pbl: provide externally visible fdt_find_mem

of_find_mem can be used for generic DT images for other architectures as
well. To support this, move the definition, so it can be used by others
in the future.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 67 deletions

diff --git a/arch/arm/cpu/board-dt-2nd.c b/arch/arm/cpu/board-dt-2nd.c
index 7a8155b7b0..bb13180785 100644
--- a/arch/arm/cpu/board-dt-2nd.c
+++ b/arch/arm/cpu/board-dt-2nd.c
@@ -8,73 +8,7 @@
 #include <debug_ll.h>
 #include <asm/cache.h>
 #include <asm/sections.h>
-#include <linux/libfdt.h>
-
-static void fdt_find_mem(const void *fdt, unsigned long *membase, unsigned long *memsize)
-{
-	const __be32 *nap, *nsp, *reg;
-	uint32_t na, ns;
-	uint64_t memsize64, membase64;
-	int node, size, i;
-
-	/* Make sure FDT blob is sane */
-	if (fdt_check_header(fdt) != 0) {
-		pr_err("Invalid device tree blob\n");
-		goto err;
-	}
-
-	/* Find the #address-cells and #size-cells properties */
-	node = fdt_path_offset(fdt, "/");
-	if (node < 0) {
-		pr_err("Cannot find root node\n");
-		goto err;
-	}
-
-	nap = fdt_getprop(fdt, node, "#address-cells", &size);
-	if (!nap || (size != 4)) {
-		pr_err("Cannot find #address-cells property");
-		goto err;
-	}
-	na = fdt32_to_cpu(*nap);
-
-	nsp = fdt_getprop(fdt, node, "#size-cells", &size);
-	if (!nsp || (size != 4)) {
-		pr_err("Cannot find #size-cells property");
-		goto err;
-	}
-	ns = fdt32_to_cpu(*nap);
-
-	/* Find the memory range */
-	node = fdt_node_offset_by_prop_value(fdt, -1, "device_type",
-					     "memory", sizeof("memory"));
-	if (node < 0) {
-		pr_err("Cannot find memory node\n");
-		goto err;
-	}
-
-	reg = fdt_getprop(fdt, node, "reg", &size);
-	if (size < (na + ns) * sizeof(u32)) {
-		pr_err("cannot get memory range\n");
-		goto err;
-	}
-
-	membase64 = 0;
-	for (i = 0; i < na; i++)
-		membase64 = (membase64 << 32) | fdt32_to_cpu(*reg++);
-
-	/* get the memsize and truncate it to under 4G on 32 bit machines */
-	memsize64 = 0;
-	for (i = 0; i < ns; i++)
-		memsize64 = (memsize64 << 32) | fdt32_to_cpu(*reg++);
-
-	*membase = membase64;
-	*memsize = memsize64;
-
-	return;
-err:
-	pr_err("No memory, cannot continue\n");
-	while (1);
-}
+#include <pbl.h>
 
 #ifdef CONFIG_CPU_V8