[PATCH v2 1/3] arm: bcmbca: add bcm6858 SoC support under CONFIG_ARCH_BCMBCA

William Zhang william.zhang at broadcom.com
Mon Aug 22 20:39:43 CEST 2022


BCM6858 is a Broadcom B53 based PON Gateway SoC. It is part of the BCA
(Broadband Carrier Access origin) chipset family. Like other broadband
SoC, this patch adds it under CONFIG_BCM6858 chip config and
CONFIG_ARCH_BCMBCA platform config.

This initial support includes a bare-bone implementation and the
original dts is updated with the one from linux next git repository.

The u-boot image can be loaded from flash or network to the entry point
address in the memory and boot from there to the console.

Signed-off-by: William Zhang <william.zhang at broadcom.com>

---

Changes in v2:
-Add help in BCM6858 Kconfig option to include the list of the supported
chips.

 MAINTAINERS                              |   1 +
 arch/arm/dts/Makefile                    |   2 +
 arch/arm/dts/bcm6858.dtsi                | 197 ++++++++++++++---------
 arch/arm/dts/bcm96858.dts                |  30 ++++
 arch/arm/mach-bcmbca/Kconfig             |  11 ++
 arch/arm/mach-bcmbca/Makefile            |   1 +
 arch/arm/mach-bcmbca/bcm6858/Kconfig     |  17 ++
 arch/arm/mach-bcmbca/bcm6858/Makefile    |   5 +
 arch/arm/mach-bcmbca/bcm6858/mmu_table.c |  32 ++++
 board/broadcom/bcmbca/Kconfig            |   7 +
 configs/bcm96858_defconfig               |  23 +++
 include/configs/bcm96858.h               |  11 ++
 12 files changed, 258 insertions(+), 79 deletions(-)
 create mode 100644 arch/arm/dts/bcm96858.dts
 create mode 100644 arch/arm/mach-bcmbca/bcm6858/Kconfig
 create mode 100644 arch/arm/mach-bcmbca/bcm6858/Makefile
 create mode 100644 arch/arm/mach-bcmbca/bcm6858/mmu_table.c
 create mode 100644 configs/bcm96858_defconfig
 create mode 100644 include/configs/bcm96858.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 1f50dad583ce..819fa5b87824 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -231,6 +231,7 @@ N:	bcm[9]?6756
 N:	bcm[9]?6813
 N:	bcm[9]?6846
 N:	bcm[9]?6856
+N:	bcm[9]?6858
 N:	bcm[9]?6878
 
 ARM BROADCOM BCMSTB
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a0ea9fa6029d..ee3475b97a40 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1182,6 +1182,8 @@ dtb-$(CONFIG_BCM6846) += \
 dtb-$(CONFIG_BCM6856) += \
 	bcm96856.dtb \
 	bcm968360bg.dtb
+dtb-$(CONFIG_BCM6858) += \
+	bcm96858.dtb
 dtb-$(CONFIG_BCM6878) += \
 	bcm96878.dtb
 
diff --git a/arch/arm/dts/bcm6858.dtsi b/arch/arm/dts/bcm6858.dtsi
index 02225621710b..19c4dd6fa7e4 100644
--- a/arch/arm/dts/bcm6858.dtsi
+++ b/arch/arm/dts/bcm6858.dtsi
@@ -1,122 +1,161 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2018 Philippe Reynes <philippe.reynes at softathome.com>
+ * Copyright 2022 Broadcom Ltd.
  */
 
-#include "skeleton64.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
 
 / {
-	compatible = "brcm,bcm6858";
+	compatible = "brcm,bcm6858", "brcm,bcmbca";
 	#address-cells = <2>;
 	#size-cells = <2>;
 
-	aliases {
-		spi0 = &hsspi;
-	};
+	interrupt-parent = <&gic>;
 
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
-		u-boot,dm-pre-reloc;
 
-		cpu0: cpu at 0 {
-			compatible = "arm,cortex-a53", "arm,armv8";
+		B53_0: cpu at 0 {
+			compatible = "brcm,brahma-b53";
 			device_type = "cpu";
 			reg = <0x0 0x0>;
-			next-level-cache = <&l2>;
-			u-boot,dm-pre-reloc;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
 		};
 
-		cpu1: cpu at 1 {
-			compatible = "arm,cortex-a53", "arm,armv8";
+		B53_1: cpu at 1 {
+			compatible = "brcm,brahma-b53";
 			device_type = "cpu";
 			reg = <0x0 0x1>;
-			next-level-cache = <&l2>;
-			u-boot,dm-pre-reloc;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
 		};
 
-		cpu2: cpu at 2 {
-			compatible = "arm,cortex-a53", "arm,armv8";
+		B53_2: cpu at 2 {
+			compatible = "brcm,brahma-b53";
 			device_type = "cpu";
 			reg = <0x0 0x2>;
-			next-level-cache = <&l2>;
-			u-boot,dm-pre-reloc;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
 		};
 
