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libpayload/x86/exception: Add ability to handle user defined interrupts

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I need to setup the APIC timer to fire interrupts. I would like to reuse
the existing interrupt table. So I extended it to support user defined
interrupts. I just added all 255 vectors so there wouldn't need to be
any additional build time configuration.

I'm going to deprecate exception_install_hook and remove it in a follow
up. It will be replaced with set_interrupt_handler. This way the
exception lookup does not have to manage a list of callbacks, or have to
worry about the order they are processed.

BUG=b:109749762
TEST=Wrote an interrupt handler and fired an APIC timer interrupt and
verified that vector 32 was returned.

Change-Id: Id9c2583c7c3d9be4a06a25e546e64399f2b0620c
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/28100
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Raul E Rangel
2018-08-22 10:03:05 -06:00
committed by Patrick Georgi
parent 28cee59ca2
commit 80d5c19590
3 changed files with 47 additions and 1 deletions
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4
payloads/libpayload/include/exception.h
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@ -36,6 +36,10 @@
typedef int (*exception_hook)(u32 type);
void exception_init(void);
/* Deprecated, use set_interrupt_handler. */
void exception_install_hook(exception_hook h);
typedef void (*interrupt_handler)(u8 vector);
void set_interrupt_handler(u8 vector, interrupt_handler handler);
#endif