MIPS: Malta: use generic 8250 early console

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This patch switches Malta from using the MIPS implementation of early
printk with Malta's prom_putchar to using the generic 8250_early
implementation. This offers a couple of advantages:

  - We duplicate less generic code.

  - The UART can be initialised rather than being reliant upon
    inheriting a valid setup from the bootloader.

The Malta console_config function is extended to initialise the early
console if no earlycon= kernel parameter is provided, inheriting the
modetty0 bootloader environment if present and falling back to a
default 38400n8r setup if not. This matches the behaviour used for the
regular console= parameter.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6183/

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Paul Burton 2013-12-02 16:48:38 +00:00 • committed by Ralf Baechle

parent ae0d7cbc99

commit 23a91de41c

4 changed files with 33 additions and 75 deletions

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1

arch/mips/Kconfig

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2

arch/mips/mti-malta/Makefile

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47

arch/mips/mti-malta/malta-console.c

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58

arch/mips/mti-malta/malta-init.c

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