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openFPGALoader
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spiFlash: erase using 4 or 64Kb

This commit is contained in:
Gwenhael Goavec-Merou 2021-10-20 08:00:21 +02:00
parent c043da874c
commit 859c1a1a0f
2 changed files with 56 additions and 9 deletions
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55
src/spiFlash.cpp
View File

@ -26,12 +26,16 @@
/* write [en|dis]able : 0B addr + 0 dummy */
#define FLASH_WRDIS 0x04
#define FLASH_WREN 0x06
/* sector (4Kb) erase */
#define FLASH_SE 0x20
/* write function register (at least ISSI) */
#define FLASH_WRFR 0x42
/* read function register (at least ISSI) */
#define FLASH_RDFR 0x48
/* Read OTP : 3 B addr + 8 clk cycle*/
#define FLASH_ROTP 0x4B
/* block (32Kb) erase */
#define FLASH_BE32 0x52
#define FLASH_POWER_UP 0xAB
#define FLASH_POWER_DOWN 0xB9
/* read/write non volatile register: 0B addr + 0 dummy */
@ -41,9 +45,9 @@
#define FLASH_RDVCR 0x85
#define FLASH_WRVCR 0x81
/* bulk erase */
#define FLASH_BE 0xC7
/* sector (64kb) erase */
#define FLASH_SE 0xD8
#define FLASH_CE 0xC7
/* block (64kb) erase */
#define FLASH_BE64 0xD8
/* read/write lock register : 3B addr + 0 dummy */
#define FLASH_WRLR 0xE5
#define FLASH_RDLR 0xE8
@ -71,10 +75,11 @@ int SPIFlash::bulk_erase()
{
if (write_enable() == -1)
return -1;
_spi->spi_put(FLASH_BE, NULL, NULL, 0);
_spi->spi_put(FLASH_CE, NULL, NULL, 0);
return _spi->spi_wait(FLASH_RDSR, FLASH_RDSR_WIP, 0x00, 100000, true);
}
/* sector -> subsector for micron */
int SPIFlash::sector_erase(int addr)
{
uint8_t tx[4];
@ -86,20 +91,54 @@ int SPIFlash::sector_erase(int addr)
return 0;
}
int SPIFlash::block32_erase(int addr)
{
uint8_t tx[4] = {
static_cast<uint8_t>(FLASH_BE32 ),
static_cast<uint8_t>(0xff & (addr >> 16)),
static_cast<uint8_t>(0xff & (addr >> 8)),
static_cast<uint8_t>(0xff & (addr ))};
_spi->spi_put(tx, NULL, 4);
return 0;
}
/* block64 -> sector for micron */
int SPIFlash::block64_erase(int addr)
{
uint8_t tx[4] = {
static_cast<uint8_t>(FLASH_BE64 ),
static_cast<uint8_t>(0xff & (addr >> 16)),
static_cast<uint8_t>(0xff & (addr >> 8)),
static_cast<uint8_t>(0xff & (addr ))};
_spi->spi_put(tx, NULL, 4);
return 0;
}
int SPIFlash::sectors_erase(int base_addr, int size)
{
int ret = 0;
int start_addr = base_addr;
int end_addr = (base_addr + size + 0xffff) & ~0xffff;
/* compute end_addr to be multiple of 4Kb */
int end_addr = (base_addr + size + 0xfff) & ~0xfff;
ProgressBar progress("Erasing", end_addr, 50, _verbose < 0);
/* start with block size (64Kb) */
int step = 0x10000;
for (int addr = start_addr; addr < end_addr; addr += 0x10000) {
for (int addr = start_addr; addr < end_addr; addr += step) {
if (write_enable() == -1) {
ret = -1;
break;
}
if (sector_erase(addr) == -1) {
ret = -1;
/* if block erase + addr end out of end_addr -> use sector_erase */
if (addr + 0x10000 > end_addr) {
step = 0x1000;
ret = sector_erase(addr);
} else {
ret = block64_erase(addr);
}
if (ret == -1) {
break;
}
if (_spi->spi_wait(FLASH_RDSR, FLASH_RDSR_WIP, 0x00, 100000, false) == -1) {

10
src/spiFlash.hpp
View File

@ -47,9 +47,17 @@ class SPIFlash {
/* erase */
int bulk_erase();
/*!
* \brief erase one sector (64Kb)
* \brief erase one sector (4Kb)
*/
int sector_erase(int addr);
/*!
* \brief erase one 32Kb block
*/
int block32_erase(int addr);
/*!
* \brief erase one 64Kb block
*/
int block64_erase(int addr);
/*!
* \brief erase n sectors starting at base_addr
*/