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// MIT License, Copyright (c) 2021 Marvin Borner
#include <assert.h>
#include <def.h>
#include <mm.h>
#include <multiboot.h>
PROTECTED static struct multiboot_info *info = NULL;
CLEAR void multiboot_init(u32 magic, u32 addr)
{
assert(magic == MULTIBOOT_MAGIC);
info = (void *)addr;
if (info->flags & MULTIBOOT_INFO_CMDLINE) {
// TODO: Do something useful with grub cmdline?
/* printf("CMDLINE: '%s'\n", info->cmdline); */
}
}
CLEAR void multiboot_mmap(void)
{
assert(info->flags & MULTIBOOT_INFO_MEMORY);
struct multiboot_mmap_entry *mmap = (void *)info->mmap_addr;
u32 length = info->mmap_length;
u32 count = length / sizeof(*mmap);
u32 total = 0;
for (u32 i = 0; i < count; i++) {
/* printf("Memory region 0x%x-0x%x\n", mmap->addr, mmap->addr + mmap->len); */
if (mmap->type == MULTIBOOT_MEMORY_AVAILABLE) {
total += mmap->len;
physical_set_free(memory_range_around(mmap->addr, mmap->len));
} else if (mmap->type == MULTIBOOT_MEMORY_BADRAM) {
printf("Defect memory at 0x%x-0x%x\n", mmap->addr, mmap->addr + mmap->len);
physical_set_used(memory_range_around(mmap->addr, mmap->len));
} else {
physical_set_used(memory_range_around(mmap->addr, mmap->len));
}
mmap++;
}
physical_set_total(total);
}
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