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docs/mb/supermicro/x11ssm-f: rework flashing section 

The board can be flashed without adding a diode by just leaving VCC
unconnected. Rework the flashing section to describes that.

Change-Id: I37d55ffdbcfba4f3a1113a82f16ec8766bbb6e6c
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52679
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Michael Niewöhner 2021-04-26 23:46:53 +02:00 committed by Patrick Georgi
parent bd64f8ef2e
commit f3e82459a8
1 changed files with 8 additions and 3 deletions
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11
Documentation/mainboard/supermicro/x11-lga1151-series/x11ssm-f/x11ssm-f.md
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@ -4,9 +4,14 @@ This section details how to run coreboot on the [Supermicro X11SSM-F].
## Flashing coreboot ## Flashing coreboot
The board can be flashed externally. FTDI FT2232H and FT232H based programmers worked. For this, The flash IC [MX25L12873F] can be found near PCH PCIe Slot 4.
one needs to add a diode between VCC and the flash chip. The flash IC [MX25L12873F] can be found
near PCH PCIe Slot 4. The board can be flashed externally with a SOIC test clip or probes. Since
there is no diode between VCC3.3 and the flash chip, so VCC must **not** be
connected. Instead, the flash chip is powered from VCC3.3, which is always-on
(even in S5). WP# and HOLD# have pull-ups and don't need to be connected.
FTDI FT2232H and FT232H based programmers worked.
Flashing is also possible through the BMC web interface, when a valid license was entered. Flashing is also possible through the BMC web interface, when a valid license was entered.