From: Duje Mihanović <duje.mihanovic@skole.hr>
Date: Mon, 22 Aug 2022 20:11:21 +0000 (+0200)
Subject: Merge branch 'ps2-driver' into mm
X-Git-Url: https://git.dujemihanovic.xyz/%7B%7B?a=commitdiff_plain;h=refs%2Fremotes%2Forigin%2Fmm;p=nameless-os.git

Merge branch 'ps2-driver' into mm
---

96b81920dce6c169f32fc4d5b724b4046ea9bfcd
diff --cc boot/x86/stage3/Makefile
index cfe2189,0000000..25b0265
mode 100644,000000..100644
--- a/boot/x86/stage3/Makefile
+++ b/boot/x86/stage3/Makefile
@@@ -1,26 -1,0 +1,26 @@@
 +STAGE3_OBJ = loader.o elf.o paging.o prekernel.o
 +
 +ASFLAGS_BASE = -f elf -g dwarf2 -DGIT_REVISION=\"$(GIT_REV)\"
 +CFLAGS_BASE = -ffreestanding -nostdlib -DGIT_REVISION=\"$(GIT_REV)\" -g \
 +	      -Og
- LDFLAGS_BASE = -ffreestanding -nostdlib -g -lgcc -T stage3.ld -flto
++LDFLAGS_BASE = -ffreestanding -nostdlib -g -lgcc -T stage3.ld
 +
 +default: LOADER.BIN loader.elf
 +
 +loader.elf: $(STAGE3_OBJ)
 +	$(REAL_CC) $(LDFLAGS_BASE) $(LDFLAGS) -Wl,--oformat=elf32-i386 $^ -o $@
 +
 +LOADER.BIN: $(STAGE3_OBJ)
 +	$(REAL_CC) $(LDFLAGS_BASE) $(LDFLAGS) $^ -o $@
 +
 +# Implicit rules
 +%.o: %.c
 +	$(REAL_CC) $(CFLAGS_BASE) $(CFLAGS) -c $< -o $@
 +
 +%.o: %.s
 +	$(AS) $(ASFLAGS_BASE) $(ASFLAGS) $< -o $@
 +
 +clean:
 +	-rm -f $(STAGE3_OBJ) LOADER.BIN loader.elf
 +
 +.PHONY: default clean
diff --cc kernel/Makefile
index b510e80,0000000..8bb12d8
mode 100644,000000..100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@@ -1,27 -1,0 +1,27 @@@
 +include arch/x86/Makefile
 +include drivers/Makefile
 +include kernel/Makefile
 +
 +ASFLAGS_BASE = -f elf -g dwarf2
 +CFLAGS_BASE = -fgnu89-inline -ffreestanding -nostdlib -Iinclude \
 +	      -Iinclude/arch/x86 -g -DGIT_COMMIT=\"$(GIT_REV)\" \
 +	      -Og
- LDFLAGS_BASE = -ffreestanding -nostdlib -lgcc -g -flto -T arch/x86/linker.ld
++LDFLAGS_BASE = -ffreestanding -nostdlib -lgcc -g -T arch/x86/linker.ld
 +
 +kernel.elf kernel.dbg: $(KERNEL_OBJ)
 +	$(REAL_CC) $(LDFLAGS_BASE) $(LDFLAGS) $^ -o $@
 +	$(CROSS_COMPILE)objcopy --only-keep-debug kernel.elf kernel.dbg
 +	$(CROSS_COMPILE)objcopy --add-gnu-debuglink=kernel.dbg kernel.elf
 +	$(CROSS_COMPILE)strip --strip-unneeded kernel.elf
 +
 +clean:
 +	-rm $(KERNEL_OBJ) kernel.elf kernel.dbg
 +
 +# Implicit rules
 +%.o: %.c
 +	$(REAL_CC) $(CFLAGS_BASE) $(CFLAGS) -c $< -o $@
 +
 +%.o: %.s
 +	$(AS) $(ASFLAGS_BASE) $(ASFLAGS) $< -o $@
 +
 +.PHONY: clean
diff --cc kernel/drivers/Makefile
index 76d86aa,0000000..c7a3619
mode 100644,000000..100644
--- a/kernel/drivers/Makefile
+++ b/kernel/drivers/Makefile
@@@ -1,1 -1,0 +1,2 @@@
++include drivers/input/Makefile
 +include drivers/irq/Makefile
diff --cc kernel/drivers/input/Makefile
index 0000000,0000000..7577b52
new file mode 100644
--- /dev/null
+++ b/kernel/drivers/input/Makefile
@@@ -1,0 -1,0 +1,1 @@@
++KERNEL_OBJ += drivers/input/ps2.o
diff --cc kernel/include/arch/x86/bitflags.h
index 0000000,377f730..377f730
mode 000000,100644..100644
--- a/kernel/include/arch/x86/bitflags.h
+++ b/kernel/include/arch/x86/bitflags.h
diff --cc kernel/include/arch/x86/input/ps2.h
index 0000000,55858bf..55858bf
mode 000000,100644..100644
--- a/kernel/include/arch/x86/input/ps2.h
+++ b/kernel/include/arch/x86/input/ps2.h
diff --cc kernel/kernel/kernel.c
index 64e64ae,0000000..b198fcf
mode 100644,000000..100644
--- a/kernel/kernel/kernel.c
+++ b/kernel/kernel/kernel.c
@@@ -1,97 -1,0 +1,110 @@@
 +#include <kprint.h>
 +#include <io.h>
 +#include <irq/idt.h>
 +#include <irq/interrupt.h>
 +#include <irq/i8259a.h>
++#include <input/ps2.h>
 +#include <stdint.h>
 +#include <mm/paging.h>
 +#include <panic.h>
 +
 +struct idt_descriptor idt[256] __attribute__((aligned(0x10)));
 +struct idtr idtr __attribute__((aligned(0x10)));
