From 25a91f300578d5905029d5f44799ef71a755ff02 Mon Sep 17 00:00:00 2001
From: Jorge Ramirez-Ortiz <jorge@foundries.io>
Date: Wed, 13 Oct 2021 19:04:47 +0200
Subject: [PATCH] arm64: zynqmp: Print the secure boot status information
Output the secure boot configuration to the console.
Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Link: https://lore.kernel.org/r/20211013170447.10414-1-jorge@foundries.io
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
arch/arm/mach-zynqmp/include/mach/hardware.h | 6 +++++-
board/xilinx/zynqmp/zynqmp.c | 14 ++++++++++++++
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-zynqmp/include/mach/hardware.h b/arch/arm/mach-zynqmp/include/mach/hardware.h
index e6a3ee4a57..a70d6d611b 100644
--- a/arch/arm/mach-zynqmp/include/mach/hardware.h
+++ b/arch/arm/mach-zynqmp/include/mach/hardware.h
@@ -152,8 +152,12 @@ struct apu_regs {
#define CSU_JTAG_CHAIN_WR_SETUP GENMASK(1, 0)
#define CSU_PCAP_PROG_RELEASE_PL BIT(0)
+#define ZYNQMP_CSU_STATUS_AUTHENTICATED BIT(0)
+#define ZYNQMP_CSU_STATUS_ENCRYPTED BIT(1)
+
struct csu_regs {
- u32 reserved0[4];
+ u32 status;
+ u32 reserved0[3];
u32 multi_boot;
u32 reserved1[7];
u32 jtag_chain_status_wr;
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 2b5239ccb4..242e143cbf 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -373,6 +373,18 @@ static void restore_jtag(void)
}
#endif
+static void print_secure_boot(void)
+{
+ u32 status = 0;
+
+ if (zynqmp_mmio_read((ulong)&csu_base->status, &status))
+ return;
+
+ printf("Secure Boot:\t%sauthenticated, %sencrypted\n",
+ status & ZYNQMP_CSU_STATUS_AUTHENTICATED ? "" : "not ",
+ status & ZYNQMP_CSU_STATUS_ENCRYPTED ? "" : "not ");
+}
+
#define PS_SYSMON_ANALOG_BUS_VAL 0x3210
#define PS_SYSMON_ANALOG_BUS_REG 0xFFA50914
@@ -413,6 +425,8 @@ int board_init(void)
fpga_add(fpga_xilinx, &zynqmppl);
#endif
+ /* display secure boot information */
+ print_secure_boot();
if (current_el() == 3)
printf("Multiboot:\t%d\n", multi_boot());
--
2.39.5