1 files changed, 91 insertions, 0 deletions
diff --git a/sys/arm/include/physmem.h b/sys/arm/include/physmem.h
new file mode 100644
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+++ b/sys/arm/include/physmem.h
@@ -0,0 +1,91 @@
+/*-
+ * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_MACHINE_PHYSMEM_H_
+#define	_MACHINE_PHYSMEM_H_
+
+/*
+ * The physical address at which the kernel was loaded.
+ */
+extern vm_paddr_t arm_physmem_kernaddr;
+
+/*
+ * Routines to help configure physical ram.
+ *
+ * Multiple regions of contiguous physical ram can be added (in any order).
+ *
+ * Multiple regions of physical ram that should be excluded from crash dumps, or
+ * memory allocation, or both, can be added (in any order).
+ *
+ * After all early kernel init is done and it's time to configure all
+ * remainining non-excluded physical ram for use by other parts of the kernel,
+ * arm_physmem_init_kernel_globals() processes the hardware regions and
+ * exclusion regions to generate the global dump_avail and phys_avail arrays
+ * that communicate physical ram configuration to other parts of the kernel.
+ */
+
+#define	EXFLAG_NODUMP	0x01
+#define	EXFLAG_NOALLOC	0x02
+
+void arm_physmem_hardware_region(vm_paddr_t pa, vm_size_t sz);
+void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t flags);
+void arm_physmem_init_kernel_globals(void);
+void arm_physmem_print_tables(void);
+
+/*
+ * Convenience routines for FDT.
+ */
+
+#ifdef FDT
+
+#include <machine/ofw_machdep.h>
+
+inline void 
+arm_physmem_hardware_regions(struct mem_region * mrptr, int mrcount)
+{
+	while (mrcount--) {
+		arm_physmem_hardware_region(mrptr->mr_start, mrptr->mr_size);
+		++mrptr;
+	}
+}
+
+inline void
+arm_physmem_exclude_regions(struct mem_region * mrptr, int mrcount, 
+    uint32_t exflags)
+{
+	while (mrcount--) {
+		arm_physmem_exclude_region(mrptr->mr_start, mrptr->mr_size, 
+		    exflags);
+		++mrptr;
+	}
+}
+
+#endif /* FDT */
+
+#endif
+