Spi Flash; Figure 5-1 Spi Flash Content - SMART Embedded Computing COMX-P2020 BSP User Manual

5.4.9

SPI Flash

COMX-P2020 has an on-module SPI socket with 4MB SPI FLASH M25P32-VMW6
installed. It can be used to store U-boot and environment arguments. The content of SPI
Flash is list as below:

Figure 5-1 SPI Flash Content

The U-boot provides the standard command "sf" to check, read, erase and write SPI Flash.
This part is not included in this document.
=> help sf
sf - SPI flash sub-system
Usage:
sf probe [bus:]cs [hz] [mode]
sf read addr offset len
sf write addr offset len
sf erase offset len
COMX-P2020 BSP User Guide (6806800L84C)
- init flash device on given SPI bus
and chip select
- read `len' bytes starting at
`offset' to memory at `addr'
- write `len' bytes from memory
at `addr' to flash at `offset'
- erase `len' bytes from `offset'
U-boot Deployment
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