_DEBUG("Error: Check SFDP signature error. It's must be 50444653h('S' 'F' 'D' 'P').");
|
||
return false;
|
||
}
|
||
sfdp->minor_rev = header[4];
|
||
sfdp->major_rev = header[5];
|
||
if (sfdp->major_rev > SUPPORT_MAX_SFDP_MAJOR_REV) {
|
||
SFUD_INFO("Error: This reversion(V%d.%d) SFDP is not supported.", sfdp->major_rev, sfdp->minor_rev);
|
||
return false;
|
||
}
|
||
SFUD_DEBUG("Check SFDP header is OK. The reversion is V%d.%d, NPN is %d.", sfdp->major_rev, sfdp->minor_rev,
|
||
header[6]);
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Read JEDEC basic parameter header
|
||
*
|
||
* @param flash flash device
|
||
*
|
||
* @return true: read OK
|
||
*/
|
||
static bool read_basic_header(const sfud_flash *flash, sfdp_para_header *basic_header) {
|
||
/* The basic parameter header is mandatory, is defined by this standard, and starts at byte offset 08h. */
|
||
uint32_t header_addr = 8;
|
||
/* each parameter header being 2 DWORDs (64-bit) */
|
||
uint8_t header[2 * 4] = { 0 };
|
||
|
||
SFUD_ASSERT(flash);
|
||
SFUD_ASSERT(basic_header);
|
||
|
||
/* read JEDEC basic flash parameter header */
|
||
if (read_sfdp_data(flash, header_addr, header, sizeof(header)) != SFUD_SUCCESS) {
|
||
SFUD_INFO("Error: Can't read JEDEC basic flash parameter header.");
|
||
return false;
|
||
}
|
||
basic_header->id = header[0];
|
||
basic_header->minor_rev = header[1];
|
||
basic_header->major_rev = header[2];
|
||
basic_header->len = header[3];
|
||
basic_header->ptp = (long)header[4] | (long)header[5] << 8 | (long)header[6] << 16;
|
||
/* check JEDEC basic flash parameter header */
|
||
if (basic_header->major_rev > SUPPORT_MAX_SFDP_MAJOR_REV) {
|
||
SFUD_INFO("Error: This reversion(V%d.%d) JEDEC basic flash parameter header is not supported.",
|
||
basic_header->major_rev, basic_header->minor_rev);
|
||
return false;
|
||
}
|
||
if (basic_header->len < BASIC_TABLE_LEN) {
|
||
SFUD_INFO("Error: The JEDEC basic flash parameter table length (now is %d) error.", basic_header->len);
|
||
return false;
|
||
}
|
||
SFUD_DEBUG("Check JEDEC basic flash parameter header is OK. The table id is %d, reversion is V%d.%d,"
|
||
" length is %d, parameter table pointer is 0x%06lX.", basic_header->id, basic_header->major_rev,
|
||
basic_header->minor_rev, basic_header->len, basic_header->ptp);
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Read JEDEC basic parameter table
|
||
*
|
||
* @param flash flash device
|
||
*
|
||
* @return true: read OK
|
||
*/
|
||
static bool read_basic_table(sfud_flash *flash, sfdp_para_header *basic_header) {
|
||
sfud_sfdp *sfdp = &flash->sfdp;
|
||
/* parameter table address */
|
||
uint32_t table_addr = basic_header->ptp;
|
||
/* parameter table */
|
||
uint8_t table[BASIC_TABLE_LEN * 4] = { 0 }, i, j;
|
||
|
||
SFUD_ASSERT(flash);
|
||
SFUD_ASSERT(basic_header);
|
||
|
||
/* read JEDEC basic flash parameter table */
|
||
if (read_sfdp_data(flash, table_addr, table, sizeof(table)) != SFUD_SUCCESS) {
|
||
SFUD_INFO("Warning: Can't read JEDEC basic flash parameter table.");
|
||
return false;
|
||
}
|
||
/* print JEDEC basic flash parameter table info */
|
||
SFUD_DEBUG("JEDEC basic flash parameter table info:");
|
||
SFUD_DEBUG("MSB-LSB 3 2 1 0");
|
||
for (i = 0; i < BASIC_TABLE_LEN; i++) {
|
||
