diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2022-05-17 13:07:30 +0200 |
|---|---|---|
| committer | Arthur Heymans <arthur@aheymans.xyz> | 2022-06-01 13:40:20 +0000 |
| commit | fdf6d121f5382d116fd9d408525635348d64dd69 (patch) | |
| tree | 28503766bee50e84b1ad78ff729db68abdd4234d /src/drivers/intel/fsp2_0/notify.c | |
| parent | c055f3531407c06218e05973bc634d958aba779f (diff) | |
driver/intel/fsp2_0: Disable NULL deref code when calling FSP
FSP needs interrupts disable so also disable generating exceptions
around debug registers.
Change-Id: Ia49dde68d45b71e231aaf32a0e6fd847f0e06146
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64426
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/intel/fsp2_0/notify.c')
| -rw-r--r-- | src/drivers/intel/fsp2_0/notify.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp2_0/notify.c b/src/drivers/intel/fsp2_0/notify.c index 5cd63d8ec0..44e8795d91 100644 --- a/src/drivers/intel/fsp2_0/notify.c +++ b/src/drivers/intel/fsp2_0/notify.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <arch/null_breakpoint.h> #include <bootstate.h> #include <console/console.h> #include <cpu/x86/mtrr.h> @@ -75,10 +76,13 @@ static void fsp_notify(enum fsp_notify_phase phase) timestamp_add_now(data->timestamp_before); post_code(data->post_code_before); + /* FSP disables the interrupt handler so remove debug exceptions temporarily */ + null_breakpoint_disable(); if (ENV_X86_64 && CONFIG(PLATFORM_USES_FSP2_X86_32)) ret = protected_mode_call_1arg(fspnotify, (uintptr_t)¬ify_params); else ret = fspnotify(¬ify_params); + null_breakpoint_init(); timestamp_add_now(data->timestamp_after); post_code(data->post_code_after); |