 +extern void (*_int_handler_table[48])(void);
 +
 +struct e820_map {
 +	uint64_t base;
 +	uint64_t length;
 +	uint32_t type;
 +	uint32_t attrib;
 +};
 +
 +void print_e820(struct e820_map *mmap, int mmap_size)
 +{
 +	kprint("       Base       |      Length      |   Type   |  Attrib  |\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("------------------------------------------------------------\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	for (int i=0; i<mmap_size; i++) {
 +		kprintq(mmap[i].base, 1);
 +		kprintc('|', VGA_LIGHT_GRAY, VGA_BLACK);
 +		kprintq(mmap[i].length, 1);
 +		kprintc('|', VGA_LIGHT_GRAY, VGA_BLACK);
 +		kprintd(mmap[i].type, 1);
 +		kprintc('|', VGA_LIGHT_GRAY, VGA_BLACK);
 +		kprintd(mmap[i].attrib, 1);
 +		kprintc('|', VGA_LIGHT_GRAY, VGA_BLACK);
 +		kprintc('\n', VGA_LIGHT_GRAY, VGA_BLACK);
 +	}
 +}
 +
 +/* Small handler for double faults. Will be put elsewhere eventually. */
 +int double_fault_handler(struct interrupt_frame *frame)
 +{
 +	kprint("Double fault occurred!\n", VGA_BRIGHT_RED, VGA_BLACK);
 +	kprint("EAX: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->eax, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EBX: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->ebx, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("ECX: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->ecx, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EDX: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->edx, 1);
 +	kprintc('\n', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EBP: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->ebp, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("ESP: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->esp, 1);
 +	kprintc('\n', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("ESI: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->esi, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EDI: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->edi, 1);
 +	kprintc('\n', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EIP: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->eip, 1);
 +	kprintc(' ', VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("EFLAGS: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprintd(frame->eflags, 1);
 +	kprintc('\n', VGA_LIGHT_GRAY, VGA_BLACK);
 +	PANIC("double fault");
 +}
 +
 +void kmain(struct e820_map *mmap, int mmap_size)
 +{
 +	vga_initialize();
 +	kprint("Welcome to Nameless OS!\nRunning revision: ", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint(GIT_COMMIT, VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	kprint("BIOS memory map:\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	print_e820(mmap, mmap_size);
 +	kprint("Preparing IDT...\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	for (int i=0; i<48; i++) {
 +		idt_set_descriptor(idt, i, 0x8, _int_handler_table[i], IDT_INTERRUPT_GATE, 0);
 +	}
 +	kprint("IDT prepared, loading...\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	populate_idtr(&idtr, idt);
 +	load_idt(idtr);
 +	kprint("Setting up interrupts...\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	register_interrupt(8, &double_fault_handler);
 +	pic_init(0x20, 0x28);
 +	pic_mask_all();
 +	asm volatile ("sti");
++	kprint("Initializing PS/2...\n", VGA_LIGHT_GRAY, VGA_BLACK);
++	int ret = ps2_initialize();
++	switch (ret) {
++	case -1:
++		kprint("No PS/2 devices found or something is faulty\n", VGA_LIGHT_GRAY, VGA_BLACK);
++		break;
++	case 0:
++		kprint("One PS/2 device found\n", VGA_LIGHT_GRAY, VGA_BLACK);
++		break;
++	case 1:
++		kprint("Two PS/2 devices found\n", VGA_LIGHT_GRAY, VGA_BLACK);
++	}
 +	kprint("All done\n", VGA_LIGHT_GRAY, VGA_BLACK);
 +	while(1);
 +}