Re: [RFC v1 1/5] xen/arm: add support for Renesas R-Car Gen3 platform

[Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>]

On Tue, Dec 14, 2021 at 11:35 AM Oleksii Moisieiev <Oleksii_Moisieiev@xxxxxxxx> wrote:

Hi Oleksii

[sorry for the possible format issues]

Implementation includes platform-specific smc handler for rcar3 platform.

Signed-off-by: Oleksii Moisieiev <oleksii_moisieiev@xxxxxxxx>
---
 xen/arch/arm/platforms/Makefile |  1 +
 xen/arch/arm/platforms/rcar3.c  | 46 +++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 xen/arch/arm/platforms/rcar3.c

diff --git a/xen/arch/arm/platforms/Makefile b/xen/arch/arm/platforms/Makefile
index 8632f4115f..b64c25de6c 100644
--- a/xen/arch/arm/platforms/Makefile
+++ b/xen/arch/arm/platforms/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_ALL32_PLAT) += exynos5.o
 obj-$(CONFIG_ALL32_PLAT) += midway.o
 obj-$(CONFIG_ALL32_PLAT) += omap5.o
 obj-$(CONFIG_ALL32_PLAT) += rcar2.o
+obj-$(CONFIG_RCAR3) += rcar3.o
 obj-$(CONFIG_ALL64_PLAT) += seattle.o
 obj-$(CONFIG_ALL_PLAT)   += sunxi.o
 obj-$(CONFIG_ALL64_PLAT) += thunderx.o
diff --git a/xen/arch/arm/platforms/rcar3.c b/xen/arch/arm/platforms/rcar3.c
new file mode 100644
index 0000000000..d740145c71
--- /dev/null
+++ b/xen/arch/arm/platforms/rcar3.c
@@ -0,0 +1,46 @@
+/*
+ * xen/arch/arm/platforms/rcar3.c
+ *
+ * Renesas R-Car Gen3 specific settings
+ *
+ * Oleksii Moisieiev <oleksii_moisieiev@xxxxxxxx>
+ * Copyright (C) 2021 EPAM Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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/platform.h>
+
+static bool rcar3_smc(struct cpu_user_regs *regs)
+{
+    return false;
+}
+
+static const char *const rcar3_dt_compat[] __initconst =
+{
+    "renesas,r8a7795",
+    "renesas,r8a7796",

Please note that since Linux commit: "9c9f7891093b02eb64ca4e1c7ab776a4296c058f soc: renesas: Identify R-Car M3-W+"
the compatible string for R-Car M3-W+ (ES3.0) SoC is "renesas,r8a77961". So in case we want to have vSCMI feature on this new SoC revision as well we will need
to extend the compatible list. 

+    NULL
+};
+
+PLATFORM_START(rcar3, "Renesas R-Car Gen3")
+    .compatible = rcar3_dt_compat,
+    .smc = rcar3_smc
+PLATFORM_END
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
2.27.0

--

Regards,

Oleksandr Tyshchenko