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Save ACPI table address from multiboot headers

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This commit is contained in:
Thomas Lovén 2022-01-16 21:19:49 +01:00
parent 766e445122
commit 6a033344b5
2 changed files with 7 additions and 0 deletions
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4
src/kernel/boot/multiboot.c
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@ -56,6 +56,10 @@ static int parse_multiboot2(struct taglist *tags)
case MBOOT2_TAG_FBINFO: case MBOOT2_TAG_FBINFO:
kernel_boot_data.fbinfo = (void *)tag->data; kernel_boot_data.fbinfo = (void *)tag->data;
break; break;
case MBOOT2_TAG_OLD_RSDP:
case MBOOT2_TAG_NEW_RSDP:
kernel_boot_data.rsdp = (void *)tag->data;
break;
} }
// Tags are 8 byte alligned, so make sure we look for the next one in the right place // Tags are 8 byte alligned, so make sure we look for the next one in the right place

3
src/kernel/include/multiboot.h
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@ -10,6 +10,8 @@
#define MBOOT2_TAG_BOOTLOADER 2 #define MBOOT2_TAG_BOOTLOADER 2
#define MBOOT2_TAG_MMAP 6 #define MBOOT2_TAG_MMAP 6
#define MBOOT2_TAG_FBINFO 8 #define MBOOT2_TAG_FBINFO 8
#define MBOOT2_TAG_OLD_RSDP 14
#define MBOOT2_TAG_NEW_RSDP 15
#ifndef __ASSEMBLER__ #ifndef __ASSEMBLER__
#include <stddef.h> #include <stddef.h>
@ -36,6 +38,7 @@ struct kernel_boot_data_st{
unsigned int mmap_len; unsigned int mmap_len;
void *mmap; void *mmap;
struct fbinfo *fbinfo; struct fbinfo *fbinfo;
void *rsdp;
}; };
#define MMAP_FREE 1 #define MMAP_FREE 1