vinzenz/redox
0
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

Remove debugging times, set PIT to slower frequency

Browse source
This commit is contained in:
Jeremy Soller 2016-09-01 16:46:34 -06:00
parent 817638b7aa
commit 7ae58a11d7
3 changed files with 2 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/x86_64/src/device/display.rs
View file

@ -102,7 +102,7 @@ pub unsafe fn init(active_table: &mut ActivePageTable) {
let start_frame = Frame::containing_address(PhysicalAddress::new(onscreen));
let end_frame = Frame::containing_address(PhysicalAddress::new(onscreen + size * 4 - 1));
for frame in Frame::range_inclusive(start_frame, end_frame) {
active_table.identity_map(frame, entry::HUGE_PAGE /*actually sets PAT for write combining*/ | entry::PRESENT | entry::WRITABLE | entry::NO_EXECUTE);
active_table.identity_map(frame, /*actually sets PAT for write combining*/ entry::HUGE_PAGE | entry::PRESENT | entry::WRITABLE | entry::NO_EXECUTE);
}
}

5
arch/x86_64/src/interrupt/irq.rs
View file

@ -15,11 +15,6 @@ unsafe fn slave_ack() {
}
interrupt!(pit, {
io::outb(0x43, 0);
let low = io::inb(0x40);
let high = io::inb(0x40);
let count = (high as u16) << 8 | (low as u16);
let _missed = 5370 - count;
master_ack();
});

2
bootloader/x86_64/initialize.asm
View file

@ -38,7 +38,7 @@ initialize:
.pit:
;initialize the PIT
mov ax, 5370 ;this is the divider for the PIT
mov ax, 65535 ;5370 ;this is the divider for the PIT
out 0x40, al
rol ax, 8
out 0x40, al