SFUD_DEBUG("[%04d] 0x%02X 0x%02X 0x%02X 0x%02X", i + 1, table[i * 4 + 3], table[i * 4 + 2], table[i * 4 + 1],
|
||
table[i * 4]);
|
||
}
|
||
|
||
/* get block/sector 4 KB erase supported and command */
|
||
sfdp->erase_4k_cmd = table[1];
|
||
switch (table[0] & 0x03) {
|
||
case 1:
|
||
sfdp->erase_4k = true;
|
||
SFUD_DEBUG("4 KB Erase is supported throughout the device. Command is 0x%02X.", sfdp->erase_4k_cmd);
|
||
break;
|
||
case 3:
|
||
sfdp->erase_4k = false;
|
||
SFUD_DEBUG("Uniform 4 KB erase is unavailable for this device.");
|
||
break;
|
||
default:
|
||
SFUD_INFO("Error: Uniform 4 KB erase supported information error.");
|
||
return false;
|
||
}
|
||
/* get write granularity */
|
||
//TODO ĿǰΪ 1.0 <20><><EFBFBD>ṩ<EFBFBD>ķ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><D6A7> V1.5 <20><><EFBFBD><EFBFBD><EFBFBD>ϵķ<CFB5>ʽ<EFBFBD><CABD>ȡ page size
|
||
switch ((table[0] & (0x01 << 2)) >> 2) {
|
||
case 0:
|
||
sfdp->write_gran = 1;
|
||
SFUD_DEBUG("Write granularity is 1 byte.");
|
||
break;
|
||
case 1:
|
||
sfdp->write_gran = 256;
|
||
SFUD_DEBUG("Write granularity is 64 bytes or larger.");
|
||
break;
|
||
}
|
||
/* volatile status register block protect bits */
|
||
switch ((table[0] & (0x01 << 3)) >> 3) {
|
||
case 0:
|
||
/* Block Protect bits in device's status register are solely non-volatile or may be
|
||
* programmed either as volatile using the 50h instruction for write enable or non-volatile
|
||
* using the 06h instruction for write enable.
|
||
*/
|
||
sfdp->sr_is_non_vola = true;
|
||
SFUD_DEBUG("Target flash status register is non-volatile.");
|
||
break;
|
||
case 1:
|
||
/* block protect bits in device's status register are solely volatile. */
|
||
sfdp->sr_is_non_vola = false;
|
||
SFUD_DEBUG("Block Protect bits in device's status register are solely volatile.");
|
||
/* write enable instruction select for writing to volatile status register */
|
||
switch ((table[0] & (0x01 << 4)) >> 4) {
|
||
case 0:
|
||
sfdp->vola_sr_we_cmd = SFUD_VOLATILE_SR_WRITE_ENABLE;
|
||
SFUD_DEBUG("Flash device requires instruction 50h as the write enable prior "
|
||
"to performing a volatile write to the status register.");
|
||
break;
|
||
case 1:
|
||
sfdp->vola_sr_we_cmd = SFUD_CMD_WRITE_ENABLE;
|
||
SFUD_DEBUG("Flash device requires instruction 06h as the write enable prior "
|
||
"to performing a volatile write to the status register.");
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
/* get address bytes, number of bytes used in addressing flash array read, write and erase. */
|
||
switch ((table[2] & (0x03 << 1)) >> 1) {
|
||
case 0:
|
||
sfdp->addr_3_byte = true;
|
||
sfdp->addr_4_byte = false;
|
||
SFUD_DEBUG("3-Byte only addressing.");
|
||
break;
|
||
case 1:
|
||
sfdp->addr_3_byte = true;
|
||
sfdp->addr_4_byte = true;
|
||
SFUD_DEBUG("3- or 4-Byte addressing.");
|
||
break;
|
||
case 2:
|
||
sfdp->addr_3_byte = false;
|
||
sfdp->addr_4_byte = true;
|
||
SFUD_DEBUG("4-Byte only addressing.");
|
||
break;
|
||
default:
|
||
sfdp->addr_3_byte = false;
|
||
sfdp->addr_4_byte = false;
|
||
SFUD_INFO("Error: Read address bytes error!");
|
||
return false;
|
||
}
|
||
/* get flash memory capacity */
|
||
uint32_t table2_temp = ((long)table[7] << 24) | ((long)table[6] << 16) | ((long)table[5] << 8) | (long)table[4];
|
||
switch ((table[7] & (0x01 << 7)) >> 7) {
|
||
case 0:
|
