mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-03-29 16:33:07 +08:00
370 lines
8.4 KiB
C
370 lines
8.4 KiB
C
#include "flashmem.h"
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#define address_length 3
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/* here: use NCPS2 @ PA10: */
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#define SPI_CSR_NUM 2 // Chip Select register[] 0,1,2,3 (at91samv512 has 4)
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/* PCS_0 for NPCS0, PCS_1 for NPCS1 ... */
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#define PCS_0 ((0<<0)|(1<<1)|(1<<2)|(1<<3)) // 0xE - 1110
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#define PCS_1 ((1<<0)|(0<<1)|(1<<2)|(1<<3)) // 0xD - 1101
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#define PCS_2 ((1<<0)|(1<<1)|(0<<2)|(1<<3)) // 0xB - 1011
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#define PCS_3 ((1<<0)|(1<<1)|(1<<2)|(0<<3)) // 0x7 - 0111
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/* TODO: ## */
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#if (SPI_CSR_NUM == 0)
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#define SPI_MR_PCS PCS_0
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#elif (SPI_CSR_NUM == 1)
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#define SPI_MR_PCS PCS_1
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#elif (SPI_CSR_NUM == 2)
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#define SPI_MR_PCS PCS_2
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#elif (SPI_CSR_NUM == 3)
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#define SPI_MR_PCS PCS_3
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#else
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#error "SPI_CSR_NUM invalid"
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// not realy - when using an external address decoder...
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// but this code takes over the complete SPI-interace anyway
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#endif
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/*
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读取指令，可以从一个位置开始持续的读，最多能将整块芯片读取完
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页写指令，每次写入为1-256字节，但是不能跨越256字节边界
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擦除指令，擦除指令后必须将CS拉高，否则不会执行
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*/
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// 初始化Flash
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void FlashSetup()
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{
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// PA1 -> SPI_NCS3 chip select (MEM)
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// PA10 -> SPI_NCS2 chip select (LCD)
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// PA11 -> SPI_NCS0 chip select (FPGA)
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// PA12 -> SPI_MISO Master-In Slave-Out
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// PA13 -> SPI_MOSI Master-Out Slave-In
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// PA14 -> SPI_SPCK Serial Clock
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// Disable PIO control of the following pins, allows use by the SPI peripheral
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AT91C_BASE_PIOA->PIO_PDR = GPIO_NCS0 | GPIO_MISO | GPIO_MOSI | GPIO_SPCK | GPIO_NCS2;
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// Pull-up Enable
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AT91C_BASE_PIOA->PIO_PPUER = GPIO_NCS0 | GPIO_MISO | GPIO_MOSI | GPIO_SPCK | GPIO_NCS2;
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// Peripheral A
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AT91C_BASE_PIOA->PIO_ASR = GPIO_NCS0 | GPIO_MISO | GPIO_MOSI | GPIO_SPCK;
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// Peripheral B
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AT91C_BASE_PIOA->PIO_BSR |= GPIO_NCS2;
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//enable the SPI Peripheral clock
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_SPI);
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// Enable SPI
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AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
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// NPCS2 Mode 0
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AT91C_BASE_SPI->SPI_MR =
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( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
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(0xB << 16) | // Peripheral Chip Select (selects SPI_NCS2 or PA10)
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( 0 << 7) | // Local Loopback Disabled
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( 1 << 4) | // Mode Fault Detection disabled
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( 0 << 2) | // Chip selects connected directly to peripheral
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( 0 << 1) | // Fixed Peripheral Select
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( 1 << 0); // Master Mode
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// 8 bit
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AT91C_BASE_SPI->SPI_CSR[2] =
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( 0 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
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( 0 << 16) | // Delay Before SPCK (1 MCK period)
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( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
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( 0 << 4) | // Bits per Transfer (8 bits)
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( 1 << 3) | // Chip Select inactive after transfer
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( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
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( 0 << 0); // Clock Polarity inactive state is logic 0
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// read first, empty buffer
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if (AT91C_BASE_SPI->SPI_RDR == 0)
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;
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}
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// end up SPI
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void FlashStop(void)
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{
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//* Reset all the Chip Select register
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AT91C_BASE_SPI->SPI_CSR[0] = 0;
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AT91C_BASE_SPI->SPI_CSR[1] = 0;
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AT91C_BASE_SPI->SPI_CSR[2] = 0;
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AT91C_BASE_SPI->SPI_CSR[3] = 0;
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// Reset the SPI mode
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AT91C_BASE_SPI->SPI_MR = 0;
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// Disable all interrupts
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AT91C_BASE_SPI->SPI_IDR = 0xFFFFFFFF;
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// SPI disable
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AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIDIS;
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Dbprintf("FlashStop");
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}
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// 发送一个字节 send one byte
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uint16_t FlashSendByte(uint32_t data)
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{
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uint16_t incoming = 0;
