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From: Anastasiia Lukianenko <vicooodin@gmail.com>
To: u-boot@lists.denx.de
Subject: [PATCH v2 17/18] board: xen: De-initialize before jumping to Linux
Date: Mon, 20 Jul 2020 14:02:23 +0300	[thread overview]
Message-ID: <20200720110224.28851-18-vicooodin@gmail.com> (raw)
In-Reply-To: <20200720110224.28851-1-vicooodin@gmail.com>

From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>

Free resources used by Xen board before jumping to Linux kernel.

Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 board/xen/xenguest_arm64/xenguest_arm64.c | 6 ++++++
 drivers/xen/hypervisor.c                  | 8 ++++++++
 include/xen.h                             | 8 ++++++++
 3 files changed, 22 insertions(+)

diff --git a/board/xen/xenguest_arm64/xenguest_arm64.c b/board/xen/xenguest_arm64/xenguest_arm64.c
index 9861edac33..927d87ae37 100644
--- a/board/xen/xenguest_arm64/xenguest_arm64.c
+++ b/board/xen/xenguest_arm64/xenguest_arm64.c
@@ -12,6 +12,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <malloc.h>
+#include <xen.h>
 
 #include <asm/io.h>
 #include <asm/armv8/mmu.h>
@@ -194,3 +195,8 @@ int print_cpuinfo(void)
 	return 0;
 }
 
+void board_cleanup_before_linux(void)
+{
+	xen_fini();
+}
+
diff --git a/drivers/xen/hypervisor.c b/drivers/xen/hypervisor.c
index 58b0865e6a..178c206f5b 100644
--- a/drivers/xen/hypervisor.c
+++ b/drivers/xen/hypervisor.c
@@ -242,3 +242,11 @@ void xen_init(void)
 	init_gnttab();
 }
 
+void xen_fini(void)
+{
+	debug("%s\n", __func__);
+
+	fini_gnttab();
+	fini_xenbus();
+	fini_events();
+}
diff --git a/include/xen.h b/include/xen.h
index 686b7148b5..a952a2c84b 100644
--- a/include/xen.h
+++ b/include/xen.h
@@ -13,4 +13,12 @@
  */
 void xen_init(void);
 
+/**
+ * xen_fini() - Board cleanup before Linux kernel start
+ *
+ * Unmap Xen memory pages the specified guest's pseudophysical
+ * address space and unbind all event channels.
+ */
+void xen_fini(void);
+
 #endif /* __XEN_H__ */
-- 
2.17.1

  parent reply	other threads:[~2020-07-20 11:02 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-20 11:02 [PATCH v2 00/18] Add new board: Xen guest for ARM64 Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 01/18] Add MIT License Anastasiia Lukianenko
2020-07-28 18:58   ` Simon Glass
2020-07-29  8:32     ` Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 02/18] Kconfig: Introduce CONFIG_XEN Anastasiia Lukianenko
2020-07-28 18:58   ` Simon Glass
2020-07-29  8:42     ` Anastasiia Lukianenko
2020-07-29 13:03       ` Simon Glass
2020-08-07  9:22         ` Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 03/18] xen: Add essential and required interface headers Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 04/18] board: Introduce xenguest_arm64 board Anastasiia Lukianenko
2020-07-31  5:00   ` AKASHI Takahiro
2020-08-03  9:07     ` Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 05/18] xen: Port Xen hypervizor related code from mini-os Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 06/18] xen: Port Xen event channel driver " Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 07/18] serial: serial_xen: Add Xen PV serial driver Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 08/18] linux/compat.h: Add wait_event_timeout macro Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 09/18] lib: sscanf: add sscanf implementation Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 10/18] xen: Port Xen bus driver from mini-os Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 11/18] xen: Port Xen grant table " Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 12/18] xen: pvblock: Add initial support for para-virtualized block driver Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 13/18] xen: pvblock: Enumerate virtual block devices Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 14/18] xen: pvblock: Read XenStore configuration and initialize Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 15/18] xen: pvblock: Implement front-back protocol and do IO Anastasiia Lukianenko
2020-07-20 11:02 ` [PATCH v2 16/18] xen: pvblock: Print found devices indices Anastasiia Lukianenko
2020-07-20 11:02 ` Anastasiia Lukianenko [this message]
2020-07-20 11:02 ` [PATCH v2 18/18] doc: xen: Add Xen guest ARM64 board documentation Anastasiia Lukianenko
2020-07-30 19:25 ` [PATCH v2 00/18] Add new board: Xen guest for ARM64 Julien Grall
2020-08-01 10:14   ` Anastasiia Lukianenko

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