[Minios-devel] [UNIKRAFT PATCH 2/5] include/plat: Add flags for initramdisk memory regions

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

Add region flags to specify memory regions that contain init
modules (initramdisks).
This patch also introduces documentation about the meaning of the
individual flags.

Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
---
 include/uk/plat/memory.h | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/uk/plat/memory.h b/include/uk/plat/memory.h
index 60e52e6d..2788fd80 100644
--- a/include/uk/plat/memory.h
+++ b/include/uk/plat/memory.h
@@ -45,15 +45,21 @@ extern "C" {
 #endif
 
 /* Memory region flags */
-#define UKPLAT_MEMRF_FREE        (0x1)
-#define UKPLAT_MEMRF_RESERVED    (0x2)
-#define UKPLAT_MEMRF_READABLE    (0x4)
-#define UKPLAT_MEMRF_WRITABLE    (0x8)
+#define UKPLAT_MEMRF_FREE      (0x1)   /* Region with uninitialized memory */
+#define UKPLAT_MEMRF_RESERVED  (0x2)   /* Region is in use by platform */
+#define UKPLAT_MEMRF_EXTRADATA (0x4)   /* Contains additional loaded data
+                                        * (e.g., initramdisk)
+                                        */
+#define UKPLAT_MEMRF_READABLE  (0x10)  /* Region is readable */
+#define UKPLAT_MEMRF_WRITABLE  (0x20)  /* Region is writable */
 
 #define UKPLAT_MEMRF_ALLOCATABLE (UKPLAT_MEMRF_FREE \
                                  | UKPLAT_MEMRF_READABLE \
                                  | UKPLAT_MEMRF_WRITABLE)
 
+#define UKPLAT_MEMRF_INITRD      (UKPLAT_MEMRF_EXTRADATA \
+                                 | UKPLAT_MEMRF_READABLE)
+
 /* Descriptor of a memory region */
 struct ukplat_memregion_desc {
        void *base;
-- 
2.21.0


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