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u-boot/board/congatec/conga-qeval20-qa3-e3845
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Simon Glass 984639039f Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE 
The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-10-31 11:01:31 -04:00
..
acpi SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
.gitignore board: .gitignore: replace dsdt.c by dsdt_generated.c 2022-03-08 08:42:43 -05:00
conga-qeval20-qa3.c common: Move some board functions out of common.h 2019-12-02 18:25:21 -05:00
dsdt.asl SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
Kconfig Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE 2022-10-31 11:01:31 -04:00
MAINTAINERS x86: Add defconfig for theadorable-x86-conga with PCIe x4 blobs 2017-08-08 21:13:07 +08:00
Makefile scripts: Makefile.lib: generate dsdt_generated.c instead of dsdt.c 2022-02-25 11:21:24 -05:00
README x86: conga-qeval20-qa3: Add README to explain the console UART options 2016-10-11 11:55:33 +08:00

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.