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kernel: move irq setup later; put level control behind arg

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This commit is contained in:
K. Lange 2018-12-06 17:19:09 +09:00
parent 90aa039ef8
commit 3d34370c80
2 changed files with 9 additions and 4 deletions
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8
kernel/cpu/irq.c
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@ -11,6 +11,7 @@
#include <kernel/logging.h>
#include <kernel/module.h>
#include <kernel/printf.h>
#include <kernel/args.h>
/* Programmable interrupt controller */
#define PIC1 0x20
@ -153,10 +154,13 @@ void irq_install(void) {
* they were set to level triggered in expectation
* of an IO APIC taking over...
*/
if (!args_present("noelcr")) {
#if 0
outportb(0x4D0, 0x00);
outportb(0x4D0, 0x00);
#endif
outportb(0x4D1, (1 << (10-8)) | (1 << (11-8)));
uint8_t val = inportb(0x4D1);
outportb(0x4D1, val | (1 << (10-8)) | (1 << (11-8)));
}
}
void irq_ack(size_t irq_no) {

5
kernel/main.c
View File

@ -94,8 +94,6 @@ int kmain(struct multiboot *mboot, uint32_t mboot_mag, uintptr_t esp) {
/* Initialize core modules */
gdt_install(); /* Global descriptor table */
idt_install(); /* IDT */
isrs_install(); /* Interrupt service requests */
irq_install(); /* Hardware interrupt requests */
uintptr_t last_mod = (uintptr_t)&end;
if (mboot_ptr->flags & MULTIBOOT_FLAG_MODS) {
@ -168,6 +166,9 @@ int kmain(struct multiboot *mboot, uint32_t mboot_mag, uintptr_t esp) {
args_parse(cmdline);
}
isrs_install(); /* Interrupt service requests */
irq_install(); /* Hardware interrupt requests */
vfs_install();
tasking_install(); /* Multi-tasking */
timer_install(); /* PIC driver */