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- From 2d305094f8f500362079e9e7637d46129bf980e4 Mon Sep 17 00:00:00 2001
- From: Adam Johnston <adam.johnston@arm.com>
- Date: Tue, 25 Jul 2023 16:05:51 +0000
- Subject: [PATCH] n1sdp: Reserve OP-TEE memory from NWd
- The physical memory which is used to run OP-TEE on the N1SDP is known
- to the secure world via TOS_FW_CONFIG, but it may not be known to the
- normal world.
- As a precaution, explicitly reserve this memory via NT_FW_CONFIG to
- prevent the normal world from using it. This is not required on most
- platforms as the Trusted OS is run from secure RAM.
- Upstream-Status: Pending (not yet submitted to upstream)
- Signed-off-by: Adam Johnston <adam.johnston@arm.com>
- Signed-off-by: Mariam Elshakfy <mariam.elshakfy@arm.com>
- ---
- plat/arm/board/n1sdp/fdts/n1sdp_nt_fw_config.dts | 12 ++++++++++++
- 1 file changed, 12 insertions(+)
- diff --git a/plat/arm/board/n1sdp/fdts/n1sdp_nt_fw_config.dts b/plat/arm/board/n1sdp/fdts/n1sdp_nt_fw_config.dts
- index da5e04ddb6..b7e2d4e86f 100644
- --- a/plat/arm/board/n1sdp/fdts/n1sdp_nt_fw_config.dts
- +++ b/plat/arm/board/n1sdp/fdts/n1sdp_nt_fw_config.dts
- @@ -20,4 +20,16 @@
- local-ddr-size = <0x0>;
- remote-ddr-size = <0x0>;
- };
- +
- + reserved-memory {
- + #address-cells = <2>;
- + #size-cells = <2>;
- + ranges;
- +
- + optee@0xDE000000 {
- + compatible = "removed-dma-pool";
- + reg = <0x0 0xDE000000 0x0 0x02000000>;
- + no-map;
- + };
- + };
- };
- \ No newline at end of file
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