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limine: Add EFI memory map feature

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This commit is contained in:
mintsuki 2023-12-07 00:08:34 +01:00
parent 40313b25ec
commit 302d57e47d
4 changed files with 90 additions and 0 deletions
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35
PROTOCOL.md
View File

@ -1347,6 +1347,41 @@ struct limine_efi_system_table_response {
* `address` - Address of EFI system table.
### EFI Memory Map Feature
ID:
```c
#define LIMINE_EFI_MEMMAP_REQUEST { LIMINE_COMMON_MAGIC, 0x7df62a431d6872d5, 0xa4fcdfb3e57306c8 }
```
Request:
```c
struct limine_efi_memmap_request {
uint64_t id[4];
uint64_t revision;
struct limine_efi_memmap_response *response;
};
```
Response:
```c
struct limine_efi_memmap_response {
uint64_t revision;
void *memmap;
uint64_t memmap_size;
uint64_t desc_size;
uint64_t desc_version;
};
```
* `memmap` - Address (HHDM) of the EFI memory map.
* `memmap_size` - Size in bytes of the EFI memory map.
* `desc_size` - EFI memory map descriptor size in bytes.
* `desc_version` - Version of EFI memory map descriptors.
Note: This feature provides data suitable for use with RT->SetVirtualAddressMap(), provided
HHDM offset is subtracted from `memmap`.
### Boot Time Feature
ID:

18
common/protos/limine.c
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@ -973,6 +973,24 @@ FEAT_END
efi_exit_boot_services();
#endif
// EFI memory map
FEAT_START
struct limine_efi_memmap_request *efi_memmap_request = get_request(LIMINE_EFI_MEMMAP_REQUEST);
if (efi_memmap_request == NULL) {
break; // next feature
}
struct limine_efi_memmap_response *efi_memmap_response =
ext_mem_alloc(sizeof(struct limine_efi_memmap_response));
efi_memmap_response->memmap = reported_addr(efi_mmap);
efi_memmap_response->memmap_size = efi_mmap_size;
efi_memmap_response->desc_size = efi_desc_size;
efi_memmap_response->desc_version = efi_desc_ver;
efi_memmap_request->response = reported_addr(efi_memmap_response);
FEAT_END
// SMP
FEAT_START
struct limine_smp_request *smp_request = get_request(LIMINE_SMP_REQUEST);

18
limine.h
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@ -507,6 +507,24 @@ struct limine_efi_system_table_request {
LIMINE_PTR(struct limine_efi_system_table_response *) response;
};
/* EFI memory map */
#define LIMINE_EFI_MEMMAP_REQUEST { LIMINE_COMMON_MAGIC, 0x7df62a431d6872d5, 0xa4fcdfb3e57306c8 }
struct limine_efi_memmap_response {
uint64_t revision;
LIMINE_PTR(void *) memmap;
uint64_t memmap_size;
uint64_t desc_size;
uint64_t desc_version;
};
struct limine_efi_memmap_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_efi_memmap_response *) response;
};
/* Boot time */
#define LIMINE_BOOT_TIME_REQUEST { LIMINE_COMMON_MAGIC, 0x502746e184c088aa, 0xfbc5ec83e6327893 }

19
test/limine.c
View File

@ -86,6 +86,11 @@ struct limine_efi_system_table_request est_request = {
.revision = 0, .response = NULL
};
struct limine_efi_memmap_request efi_memmap_request = {
.id = LIMINE_EFI_MEMMAP_REQUEST,
.revision = 0, .response = NULL
};
struct limine_boot_time_request boot_time_request = {
.id = LIMINE_BOOT_TIME_REQUEST,
.revision = 0, .response = NULL
@ -364,6 +369,20 @@ FEAT_START
e9_printf("EFI system table at: %x", est_response->address);
FEAT_END
FEAT_START
e9_printf("");
if (efi_memmap_request.response == NULL) {
e9_printf("EFI memory map not passed");
break;
}
struct limine_efi_memmap_response *efi_memmap_response = efi_memmap_request.response;
e9_printf("EFI memory map feature, revision %d", efi_memmap_response->revision);
e9_printf("EFI memory map at: %x", efi_memmap_response->memmap);
e9_printf("EFI memory map size: %x", efi_memmap_response->memmap_size);
e9_printf("EFI memory descriptor size: %x", efi_memmap_response->desc_size);
e9_printf("EFI memory descriptor version: %d", efi_memmap_response->desc_version);
FEAT_END
FEAT_START
e9_printf("");
if (boot_time_request.response == NULL) {