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limine: Add SMP request

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This commit is contained in:
mintsuki 2022-03-18 01:17:56 +01:00
parent fb54571b34
commit 3f5b29c3c9
3 changed files with 87 additions and 0 deletions
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29
common/limine.h
View File

@ -96,6 +96,35 @@ struct limine_5_level_paging_request {
LIMINE_PTR(struct limine_5_level_paging_response *) response;
};
// SMP
#define LIMINE_SMP_REQUEST { LIMINE_COMMON_MAGIC, 0x95a67b819a1b857e, 0xa0b61b723b6a73e0 }
#define LIMINE_SMP_X2APIC (1 << 0)
struct limine_smp_info {
uint32_t processor_id;
uint32_t lapic_id;
uint64_t reserved;
LIMINE_PTR(void *) goto_address;
uint64_t extra_argument;
};
struct limine_smp_response {
uint64_t flags;
uint32_t bsp_lapic_id;
uint32_t unused;
uint64_t cpus_count;
LIMINE_PTR(struct limine_smp_info *) cpus;
};
struct limine_smp_request {
uint64_t id[4];
uint64_t flags;
LIMINE_PTR(struct limine_smp_response *) response;
};
// Memory map
#define LIMINE_MEMMAP_REQUEST { LIMINE_COMMON_MAGIC, 0x67cf3d9d378a806f, 0xe304acdfc50c3c62 }

36
common/protos/limine.c
View File

@ -427,6 +427,42 @@ FEAT_END
efi_exit_boot_services();
#endif
// SMP
FEAT_START
struct limine_smp_request *smp_request = get_request(LIMINE_SMP_REQUEST);
if (smp_request == NULL) {
break; // next feature
}
struct limine_smp_info *smp_array;
struct smp_information *smp_info;
size_t cpu_count;
uint32_t bsp_lapic_id;
smp_info = init_smp(0, (void **)&smp_array,
&cpu_count, &bsp_lapic_id,
true, want_5lv,
pagemap, smp_request->flags & LIMINE_SMP_X2APIC, true);
if (smp_info == NULL) {
break;
}
for (size_t i = 0; i < cpu_count; i++) {
void *cpu_stack = ext_mem_alloc(8192) + 8192;
smp_info[i].stack_addr = reported_addr(cpu_stack + 8192);
}
struct limine_smp_response *smp_response =
ext_mem_alloc(sizeof(struct limine_smp_response));
smp_response->flags |= (smp_request->flags & LIMINE_SMP_X2APIC) && x2apic_check();
smp_response->bsp_lapic_id = bsp_lapic_id;
smp_response->cpus_count = cpu_count;
smp_response->cpus = reported_addr(smp_array);
smp_request->response = reported_addr(smp_response);
FEAT_END
// Memmap
FEAT_START
struct limine_memmap_request *memmap_request = get_request(LIMINE_MEMMAP_REQUEST);

22
test/limine.c
View File

@ -42,6 +42,11 @@ struct limine_smbios_request smbios_request = {
.flags = 0, .response = NULL
};
struct limine_smp_request _smp_request = {
.id = LIMINE_SMP_REQUEST,
.flags = 0, .response = NULL
};
static char *get_memmap_type(uint64_t type) {
switch (type) {
case LIMINE_MEMMAP_USABLE:
@ -189,5 +194,22 @@ FEAT_START
e9_printf("SMBIOS 64-bit entry at: %x", smbios_response->entry_64);
FEAT_END
FEAT_START
if (_smp_request.response == NULL) {
e9_printf("SMP info not passed");
break;
}
struct limine_smp_response *smp_response = _smp_request.response;
e9_printf("");
e9_printf("Flags: %x", smp_response->flags);
e9_printf("BSP LAPIC ID: %x", smp_response->bsp_lapic_id);
e9_printf("CPUs count: %d", smp_response->cpus_count);
for (size_t i = 0; i < smp_response->cpus_count; i++) {
struct limine_smp_info *cpu = &smp_response->cpus[i];
e9_printf("Processor ID: %x", cpu->processor_id);
e9_printf("LAPIC ID: %x", cpu->lapic_id);
}
FEAT_END
for (;;);
}