Re: [PATCH 0/6] DT early console initialization

Grant Likely
2014-05-14T14:26:53Z

On Thu, 8 May 2014 17:23:37 -0500, Rob Herring <robherring2@gmail.com> wrote:
> From: Rob Herring <robh@kernel.org>
>
> This series adds support for early serial console initialization using
> DT. This enables determining the serial port type and address using the
> FDT and allows enabling the console before platform specific
> initialization runs. I've tested this on arm64. ARM support is dependent
> on adding fixmap support.
>
> Currently, the earlycon is only enabled if "earlycon" is present on the
> kernel command line. The FDT needs to have /chosen/stdout-path set to
> the path of the serial port.
>
> This series is dependent on generic earlycon[1], libfdt support[2], and
> vmlinux.lds.h clean-ups[3]. The first 2 are in linux-next already. A git
> branch is available here:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git earlycon-dt

Nice. For the whole series:

Acked-by: Grant Likely <grant.likely@linaro.org>

I haven't tested it though.

>
> Rob
>
> [1] https://lkml.org/lkml/2014/4/18/573
> [2] https://lkml.org/lkml/2014/4/22/1202
> [3] https://lkml.org/lkml/2014/3/27/285
>
> Rob Herring (6):
> of: align RESERVEDMEM_OF_DECLARE function callbacks to other callbacks
> of: consolidate linker section OF match table declarations
> serial: earlycon: add DT support
> of/fdt: add FDT address translation support
> of/fdt: add FDT serial scanning for earlycon
> tty/serial: pl011: add DT based earlycon support
>
> drivers/clocksource/clksrc-of.c | 2 +-
> drivers/irqchip/irqchip.h | 7 +-
> drivers/of/Makefile | 2 +
> drivers/of/fdt.c | 56 +++++++++
> drivers/of/fdt_address.c | 241 ++++++++++++++++++++++++++++++++++++++
> drivers/of/of_reserved_mem.c | 2 +-
> drivers/tty/serial/amba-pl011.c | 1 +
> drivers/tty/serial/earlycon.c | 27 +++++
> include/asm-generic/vmlinux.lds.h | 4 +-
> include/linux/clk-provider.h | 5 +-
> include/linux/clocksource.h | 16 +--
> include/linux/of.h | 22 ++++
> include/linux/of_fdt.h | 1 +
> include/linux/of_reserved_mem.h | 22 +---
> include/linux/serial_core.h | 6 +
> 15 files changed, 372 insertions(+), 42 deletions(-)
> create mode 100644 drivers/of/fdt_address.c
>
> --
> 1.9.1
>