1 files changed, 85 insertions, 0 deletions
diff --git a/arch/i386/machine/boot.h b/arch/i386/machine/boot.h
new file mode 100644
index 00000000..11255509
--- /dev/null
+++ b/arch/i386/machine/boot.h
@@ -0,0 +1,85 @@
+/*
+ * 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 _I386_BOOT_H
+#define _I386_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
+#define KERNEL_OFFSET   0xc0000000
+
+/*
+ * 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>
+
+/*
+ * Access a variable during bootstrap, while still running at physical
+ * addresses.
+ */
+#define BOOT_VTOP(var) \
+    (*((typeof(var) *)((unsigned long)(&var) - KERNEL_OFFSET)))
+
+/*
+ * Address translation macros.
+ */
+#define BOOT_ADDR_VTOP(addr)    ((unsigned long)(addr) - KERNEL_OFFSET)
+#define BOOT_ADDR_PTOV(addr)    ((unsigned long)(addr) + KERNEL_OFFSET)
+
+/*
+ * Functions used before paging is enabled must be part of the .boot section
+ * so that they run at physical addresses. There is no .bootdata section; the
+ * BOOT_VTOP() macro should be used instead.
+ */
+#define __boot __section(".boot")
+
+/*
+ * 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 /* _I386_BOOT_H */