Initial commit

2026-02-04 01:58:49 +01:00
commit 0e01345abf
117 changed files with 5076 additions and 0 deletions
@@ -0,0 +1,49 @@
+#pragma once
+
+#define SMP_GDTR_OFFSET       80
+#define SMP_FARJMP_OFFSET     90
+#define SMP_TEMP_STACK_OFFSET 98
+#define SMP_TEMP_CR3_OFFSET   102
+#define SMP_ENTRY_OFFSET      106
+#define SMP_HHDM_OFFSET       114
+#define SMP_KERNEL32_DS       16
+#define SMP_KERNEL64_CS       24
+#define SMP_KERNEL64_DS       32
+#define SMP_INFO_SIZE         127
+
+#ifndef __ASSEMBLER__
+
+#include <gdt.h>
+#include <kernel/common.h>
+#include <kernel/compiler.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct [[__packed]] smp_info {
+    struct gdt gdt;
+    struct gdtr gdtr;
+    uint32_t farjmp_offset;
+    uint32_t farjmp_segment;
+    uint32_t temp_stack;
+    uint32_t temp_cr3;
+    uint64_t entry;
+    uint64_t hhdm_offset;
+    uint32_t lapic_id;
+    uint8_t booted;
+};
+
+static_assert(SMP_GDTR_OFFSET == offsetof(struct smp_info, gdtr));
+static_assert(SMP_FARJMP_OFFSET == offsetof(struct smp_info, farjmp_offset));
+static_assert(SMP_TEMP_STACK_OFFSET == offsetof(struct smp_info, temp_stack));
+static_assert(SMP_TEMP_CR3_OFFSET == offsetof(struct smp_info, temp_cr3));
+static_assert(SMP_ENTRY_OFFSET == offsetof(struct smp_info, entry));
+static_assert(SMP_HHDM_OFFSET == offsetof(struct smp_info, hhdm_offset));
+static_assert(SMP_KERNEL32_DS == offsetof(struct gdt, kernel_data32));
+static_assert(SMP_KERNEL64_CS == offsetof(struct gdt, kernel_code64));
+static_assert(SMP_KERNEL64_DS == offsetof(struct gdt, kernel_data64));
+static_assert(SMP_INFO_SIZE == sizeof(struct smp_info));
+
+// Initializes a LAPIC.
+void x86_64_smp_init(uint32_t id);
+
+#endif