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#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <arch/x86_64/serial.h>
#include <limine.h>
#include <framebuffer.h>
#include <mm/pmm.h>
#include <arch/arch_init.h>
namespace {
__attribute__((used, section(".requests")))
volatile LIMINE_BASE_REVISION(2);
}
namespace {
__attribute__((used, section(".requests")))
volatile limine_framebuffer_request framebuffer_request = {
.id = LIMINE_FRAMEBUFFER_REQUEST,
.revision = 0,
.response = nullptr
};
}
namespace {
__attribute__((used, section(".requests")))
volatile limine_memmap_request memmap_request = {
.id = LIMINE_MEMMAP_REQUEST,
.revision = 0,
.response = nullptr
};
}
namespace {
__attribute__((used, section(".requests")))
volatile limine_hhdm_request hhdm_request = {
.id = LIMINE_HHDM_REQUEST,
.revision = 0,
.response = nullptr
};
}
namespace {
__attribute__((used, section(".requests_start_marker")))
volatile LIMINE_REQUESTS_START_MARKER;
__attribute__((used, section(".requests_end_marker")))
volatile LIMINE_REQUESTS_END_MARKER;
}
namespace {
[[noreturn]] void hcf() {
asm("cli");
for (;;) {
asm("hlt");
}
}
}
extern void (*__init_array[])();
extern void (*__init_array_end[])();
// linker symbols
uint64_t _kernel_begin;
uint64_t _kernel_end;
// this will cause problems later
uint64_t _hhdm_offset;
extern "C" void _start() {
asm("cli");
if (!LIMINE_BASE_REVISION_SUPPORTED) {
hcf();
}
_hhdm_offset = hhdm_request.response->offset;
arch_init();
// initialize global constructors
for (size_t i = 0; &__init_array[i] != __init_array_end; i++) {
__init_array[i]();
}
// Ensure we got a framebuffer.
if (framebuffer_request.response == nullptr
|| framebuffer_request.response->framebuffer_count < 1) {
hcf();
}
if (memmap_request.response == nullptr) {
hcf();
}
// Fetch the first framebuffer.
limine_framebuffer* framebuffer = framebuffer_request.response->framebuffers[0];
fb_init((uint32_t*)framebuffer->address, framebuffer->pitch, framebuffer->height);
draw_pixel(727, 727, 0x9528fd);
draw_pixel(0, 0, 0xff0000);
draw_pixel(framebuffer->width - 1, framebuffer->height - 1, 0x00ff00);
// for (size_t i = 0; i < framebuffer->mode_count; i++) {
// printf("Mode %d\n", i);
// printf("Pitch %d\nWidth %d\nHeight %d\nbpp %d\nmem_model %d\n",
// framebuffer->modes[i]->pitch, framebuffer->modes[i]->width, framebuffer->modes[i]->height,
// framebuffer->modes[i]->bpp, framebuffer->modes[i]->memory_model);
// }
printf("Actual framebuffer:\n");
printf("Pitch %d\nWidth %d\nHeight %d\nbpp %d\nmem_model %d\n",
framebuffer->pitch, framebuffer->width, framebuffer->height,
framebuffer->bpp, framebuffer->memory_model);
limine_memmap_response* memmap = memmap_request.response;
for (int i = 0; i < memmap->entry_count; i++) {
printf("base: %lx\nlength: %lx\ntype: %d\n\n",
memmap->entries[i]->base, memmap->entries[i]->length, memmap->entries[i]->type);
}
printf("hhdm offset: %lx\n", _hhdm_offset);
pmm_init(memmap_request.response);
// We're done, just hang...
hcf();
}
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