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tsc: Use alternative delay sources whenever appropriate.

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PIT isn't available on some of new hardware including Hyper-V. So
use pmtimer for calibration. Moreover pmtimer calibration is faster, so
use it on coreboor where booting time is important.

Based on patch by Michael Chang.
This commit is contained in:
Vladimir Serbinenko 2015-11-13 16:14:53 +01:00
parent 3d2c8048da
commit d43a5ee651
13 changed files with 451 additions and 121 deletions
Download patch file Download diff file Expand all files Collapse all files

19
grub-core/Makefile.core.def
View file

@ -171,8 +171,20 @@ kernel = {
efi = kern/efi/init.c;
efi = kern/efi/mm.c;
efi = term/efi/console.c;
efi = kern/acpi.c;
efi = kern/efi/acpi.c;
i386_coreboot = kern/i386/pc/acpi.c;
i386_multiboot = kern/i386/pc/acpi.c;
i386_coreboot = kern/acpi.c;
i386_multiboot = kern/acpi.c;
x86 = kern/i386/tsc.c;
x86 = kern/i386/tsc_pit.c;
i386_efi = kern/i386/efi/tsc.c;
x86_64_efi = kern/i386/efi/tsc.c;
i386_efi = kern/i386/tsc_pmtimer.c;
i386_coreboot = kern/i386/tsc_pmtimer.c;
x86_64_efi = kern/i386/tsc_pmtimer.c;
i386_efi = kern/i386/efi/init.c;
i386_efi = bus/pci.c;
@ -184,6 +196,7 @@ kernel = {
x86_64_efi = bus/pci.c;
xen = kern/i386/tsc.c;
xen = kern/i386/xen/tsc.c;
x86_64_xen = kern/x86_64/xen/hypercall.S;
i386_xen = kern/i386/xen/hypercall.S;
xen = kern/xen/init.c;
@ -665,10 +678,8 @@ module = {
name = acpi;
common = commands/acpi.c;
efi = commands/efi/acpi.c;
i386_pc = commands/i386/pc/acpi.c;
i386_coreboot = commands/i386/pc/acpi.c;
i386_multiboot = commands/i386/pc/acpi.c;
i386_pc = kern/acpi.c;
i386_pc = kern/i386/pc/acpi.c;
enable = efi;
enable = i386_pc;