Difference between revisions of "Minnowboard:SPI Boot flash"
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the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory. | the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory. | ||
− | + | {|border="3" | |
− | + | |+Programming Header | |
+ | !Pin number||Main Function||Note | ||
+ | |- | ||
+ | | 1 | ||
+ | | +3.3V Power | ||
+ | | Supports on +3.3V | ||
+ | |- | ||
+ | | 2 | ||
+ | | GND | ||
+ | | system ground | ||
+ | |- | ||
+ | | 3 | ||
+ | | nCS | ||
+ | | Chip Select Active Low | ||
+ | |- | ||
+ | | 4 | ||
+ | | SCK | ||
+ | | SPI Clock | ||
+ | |- | ||
+ | | 5 | ||
+ | | MISO | ||
+ | | Data Output from serial flash | ||
+ | |- | ||
+ | | 6 | ||
+ | | MOSI | ||
+ | | Data Input to serial flash | ||
+ | | 7 | ||
+ | | nPRG_EN | ||
+ | | Program Enable Active Low | ||
+ | |} | ||
= Applications and Hardware = | = Applications and Hardware = |
Revision as of 14:19, 15 May 2013
the MinnowBoard uses a SPI based serial flash memory to load the initial code into the Intel Atom E640 series processor. The MinnowBoard uses a WinBond W25Q32 (datasheet) which has a total of 4096KB of storage which can be flashed with a UEFI image or other custom firmware.
Programming Interface
the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory.
Pin number | Main Function | Note | |||
---|---|---|---|---|---|
1 | +3.3V Power | Supports on +3.3V | |||
2 | GND | system ground | |||
3 | nCS | Chip Select Active Low | |||
4 | SCK | SPI Clock | |||
5 | MISO | Data Output from serial flash | |||
6 | MOSI | Data Input to serial flash | 7 | nPRG_EN | Program Enable Active Low |
Applications and Hardware
- Flashrom is an open source utility that allows you to work with the SPI based serial flash memory on the MinnowBoard.
- Flashrom supports a wide range of flash devices (Supported Hardware) including the WinBond W25Q32.
- Flashrom can automatically detect the presence of the WinBond W25Q32 and provide full read/erase/write functionality.
- Flashrom can use the many open as well as proprietary hardware tools such as
- Flyswatter2 from TinCanTools
- Bus Pirate from Dangerous Prototypes
- SF100 from DediProg
- SPIDev userspace interface for the Linux Kernel