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WDT_HIT();
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// wait until SPI is ready for transfer
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while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0) {};
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// send the data
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AT91C_BASE_SPI->SPI_TDR = data;
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// wait recive transfer is complete
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while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RDRF) == 0)
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WDT_HIT();
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// reading incoming data
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incoming = ((AT91C_BASE_SPI->SPI_RDR) & 0xFFFF);
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return incoming;
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}
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// send last one byte
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uint16_t FlashSendLastByte(uint32_t data) {
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return FlashSendByte(data | AT91C_SPI_LASTXFER);
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}
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// Read state register 1
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uint8_t Flash_ReadStat1(void) {
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FlashSendByte(READSTAT1);
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uint8_t stat1 = FlashSendLastByte(0xFF);
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Dbprintf("stat1 [%02x]", stat1);
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return stat1;
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}
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// Read state register 2
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uint8_t Flash_ReadStat2(void) {
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FlashSendByte(READSTAT2);
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uint8_t stat2 = FlashSendLastByte(0xFF);
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Dbprintf("stat2 [%02x]", stat2);
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return stat2;
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}
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// Determine whether FLASHMEM is busy
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bool Flash_CheckBusy(uint16_t times){
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bool bRet = (Flash_ReadStat1() & BUSY);
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if (!bRet || !times || !(times--))
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return bRet;
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while (times)
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{
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WDT_HIT();
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SpinDelayUs(1000); // wait 1ms
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bRet = (Flash_ReadStat1() & BUSY);
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if (!bRet)
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break;
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times--;
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}
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return bRet;
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}
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// read ID out
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uint8_t Flash_ReadID(void) {
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if (Flash_CheckBusy(1000))
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return 0;
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// Manufacture ID / device ID
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uint8_t t0 = FlashSendByte(ID);
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uint8_t t1 = FlashSendByte(0x00);
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uint8_t t2 = FlashSendByte(0x00);
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uint8_t t3 = FlashSendByte(0x00);
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uint8_t man_id = FlashSendByte(0xFF);
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uint8_t dev_id = FlashSendLastByte(0xFF);
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Dbprintf(" [%02x] %02x %02x %02x | %02x %02x", t0,t1,t2,t3, man_id, dev_id);
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//WINBOND_MANID
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if ( man_id == WINBOND_MANID ) {
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Dbprintf("Correct read of Manucaturer ID [%02x] == %02x", man_id, WINBOND_MANID);
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}
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if (man_id != WINBOND_MANID)
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dev_id = 0;
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return dev_id;
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}
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// 读取数据 address buffer length
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uint8_t Flash_ReadDate(uint32_t Address, uint8_t *Buffer, uint16_t len)
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{
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// length should never be zero
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if (!len || Flash_CheckBusy(1000))
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return 0;
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FlashSendByte(READDATA);
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FlashSendByte((Address >> 16) & 0xFF);
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FlashSendByte((Address >> 8) & 0xFF);
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FlashSendByte((Address >> 0) & 0xFF);
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uint16_t i = 0;
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for (; i < (len - 1); i++)
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Buffer[i] = FlashSendByte(0xFF);
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Buffer[i] = FlashSendLastByte(0xFF);
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return len;
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}
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// 写入数据 地址 address 缓冲区 buffer 长度length
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uint8_t Flash_WriteDate(uint32_t Address, uint8_t *Buffer, uint16_t len)
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{
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// length should never be zero
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if (!len || Flash_CheckBusy(1000))
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return 0;
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// 不能跨越 256 字节边界
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if (((Address & 255) + len) > 256)
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return 0;
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FlashSendByte(PAGEPROG);
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FlashSendByte((Address >> 16) & 0xFF);
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FlashSendByte((Address >> 8) & 0xFF);
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FlashSendByte((Address >> 0) & 0xFF);
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uint16_t i = 0;
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for (; i < (len - 1); i++)
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FlashSendByte(Buffer[i]);
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FlashSendLastByte(Buffer[i]);
