[Minios-devel] [UNIKRAFT early RFC PATCH 07/11] plat/kvm: arm64: Add entry point for APs (secondary cpus)

[Jia He <justin.he@xxxxxxx>]

Signed-off-by: Jia He <justin.he@xxxxxxx>
---
 plat/kvm/arm/entry64.S | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/plat/kvm/arm/entry64.S b/plat/kvm/arm/entry64.S
index df59ef6..9c98102 100644
--- a/plat/kvm/arm/entry64.S
+++ b/plat/kvm/arm/entry64.S
@@ -143,3 +143,33 @@ ENTRY(_libkvmplat_newstack)
        /* Branch to _libkvmplat_entry2 */
        br x1
 END(_libkvmplat_newstack)
+
+/*
+ * mpentry(unsigned long)
+ *
+ * Called by a core when it is being brought online.
+ * The data in x0 is passed straight to init_secondary.
+ */
+ENTRY(mpentry)
+       /* Disable interrupts */
+       msr     daifset, #2
+
+       /* Set the context id */
+       msr     contextidr_el1, xzr
+
+       /* Enable the mmu */
+       mov x7, #1
+       bl      start_mmu
+
+       /* Jump to the virtual address space */
+       ldr     x15, =mp_virtdone
+       br      x15
+
+mp_virtdone:
+       ldr     x4, =secondary_stacks
+       mov     x5, #(4096 * 4)//TODO
+       mul     x5, x0, x5
+       add     sp, x4, x5
+
+       b       init_secondary
+END(mpentry)
-- 
2.17.1


_______________________________________________
Minios-devel mailing list
Minios-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/minios-devel