hace: Use shared context in .ram_nc for ctx_mut

stevenlee7189 · stevenlee7189 · commit 8e084a4486ba · 2025-06-30T18:02:38.000+08:00
Switch HaceController::ctx_mut to return a mutable reference to the shared
static context located in non-cacheable RAM (.ram_nc).

Replaces local instance field `aspeed_hash_ctx` with access to `SHARED_HASH_CTX`.

Signed-off-by: Steven Lee &lt;steven_lee@aspeedtech.com&gt;
diff --git a/memory.x b/memory.x
@@ -32,9 +32,10 @@ _stext = ORIGIN(RAM) + 0x420;
 */
 SECTIONS
 {
-  .ram_nc (NOLOAD) : ALIGN(4)
+  .ram_nc (NOLOAD) : ALIGN(16)
   {
-    *(.ram_nc);
-    . = ALIGN(4);
-  } >RAM_NC
+    __ram_nc_start = .;
+    KEEP(*(.ram_nc));
+    __ram_nc_end = .;
+  } > RAM_NC
 }
diff --git a/src/hace_controller.rs b/src/hace_controller.rs
@@ -337,7 +337,7 @@ impl MacErrorType for HaceController<'_> {
 
 impl HaceController<'_> {
     pub fn ctx_mut(&mut self) -> &mut AspeedHashContext {
-        &mut self.aspeed_hash_ctx // Direct reference to owned context
+        unsafe { &mut *Self::shared_ctx() }
     }
 
     pub fn start_hash_operation(&mut self, len: u32) {

Original file line number	Diff line number	Diff line change
`@@ -32,9 +32,10 @@ _stext = ORIGIN(RAM) + 0x420;`
`32`	`32`	`*/`
`33`	`33`	`SECTIONS`
`34`	`34`	`{`
`35`		`- .ram_nc (NOLOAD) : ALIGN(4)`
	`35`	`+ .ram_nc (NOLOAD) : ALIGN(16)`
`36`	`36`	`{`
`37`		`- *(.ram_nc);`
`38`		`- . = ALIGN(4);`
`39`		`- } >RAM_NC`
	`37`	`+ __ram_nc_start = .;`
	`38`	`+ KEEP(*(.ram_nc));`
	`39`	`+ __ram_nc_end = .;`
	`40`	`+ } > RAM_NC`
`40`	`41`	`}`
Original file line number	Diff line number	Diff line change
`@@ -337,7 +337,7 @@ impl MacErrorType for HaceController<'_> {`
`337`	`337`
`338`	`338`	`impl HaceController<'_> {`
`339`	`339`	`pub fn ctx_mut(&mut self) -> &mut AspeedHashContext {`
`340`		`- &mut self.aspeed_hash_ctx // Direct reference to owned context`
	`340`	`+ unsafe { &mut *Self::shared_ctx() }`
`341`	`341`	`}`
`342`	`342`
`343`	`343`	`pub fn start_hash_operation(&mut self, len: u32) {`