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ARM: dts: am33xx: Reserve pm code and data regions in ocmcram sram node

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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>
This commit is contained in:
Dave Gerlach
2018-02-18 21:34:57 -06:00
committed by Tony Lindgren
parent ef1e7b45c9
commit 31ffe020af
1 changed files with 15 additions and 0 deletions
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15
arch/arm/boot/dts/am33xx.dtsi
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@@ -905,6 +905,21 @@ phy_sel: cpsw-phy-sel@44e10650 {
ocmcram: ocmcram@40300000 {
compatible = "mmio-sram";
reg = <0x40300000 0x10000>; /* 64k */
ranges = <0x0 0x40300000 0x10000>;
#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;
};
};
elm: elm@48080000 {