[PATCH v2] riscv: Add option to print registers on exception

[Rick Chen]

> From: Sean Anderson [mailto:seanga2 at gmail.com]
> Sent: Wednesday, December 25, 2019 1:28 PM
> To: U-Boot Mailing List
> Cc: Rick Jian-Zhi Chen(陳建志)
> Subject: [PATCH v2] riscv: Add option to print registers on exception
>
> When debugging, it can be helpful to see more information about an unhandled exception. This patch adds an option to view the registers at the time of the trap, similar to the linux output on a kernel panic.
>
> Signed-off-by: Sean Anderson <seanga2 at gmail.com>
> ---
> Changes for v2:
>    - Renamed "PC" to "EPC"
>
>  arch/riscv/Kconfig          |  3 +++
>  arch/riscv/cpu/mtrap.S      |  3 ++-
>  arch/riscv/lib/interrupts.c | 50 +++++++++++++++++++++++++++++--------
>  3 files changed, 44 insertions(+), 12 deletions(-)
>

Reviewed-by: Rick Chen <rick at andestech.com>