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nodemcu-firmware/app/platform/flash_api.c

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/******************************************************************************
* Flash api for NodeMCU
* NodeMCU Team
* 2014-12-31
*******************************************************************************/
#include "user_config.h"
#include "flash_api.h"
#include "spi_flash.h"
#include "c_stdio.h"
uint32_t flash_detect_size_byte(void)
{
#define FLASH_BUFFER_SIZE_DETECT 32
uint32_t dummy_size = FLASH_SIZE_256KBYTE;
uint8_t data_orig[FLASH_BUFFER_SIZE_DETECT] ICACHE_STORE_ATTR = {0};
uint8_t data_new[FLASH_BUFFER_SIZE_DETECT] ICACHE_STORE_ATTR = {0};
if (SPI_FLASH_RESULT_OK == flash_safe_read(0, (uint32 *)data_orig, FLASH_BUFFER_SIZE_DETECT))
{
dummy_size = FLASH_SIZE_256KBYTE;
while ((dummy_size < FLASH_SIZE_16MBYTE) &&
(SPI_FLASH_RESULT_OK == flash_safe_read(dummy_size, (uint32 *)data_new, FLASH_BUFFER_SIZE_DETECT)) &&
(0 != os_memcmp(data_orig, data_new, FLASH_BUFFER_SIZE_DETECT))
)
{
dummy_size *= 2;
}
};
return dummy_size;
#undef FLASH_BUFFER_SIZE_DETECT
}
uint32_t flash_safe_get_size_byte(void)
{
static uint32_t flash_size = 0;
if (flash_size == 0)
{
flash_size = flash_detect_size_byte();
}
return flash_size;
}
uint16_t flash_safe_get_sec_num(void)
{
return (flash_safe_get_size_byte() / (SPI_FLASH_SEC_SIZE));
}
SpiFlashOpResult flash_safe_read(uint32 src_addr, uint32 *des_addr, uint32 size)
{
SpiFlashOpResult result = SPI_FLASH_RESULT_ERR;
FLASH_SAFEMODE_ENTER();
result = spi_flash_read(src_addr, (uint32 *) des_addr, size);
FLASH_SAFEMODE_LEAVE();
return result;
}
SpiFlashOpResult flash_safe_write(uint32 des_addr, uint32 *src_addr, uint32 size)
{
SpiFlashOpResult result = SPI_FLASH_RESULT_ERR;
FLASH_SAFEMODE_ENTER();
result = spi_flash_write(des_addr, src_addr, size);
FLASH_SAFEMODE_LEAVE();
return result;
}
SpiFlashOpResult flash_safe_erase_sector(uint16 sec)
{
SpiFlashOpResult result = SPI_FLASH_RESULT_ERR;
FLASH_SAFEMODE_ENTER();
result = spi_flash_erase_sector(sec);
FLASH_SAFEMODE_LEAVE();
return result;
}
SPIFlashInfo flash_rom_getinfo(void)
{
volatile SPIFlashInfo spi_flash_info ICACHE_STORE_ATTR;
spi_flash_read(0, (uint32 *)(& spi_flash_info), sizeof(spi_flash_info));
return spi_flash_info;
}
uint8_t flash_rom_get_size_type(void)
{
return flash_rom_getinfo().size;
}
uint32_t flash_rom_get_size_byte(void)
{
static uint32_t flash_size = 0;
if (flash_size == 0)
{
switch (flash_rom_getinfo().size)
{
case SIZE_2MBIT:
// 2Mbit, 256kByte
flash_size = 256 * 1024;
break;
case SIZE_4MBIT:
// 4Mbit, 512kByte
flash_size = 512 * 1024;
break;
case SIZE_8MBIT:
// 8Mbit, 1MByte
flash_size = 1 * 1024 * 1024;
break;
case SIZE_16MBIT:
// 16Mbit, 2MByte
flash_size = 2 * 1024 * 1024;
break;
case SIZE_32MBIT:
// 32Mbit, 4MByte
flash_size = 4 * 1024 * 1024;
break;
case SIZE_16MBIT_8M_8M:
// 16Mbit, 2MByte
flash_size = 2 * 1024 * 1024;
break;
case SIZE_32MBIT_8M_8M:
// 32Mbit, 4MByte
flash_size = 4 * 1024 * 1024;
break;
default:
// Unknown flash size, fall back mode.
flash_size = 512 * 1024;
break;
}
}
return flash_size;
}
bool flash_rom_set_size_type(uint8_t size)
{
// Dangerous, here are dinosaur infested!!!!!
