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#include "hal/obj.h"
#include "jove.h"
#include "limine.h"
#include "hal/memory.h"
#include "hal/obj.h"
#include "panic/panic.h"
#include "proc/init.h"
#include "lib/printf.h"
extern struct limine_memmap_response *_limine_memmap_resp;
PAGEALIGN
static jove_objdir_t s_region_objdir;
static jove_objdir_t s_hwmemory_objdir;
#define MEMMAP_MAX_ENTRIES 255
static const char *limine_mmap_entry_type_str[9] = {
"USABLE",
"RESERVED",
"ACPI RECLAIMABLE",
"ACPI NVS",
"BAD",
"LIMINE RECLAIMABLE",
"KERNEL",
"FRAMEBUFFER",
"ACPI TABLES"
};
void
mem_setup_regions(void)
{
{
jove_owned_obj_t *region_objdir_obj = objdir_getlocal(_rootdir_obj, INIT_ROOTDIR_FREEMEMORY_I);
obj_settype(region_objdir_obj, JOVE_OBJ_OBJDIR);
obj_setvalue(region_objdir_obj, (uintptr_t)&s_region_objdir);
obj_release(region_objdir_obj);
}
if(_limine_memmap_resp == NULL) {
kpanic("Limine failed to provide memory map.\n");
}
kprintf("Memory map provided by Limine:\n");
size_t region_i = 0;
size_t hwmem_i = 0;
for(size_t i = 0; i < _limine_memmap_resp->entry_count; i++) {
struct limine_memmap_entry *entry = _limine_memmap_resp->entries[i];
if(entry->type == LIMINE_MEMMAP_USABLE ||
entry->type == LIMINE_MEMMAP_ACPI_RECLAIMABLE ||
entry->type == LIMINE_MEMMAP_BOOTLOADER_RECLAIMABLE)
{
if(region_i > JOVE_OBJDIR_ENTRIES){
kprintf("%s: Provided memory map exceeds kernel limits. Some memory may not be accessable.", __func__);
break;
}
klogf("%p : %p %s\n", entry->base, entry->length, limine_mmap_entry_type_str[entry->type]);
if(entry->base == 0) continue;
{
jove_owned_obj_t *region_obj = obj_take(&s_region_objdir.entries[region_i++]);
region_new(region_obj, entry->base, entry->length / 0x1000);
obj_release(region_obj);
}
}
if(entry->type == LIMINE_MEMMAP_RESERVED |
entry->type == LIMINE_MEMMAP_ACPI_NVS |
entry->type == LIMINE_MEMMAP_ACPI_TABLES)
{
intmax_t hw_pages = entry->length >> 12;
uintptr_t base = entry->base;
while(hw_pages > 0) {
if(hwmem_i >= JOVE_OBJDIR_ENTRIES) {
kprintf("%s: Reserved memory region exceeds indexing limits!\n", __func__);
break;
}
size_t pages = hw_pages > 4095 ? 4095 : hw_pages;
//klogf("%p : %p RESERVED\n", base, ((pages + 1) << 12));
jove_owned_obj_t *hwmem_obj = obj_take(&s_hwmemory_objdir.entries[hwmem_i++]);
obj_settype(hwmem_obj, JOVE_OBJ_SHMEMORY);
obj_setvalue(hwmem_obj, entry->base | (entry->length >> 12));
obj_release(hwmem_obj);
hw_pages -= 4096;
base += (4096ULL << 12);
}
}
}
}
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