arm64: dts: hikey: Add pstore support for HiKey

This patch reserves some memory in the DTS and sets up a
pstore device tree node to enable pstore support on HiKey.

Cc: Kees Cook <keescook@chromium.org>
Cc: Guodong Xu <guodong.xu@linaro.org>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index 49d53ff0314bb7ecdeeab07e108ae1343d22815b..9e4e06acce8b7b682aa80908ce1b889b1298ceaa 100644 (file)
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -32,6 +32,7 @@
         *  0x05f0,1000 - 0x05f0,1fff: Reboot reason
         *  0x06df,f000 - 0x06df,ffff: Mailbox message data
         *  0x0740,f000 - 0x0740,ffff: MCU firmware section
+        *  0x21f0,0000 - 0x21ff,ffff: pstore/ramoops buffer
         *  0x3e00,0000 - 0x3fff,ffff: OP-TEE
         */
        memory@0 {
@@ -40,9 +41,25 @@
                      <0x00000000 0x05f00000 0x00000000 0x00001000>,
                      <0x00000000 0x05f02000 0x00000000 0x00efd000>,
                      <0x00000000 0x06e00000 0x00000000 0x0060f000>,
-                     <0x00000000 0x07410000 0x00000000 0x36bf0000>;
+                     <0x00000000 0x07410000 0x00000000 0x1aaf0000>,
+                     <0x00000000 0x22000000 0x00000000 0x1c000000>;
        };
 
+       reserved-memory {
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               ramoops@0x21f00000 {
+                       compatible = "ramoops";
+                       reg = <0x0 0x21f00000 0x0 0x00100000>;
+                       record-size     = <0x00020000>;
+                       console-size    = <0x00020000>;
+                       ftrace-size     = <0x00020000>;
+               };
+       };
+
+
        reboot-mode-syscon@5f01000 {
                compatible = "syscon", "simple-mfd";
                reg = <0x0 0x05f01000 0x0 0x00001000>;