From c51430133718d5ac9c0983c0f9dd4714f02c6184 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 11 Feb 2020 12:43:14 +0100 Subject: [PATCH] arm64: zynqmp: Print multiboot register value in EL3 Multi boot register can be used for using different boot images and design better boot strategy. Let EL3 SPL or U-Boot to read it and print it. Signed-off-by: Michal Simek --- arch/arm/mach-zynqmp/include/mach/hardware.h | 4 +++- board/xilinx/zynqmp/zynqmp.c | 14 ++++++++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-zynqmp/include/mach/hardware.h b/arch/arm/mach-zynqmp/include/mach/hardware.h index fd361c5ce8..a0acfa2ff1 100644 --- a/arch/arm/mach-zynqmp/include/mach/hardware.h +++ b/arch/arm/mach-zynqmp/include/mach/hardware.h @@ -128,7 +128,9 @@ struct apu_regs { #define ZYNQMP_SILICON_VER_SHIFT 12 struct csu_regs { - u32 reserved0[17]; + u32 reserved0[4]; + u32 multi_boot; + u32 reserved1[12]; u32 version; }; diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 8bdc67748e..ba1a126fbf 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -328,6 +328,17 @@ int board_early_init_f(void) return ret; } +static int multi_boot(void) +{ + u32 multiboot; + + multiboot = readl(&csu_base->multi_boot); + + printf("Multiboot:\t%x\n", multiboot); + + return 0; +} + int board_init(void) { struct udevice *dev; @@ -356,6 +367,9 @@ int board_init(void) } #endif + if (current_el() == 3) + multi_boot(); + return 0; } -- 2.39.5