// Reboot required!!!
// If you don't know what you're doing, your nodemcu may turn into stone ...
NODE_DBG("\nBEGIN SET FLASH HEADER\n");
uint8_t data[SPI_FLASH_SEC_SIZE] ICACHE_STORE_ATTR;
if (SPI_FLASH_RESULT_OK == spi_flash_read(0, (uint32 *)data, SPI_FLASH_SEC_SIZE))
{
((SPIFlashInfo *)(&data[0]))->size = size;
if (SPI_FLASH_RESULT_OK == spi_flash_erase_sector(0 * SPI_FLASH_SEC_SIZE))
{
NODE_DBG("\nERASE SUCCESS\n");
}
if (SPI_FLASH_RESULT_OK == spi_flash_write(0, (uint32 *)data, SPI_FLASH_SEC_SIZE))
{
NODE_DBG("\nWRITE SUCCESS, %u\n", size);
}
}
NODE_DBG("\nEND SET FLASH HEADER\n");
return true;
}
bool flash_rom_set_size_byte(uint32_t size)
{
// Dangerous, here are dinosaur infested!!!!!
// Reboot required!!!
// If you don't know what you're doing, your nodemcu may turn into stone ...
bool result = true;
uint32_t flash_size = 0;
switch (size)
{
case 256 * 1024:
// 2Mbit, 256kByte
flash_size = SIZE_2MBIT;
flash_rom_set_size_type(flash_size);
break;
case 512 * 1024:
// 4Mbit, 512kByte
flash_size = SIZE_4MBIT;
flash_rom_set_size_type(flash_size);
break;
case 1 * 1024 * 1024:
// 8Mbit, 1MByte
flash_size = SIZE_8MBIT;
flash_rom_set_size_type(flash_size);
break;
case 2 * 1024 * 1024:
// 16Mbit, 2MByte
flash_size = SIZE_16MBIT;
flash_rom_set_size_type(flash_size);
break;
case 4 * 1024 * 1024:
// 32Mbit, 4MByte
flash_size = SIZE_32MBIT;
flash_rom_set_size_type(flash_size);
break;
/*
case 8 * 1024 * 1024:
// 64Mbit, 8MByte
flash_size = SIZE_16MBIT_8M_8M;
flash_rom_set_size_type(flash_size);
break;
case 16 * 1024 * 1024:
// 128Mbit, 16MByte
flash_size = SIZE_32MBIT_8M_8M;
flash_rom_set_size_type(flash_size);
break;
*/
default:
// Unknown flash size.
result = false;
break;
}
return result;
}
uint16_t flash_rom_get_sec_num(void)
{
//static uint16_t sec_num = 0;
// return flash_rom_get_size_byte() / (SPI_FLASH_SEC_SIZE);
// c_printf("\nflash_rom_get_size_byte()=%d\n", ( flash_rom_get_size_byte() / (SPI_FLASH_SEC_SIZE) ));
// if( sec_num == 0 )
//{
// sec_num = 4 * 1024 * 1024 / (SPI_FLASH_SEC_SIZE);
//}
//return sec_num;
return ( flash_rom_get_size_byte() / (SPI_FLASH_SEC_SIZE) );
}
uint8_t flash_rom_get_mode(void)
{
SPIFlashInfo spi_flash_info = flash_rom_getinfo();
switch (spi_flash_info.mode)
{
// Reserved for future use
case MODE_QIO:
break;
case MODE_QOUT:
break;
case MODE_DIO:
break;
case MODE_DOUT:
break;
}
return spi_flash_info.mode;
}
uint32_t flash_rom_get_speed(void)
{
uint32_t speed = 0;
SPIFlashInfo spi_flash_info = flash_rom_getinfo();
switch (spi_flash_info.speed)
{
case SPEED_40MHZ:
// 40MHz
speed = 40000000;
break;
case SPEED_26MHZ:
//26.7MHz
speed = 26700000;
break;
case SPEED_20MHZ:
// 20MHz
speed = 20000000;
break;
case SPEED_80MHZ:
//80MHz
speed = 80000000;
break;
}
return speed;
}
bool flash_rom_set_speed(uint32_t speed)
{
// Dangerous, here are dinosaur infested!!!!!
