Nico Huber has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/32025
Change subject: [WIP] mb/roda/rk9: Document flash header ......................................................................
[WIP] mb/roda/rk9: Document flash header
Change-Id: I5bd131635340ffa0c6b8979fc8e263fc5f09fdc5 --- A Documentation/mainboard/roda/rk9/flash_header.md 1 file changed, 23 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/32025/1
diff --git a/Documentation/mainboard/roda/rk9/flash_header.md b/Documentation/mainboard/roda/rk9/flash_header.md new file mode 100644 index 0000000..26efcb4 --- /dev/null +++ b/Documentation/mainboard/roda/rk9/flash_header.md @@ -0,0 +1,23 @@ +Flash Header +============ + +There is a 5x2 pin, 1.27mm pitch header "J1" south of the BIOS flash. It +follows the pinout of the Dediprog adaptor board: + + +------+ + | 1 2 | 1: HOLD 2 2: CS 2 + | 3 4 | 3: CS 1 4: VCC + | 5 6 | 5: MISO 6: HOLD 1 + | 7 8 | 7: 8: CLK + | 9 10 | 9: GND 10: MOSI + +------+ + +Pins 3 to 10 directly map to the regular SPI flash pinout. + +There is also a JP17 around. Ideally, it should be closed during +programming (isolates the SPI bus from the southbridge): + + +---+ + | 1 | 1: SF100-I/O3 + | 2 | 2: GND + +---+