commit da0a5f0c65913e4ec0a70a5019ce0a7bcaab21c9
author Laurent Pinchart <laurentp@cse-semaphore.com> Thu Apr 10 17:03:04 2008 +0200
committer Kumar Gala <galak@kernel.crashing.org> Thu Apr 17 01:01:37 2008 -0500
tree 6aab633690a25acaf46d61416cff6a808deaad8d
parent d464df2667cf181419604e656773f80996cf0470

[POWERPC] Add bootwrapper function to get virtual reg from the device tree.

This patch adds a new generic device tree processing function that retrieves
virtual reg addresses from the device tree to the bootwrapper code. It also
updates the bootwrapper code to use the new function.

dt_get_virtual_reg() retrieves the virtual reg addresses from the
"virtual-reg" property. If the property can't be found, it uses the "reg"
property and walks the tree to translate it to absolute addresses.

Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/cpm-serial.c

diff --git a/arch/powerpc/boot/cpm-serial.c b/arch/powerpc/boot/cpm-serial.c
index 28296fa..1f6225a 100644
--- a/arch/powerpc/boot/cpm-serial.c
+++ b/arch/powerpc/boot/cpm-serial.c
@@ -177,7 +177,6 @@
 {
 	void *reg_virt[2];
 	int is_smc = 0, is_cpm2 = 0, n;
-	unsigned long reg_phys;
 	void *parent, *muram;
 
 	if (dt_is_compatible(devp, "fsl,cpm1-smc-uart")) {
@@ -206,15 +205,8 @@
 	if (n < 4)
 		return -1;
 
-	n = getprop(devp, "virtual-reg", reg_virt, sizeof(reg_virt));
-	if (n < (int)sizeof(reg_virt)) {
-		for (n = 0; n < 2; n++) {
-			if (!dt_xlate_reg(devp, n, &reg_phys, NULL))
-				return -1;
-
-			reg_virt[n] = (void *)reg_phys;
-		}
-	}
+	if (dt_get_virtual_reg(devp, reg_virt, 2) < 2)
+		return -1;
 
 	if (is_smc)
 		smc = reg_virt[0];
@@ -227,15 +219,8 @@
 	if (!parent)
 		return -1;
 
-	n = getprop(parent, "virtual-reg", reg_virt, sizeof(reg_virt));
-	if (n < (int)sizeof(reg_virt)) {
-		if (!dt_xlate_reg(parent, 0, &reg_phys, NULL))
-			return -1;
-
-		reg_virt[0] = (void *)reg_phys;
-	}
-
-	cpcr = reg_virt[0];
+	if (dt_get_virtual_reg(parent, &cpcr, 1) < 1)
+		return -1;
 
 	muram = finddevice("/soc/cpm/muram/data");
 	if (!muram)
@@ -246,15 +231,8 @@
 	 * is one for both parent and child.
 	 */
 
-	n = getprop(muram, "virtual-reg", reg_virt, sizeof(reg_virt));
-	if (n < (int)sizeof(reg_virt)) {
-		if (!dt_xlate_reg(muram, 0, &reg_phys, NULL))
-			return -1;
-
-		reg_virt[0] = (void *)reg_phys;
-	}
-
-	muram_start = reg_virt[0];
+	if (dt_get_virtual_reg(muram, (void **)&muram_start, 1) < 1)
+		return -1;
 
 	n = getprop(muram, "reg", &muram_offset, 4);
 	if (n < 4)