| 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 submited to upstream) |
| Signed-off-by: Adam Johnston <adam.johnston@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@0x08000000 { |
| + compatible = "removed-dma-pool"; |
| + reg = <0x0 0x08000000 0x0 0x02000000>; |
| + no-map; |
| + }; |
| + }; |
| }; |
| \ No newline at end of file |