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sunxi: Fix CONFIG_UART0_PORT_F build and add it to menuconfig

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The CONFIG_UART0_PORT_F option has been supported since
    http://git.denx.de/?p=u-boot.git;a=commit;h=ff2b47f6a9cc1025

This option is primarily useful only for low level u-boot debugging
on tablets, where normal UART0 is difficult to access and requires
device disassembly and/or soldering.

This patch now allows it to be selected from menuconfig. A dependency on
SPL_FEL is added because u-boot does not support booting from NAND yet
and also booting from SD card is impossible when a MicroSD breakout board
is plugged into the SD slot.

Additionally a compilation problem is fixed:

common/spl/built-in.o: In function `spl_mmc_load_image':
/tmp/u-boot-sunxi/common/spl/spl_mmc.c:94: undefined reference to `mmc_initialize'
/tmp/u-boot-sunxi/common/spl/spl_mmc.c:96: undefined reference to `find_mmc_device'
/tmp/u-boot-sunxi/common/spl/spl_mmc.c:104: undefined reference to `mmc_init'
scripts/Makefile.spl:206: recipe for target 'spl/u-boot-spl' failed

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Siarhei Siamashka
2014-12-25 02:34:47 +02:00
committed by Hans de Goede
parent 1d7cd7bf7d
commit f0ce28e9ed
3 changed files with 16 additions and 1 deletions
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12
board/sunxi/Kconfig
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@@ -177,6 +177,18 @@ config SPL_FEL
depends on SPL
default n
config UART0_PORT_F
bool "UART0 on MicroSD breakout board"
depends on SPL_FEL
default n
---help---
Repurpose the SD card slot for getting access to the UART0 serial
console. Primarily useful only for low level u-boot debugging on
tablets, where normal UART0 is difficult to access and requires
device disassembly and/or soldering. As the SD card can't be used
at the same time, the system can be only booted in the FEL mode.
Only enable this if you really know what you are doing.
config FDTFILE
string "Default fdtfile env setting for this board"