1 files changed, 108 insertions, 0 deletions
diff --git a/arch/i386/machine/param.h b/arch/i386/machine/param.h
new file mode 100644
index 00000000..caa16912
--- /dev/null
+++ b/arch/i386/machine/param.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2010, 2011, 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_PARAM_H
+#define _I386_PARAM_H
+
+#include <machine/boot.h>
+
+#define __LITTLE_ENDIAN__
+
+/*
+ * L1 cache line size.
+ *
+ * XXX Use this value until processor selection is available.
+ */
+#define CPU_L1_SIZE 64
+
+/*
+ * System timer frequency.
+ */
+#define HZ 100
+
+/*
+ * 4 KiB virtual pages.
+ */
+#define PAGE_SHIFT 12
+
+/*
+ * User space boundaries.
+ */
+#define VM_MIN_ADDRESS  0UL
+#define VM_MAX_ADDRESS  (unsigned long)KERNEL_OFFSET
+
+/*
+ * Kernel stack size for threads and interrupt handlers.
+ */
+#define STACK_SIZE 4096
+
+/*
+ * Size of a linear mapping of PTEs (see the pmap module).
+ */
+#ifdef PAE
+#define VM_PMAP_PTEMAP_SIZE 0x800000UL
+#else /* PAE */
+#define VM_PMAP_PTEMAP_SIZE 0x400000UL
+#endif /* PAE */
+
+/*
+ * Kernel space boundaries.
+ *
+ * Addresses beyond VM_MAX_KERNEL_ADDRESS are used for PTEs linear mappings.
+ * An area the size of such a mapping is reserved to avoid overflows.
+ *
+ * See the pmap module for more information.
+ */
+#define VM_MIN_KERNEL_ADDRESS   VM_MAX_ADDRESS
+#define VM_MAX_KERNEL_ADDRESS   (~(VM_PMAP_PTEMAP_SIZE * 2) + 1)
+
+/*
+ * Maximum number of physical segments.
+ */
+#ifdef PAE
+#define VM_MAX_PHYS_SEG 2
+#else /* PAE */
+#define VM_MAX_PHYS_SEG 1
+#endif /* PAE */
+
+/*
+ * Number of physical segment lists.
+ */
+#define VM_NR_PHYS_SEGLIST VM_MAX_PHYS_SEG
+
+/*
+ * Segment list priorities.
+ */
+#define VM_PHYS_SEGLIST_HIGHMEM 1
+#define VM_PHYS_SEGLIST_NORMAL  0
+
+/*
+ * Segment boundaries.
+ */
+#ifdef PAE
+#define VM_PHYS_NORMAL_LIMIT    0x100000000ULL
+#define VM_PHYS_HIGHMEM_LIMIT   0x1000000000ULL
+#else /* PAE */
+#define VM_PHYS_NORMAL_LIMIT    0xfffff000UL
+#endif /* PAE */
+
+/*
+ * Virtual space reserved for kernel map entries.
+ */
+#define VM_MAP_KENTRY_SIZE 0x800000UL
+
+#endif /* _I386_PARAM_H */