[U-Boot] [PATCH 3/3] arm64: zynqmp: Check pmufw version

[Michal Simek]

If PMUFW version is not v0.3 then panic.
ZynqMP switch to CCF based clock driver which requires
PMUFW to be present at certain version.
This patch ensure that you use correct and tested PMUFW
binary.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 arch/arm/cpu/armv8/zynqmp/cpu.c              | 35 ++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-zynqmp/sys_proto.h |  1 +
 board/xilinx/zynqmp/zynqmp.c                 |  8 +++++++
 include/configs/xilinx_zynqmp.h              |  2 ++
 4 files changed, 46 insertions(+)

diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c
index f7ed179c1866..94ecf9066028 100644
--- a/arch/arm/cpu/armv8/zynqmp/cpu.c
+++ b/arch/arm/cpu/armv8/zynqmp/cpu.c
@@ -129,6 +129,41 @@ int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3,
 	return regs.regs[0];
 }
 
+#define ZYNQMP_SIP_SVC_GET_API_VERSION		0xC2000001
+
+#define ZYNQMP_PM_VERSION_MAJOR		0
+#define ZYNQMP_PM_VERSION_MINOR		3
+#define ZYNQMP_PM_VERSION_MAJOR_SHIFT	16
+#define ZYNQMP_PM_VERSION_MINOR_MASK	0xFFFF
+
+#define ZYNQMP_PM_VERSION	\
+	((ZYNQMP_PM_VERSION_MAJOR << ZYNQMP_PM_VERSION_MAJOR_SHIFT) | \
+				 ZYNQMP_PM_VERSION_MINOR)
+
+#if defined(CONFIG_CLK_ZYNQMP)
+void zynqmp_pmufw_version(void)
+{
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	u32 pm_api_version;
+
+	ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0, 0, 0,
+			 ret_payload);
+	pm_api_version = ret_payload[1];
+
+	if (ret)
+		panic("PMUFW is not found - Please load it!\n");
+
+	printf("PMUFW:\tv%d.%d\n",
+	       pm_api_version >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
+	       pm_api_version & ZYNQMP_PM_VERSION_MINOR_MASK);
+
+	if (pm_api_version != ZYNQMP_PM_VERSION)
+		panic("PMUFW version error. Expected: v%d.%d\n",
+		      ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
+}
+#endif
+
 int zynqmp_mmio_write(const u32 address,
 		      const u32 mask,
 		      const u32 value)
diff --git a/arch/arm/include/asm/arch-zynqmp/sys_proto.h b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
index 4ae1bb6eef7c..d91d98a1196c 100644
--- a/arch/arm/include/asm/arch-zynqmp/sys_proto.h
+++ b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
@@ -18,6 +18,7 @@ void psu_init(void);
 
 void handoff_setup(void);
 
+void zynqmp_pmufw_version(void);
 int zynqmp_mmio_write(const u32 address, const u32 mask, const u32 value);
 int zynqmp_mmio_read(const u32 address, u32 *value);
 int invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2, u32 arg3,
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 3849b5885dfe..51a3d9f276b7 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -113,6 +113,14 @@ static char *zynqmp_get_silicon_idcode_name(void)
 }
 #endif
 
+int board_early_init_f(void)
+{
+#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_CLK_ZYNQMP)
+	zynqmp_pmufw_version();
+#endif
+	return 0;
+}
+
 #define ZYNQMP_VERSION_SIZE	9
 
 int board_init(void)
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index 87a5da3fb84b..a3ece28dc05a 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -300,4 +300,6 @@
 #endif
 #endif
 
+#define CONFIG_BOARD_EARLY_INIT_F
+
 #endif /* __XILINX_ZYNQMP_H */
-- 
1.9.1