[Pdbg] [PATCH] main: Add P8 kernel devicetree

[Amitay Isaacs]

From: Benjamin Herrenschmidt <benh at kernel.crashing.org>

This makes palmettos use kernel backend on bmc using coldfire driver.

Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Signed-off-by: Amitay Isaacs <amitay at ozlabs.org>
---
 Makefile.am      |  3 ++-
 p8-kernel.dts.m4 | 45 +++++++++++++++++++++++++++++++++++++++++++++
 src/main.c       | 10 +++++++++-
 3 files changed, 56 insertions(+), 2 deletions(-)
 create mode 100644 p8-kernel.dts.m4

diff --git a/Makefile.am b/Makefile.am
index e2783f1..2e3d67e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -14,6 +14,7 @@ EXTRA_DIST = \
 	p8-fsi.dts.m4 \
 	p8-host.dts.m4 \
 	p8-i2c.dts.m4 \
+	p8-kernel.dts.m4 \
 	p8-pib.dts.m4 \
 	p9-fsi.dtsi.m4 \
 	p9-host.dts.m4 \
@@ -26,7 +27,7 @@ EXTRA_DIST = \
 	generate_dt_header.sh
 
 if TARGET_ARM
-DT_ARM = p8-fsi.dts p8-i2c.dts \
+DT_ARM = p8-fsi.dts p8-i2c.dts p8-kernel.dts \
 	 p9w-fsi.dts p9r-fsi.dts p9z-fsi.dts p9-kernel.dts
 ARCH_FLAGS="-DTARGET_ARM=1"
 endif
diff --git a/p8-kernel.dts.m4 b/p8-kernel.dts.m4
new file mode 100644
index 0000000..4a59b78
--- /dev/null
+++ b/p8-kernel.dts.m4
@@ -0,0 +1,45 @@
+/dts-v1/;
+
+/ {
+       #address-cells = <0x1>;
+       #size-cells = <0x0>;
+
+       fsi0: kernelfsi at 0 {
+	       #address-cells = <0x2>;
+	       #size-cells = <0x1>;
+	       compatible = "ibm,kernel-fsi";
+	       reg = <0x0 0x0 0x0>;
+
+	       index = <0x0>;
+	       status = "mustexist";
+
+	       pib at 1000 {
+			#address-cells = <0x2>;
+			#size-cells = <0x1>;
+			reg = <0x0 0x1000 0x7>;
+			index = <0x0>;
+			compatible = "ibm,fsi-pib", "ibm,power8-fsi-pib";
+			include(p8-pib.dts.m4)dnl
+	       };
+
+	       hmfsi at 100000 {
+		       #address-cells = <0x2>;
+		       #size-cells = <0x1>;
+		       compatible = "ibm,fsi-hmfsi";
+		       reg = <0x0 0x100000 0x8000>;
+		       port = <0x1>;
+		       index = <0x1>;
+
+		       pib at 1000 {
+				#address-cells = <0x2>;
+				#size-cells = <0x1>;
+				reg = <0x0 0x1000 0x7>;
+				compatible = "ibm,fsi-pib", "ibm,power8-fsi-pib";
+				index = <0x1>;
+				include(p8-pib.dts.m4)dnl
+		       };
+
+	       };
+       };
+};
+
diff --git a/src/main.c b/src/main.c
index fcdab67..2330007 100644
--- a/src/main.c
+++ b/src/main.c
@@ -46,6 +46,7 @@
 #ifdef TARGET_ARM
 #include "p8-i2c.dt.h"
 #include "p8-fsi.dt.h"
+#include "p8-kernel.dt.h"
 #include "p9w-fsi.dt.h"
 #include "p9r-fsi.dt.h"
 #include "p9z-fsi.dt.h"
@@ -619,7 +620,14 @@ static int target_selection(void)
 		break;
 
 	case KERNEL:
-		pdbg_targets_init(&_binary_p9_kernel_dtb_o_start);
+		if (device_node == NULL) {
+			PR_ERROR("kernel backend requires a device type\n");
+			return -1;
+		}
+		if (!strcmp(device_node, "p8"))
+			pdbg_targets_init(&_binary_p8_kernel_dtb_o_start);
+		else
+			pdbg_targets_init(&_binary_p9_kernel_dtb_o_start);
 		break;
 
 #endif
-- 
2.17.1