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#include "cpu.h"
#include "serial.h"
#include "kprint.h"
#include "memory.h"
#include "panic.h"
#include <loader/data_efi.h>
#include <kernel/entry.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdnoreturn.h>
static void efi_memory_init(struct efi_memory_map_data *map)
{
// FIXME: bad girl shit: overwriting on aliased pointers.
// this is a temporary solution to shortcomings with
// loader boot data. it's sort-of OK because the memory_range struct
// is smaller than EFI_MEMORY_DESCRIPTOR. it's still not good.
struct memory_range *ranges = (struct memory_range *)map->data;
int entries = map->size / map->descsize;
for (int i = 0; i < entries; i++)
{
EFI_MEMORY_DESCRIPTOR *desc;
desc = (EFI_MEMORY_DESCRIPTOR *)((char *)map->data + i * map->descsize);
enum memory_range_type type;
phys_addr_t base;
size_t size;
base = desc->PhysicalStart;
size = desc->NumberOfPages * EFI_PAGE_SIZE;
switch (desc->Type)
{
case EfiConventionalMemory:
case EfiBootServicesData:
case EfiBootServicesCode:
case EfiLoaderData:
case EfiLoaderCode:
type = AVAILABLE_MEMORY;
break;
case SystemMemoryType:
type = SYSTEM_MEMORY;
break;
default:
type = RESERVED_MEMORY;
}
ranges[i].type = type;
ranges[i].base = base;
ranges[i].size = size;
}
memory_init(ranges, entries);
}
noreturn void kernel_entry(struct efi_boot_data *data)
{
(void)data;
cpu_init();
serial_init();
kputs("<hacker voice> i'm in\r\n");
efi_memory_init(data->memory_map);
halt();
}
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