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| author | Paul Burton <paul.burton@imgtec.com> | 2015-09-22 20:12:11 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-11-11 08:34:25 +0100 |
| commit | 609cf6f2291a69d09aa5c02d74cd4488b19aa9a6 (patch) | |
| tree | 3c17a4ce3e1fe4f5b932116802ef5eaa70afab85 /arch/mips/include | |
| parent | MIPS: Fix duplicate CP0_* definitions. (diff) | |
| download | linux-609cf6f2291a69d09aa5c02d74cd4488b19aa9a6.tar.xz linux-609cf6f2291a69d09aa5c02d74cd4488b19aa9a6.zip | |
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>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/mipsregs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index f935e15adcc6..69f8ec548eac 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -52,6 +52,7 @@ #define CP0_INFO $7 #define CP0_HWRENA $7, 0 #define CP0_BADVADDR $8 +#define CP0_BADINSTR $8, 1 #define CP0_COUNT $9 #define CP0_ENTRYHI $10 #define CP0_COMPARE $11 @@ -59,6 +60,8 @@ #define CP0_CAUSE $13 #define CP0_EPC $14 #define CP0_PRID $15 +#define CP0_EBASE $15, 1 +#define CP0_CMGCRBASE $15, 3 #define CP0_CONFIG $16 #define CP0_CONFIG3 $16, 3 #define CP0_CONFIG5 $16, 5 |