Module Name:    src
Committed By:   jmcneill
Date:           Thu Aug 23 22:34:03 UTC 2018

Modified Files:
        src/sys/arch/evbarm/fdt: fdt_machdep.c

Log Message:
Deal with reserved memory ranges that start before mem start


To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.33 src/sys/arch/evbarm/fdt/fdt_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/arch/evbarm/fdt/fdt_machdep.c
diff -u src/sys/arch/evbarm/fdt/fdt_machdep.c:1.32 src/sys/arch/evbarm/fdt/fdt_machdep.c:1.33
--- src/sys/arch/evbarm/fdt/fdt_machdep.c:1.32	Sun Aug  5 14:02:36 2018
+++ src/sys/arch/evbarm/fdt/fdt_machdep.c	Thu Aug 23 22:34:03 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: fdt_machdep.c,v 1.32 2018/08/05 14:02:36 skrll Exp $ */
+/* $NetBSD: fdt_machdep.c,v 1.33 2018/08/23 22:34:03 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015-2017 Jared McNeill <jmcne...@invisible.ca>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fdt_machdep.c,v 1.32 2018/08/05 14:02:36 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fdt_machdep.c,v 1.33 2018/08/23 22:34:03 jmcneill Exp $");
 
 #include "opt_machdep.h"
 #include "opt_bootconfig.h"
@@ -213,7 +213,7 @@ fdt_add_reserved_memory_range(uint64_t a
  * Exclude memory ranges from memory config from the device tree
  */
 static void
-fdt_add_reserved_memory(uint64_t max_addr)
+fdt_add_reserved_memory(uint64_t min_addr, uint64_t max_addr)
 {
 	uint64_t addr, size;
 	int index, error;
@@ -224,8 +224,14 @@ fdt_add_reserved_memory(uint64_t max_add
 		    &addr, &size);
 		if (error != 0 || size == 0)
 			continue;
+		if (addr + size <= min_addr)
+			continue;
 		if (addr >= max_addr)
 			continue;
+		if (addr < min_addr) {
+			size -= (min_addr - addr);
+			addr = min_addr;
+		}
 		if (addr + size > max_addr)
 			size = max_addr - addr;
 		fdt_add_reserved_memory_range(addr, size);
@@ -263,7 +269,7 @@ fdt_build_bootconfig(uint64_t mem_start,
 		VPRINTF("MEM: add %" PRIx64 "-%" PRIx64 "\n", addr, addr + size);
 	}
 
-	fdt_add_reserved_memory(mem_end);
+	fdt_add_reserved_memory(mem_start, mem_end);
 
 	const uint64_t initrd_size = initrd_end - initrd_start;
 	if (initrd_size > 0)

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