1 files changed, 90 insertions, 0 deletions
diff --git a/arch/x86/machine/multiboot.h b/arch/x86/machine/multiboot.h
new file mode 100644
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+++ b/arch/x86/machine/multiboot.h
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+/*
+ * Copyright (c) 2010, 2012 Richard Braun.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _X86_MULTIBOOT_H
+#define _X86_MULTIBOOT_H
+
+/*
+ * Magic number provided by the OS to the boot loader.
+ */
+#define MULTIBOOT_OS_MAGIC 0x1badb002
+
+/*
+ * Multiboot flags requesting services from the boot loader.
+ */
+#define MULTIBOOT_OS_MEMORY_INFO    0x2
+
+#define MULTIBOOT_OS_FLAGS MULTIBOOT_OS_MEMORY_INFO
+
+/*
+ * Magic number to identify a multiboot compliant boot loader.
+ */
+#define MULTIBOOT_LOADER_MAGIC 0x2badb002
+
+/*
+ * Multiboot flags set by the boot loader.
+ */
+#define MULTIBOOT_LOADER_MEMORY     0x01
+#define MULTIBOOT_LOADER_CMDLINE    0x04
+#define MULTIBOOT_LOADER_MODULES    0x08
+#define MULTIBOOT_LOADER_MMAP       0x40
+
+#ifndef __ASSEMBLY__
+
+#include <lib/macros.h>
+#include <lib/stdint.h>
+
+/*
+ * A multiboot module.
+ */
+struct multiboot_module {
+    void *mod_start;
+    void *mod_end;
+    char *string;
+    uint32_t reserved;
+} __packed;
+
+/*
+ * Memory map entry.
+ */
+struct multiboot_mmap_entry {
+    uint32_t size;
+    uint64_t base_addr;
+    uint64_t length;
+    uint32_t type;
+} __packed;
+
+/*
+ * Multiboot information structure to get data passed by the boot loader.
+ */
+struct multiboot_info {
+    uint32_t flags;
+    uint32_t mem_lower;
+    uint32_t mem_upper;
+    uint32_t unused0;
+    char *cmdline;
+    uint32_t mods_count;
+    struct multiboot_module *mods_addr;
+    uint32_t unused1[4];
+    uint32_t mmap_length;
+    void *mmap_addr;
+    uint32_t unused2[9];
+} __packed;
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _X86_MULTIBOOT_H */