[coreboot] "Invalid OPCODE 0x06" while running flashrom with -V (verbose)

[Water Chen]

Hi,

Sometimes, I got "Invalid OPCODE 0x06" while running flashrom with -V (verbose)
on Supermicro X7DCL-3 / ICH9R / SST25VF016B.

After checking the codes, I found that OPCODE 0x06 (Write Enable) is not
available in OPMENU - Opcode Menu Configuration Register, but available in
PREOP - Prefix Opcode Configuration Register.

I think it's a bug of Write Enable. Is there someone who can fix it?

spi.h:
#define JEDEC_WREN		0x06

spi.c:
void spi_write_enable()
{
    const unsigned char cmd[JEDEC_WREN_OUTSIZE] = {JEDEC_WREN};

/* Send WREN (Write Enable) */
    spi_command(sizeof(cmd), 0, cmd, NULL);
}

ichspi.c:
OPCODES O_ST_M25P = {
    {
     JEDEC_WREN,
     0},
    {
     {JEDEC_BYTE_PROGRAM, SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS, 1},	// Write Byte
     {JEDEC_READ, SPI_OPCODE_TYPE_READ_WITH_ADDRESS, 0},	// Read Data
     {JEDEC_BE_D8, SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS, 1},	// Erase Sector
     {JEDEC_RDSR, SPI_OPCODE_TYPE_READ_NO_ADDRESS, 0},	// Read Device Status Reg
     {JEDEC_RES, SPI_OPCODE_TYPE_READ_WITH_ADDRESS, 0},	// Resume Deep Power-Down
     {JEDEC_WRSR, SPI_OPCODE_TYPE_WRITE_NO_ADDRESS, 1},	// Write Status Register
     {JEDEC_RDID, SPI_OPCODE_TYPE_READ_NO_ADDRESS, 0},	// Read JDEC ID
     {JEDEC_CE_C7, SPI_OPCODE_TYPE_WRITE_NO_ADDRESS, 1},	// Bulk erase
     }
};

int ich_spi_command(unsigned int writecnt, unsigned int readcnt,
    	    const unsigned char *writearr, unsigned char *readarr)
{
...
    if (opcode_index == -1) {
    	printf_debug("Invalid OPCODE 0x%02x\n", cmd);
    	return 1;
    }
...
}

Thank you.
Water Chen