Got memory map almost working

This commit is contained in:
2025-03-19 11:25:45 +01:00
parent 883cd5c1d4
commit 05561cd857
6 changed files with 99 additions and 44 deletions
+27 -11
View File
@@ -9,25 +9,41 @@
#define BOOT_MB2 2 // MultiBoot 2
#define BOOT_LIMINE 3 // Limine
struct boot_memmapEntry {
uint64_t base;
uint64_t size;
uint32_t type;
uint32_t attr;
};
// Memmap region types
#define BOOT_MMAP_AVAILABLE 1
#define BOOT_MMAP_RESERVED 2
#define BOOT_MMAP_ACPI_RECLAIM 3
#define BOOT_MMAP_NVS 4
#define BOOT_MMAP_BADRAM 5
// A memory map entry
struct boot_memmap {
uint32_t skip; // Used for skipping (may be padded for alignment)
uint64_t base; // Memory region address
uint64_t size; // Memory region length
uint32_t type; // Memory region type
} __packed;
/*
* Some values may not be provided by the bootloader, in this case
* pointers will be NULL and integer values will be 0 if applicable.
* Some unprovided values may also be implied. Eg.:
* If 'memmap = NULL' then 'memmapLen' doesn't matter.
*/
struct boot_info {
uint32_t memLower;
uint32_t memUpper;
struct boot_memmapEntry* memmap;
uint8_t bootDrive;
uint8_t bootPart1;
uint8_t bootPart2;
uint8_t bootPart3;
char* cmdline;
uint32_t memmap;
size_t memmapLen;
};
char* bootname;
} __packed;
extern struct boot_info bootloader;
/*
* This functions arguments depend on the boot protocol provided.
@@ -36,9 +52,9 @@ struct boot_info {
*/
int boot_init(int type, ...);
int boot_init_mb1(void* ptr, uint32_t magic);
int boot_initMB1(void* ptr, uint32_t magic);
// TODO:
// int boot_init_mb2(...);
// int boot_init_limine(...);
// int boot_initMB2(...);
// int boot_initLimine(...);
#endif