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authorJérémy Fanguède <j.fanguede@virtualopensystems.com>2019-07-18 17:17:30 +0200
committerJan-Simon Moeller <jsmoeller@linuxfoundation.org>2020-03-12 18:01:05 +0000
commit51abffddc77897fc266682be16e7f468613c2216 (patch)
tree46b67418c611adda02b7d187f66ba306fef604b8 /meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files
parent9f4f5ba2cf02fd40764a299fbaa7089cece5774d (diff)
meta-rcar-gen3: Add Xen specific device tree for m3ulcb
Provide a specific version of the device tree (appended with -xen) to run with Xen. Only the R-Car m3ulcb board is supported and tested so far. Add also the Xen block device backend support in the kernel, to be able to run block device based DomU. From U-Boot, Xen and Linux Dom0 can be run as follows (assuming binaries are in sdcard first partition): > setenv bootargs > fatload mmc 0:1 0x48080000 xen-m3ulcb.uImage > fatload mmc 0:1 0x48000000 r8a7796-m3ulcb-xen.dtb > fatload mmc 0:1 0x7a000000 Image-m3ulcb.bin > bootm 0x48080000 - 0x48000000 The Linux Dom0 bootargs are hardcoded in the device tree, the rootfs is expected to be on /dev/mmcblk1p2 Bug-AGL: SPEC-2912 Change-Id: Ia86e0789650eaf79d13691cf4f53755c8cb8f06c Signed-off-by: Jérémy Fanguède <j.fanguede@virtualopensystems.com>
Diffstat (limited to 'meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files')
-rw-r--r--meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/r8a7796-m3ulcb-xen.dts91
-rw-r--r--meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/xen-be.cfg1
2 files changed, 92 insertions, 0 deletions
diff --git a/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/r8a7796-m3ulcb-xen.dts b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/r8a7796-m3ulcb-xen.dts
new file mode 100644
index 000000000..7940b1027
--- /dev/null
+++ b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/r8a7796-m3ulcb-xen.dts
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the M3ULCB (R-Car Starter Kit Pro) board
+ *
+ * Copyright (C) 2016-2018 Renesas Electronics Corp.
+ * Copyright (C) 2016 Cogent Embedded, Inc.
+ */
+
+/dts-v1/;
+#include "r8a7796.dtsi"
+#include "ulcb.dtsi"
+
+/ {
+ model = "Renesas M3ULCB board based on r8a7796";
+ compatible = "renesas,m3ulcb", "renesas,r8a7796";
+
+
+ chosen {
+ /delete-property/ bootargs;
+ xen,xen-bootargs = "dom0_mem=752M console=dtuart dtuart=serial0 dom0_max_vcpus=4";
+ xen,dom0-bootargs = "console=hvc0 clk_ignore_unused root=/dev/mmcblk1p2 rw rootwait ignore_loglevel cma=32M earlyprintk";
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+ modules {
+ module@0 {
+ compatible = "xen,linux-zimage",
+ "xen,multiboot-module";
+ reg = <0x0 0x7a000000 0x0 0x02000000>;
+ };
+ };
+ };
+
+ cpus {
+ idle-states {
+ /delete-node/ cpu-sleep-1;
+ };
+ };
+
+ memory@48000000 {
+ device_type = "memory";
+ /* first 128MB is reserved for secure area. */
+ reg = <0x0 0x48000000 0x0 0x38000000>, <0x6 0x00000000 0x0 0x40000000>;
+ };
+
+ vspm_if {
+ compatible = "renesas,vspm_if";
+ };
+
+ versaclock5_out3: versaclk-3 {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ /* Initial value of versaclock out3 */
+ clock-frequency = <33000000>;
+ };
+};
+
+&a53_0 {
+ /delete-property/ cpu-idle-states;
+};
+
+&a53_1 {
+ /delete-property/ cpu-idle-states;
+};
+
+&a53_2 {
+ /delete-property/ cpu-idle-states;
+};
+
+&a53_3 {
+ /delete-property/ cpu-idle-states;
+};
+
+&du {
+ clocks = <&cpg CPG_MOD 724>,
+ <&cpg CPG_MOD 723>,
+ <&cpg CPG_MOD 722>,
+ <&versaclock5 1>,
+ <&versaclock5_out3>,
+ <&versaclock5 2>;
+ clock-names = "du.0", "du.1", "du.2",
+ "dclkin.0", "dclkin.1", "dclkin.2";
+};
+
+&vspb {
+ status = "okay";
+};
+
+&vspi0 {
+ status = "okay";
+};
diff --git a/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/xen-be.cfg b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/xen-be.cfg
new file mode 100644
index 000000000..c9fc6d756
--- /dev/null
+++ b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/xen-be.cfg
@@ -0,0 +1 @@
+CONFIG_XEN_BLKDEV_BACKEND=y