diff options
Diffstat (limited to 'arm64-dts-marvell-a3700-reserve-ATF-memory.patch')
| -rw-r--r-- | arm64-dts-marvell-a3700-reserve-ATF-memory.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arm64-dts-marvell-a3700-reserve-ATF-memory.patch b/arm64-dts-marvell-a3700-reserve-ATF-memory.patch new file mode 100644 index 000000000..c10e7256d --- /dev/null +++ b/arm64-dts-marvell-a3700-reserve-ATF-memory.patch @@ -0,0 +1,45 @@ +From e1912a821a992f04c258e844d717733de03daeb7 Mon Sep 17 00:00:00 2001 +From: Peter Robinson <pbrobinson@gmail.com> +Date: Wed, 15 Aug 2018 14:06:45 +0100 +Subject: [PATCH] arm64: dts: marvell: a3700: reserve ATF memory + +On Marvell Armada 3700, the ARM Trusted Firmware is loaded in RAM at address +0x04000000, and can use up to 16MiB (0x01000000). + +As the ATF is responsible for handling PSCI calls (including, but not limited +to, system reset management), its memory area should never be overwritten +during runtime. + +Declaring a range of reserved memory solves this problem. + +Signed-off-by: Arnaud Ferraris <arnaud.ferraris.external@xxxxxxxxxx> +Signed-off-by: Peter Robinson <pbrobinson@gmail.com> +--- + arch/arm64/boot/dts/marvell/armada-37xx.dtsi | 11 +++++++++++ + 1 file changed, 11 insertions(+) + +diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi +index 3353252d78a0a..2110e7dbc9818 100644 +--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi ++++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi +@@ -34,6 +34,17 @@ + }; + }; + ++ reserved-memory { ++ #address-cells = <2>; ++ #size-cells = <2>; ++ ranges; ++ ++ arm-trusted-firmware@4000000 { ++ no-map; ++ reg = <0x0 0x04000000 0x0 0x01000000>; ++ }; ++ }; ++ + psci { + compatible = "arm,psci-0.2"; + method = "smc"; +-- +2.17.1 + |