// Reboot required!!!
// If you don't know what you're doing, your nodemcu may turn into stone ...
NODE_DBG("\nBEGIN SET FLASH HEADER\n");
uint8_t data[SPI_FLASH_SEC_SIZE] ICACHE_STORE_ATTR;
uint8_t speed_type = SPEED_40MHZ;
if (speed < 26700000)
{
speed_type = SPEED_20MHZ;
}
else if (speed < 40000000)
{
speed_type = SPEED_26MHZ;
}
else if (speed < 80000000)
{
speed_type = SPEED_40MHZ;
}
else if (speed >= 80000000)
{
speed_type = SPEED_80MHZ;
}
if (SPI_FLASH_RESULT_OK == spi_flash_read(0, (uint32 *)data, SPI_FLASH_SEC_SIZE))
{
((SPIFlashInfo *)(&data[0]))->speed = speed_type;
if (SPI_FLASH_RESULT_OK == spi_flash_erase_sector(0 * SPI_FLASH_SEC_SIZE))
{
NODE_DBG("\nERASE SUCCESS\n");
}
if (SPI_FLASH_RESULT_OK == spi_flash_write(0, (uint32 *)data, SPI_FLASH_SEC_SIZE))
{
NODE_DBG("\nWRITE SUCCESS, %u\n", speed_type);
}
}
NODE_DBG("\nEND SET FLASH HEADER\n");
return true;
}
uint8_t byte_of_aligned_array(const uint8_t *aligned_array, uint32_t index)
{
if ( (((uint32_t)aligned_array) % 4) != 0 )
{
NODE_DBG("aligned_array is not 4-byte aligned.\n");
return 0;
}
volatile uint32_t v = ((uint32_t *)aligned_array)[ index / 4 ];
uint8_t *p = (uint8_t *) (&v);
return p[ (index % 4) ];
}
uint16_t word_of_aligned_array(const uint16_t *aligned_array, uint32_t index)
{
if ( (((uint32_t)aligned_array) % 4) != 0 )
{
NODE_DBG("aligned_array is not 4-byte aligned.\n");
return 0;
}
volatile uint32_t v = ((uint32_t *)aligned_array)[ index / 2 ];
uint16_t *p = (uint16_t *) (&v);
return (index % 2 == 0) ? p[ 0 ] : p[ 1 ];
// return p[ (index % 2) ]; // -- why error???
// (byte_of_aligned_array((uint8_t *)aligned_array, index * 2 + 1) << 8) | byte_of_aligned_array((uint8_t *)aligned_array, index * 2);
}
// uint8_t flash_rom_get_checksum(void)
// {
// // SPIFlashInfo spi_flash_info ICACHE_STORE_ATTR = flash_rom_getinfo();
// // uint32_t address = sizeof(spi_flash_info) + spi_flash_info.segment_size;
// // uint32_t address_aligned_4bytes = (address + 3) & 0xFFFFFFFC;
// // uint8_t buffer[64] = {0};
// // spi_flash_read(address, (uint32 *) buffer, 64);
// // uint8_t i = 0;
// // c_printf("\nBEGIN DUMP\n");
// // for (i = 0; i < 64; i++)
// // {
// // c_printf("%02x," , buffer[i]);
// // }
// // i = (address + 0x10) & 0x10 - 1;
// // c_printf("\nSIZE:%d CHECK SUM:%02x\n", spi_flash_info.segment_size, buffer[i]);
// // c_printf("\nEND DUMP\n");
// // return buffer[0];
// return 0;
// }
// uint8_t flash_rom_calc_checksum(void)
// {
// return 0;
// }
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