diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-06-16 20:10:47 +0000 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-06-16 21:17:42 +0000 |
| commit | 2ebea2d4278e8c002b04620d5f5aa4a4b26f8893 (patch) | |
| tree | 347e3e1cf5af392d17c880eb241797c803a97d35 /src/cpu/x86/lapic/lapic.c | |
| parent | 02c565b35aa4fe686f81b62927e33b4cd5f2d735 (diff) | |
Revert "x86/lapic: Set EXTINT on BSP only"
This reverts commit aac79e0b8f4777f8a912ccdfc483755b7a4da52c.
Reason for revert: This massively slows down the boot process because
the LAPIC delivery mode for the APs is not set anymore. Plus, not all
review comments were fully addressed, yet this got merged in anyway.
Change-Id: If9bae6aae0d4d1f21b067a7d970975193c2b16d5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42166
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Diffstat (limited to 'src/cpu/x86/lapic/lapic.c')
| -rw-r--r-- | src/cpu/x86/lapic/lapic.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/src/cpu/x86/lapic/lapic.c b/src/cpu/x86/lapic/lapic.c index 653c3b2e40..f0a6cd7f46 100644 --- a/src/cpu/x86/lapic/lapic.c +++ b/src/cpu/x86/lapic/lapic.c @@ -2,11 +2,16 @@ #include <cpu/x86/lapic.h> #include <console/console.h> -#include <smp/node.h> void do_lapic_init(void) { - uint32_t lvt0_val; + /* this is so interrupts work. This is very limited scope -- + * linux will do better later, we hope ... + */ + /* this is the first way we learned to do it. It fails on real SMP + * stuff. So we have to do things differently ... + * see the Intel mp1.4 spec, page A-3 + */ printk(BIOS_INFO, "Setting up local APIC...\n"); @@ -23,16 +28,15 @@ void do_lapic_init(void) lapic_write_around(LAPIC_SPIV, (lapic_read_around(LAPIC_SPIV) & ~(LAPIC_VECTOR_MASK)) | LAPIC_SPIV_ENABLE); - - lvt0_val = (lapic_read_around(LAPIC_LVT0) & - ~(LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER | + lapic_write_around(LAPIC_LVT0, + (lapic_read_around(LAPIC_LVT0) & + ~(LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER | LAPIC_LVT_REMOTE_IRR | LAPIC_INPUT_POLARITY | - LAPIC_SEND_PENDING | LAPIC_LVT_RESERVED_1)) | - (LAPIC_LVT_REMOTE_IRR | LAPIC_SEND_PENDING); - if (boot_cpu()) - lvt0_val = SET_LAPIC_DELIVERY_MODE(lvt0_val, LAPIC_MODE_EXINT); - lapic_write_around(LAPIC_LVT0, lvt0_val); - + LAPIC_SEND_PENDING | LAPIC_LVT_RESERVED_1 | + LAPIC_DELIVERY_MODE_MASK)) + | (LAPIC_LVT_REMOTE_IRR | LAPIC_SEND_PENDING | + LAPIC_DELIVERY_MODE_EXTINT) + ); lapic_write_around(LAPIC_LVT1, (lapic_read_around(LAPIC_LVT1) & ~(LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER | |