From: Stefano Stabellini <sstabellini@kernel.org>
To: xen-devel@lists.xen.org
Cc: edgar.iglesias@xilinx.com,
Stefano Stabellini <stefanos@xilinx.com>,
julien.grall@arm.com, sstabellini@kernel.org,
saeed.nowshadi@xilinx.com
Subject: [PATCH v5 2/7] xen/arm: zynqmp: Forward plaform specific firmware calls
Date: Mon, 3 Dec 2018 13:03:36 -0800 [thread overview]
Message-ID: <1543871021-315-2-git-send-email-sstabellini@kernel.org> (raw)
In-Reply-To: <alpine.DEB.2.10.1812031302070.13706@sstabellini-ThinkPad-X260>
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
From: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Introduce zynqmp_eemi: a function responsible for implementing access
controls over the firmware calls. Only calls that are allowed are
forwarded to the firmware.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
---
Changes in v4:
- fix typo
- add header guard
- add emacs magic
- remove #includes that will only be used later
- add copyright notice to header
- remove SMCCC 1.1 check
---
xen/arch/arm/platforms/Makefile | 1 +
xen/arch/arm/platforms/xilinx-zynqmp-eemi.c | 34 ++++++++++++++++++++++
xen/arch/arm/platforms/xilinx-zynqmp.c | 11 +++++++
xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h | 30 +++++++++++++++++++
4 files changed, 76 insertions(+)
create mode 100644 xen/arch/arm/platforms/xilinx-zynqmp-eemi.c
create mode 100644 xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h
diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile
index a79bdb9..fe8e0c7 100644
--- a/xen/arch/arm/platforms/Makefile
+++ b/xen/arch/arm/platforms/Makefile
@@ -9,3 +9,4 @@ obj-y += sunxi.o
obj-$(CONFIG_ARM_64) += thunderx.o
obj-$(CONFIG_ARM_64) += xgene-storm.o
obj-$(CONFIG_MPSOC_PLATFORM) += xilinx-zynqmp.o
+obj-$(CONFIG_MPSOC_PLATFORM) += xilinx-zynqmp-eemi.o
diff --git a/xen/arch/arm/platforms/xilinx-zynqmp-eemi.c b/xen/arch/arm/platforms/xilinx-zynqmp-eemi.c
new file mode 100644
index 0000000..369bb3f
--- /dev/null
+++ b/xen/arch/arm/platforms/xilinx-zynqmp-eemi.c
@@ -0,0 +1,34 @@
+/*
+ * xen/arch/arm/platforms/xilinx-zynqmp-eemi.c
+ *
+ * Xilinx ZynqMP EEMI API
+ *
+ * Copyright (c) 2018 Xilinx Inc.
+ * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms and conditions of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <asm/regs.h>
+#include <asm/platforms/xilinx-zynqmp-eemi.h>
+
+bool zynqmp_eemi(struct cpu_user_regs *regs)
+{
+ return false;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/arm/platforms/xilinx-zynqmp.c b/xen/arch/arm/platforms/xilinx-zynqmp.c
index d8ceded..9c174d2 100644
--- a/xen/arch/arm/platforms/xilinx-zynqmp.c
+++ b/xen/arch/arm/platforms/xilinx-zynqmp.c
@@ -18,6 +18,8 @@
*/
#include <asm/platform.h>
+#include <asm/platforms/xilinx-zynqmp-eemi.h>
+#include <asm/smccc.h>
static const char * const zynqmp_dt_compat[] __initconst =
{
@@ -32,8 +34,17 @@ static const struct dt_device_match zynqmp_blacklist_dev[] __initconst =
{ /* sentinel */ },
};
+static bool zynqmp_smc(struct cpu_user_regs *regs)
+{
+ if ( !is_64bit_domain(current->domain) )
+ return false;
+
+ return zynqmp_eemi(regs);
+}
+
PLATFORM_START(xilinx_zynqmp, "Xilinx ZynqMP")
.compatible = zynqmp_dt_compat,
+ .smc = zynqmp_smc,
.blacklist_dev = zynqmp_blacklist_dev,
PLATFORM_END
diff --git a/xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h b/xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h
new file mode 100644
index 0000000..43cefb5
--- /dev/null
+++ b/xen/include/asm-arm/platforms/xilinx-zynqmp-eemi.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2018 Xilinx Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms and conditions of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ASM_ARM_PLATFORMS_ZYNQMP_H
+#define __ASM_ASM_PLATFORMS_ZYNQMP_H
+
+#include <asm/processor.h>
+
+extern bool zynqmp_eemi(struct cpu_user_regs *regs);
+
+#endif /* __ASM_ARM_PLATFORMS_ZYNQMP_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
1.9.1
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next prev parent reply other threads:[~2018-12-03 21:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 21:02 [PATCH v5 0/7] zynqmp: Add forwarding of platform specific firmware calls Stefano Stabellini
2018-12-03 21:03 ` [PATCH v5 1/7] xen/arm: introduce platform_smc Stefano Stabellini
2018-12-03 21:07 ` Stefano Stabellini
2018-12-11 14:54 ` Julien Grall
2018-12-03 21:03 ` Stefano Stabellini [this message]
2018-12-11 15:03 ` [PATCH v5 2/7] xen/arm: zynqmp: Forward plaform specific firmware calls Julien Grall
2018-12-11 18:50 ` Stefano Stabellini
2018-12-11 19:09 ` Julien Grall
2018-12-11 20:19 ` Stefano Stabellini
2018-12-11 20:27 ` Julien Grall
2018-12-03 21:03 ` [PATCH v5 3/7] xen/arm: zynqmp: introduce zynqmp specific defines Stefano Stabellini
2018-12-11 15:21 ` Julien Grall
2018-12-11 19:22 ` Stefano Stabellini
2018-12-12 10:29 ` Julien Grall
2018-12-12 23:55 ` Stefano Stabellini
2018-12-13 15:50 ` Julien Grall
2018-12-03 21:03 ` [PATCH v5 4/7] xen: introduce mfn_init macro Stefano Stabellini
2018-12-04 10:25 ` Jan Beulich
2018-12-04 19:38 ` Stefano Stabellini
2018-12-05 8:27 ` Jan Beulich
2018-12-12 23:56 ` Stefano Stabellini
2018-12-03 21:03 ` [PATCH v5 5/7] xen/arm: zynqmp: eemi access control Stefano Stabellini
2018-12-11 15:37 ` Julien Grall
2018-12-12 23:57 ` Stefano Stabellini
2018-12-13 15:58 ` Julien Grall
2018-12-03 21:03 ` [PATCH v5 6/7] xen/arm: zynqmp: implement zynqmp_eemi Stefano Stabellini
2018-12-11 15:55 ` Julien Grall
2018-12-11 22:23 ` Stefano Stabellini
2018-12-12 10:48 ` Julien Grall
2018-12-12 23:56 ` Stefano Stabellini
2018-12-13 15:59 ` Julien Grall
2018-12-03 21:03 ` [PATCH v5 7/7] xen/arm: zynqmp: Remove blacklist of ZynqMP's PM node Stefano Stabellini
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