diff mbox series

[5/5] xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm (arm32)

Message ID 20250204192357.1862264-6-ayan.kumar.halder@amd.com (mailing list archive)
State New
Headers show
Series Enable early bootup of AArch32 MPU systems | expand

Commit Message

Ayan Kumar Halder Feb. 4, 2025, 7:23 p.m. UTC 
Secondary cpus initialization is not yet supported. Thus, we print an
appropriate message and put the secondary cpus in WFE state.

Signed-off-by: Ayan Kumar Halder <ayan.kumar.halder@amd.com>
---
 xen/arch/arm/arm32/mpu/head.S | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/xen/arch/arm/arm32/mpu/head.S b/xen/arch/arm/arm32/mpu/head.S
index 4aad3c6b5d..49ab5fc9c0 100644
--- a/xen/arch/arm/arm32/mpu/head.S
+++ b/xen/arch/arm/arm32/mpu/head.S
@@ -156,6 +156,16 @@  FUNC(enable_boot_cpu_mm)
     ret
 END(enable_boot_cpu_mm)
 
+/*
+ * We don't yet support secondary CPUs bring-up. Implement a dummy helper to
+ * please the common code.
+ */
+ENTRY(enable_secondary_cpu_mm)
+    PRINT("- SMP not enabled yet -\r\n")
+1:  wfe
+    b 1b
+ENDPROC(enable_secondary_cpu_mm)
+
 /*
  * Local variables:
  * mode: ASM