]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
MIPS: CPS: Early debug using an ns16550-compatible UART
authorPaul Burton <paul.burton@imgtec.com>
Tue, 22 Sep 2015 18:12:11 +0000 (11:12 -0700)
committerRalf Baechle <ralf@linux-mips.org>
Wed, 11 Nov 2015 07:34:25 +0000 (08:34 +0100)
commit609cf6f2291a69d09aa5c02d74cd4488b19aa9a6
tree3c17a4ce3e1fe4f5b932116802ef5eaa70afab85
parent195cee92afcb20b2156437e98b144d94812e4afd
MIPS: CPS: Early debug using an ns16550-compatible UART

Provide support for outputting early debug information, in the form of
various register values should an exception occur, during the early
bringup of secondary cores. This code requires an ns16550-compatible
UART accessible from the secondary core, and is written in assembly due
to the environment in which such early exceptions occur where way may
not have a stack, be coherent or even have initialised caches.

[ralf@linux-mips.org: Fix merge conflict.]

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11202/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/Kconfig.debug
arch/mips/include/asm/mipsregs.h
arch/mips/kernel/Makefile
arch/mips/kernel/cps-vec-ns16550.S [new file with mode: 0644]
arch/mips/kernel/cps-vec.S