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matthewguimatthewgui
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optee: update README file.
Signed-off-by: guibing <guibing@nucleisys.com>
1 parent f3905ee commit 3d7654d

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Lines changed: 46 additions & 42 deletions

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‎optee/README.md‎

Lines changed: 23 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -27,22 +27,22 @@ RISC-V OPTEE系统的运行架构如下图：
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```mermaid
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sequenceDiagram
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autonumber
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participant Ree
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participant REE
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participant Monitor
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participant Tee
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Ree ->> Ree: process
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Ree ->> Monitor: request tee service
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participant TEE
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REE ->> REE: process
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REE ->> Monitor: request tee service
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Monitor ->> Monitor: save REE CTX
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Monitor ->> Monitor: restore TEE CTX
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Monitor ->> Monitor: switch CTX
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Monitor -->> Tee: mret
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Tee ->> Tee: process request
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Tee -->> Monitor: ecall with result
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Monitor -->> TEE: mret
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TEE ->> TEE: process request
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TEE -->> Monitor: ecall with result
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Monitor ->> Monitor: save TEE CTX
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Monitor ->> Monitor: restore REE CTX
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Monitor ->> Monitor: switch CTX
44-
Monitor -->> Ree: mret
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Ree ->> Ree: continue to process
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Monitor -->> REE: mret
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REE ->> REE: continue to process
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```
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## 中断处理
@@ -53,27 +53,29 @@ REE对应Linux os，Monitor对应opensbi，TEE对应optee_os
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```mermaid
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sequenceDiagram
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autonumber
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participant Ree
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participant REE
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participant Monitor
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participant Tee
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note over Ree,Tee : running in NSecure World
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Ree ->> Ree: process
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note over Ree,Tee : M recv SIntr, masked. NSInt to S, unmasked.
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participant TEE
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note over REE,TEE : running in NSecure World
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REE ->> REE: process
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note over REE,TEE : M recv SIntr, masked. NSInt to S, unmasked.
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Monitor ->> Monitor: claim Plic intr num
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Monitor ->> Monitor: save REE CTX
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Monitor ->> Monitor: restore TEE CTX
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Monitor ->> Monitor: M disable Intr, SIntr to S
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Monitor ->> Monitor: set the intr source pending
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Monitor ->> Monitor: switch CTX
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Monitor -->> Tee: mret to fiq_entry
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note over Ree,Tee: M Intr masked, SInt to S, unmasked
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Tee ->> Tee: process received fiq interrupt
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Tee -->> Monitor: ecall with fiq_done
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Monitor -->> TEE: mret to fiq_entry
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note over REE,TEE: M Intr masked, SInt to S, unmasked
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TEE ->> TEE: process received fiq interrupt
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TEE -->> Monitor: ecall with fiq_done
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Monitor ->> Monitor: restore REE CTX
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Monitor ->> Monitor: SIntr to M, unmasked. NSIntr to S, unmasked.
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Monitor ->> Monitor: switch CTX
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Monitor -->> Ree: mret
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note over Ree,Tee: SIntr to M, unmasked. NSInt to S, unmasked.
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Ree ->> Ree: continue to process
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Monitor -->> REE: mret
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note over REE,TEE: SIntr to M, unmasked. NSInt to S, unmasked.
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REE ->> REE: continue to process
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```
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‎optee/README_en.md‎

Lines changed: 23 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -28,22 +28,22 @@ The following figure shows the general tee service request process. In the figur
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```mermaid
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sequenceDiagram
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autonumber
31-
participant Ree
31+
participant REE
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participant Monitor
33-
participant Tee
34-
Ree ->> Ree: process
35-
Ree ->> Monitor: request tee service
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participant TEE
34+
REE ->> REE: process
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REE ->> Monitor: request tee service
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Monitor ->> Monitor: save REE CTX
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Monitor ->> Monitor: restore TEE CTX
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Monitor ->> Monitor: switch CTX
39-
Monitor -->> Tee: mret
40-
Tee ->> Tee: process request
41-
Tee -->> Monitor: ecall with result
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Monitor -->> TEE: mret
40+
TEE ->> TEE: process request
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TEE -->> Monitor: ecall with result
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Monitor ->> Monitor: save TEE CTX
4343
Monitor ->> Monitor: restore REE CTX
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Monitor ->> Monitor: switch CTX
45-
Monitor -->> Ree: mret
46-
Ree ->> Ree: continue to process
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Monitor -->> REE: mret
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REE ->> REE: continue to process
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```
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## Interrupt Management
@@ -58,27 +58,29 @@ TEE is Secure software stack, like OPTEE;
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```mermaid
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sequenceDiagram
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autonumber
61-
participant Ree
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participant REE
6262
participant Monitor
63-
participant Tee
64-
note over Ree,Tee : running in NSecure World
65-
Ree ->> Ree: process
66-
note over Ree,Tee : M recv SIntr, masked. NSInt to S, unmasked.
63+
participant TEE
64+
note over REE,TEE : running in NSecure World
65+
REE ->> REE: process
66+
note over REE,TEE : M recv SIntr, masked. NSInt to S, unmasked.
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Monitor ->> Monitor: claim Plic intr num
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Monitor ->> Monitor: save REE CTX
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Monitor ->> Monitor: restore TEE CTX
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Monitor ->> Monitor: M disable Intr, SIntr to S
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Monitor ->> Monitor: set the intr source pending
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Monitor ->> Monitor: switch CTX
71-
Monitor -->> Tee: mret to fiq_entry
72-
note over Ree,Tee: M Intr masked, SInt to S, unmasked
73-
Tee ->> Tee: process received fiq interrupt
74-
Tee -->> Monitor: ecall with fiq_done
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Monitor -->> TEE: mret to fiq_entry
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note over REE,TEE: M Intr masked, SInt to S, unmasked
75+
TEE ->> TEE: process received fiq interrupt
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TEE -->> Monitor: ecall with fiq_done
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Monitor ->> Monitor: restore REE CTX
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Monitor ->> Monitor: SIntr to M, unmasked. NSIntr to S, unmasked.
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Monitor ->> Monitor: switch CTX
79-
Monitor -->> Ree: mret
80-
note over Ree,Tee: SIntr to M, unmasked. NSInt to S, unmasked.
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Ree ->> Ree: continue to process
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Monitor -->> REE: mret
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note over REE,TEE: SIntr to M, unmasked. NSInt to S, unmasked.
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REE ->> REE: continue to process
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```
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## Secure PLIC interrupt configuration

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