1 files changed, 82 insertions, 0 deletions
diff --git a/arch/i386/machine/init.h b/arch/i386/machine/init.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 _I386_INIT_H
+#define _I386_INIT_H
+
+#include <lib/macros.h>
+#include <lib/stdint.h>
+#include <machine/boot.h>
+#include <machine/multiboot.h>
+#include <machine/pmap.h>
+
+/*
+ * Stack used to bootstrap the kernel.
+ */
+extern char init_stack[BOOT_STACK_SIZE];
+
+/*
+ * Common stack used by APs to bootstrap.
+ */
+extern char init_ap_stack[BOOT_STACK_SIZE];
+
+/*
+ * This variable contains the CPU ID of an AP during its early boot.
+ */
+extern unsigned long init_ap_id;
+
+/*
+ * After its early boot, an AP enables paging and jumps to virtual
+ * addresses. At this point, it switches to a per-AP preallocated
+ * stack. This variable contains the (virtual) address of that stack.
+ */
+extern unsigned long init_ap_boot_stack;
+
+/*
+ * Print the given message and halt the system immediately.
+ *
+ * This function allows early initialization code to print something helpful
+ * before printk is available.
+ */
+void __noreturn init_panic(const char *s);
+
+/*
+ * This function is called by the bootstrap code before paging is enabled.
+ * It establishes a direct mapping of the kernel at virtual addresses and
+ * returns the physical address of the page directory. It is up to the
+ * caller to actually enable paging.
+ */
+pmap_pte_t * init_paging(uint32_t eax, const struct multiboot_info *mbi);
+
+/*
+ * This function is called by the AP bootstrap code before paging is enabled.
+ * It merely returns the physical address of the already existing kernel page
+ * directory.
+ */
+pmap_pte_t * init_ap_paging(void);
+
+/*
+ * Main entry point, called directly after basic paging is initialized.
+ */
+void init(void);
+
+/*
+ * Entry point for APs.
+ */
+void init_ap(void);
+
+#endif /* _I386_INIT_H */