||
sfdp->capacity = 1 + (table2_temp >> 3);
|
||
break;
|
||
case 1:
|
||
table2_temp &= 0x7FFFFFFF;
|
||
if (table2_temp > sizeof(sfdp->capacity) * 8 + 3) {
|
||
sfdp->capacity = 0;
|
||
SFUD_INFO("Error: The flash capacity is grater than 32 Gb/ 4 GB! Not Supported.");
|
||
return false;
|
||
}
|
||
sfdp->capacity = 1L << (table2_temp - 3);
|
||
break;
|
||
}
|
||
SFUD_DEBUG("Capacity is %ld Bytes.", sfdp->capacity);
|
||
/* get erase size and erase command */
|
||
for (i = 0, j = 0; i < SFUD_SFDP_ERASE_TYPE_MAX_NUM; i++) {
|
||
if (table[28 + 2 * i] != 0x00) {
|
||
sfdp->eraser[j].size = 1L << table[28 + 2 * i];
|
||
sfdp->eraser[j].cmd = table[28 + 2 * i + 1];
|
||
SFUD_DEBUG("Flash device supports %ldKB block erase. Command is 0x%02X.", sfdp->eraser[j].size / 1024,
|
||
sfdp->eraser[j].cmd);
|
||
j++;
|
||
}
|
||
}
|
||
/* sort the eraser size from small to large */
|
||
for (i = 0, j = 0; i < SFUD_SFDP_ERASE_TYPE_MAX_NUM; i++) {
|
||
if (sfdp->eraser[i].size) {
|
||
for (j = i + 1; j < SFUD_SFDP_ERASE_TYPE_MAX_NUM; j++) {
|
||
if (sfdp->eraser[j].size != 0 && sfdp->eraser[i].size > sfdp->eraser[j].size) {
|
||
/* swap the small eraser */
|
||
uint32_t temp_size = sfdp->eraser[i].size;
|
||
uint8_t temp_cmd = sfdp->eraser[i].cmd;
|
||
sfdp->eraser[i].size = sfdp->eraser[j].size;
|
||
sfdp->eraser[i].cmd = sfdp->eraser[j].cmd;
|
||
sfdp->eraser[j].size = temp_size;
|
||
sfdp->eraser[j].cmd = temp_cmd;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
sfdp->available = true;
|
||
return true;
|
||
}
|
||
|
||
static sfud_err read_sfdp_data(const sfud_flash *flash, uint32_t addr, uint8_t *read_buf, size_t size) {
|
||
uint8_t cmd[] = {
|
||
SFUD_CMD_READ_SFDP_REGISTER,
|
||
(addr >> 16) & 0xFF,
|
||
(addr >> 8) & 0xFF,
|
||
(addr >> 0) & 0xFF,
|
||
SFUD_DUMMY_DATA,
|
||
};
|
||
|
||
SFUD_ASSERT(flash);
|
||
SFUD_ASSERT(addr < 1L << 24);
|
||
SFUD_ASSERT(read_buf);
|
||
SFUD_ASSERT(flash->spi.wr);
|
||
|
||
return flash->spi.wr(&flash->spi, cmd, sizeof(cmd), read_buf, size);
|
||
}
|
||
|
||
/**
|
||
* get the most suitable eraser for erase process from SFDP parameter
|
||
*
|
||
* @param flash flash device
|
||
* @param addr start address
|
||
* @param erase_size will be erased size
|
||
*
|
||
* @return the eraser index of SFDP eraser table @see sfud_sfdp.eraser[]
|
||
*/
|
||
size_t sfud_sfdp_get_suitable_eraser(const sfud_flash *flash, uint32_t addr, size_t erase_size) {
|
||
size_t index = SMALLEST_ERASER_INDEX, i;
|
||
/* only used when flash supported SFDP */
|
||
SFUD_ASSERT(flash->sfdp.available);
|
||
/* the address isn't align by smallest eraser's size, then use the smallest eraser */
|
||
if (addr % flash->sfdp.eraser[SMALLEST_ERASER_INDEX].size) {
|
||
return SMALLEST_ERASER_INDEX;
|
||
}
|
||
/* Find the suitable eraser.
|
||
* The largest size eraser is at the end of eraser table.
|
||
* In order to decrease erase command counts, so the find process is from the end of eraser table. */
|
||
for (i = SFUD_SFDP_ERASE_TYPE_MAX_NUM - 1;; i--) {
|
||
if ((flash->sfdp.eraser[i].size != 0) && (erase_size >= flash->sfdp.eraser[i].size)
|
||
&& (addr % flash->sfdp.eraser[i].size == 0)) {
|
||
index = i;
|
||
break;
|
||
}
|
||
if (i == SMALLEST_ERASER_INDEX) {
|
||
break;
|
||
}
|
||
}
|
||
return index;
|
||
}
|
||
|
||
#endif /* SFUD_USING_SFDP */
|