1 files changed, 83 insertions, 0 deletions
diff --git a/arch/x86/machine/boot.h b/arch/x86/machine/boot.h
new file mode 100644
index 00000000..03e934ce
--- /dev/null
+++ b/arch/x86/machine/boot.h
@@ -0,0 +1,83 @@
+/*
+ * 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_BOOT_H
+#define _X86_BOOT_H
+
+/*
+ * The kernel is physically loaded at BOOT_OFFSET by the boot loader. It
+ * will quickly establish the necessary mappings to run at KERNEL_OFFSET.
+ *
+ * See the linker script for more information.
+ */
+#define BOOT_OFFSET     0x00100000
+
+#ifdef __LP64__
+#define KERNEL_OFFSET   0xffffffff80000000
+#else /* __LP64__ */
+#define KERNEL_OFFSET   0xc0000000
+#endif /* __LP64__ */
+
+/*
+ * Size of the stack used to bootstrap the kernel.
+ */
+#define BOOT_STACK_SIZE 4096
+
+/*
+ * Address where the MP trampoline code is copied and run at.
+ *
+ * It must reside at a free location in the first segment and be page
+ * aligned.
+ */
+#define BOOT_MP_TRAMPOLINE_ADDR 0x7000
+
+#ifndef __ASSEMBLY__
+
+#include <lib/macros.h>
+
+/*
+ * Virtual to physical address translation macro.
+ */
+#define BOOT_VTOP(addr) ((unsigned long)(addr) - KERNEL_OFFSET)
+
+/*
+ * Functions and data used before paging is enabled must be part of the .boot
+ * and .bootdata sections respectively, so that they use physical addresses.
+ * Once paging is enabled, their access relies on the kernel identity mapping.
+ */
+#define __boot __section(".boot")
+#define __bootdata __section(".bootdata")
+
+/*
+ * Boundaries of the .boot section.
+ */
+extern char _boot;
+extern char _eboot;
+
+/*
+ * Size of the trampoline code used for APs.
+ */
+extern unsigned long boot_ap_size;
+
+/*
+ * Address of the MP trampoline code.
+ */
+void boot_ap_start(void);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _X86_BOOT_H */