[PATCH v3 1/5] xen: define ACPI and DT device info sections macros

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

Introduce macros to define device information sections based on
the configuration of ACPI or device tree support. These sections
are required for common code of device initialization and getting
an information about a device.

These macros are expected to be used across different
architectures (Arm, PPC, RISC-V), so they are moved to
the common xen/xen.lds.h, based on their original definition
in Arm.

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 Changes in V2:
  - drop SEC* at the end of ACPI AND DT device info
    section mancros.
  - refactor ADEV_INFO and DT_DEV_INFO macros.
---
 xen/include/xen/xen.lds.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/xen/include/xen/xen.lds.h b/xen/include/xen/xen.lds.h
index a17810bb28..b85c5e6576 100644
--- a/xen/include/xen/xen.lds.h
+++ b/xen/include/xen/xen.lds.h
@@ -114,6 +114,11 @@
 
 /* List of constructs other than *_SECTIONS in alphabetical order. */
 
+#define ADEV_INFO     \
+      _asdevice = .;  \
+      *(.adev.info)   \
+      _aedevice = .;
+
 #define BUGFRAMES                               \
     __start_bug_frames_0 = .;                   \
     *(.bug_frames.0)                            \
@@ -131,6 +136,11 @@
     *(.bug_frames.3)                            \
     __stop_bug_frames_3 = .;
 
+#define DT_DEV_INFO \
+      _sdevice = .; \
+      *(.dev.info)  \
+      _edevice = .;
+
 #ifdef CONFIG_HYPFS
 #define HYPFS_PARAM              \
        . = ALIGN(POINTER_ALIGN); \
-- 
2.46.1