From a0bb2191d900631acd33276a028397b0a9b3fb5d Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 23 May 2024 19:36:54 -0400
Subject: kernel/amd64: pmap: Add pmap_init()

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/arch/amd64/amd64/pmap.c | 6 ++++++
 sys/include/vm/pmap.h       | 5 +++++
 sys/vm/vm_init.c            | 4 ++++
 3 files changed, 15 insertions(+)

diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c
index 54d4ca3..8af6d39 100644
--- a/sys/arch/amd64/amd64/pmap.c
+++ b/sys/arch/amd64/amd64/pmap.c
@@ -257,3 +257,9 @@ pmap_read_vas(void)
     vas.lock.lock = 0;
     return vas;
 }
+
+int
+pmap_init(struct vm_ctx *ctx)
+{
+    return 0;
+}
diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h
index 3380199..faad0fb 100644
--- a/sys/include/vm/pmap.h
+++ b/sys/include/vm/pmap.h
@@ -99,4 +99,9 @@ int pmap_free_vas(struct vm_ctx *, struct vas);
  * Unmap a page.
  */
 int pmap_unmap(struct vm_ctx *, struct vas, vaddr_t);
+
+/*
+ * Architecture specific init code for pmap
+ */
+int pmap_init(struct vm_ctx *);
 #endif  /* _VM_PMAP_H_ */
diff --git a/sys/vm/vm_init.c b/sys/vm/vm_init.c
index 6096059..3087e6e 100644
--- a/sys/vm/vm_init.c
+++ b/sys/vm/vm_init.c
@@ -29,6 +29,7 @@
 
 #include <vm/vm.h>
 #include <vm/physseg.h>
+#include <vm/pmap.h>
 #include <sys/panic.h>
 #include <assert.h>
 
@@ -74,6 +75,9 @@ vm_init(void)
     void *pool_va;
 
     kernel_vas = pmap_read_vas();
+    if (pmap_init(vm_get_ctx()) != 0) {
+        panic("Failed to init pmap layer\n");
+    }
 
     /* Setup virtual memory context */
     bsp_vm_ctx.dynalloc_pool_sz = DYNALLOC_POOL_SZ;
-- 
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