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spiFlash: add flash_model, method to convert len to block protect and block protect to len

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This commit is contained in:
Gwenhael Goavec-Merou
2021-10-10 18:26:04 +02:00
parent 22c095547e
commit ddcf8fd1b1
2 changed files with 106 additions and 27 deletions
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src/spiFlash.cpp
+75 -24
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@@ -7,12 +7,13 @@
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <cmath>
#include <iostream>
#include "ftdipp_mpsse.hpp"
#include "progressBar.hpp"
#include "display.hpp"
#include "spiFlash.hpp"
#include "spiFlashdb.hpp"
#include "spiInterface.hpp"
/* read/write status register : 0B addr + 0 dummy */
@@ -55,8 +56,10 @@
/* Global Block Protection unlock */
#define FLASH_ULBPR 0x98
SPIFlash::SPIFlash(SPIInterface *spi, int8_t verbose):_spi(spi), _verbose(verbose)
SPIFlash::SPIFlash(SPIInterface *spi, int8_t verbose):_spi(spi),
_verbose(verbose), _jedec_id(0), _flash_model(NULL)
{
read_id();
}
int SPIFlash::bulk_erase()
@@ -281,30 +284,39 @@ void SPIFlash::read_id()
if (_verbose > 0)
printf("read %x\n", _jedec_id);
auto t = flash_list.find(_jedec_id >> 8);
if (t != flash_list.end()) {
_flash_model = &(*t).second;
char content[256];
snprintf(content, 256, "Detected: %s %s %u sectors size: %uMb",
_flash_model->manufacturer.c_str(), _flash_model->model.c_str(),
_flash_model->nr_sector, _flash_model->nr_sector * 0x80000 / 1048576);
printInfo(content);
} else {
/* read extented */
if ((_jedec_id & 0xff) != 0) {
has_edid = true;
len += (_jedec_id & 0x0ff);
_spi->spi_put(0x9F, NULL, rx, len);
}
/* read extented */
if ((_jedec_id & 0xff) != 0) {
has_edid = true;
len += (_jedec_id & 0x0ff);
_spi->spi_put(0x9F, NULL, rx, len);
}
/* must be 0x20BA1810 ... */
/* must be 0x20BA1810 ... */
printf("Detail: \n");
printf("Jedec ID : %02x\n", rx[0]);
printf("memory type : %02x\n", rx[1]);
printf("memory capacity : %02x\n", rx[2]);
if (has_edid) {
printf("EDID + CFD length : %02x\n", rx[3]);
printf("EDID : %02x%02x\n", rx[5], rx[4]);
printf("CFD : ");
if (_verbose > 0) {
for (int i = 6; i < len; i++)
printf("%02x ", rx[i]);
printf("\n");
} else {
printf("\n");
printf("Detail: \n");
printf("Jedec ID : %02x\n", rx[0]);
printf("memory type : %02x\n", rx[1]);
printf("memory capacity : %02x\n", rx[2]);
if (has_edid) {
printf("EDID + CFD length : %02x\n", rx[3]);
printf("EDID : %02x%02x\n", rx[5], rx[4]);
printf("CFD : ");
if (_verbose > 0) {
for (int i = 6; i < len; i++)
printf("%02x ", rx[i]);
printf("\n");
} else {
printf("\n");
}
}
}
}
@@ -391,6 +403,45 @@ int SPIFlash::disable_protection()
return 0;
}
/* convert bp area (status register) to len in byte */
uint32_t SPIFlash::bp_to_len(uint8_t bp)
{
/* 0 -> no sectors protected */
if (bp == 0)
return 0;
/* reconstruct code based on each BPx bit */
uint8_t tmp = 0;
for (int i = 0; i < 4; i++)
if ((bp & _flash_model->bp_offset[i]))
tmp |= (1 << i);
/* bp code is 2^(bp-1) sectors */
uint16_t nr_sectors = (1 << (tmp-1));
return nr_sectors * 0x10000;
}
/* convert len (in byte) to bp (sector protection) */
uint8_t SPIFlash::len_to_bp(uint32_t len)
{
/* 0 -> no sector to protect */
if (len == 0)
return 0;
/* round and divide by sector size */
len = ((len + 0xffff) & ~0xffff) / 0x10000;
/* convert size to basic BP code */
uint8_t bp = 1 + static_cast<int>(ceil(log2(len)));
/* reconstruct code based on each BPx bit */
uint8_t tmp = 0;
for (int i = 0; i < 4; i++)
if (bp >> i)
tmp |= _flash_model->bp_offset[i];
return tmp;
}
/* microchip SST26VF032B has a dedicated register
* to read sectors (un)lock status and another one to unlock
* sectors