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#include <comus/memory.h>
#include <comus/asm.h>
#include <comus/mboot.h>
#include <comus/efi.h>
#include <lib.h>
#include "memory.h"
#include "paging.h"
#include "virtalloc.h"
#include "physalloc.h"
mem_ctx_t kernel_mem_ctx;
struct mem_ctx_s _kernel_mem_ctx;
extern volatile char kernel_pml4[];
extern struct virt_ctx kernel_virt_ctx;
void *kmapaddr(void *phys, void *virt, size_t len, unsigned int flags)
{
return mem_mapaddr(kernel_mem_ctx, phys, virt, len, flags);
}
void kunmapaddr(void *virt)
{
mem_unmapaddr(kernel_mem_ctx, virt);
}
void *kalloc_page(void)
{
return mem_alloc_page(kernel_mem_ctx);
}
void *kalloc_pages(size_t count)
{
return mem_alloc_pages(kernel_mem_ctx, count);
}
void kfree_pages(void *ptr)
{
mem_free_pages(kernel_mem_ctx, ptr);
}
int kload_page(void *virt)
{
return mem_load_page(kernel_mem_ctx, virt);
}
mem_ctx_t mem_ctx_alloc(void)
{
panic("not yet implemented");
}
mem_ctx_t mem_ctx_clone(mem_ctx_t ctx, bool cow)
{
(void)ctx;
(void)cow;
panic("not yet implemented");
}
void mem_ctx_free(mem_ctx_t ctx)
{
(void)ctx;
panic("not yet implemented");
}
void memory_init(void)
{
struct memory_map mmap;
if (mboot_get_mmap(&mmap))
if (efi_get_mmap(&mmap))
panic("failed to load memory map");
kernel_mem_ctx = &_kernel_mem_ctx;
kernel_mem_ctx->pml4 = kernel_pml4;
kernel_mem_ctx->virtctx = &kernel_virt_ctx;
cli();
paging_init();
virtaddr_init(kernel_mem_ctx->virtctx);
physalloc_init(&mmap);
sti();
// identiy map EFI functions
for (size_t i = 0; i < mmap.entry_count; i++) {
struct memory_segment *seg = &mmap.entries[i];
if (seg->type != SEG_TYPE_EFI)
continue;
kmapaddr((void *)seg->addr, (void *)seg->addr, seg->len, F_WRITEABLE);
}
}
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