[PATCH v3 16/52] xen/mmu: relocate copy_from_paddr into setup.c

[Penny Zheng <Penny.Zheng@xxxxxxx>]

Function copy_from_paddr() is defined in asm/setup.h, so it is better to
be implemented in setup.c.
Current copy_from_paddr() implementation is mmu-specific, so this commit moves
copy_from_paddr() into mmu/setup.c, and it is also benefical for us to
implement MPU version of copy_from_paddr() in later commit.

Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
---
v3:
- new commit
---
 xen/arch/arm/kernel.c    | 27 ---------------------------
 xen/arch/arm/mmu/setup.c | 27 +++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index ca5318515e..2e64612ab3 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -41,33 +41,6 @@ struct minimal_dtb_header {
 
 #define DTB_MAGIC 0xd00dfeed
 
-/**
- * copy_from_paddr - copy data from a physical address
- * @dst: destination virtual address
- * @paddr: source physical address
- * @len: length to copy
- */
-void __init copy_from_paddr(void *dst, paddr_t paddr, unsigned long len)
-{
-    void *src = (void *)FIXMAP_ADDR(FIXMAP_MISC);
-
-    while (len) {
-        unsigned long l, s;
-
-        s = paddr & (PAGE_SIZE-1);
-        l = min(PAGE_SIZE - s, len);
-
-        set_fixmap(FIXMAP_MISC, maddr_to_mfn(paddr), PAGE_HYPERVISOR_WC);
-        memcpy(dst, src + s, l);
-        clean_dcache_va_range(dst, l);
-        clear_fixmap(FIXMAP_MISC);
-
-        paddr += l;
-        dst += l;
-        len -= l;
-    }
-}
-
 static void __init place_modules(struct kernel_info *info,
                                  paddr_t kernbase, paddr_t kernend)
 {
diff --git a/xen/arch/arm/mmu/setup.c b/xen/arch/arm/mmu/setup.c
index f4de0cb29d..a7590a2443 100644
--- a/xen/arch/arm/mmu/setup.c
+++ b/xen/arch/arm/mmu/setup.c
@@ -342,6 +342,33 @@ void __init setup_mm(void)
 }
 #endif
 
+/*
+ * copy_from_paddr - copy data from a physical address
+ * @dst: destination virtual address
+ * @paddr: source physical address
+ * @len: length to copy
+ */
+void __init copy_from_paddr(void *dst, paddr_t paddr, unsigned long len)
+{
+    void *src = (void *)FIXMAP_ADDR(FIXMAP_MISC);
+
+    while (len) {
+        unsigned long l, s;
+
+        s = paddr & (PAGE_SIZE-1);
+        l = min(PAGE_SIZE - s, len);
+
+        set_fixmap(FIXMAP_MISC, maddr_to_mfn(paddr), PAGE_HYPERVISOR_WC);
+        memcpy(dst, src + s, l);
+        clean_dcache_va_range(dst, l);
+        clear_fixmap(FIXMAP_MISC);
+
+        paddr += l;
+        dst += l;
+        len -= l;
+    }
+}
+
 /*
  * Local variables:
  * mode: C
-- 
2.25.1