SPIFlashDecoder.h

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* libscopeprotocols                                                                                                    *
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* Copyright (c) 2012-2025 Andrew D. Zonenberg and contributors                                                         *
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#ifndef SPIFlashDecoder_h
#define SPIFlashDecoder_h
 
#include "../scopehal/PacketDecoder.h"
 
class SPIFlashSymbol
{
public:
 
    enum FlashType
    {
        //Generic
        TYPE_COMMAND,
        TYPE_ADDRESS,
        TYPE_DATA,
 
        TYPE_DUMMY,
 
        //ID codes
        TYPE_VENDOR_ID,
        TYPE_PART_ID,
 
        //Winbond W25N specific
        TYPE_W25N_BLOCK_ADDR,
        TYPE_W25N_SR_ADDR,          //address of a status register
        TYPE_W25N_SR_STATUS,
        TYPE_W25N_SR_CONFIG,
        TYPE_W25N_SR_PROT
 
    } m_type;
 
    enum FlashCommand
    {
        CMD_READ_STATUS_REGISTER,
        CMD_READ_STATUS_REGISTER_1,
        CMD_READ_STATUS_REGISTER_2,
        CMD_READ_STATUS_REGISTER_3,
        CMD_WRITE_STATUS_REGISTER,
        CMD_READ_JEDEC_ID,
        CMD_READ,           //Read, SPI address, SPI data
        CMD_FAST_READ,      //Fast read, SPI mode, with pipeline delay
        CMD_READ_1_1_4,     //Fast read, SPI address, QSPI data
        CMD_READ_1_4_4,     //Fast read, QSPI address, QSPI data
        CMD_RESET,
        CMD_MODE_RESET,
        CMD_WRITE_ENABLE,
        CMD_WRITE_DISABLE,
        CMD_BLOCK_ERASE,
        CMD_PAGE_PROGRAM,
        CMD_QUAD_PAGE_PROGRAM,
        CMD_READ_SFDP,      //read serial flash discovery parameters
        CMD_ADDR_32BIT,
        CMD_ADDR_24BIT,
        CMD_RELEASE_PD,
        CMD_ENABLE_RESET,
 
        //Winbond W25N specific
        CMD_W25N_READ_PAGE,
        CMD_W25N_PROGRAM_EXECUTE,
 
        CMD_UNKNOWN
    } m_cmd;
 
    uint32_t m_data;
 
    SPIFlashSymbol()
    {}
 
    SPIFlashSymbol(FlashType type, FlashCommand cmd, uint32_t data)
     : m_type(type)
     , m_cmd(cmd)
     , m_data(data)
    {}
 
    bool operator== (const SPIFlashSymbol& s) const
    {
        return (m_type == s.m_type) && (m_cmd == s.m_cmd) && (m_data == s.m_data);
    }
};
 
class SPIFlashWaveform : public SparseWaveform<SPIFlashSymbol>
{
public:
    SPIFlashWaveform () : SparseWaveform<SPIFlashSymbol>() {};
    virtual std::string GetText(size_t) override;
    virtual std::string GetColor(size_t) override;
};
 
class SPIFlashDecoder : public PacketDecoder
{
public:
    SPIFlashDecoder(const std::string& color);
    virtual ~SPIFlashDecoder();
 
    virtual void Refresh() override;
 
    std::vector<std::string> GetHeaders() override;
 
    static std::string GetProtocolName();
 
    virtual bool ValidateChannel(size_t i, StreamDescriptor stream) override;
 
    enum VendorIDs
    {
        VENDOR_ID_CYPRESS   = 0x01,
        VENDOR_ID_MICRON    = 0x20,
        VENDOR_ID_WINBOND   = 0xef
    };
 
    enum FlashType
    {
        FLASH_TYPE_GENERIC_3BYTE_ADDRESS,
        FLASH_TYPE_GENERIC_4BYTE_ADDRESS,
        FLASH_TYPE_WINBOND_W25N
    };
 
    virtual bool CanMerge(Packet* first, Packet* cur, Packet* next) override;
    virtual Packet* CreateMergedHeader(Packet* pack, size_t i) override;
 
    PROTOCOL_DECODER_INITPROC(SPIFlashDecoder)
 
 
    static std::string GetPartID(SPIFlashWaveform* cap, const SPIFlashSymbol& s, int i);
 
protected:
    std::string m_typename;
    std::string m_outfile;
 
    std::string m_cachedfname;
    FILE* m_fpOut;
};
 
#endif