Commit graph

62 commits

Author SHA1 Message Date
Simon Glass
bf6e702232 exynos: Add debug UART support for Samsung S5P serial
Add a debug UART implementation for this serial driver. It does not set up
pinmux automatically - this must be done before calling debug_uart_init().

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05 21:06:11 -06:00
Simon Glass
275854baee efi: Add a serial driver
Add a serial driver which makes use of EFI's console in/out service.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested on Intel Crown Bay and QEMU
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05 08:44:05 -06:00
Simon Glass
dcfe4a54ed x86: Move CONFIG_X86_SERIAL to Kconfig
Move this config option to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05 08:42:42 -06:00
Simon Glass
af28224546 sandbox: Move CONFIG_SANDBOX_SERIAL to Kconfig
Move this over to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-10 19:26:55 -06:00
Masahiro Yamada
b6ef3a3f04 ARM: UniPhier: update the vendor name of UniPhier in Kconfig
The business for UniPhier Soc family has been transferred from
Panasonic Corporation to Socionext Inc.

Update the SoC select menu in Kconfig.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-31 02:55:30 +09:00
Simon Glass
dd0b0122ba serial: ns16550: Add an option to specify the debug UART register shift
This UART permits different register spacing. To support the debug UART on
devices which have a spacing other than 1 byte, allow the shift value to
be specified.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-22 20:03:41 -06:00
Simon Glass
21d004368f serial: ns16550: Support debug UART
Add debug UART functions to permit ns16550 to provide an early debug UART.
Try to avoid using the stack so that this can be called from assembler before
a stack is set up (at least on ARM and PowerPC).

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-19 06:20:28 -07:00
Simon Glass
2f964aa7b1 serial: Support an early UART for debugging
This came up in a discussion on the mailing list here:

https://patchwork.ozlabs.org/patch/384613/

My concerns at the time were:
- it doesn't need to be written in assembler
- it doesn't need to be ARM-specific

This patch provides a possible alternative. It works by allowing any serial
driver to export one init function and provide a putc() function. These
can be used to output debug data before the real serial driver is available.

This implementation does not depend on driver model, and it is possible for
it to operate without a stack on some architectures (e.g. PowerPC, ARM). It
provides the same features as the ARM-specific debug.S but with more UART
and architecture support.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-19 06:20:25 -07:00
Simon Glass
f94a1bed07 dm: Expand and complete Kconfig in drivers/
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-12 10:35:33 -07:00
Masahiro Yamada
ff247b7a0d serial: uniphier: move CONFIG_UNIPHIER_SERIAL to Kconfig
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-10-23 21:43:09 -06:00
Masahiro Yamada
da333ae73c dm: add entries to Kconfig
Create entries of CONFIG_DM, CONFIG_DM_SERIAL, CONFIG_DM_GPIO
and CONFIG_DM_SPI.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-10-23 21:43:09 -06:00
Masahiro Yamada
ed36323f6d kconfig: add blank Kconfig files
This would be useful to start moving various config options.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2014-09-24 18:30:28 -04:00