-		cpu3: cpu at 3 {
-			compatible = "arm,cortex-a53", "arm,armv8";
+		B53_3: cpu at 3 {
+			compatible = "brcm,brahma-b53";
 			device_type = "cpu";
 			reg = <0x0 0x3>;
-			next-level-cache = <&l2>;
-			u-boot,dm-pre-reloc;
+			next-level-cache = <&L2_0>;
+			enable-method = "psci";
 		};
 
-		l2: l2-cache0 {
+		L2_0: l2-cache0 {
 			compatible = "cache";
-			u-boot,dm-pre-reloc;
 		};
 	};
 
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	pmu: pmu {
+		compatible = "arm,armv8-pmuv3";
+		interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+			<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
+			<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
+			<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&B53_0>, <&B53_1>,
+			<&B53_2>, <&B53_3>;
+	};
+
 	clocks {
-		compatible = "simple-bus";
-		#address-cells = <2>;
-		#size-cells = <2>;
-		ranges;
 		u-boot,dm-pre-reloc;
 
-		periph_osc: periph-osc {
+		periph_clk: periph_clk {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
 			clock-frequency = <200000000>;
-			u-boot,dm-pre-reloc;
 		};
 
 		hsspi_pll: hsspi-pll {
 			compatible = "fixed-factor-clock";
 			#clock-cells = <0>;
-			clocks = <&periph_osc>;
+			clocks = <&periph_clk>;
 			clock-mult = <2>;
 			clock-div = <1>;
 		};
 
-		refclk50mhz: refclk50mhz {
-			compatible = "fixed-clock";
+		wdt_clk: wdt-clk {
+			compatible = "fixed-factor-clock";
 			#clock-cells = <0>;
-			clock-frequency = <50000000>;
+			clocks = <&periph_clk>;
+			clock-div = <4>;
+			clock-mult = <1>;
 		};
 	};
 
-	ubus {
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	axi at 81000000 {
 		compatible = "simple-bus";
-		#address-cells = <2>;
-		#size-cells = <2>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x81000000 0x8000>;
+
+		gic: interrupt-controller at 1000 {
+			compatible = "arm,gic-400";
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			reg = <0x1000 0x1000>, /* GICD */
+				<0x2000 0x2000>, /* GICC */
+				<0x4000 0x2000>, /* GICH */
+				<0x6000 0x2000>; /* GICV */
+			interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) |
+					IRQ_TYPE_LEVEL_HIGH)>;
+		};
+	};
+
+	bus at ff800000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0xff800000 0x800000>;
 		u-boot,dm-pre-reloc;
 
-		uart0: serial at ff800640 {
+		uart0: serial at 640 {
 			compatible = "brcm,bcm6345-uart";
-			reg = <0x0 0xff800640 0x0 0x18>;
-			clocks = <&periph_osc>;
-
+			reg = <0x640 0x18>;
+			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&periph_clk>;
+			clock-names = "refclk";
 			status = "disabled";
 		};
 
-		leds: led-controller at ff800800 {
+		leds: led-controller at 800 {
 			compatible = "brcm,bcm6858-leds";
-			reg = <0x0 0xff800800 0x0 0xe4>;
+			reg = <0x800 0xe4>;
 
 			status = "disabled";
 		};
 
-		wdt1: watchdog at ff802780 {
+		wdt1: watchdog at 2780 {
 			compatible = "brcm,bcm6345-wdt";
-			reg = <0x0 0xff802780 0x0 0x14>;
-			clocks = <&refclk50mhz>;
+			reg = <0x2780 0x14>;
+			clocks = <&wdt_clk>;
 		};
 
-		wdt2: watchdog at ff8027c0 {
+		wdt2: watchdog at 27c0 {
 			compatible = "brcm,bcm6345-wdt";
-			reg = <0x0 0xff8027c0 0x0 0x14>;
-			clocks = <&refclk50mhz>;
+			reg = <0x27c0 0x14>;
+			clocks = <&wdt_clk>;
 		};
 
 		wdt-reboot {
@@ -124,91 +163,91 @@
 			wdt = <&wdt1>;
 		};
 
