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authorDave Gerlach <d-gerlach@ti.com>2018-02-19 04:34:58 +0100
committerTony Lindgren <tony@atomide.com>2018-02-27 18:43:25 +0100
commit590e1d5ec6da4c493d1bde71894109cbee29dfcc (patch)
tree08bc7712999de3e963ea3c56291aa8abd2ad1704 /arch/arm/boot
parentARM: dts: am33xx: Reserve pm code and data regions in ocmcram sram node (diff)
downloadlinux-590e1d5ec6da4c493d1bde71894109cbee29dfcc.tar.xz
linux-590e1d5ec6da4c493d1bde71894109cbee29dfcc.zip
ARM: dts: am4372: Reserve pm code and data regions in ocmcram sram node
Add a 'pm_sram_code' reserved region to the ocmcram node to be exposed by the mmio-sram driver as a pool but also mark it protect-exec so that it can run code copied to it using sram_exec_copy. Add another 'pm_sram_data' reserved region to the ocmcram node to act as the data space for any code running from the 'pm_sram_code' region that is exposed as a regular pool. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot')
-rw-r--r--arch/arm/boot/dts/am4372.dtsi15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 964f3ef79728..81a03c1ad770 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -1141,6 +1141,21 @@
ocmcram: ocmcram@40300000 {
compatible = "mmio-sram";
reg = <0x40300000 0x40000>; /* 256k */
+ ranges = <0x0 0x40300000 0x40000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ pm_sram_code: pm-sram-code@0 {
+ compatible = "ti,sram";
+ reg = <0x0 0x1000>;
+ protect-exec;
+ };
+
+ pm_sram_data: pm-sram-data@1000 {
+ compatible = "ti,sram";
+ reg = <0x1000 0x1000>;
+ pool;
+ };
};
dcan0: can@481cc000 {