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return len;
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}
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// enable the flash write
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void Flash_WriteEnable()
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{
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FlashSendLastByte(WRITEENABLE);
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Dbprintf("Flash WriteEnabled");
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}
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// erase 4K at one time
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bool Flash_Erase4k(uint32_t Address)
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{
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if (Address & (4096 - 1))
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{
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Dbprintf("Flash_Erase4k : Address is not align at 4096");
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return false;
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}
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FlashSendByte(SECTORERASE);
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FlashSendByte((Address >> 16) & 0xFF);
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FlashSendByte((Address >> 8) & 0xFF);
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FlashSendLastByte((Address >> 0) & 0xFF);
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return true;
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}
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// erase 32K at one time
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bool Flash_Erase32k(uint32_t Address)
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{
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if (Address & (32*1024 - 1))
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{
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Dbprintf("Flash_Erase4k : Address is not align at 4096");
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return false;
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}
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FlashSendByte(BLOCK32ERASE);
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FlashSendByte((Address >> 16) & 0xFF);
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FlashSendByte((Address >> 8) & 0xFF);
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FlashSendLastByte((Address >> 0) & 0xFF);
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return true;
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}
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// erase 64k at one time
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bool Flash_Erase64k(uint32_t Address)
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{
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if (Address & (64*1024 - 1))
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{
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Dbprintf("Flash_Erase4k : Address is not align at 4096");
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return false;
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}
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FlashSendByte(BLOCK64ERASE);
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FlashSendByte((Address >> 16) & 0xFF);
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FlashSendByte((Address >> 8) & 0xFF);
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FlashSendLastByte((Address >> 0) & 0xFF);
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return true;
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}
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// erase all
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void Flash_EraseChip(void)
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{
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FlashSendLastByte(CHIPERASE);
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}
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// initialize
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bool FlashInit(void)
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{
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FlashSetup();
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if (Flash_CheckBusy(1000))
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return false;
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Dbprintf("FlashInit");
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return true;
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}
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void EXFLASH_TEST(void)
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{
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uint8_t Data[256] = { 0x00, 0x01, 0x02 };
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uint8_t Data2[256] = { 0x00};
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uint32_t FlashSize = 0;
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if (!FlashInit()) return;
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Flash_ReadStat1();
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switch (Flash_ReadID())
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{
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case 0x11: // W25X20CL
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FlashSize = 2048*1024;
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break;
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case 0x10: // W25X10CL
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FlashSize = 1024*1024;
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break;
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case 0x05: // W25X05CL
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FlashSize = 512*1024;
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break;
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}
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Dbprintf("Flash Size = %dk", FlashSize / 1024);
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if (FlashSize != 2048*1024)
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return;
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Dbprintf("Flash test write: 012 to 0x00 0x01 0x02");
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Flash_WriteEnable();
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Flash_Erase4k(0x00);
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if (Flash_CheckBusy(1000))
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{
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Dbprintf("Flash_Erase4k CheckBusy Error.");
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return;
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}
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Flash_ReadDate(0, Data2, 256);
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Flash_WriteEnable();
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Flash_WriteDate(0x12, Data, sizeof(Data)); // this will never run, cuz out of 256byte boundary
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Flash_WriteDate(0x12, Data, 3);
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if (Flash_CheckBusy(1000))
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{
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Dbprintf("Flash_WriteDate CheckBusy Error.");
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return;
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}
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Flash_ReadDate(0, Data2, 256);
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FlashStop();
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}
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