Hello hiren patel,
I am not sure how would you like to test from boot loader. If you are using u-boot and Freescale SDK, the boot loader support I2C sub-system and SPI flash sub-system command:
Usage:
i2c bus [muxtype:muxaddr:muxchannel] - show I2C bus info
crc32 chip address[.0, .1, .2] count - compute CRC32 checksum
i2c dev [dev] - show or set current I2C bus
i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device
i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device
i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)
i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)
i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)
i2c probe [address] - test for and show device(s) on the I2C bus
i2c read chip address[.0, .1, .2] length memaddress - read to memory
i2c write memaddress chip address[.0, .1, .2] length - write memory to i2c
i2c reset - re-init the I2C Controller
i2c speed [speed] - show or set I2C bus speed
Usage:
sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus and chip select
sf read addr offset len - read `len' bytes starting at `offset' to memory at `addr'
sf write addr offset len - write `len' bytes from memory at `addr' to flash at `offset'
sf erase offset [+]len - erase `len' bytes from `offset' `+len' round up `len' to block size
sf update addr offset len - erase and write `len' bytes from memory at `addr' to flash at `offset'
The drivers in u-boot:
\drivers\i2c\fsl_i2c.c
\drivers\spi\fsl_espi.c
Have a great day,
Lunmin
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