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u-boot/board/congatec/conga-qeval20-qa3-e3845
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Bin Meng 252d41f1ae x86: baytrail: Drop EFI-specific test logics 
Now that we have generic EFI payload support, drop EFI-specific test
logics in BayTrail Kconfig and codes, and all BayTrail boards too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-06-17 21:16:04 +08:00
..
acpi SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
.gitignore x86: baytrail: Add .gitignore for ACPI enabled boards 2016-05-23 15:18:00 +08:00
conga-qeval20-qa3.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
dsdt.asl SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Kconfig x86: baytrail: Drop EFI-specific test logics 2018-06-17 21:16:04 +08:00
MAINTAINERS x86: Add defconfig for theadorable-x86-conga with PCIe x4 blobs 2017-08-08 21:13:07 +08:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
README x86: conga-qeval20-qa3: Add README to explain the console UART options 2016-10-11 11:55:33 +08:00
start.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00

README 

------------------------------
U-Boot console UART selection:
------------------------------

The U-Boot port for this congatec board currently supports two different
configurations (defconfig files). The only difference is the UART that
is used as the U-Boot console UART. The default defconfig file:

conga-qeval20-qa3-e3845_defconfig

provides this console on the UART0 which is provided via a Winbond
Super-IO chip connected on the congatec Qseven 2.0 evaluation carrier
board (conga-QEVAL). This UART is the one provided with a SubD9
connector on the mainboard (the low one). The 2nd defconfig file:

conga-qeval20-qa3-e3845-internal-uart_defconfig

provides the U-Boot console on the BayTrail internal legacy UART,
which is routed from the QSeven SoM to the X300 connector on the
baseboard. Here is called COM2. The baseboard already provides the
RS232 level shifters. So a TTL-USB UART adapter does not work in
this case. The signals need to get connected directly to the
RS232 level signals of the PC UART via some adapter cable.