-		gpio0: gpio-controller at 0xff800500 {
+		gpio0: gpio-controller at 500 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800500 0x0 0x4>,
-			      <0x0 0xff800520 0x0 0x4>;
+			reg = <0x500 0x4>,
+			      <0x520 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio1: gpio-controller at 0xff800504 {
+		gpio1: gpio-controller at 504 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800504 0x0 0x4>,
-			      <0x0 0xff800524 0x0 0x4>;
+			reg = <0x504 0x4>,
+			      <0x524 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio2: gpio-controller at 0xff800508 {
+		gpio2: gpio-controller at 508 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800508 0x0 0x4>,
-			      <0x0 0xff800528 0x0 0x4>;
+			reg = <0x508 0x4>,
+			      <0x528 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio3: gpio-controller at 0xff80050c {
+		gpio3: gpio-controller at 50c {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff80050c 0x0 0x4>,
-			      <0x0 0xff80052c 0x0 0x4>;
+			reg = <0x50c 0x4>,
+			      <0x52c 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio4: gpio-controller at 0xff800510 {
+		gpio4: gpio-controller at 510 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800510 0x0 0x4>,
-			      <0x0 0xff800530 0x0 0x4>;
+			reg = <0x510 0x4>,
+			      <0x530 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio5: gpio-controller at 0xff800514 {
+		gpio5: gpio-controller at 514 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800514 0x0 0x4>,
-			      <0x0 0xff800534 0x0 0x4>;
+			reg = <0x514 0x4>,
+			      <0x534 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio6: gpio-controller at 0xff800518 {
+		gpio6: gpio-controller at 518 {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff800518 0x0 0x4>,
-			      <0x0 0xff800538 0x0 0x4>;
+			reg = <0x518 0x4>,
+			      <0x538 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		gpio7: gpio-controller at 0xff80051c {
+		gpio7: gpio-controller at 51c {
 			compatible = "brcm,bcm6345-gpio";
-			reg = <0x0 0xff80051c 0x0 0x4>,
-			      <0x0 0xff80053c 0x0 0x4>;
+			reg = <0x51c 0x4>,
+			      <0x53c 0x4>;
 			gpio-controller;
 			#gpio-cells = <2>;
 
 			status = "disabled";
 		};
 
-		hsspi: spi-controller at ff801000 {
+		hsspi: spi-controller at 1000 {
 			compatible = "brcm,bcm6328-hsspi";
 			#address-cells = <1>;
 			#size-cells = <0>;
-			reg = <0x0 0xff801000 0x0 0x600>;
+			reg = <0x1000 0x600>;
 			clocks = <&hsspi_pll>, <&hsspi_pll>;
 			clock-names = "hsspi", "pll";
 			spi-max-frequency = <100000000>;
@@ -217,14 +256,14 @@
 			status = "disabled";
 		};
 
-		nand: nand-controller at ff801800 {
+		nand: nand-controller at 1800 {
 			compatible = "brcm,nand-bcm6858",
 				     "brcm,brcmnand-v5.0",
 				     "brcm,brcmnand";
 			reg-names = "nand", "nand-int-base", "nand-cache";
-			reg = <0x0 0xff801800 0x0 0x180>,
-			      <0x0 0xff802000 0x0 0x10>,
-			      <0x0 0xff801c00 0x0 0x200>;
+			reg = <0x1800 0x180>,
+			      <0x2000 0x10>,
+			      <0x1c00 0x200>;
 			parameter-page-big-endian = <0>;
 
 			status = "disabled";
diff --git a/arch/arm/dts/bcm96858.dts b/arch/arm/dts/bcm96858.dts
new file mode 100644
index 000000000000..0cbf582f5d54
--- /dev/null
+++ b/arch/arm/dts/bcm96858.dts
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Broadcom Ltd.
+ */
+
+/dts-v1/;
+
+#include "bcm6858.dtsi"
+
+/ {
+	model = "Broadcom BCM96858 Reference Board";
+	compatible = "brcm,bcm96858", "brcm,bcm6858", "brcm,bcmbca";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x08000000>;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
diff --git a/arch/arm/mach-bcmbca/Kconfig b/arch/arm/mach-bcmbca/Kconfig
index f35f02c59772..5b977734df41 100644
--- a/arch/arm/mach-bcmbca/Kconfig
+++ b/arch/arm/mach-bcmbca/Kconfig
@@ -93,6 +93,16 @@ config BCM6856
 	  Broadcom BCM6856 is a dual core Brahma-B53 ARMv8 based xPON Gateway
 	  SoC. This SoC family includes BCM6856, BCM6836 and BCM4910.
 
+config BCM6858
+	bool "Support for Broadcom 6858 Family"
+	select ARM64
+	select SYS_ARCH_TIMER
+	select DM_SERIAL
+	select BCM6345_SERIAL
+	help
+	  Broadcom BCM6858 is a quad core Brahma-B53 ARMv8 based xPON Gateway
+	  SoC. This SoC family includes BCM6858, BCM49508, BCM5504X and BCM6545.
+
 config BCM6878
 	bool "Support for Broadcom 6878 Family"
 	select SYS_ARCH_TIMER
@@ -112,6 +122,7 @@ source "arch/arm/mach-bcmbca/bcm6756/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6813/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6846/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6856/Kconfig"
+source "arch/arm/mach-bcmbca/bcm6858/Kconfig"
 source "arch/arm/mach-bcmbca/bcm6878/Kconfig"
 
 endif
diff --git a/arch/arm/mach-bcmbca/Makefile b/arch/arm/mach-bcmbca/Makefile
index 20f827512005..c06809417499 100644
--- a/arch/arm/mach-bcmbca/Makefile
+++ b/arch/arm/mach-bcmbca/Makefile
@@ -15,4 +15,5 @@ obj-$(CONFIG_BCM6756) += bcm6756/
 obj-$(CONFIG_BCM6813) += bcm6813/
 obj-$(CONFIG_BCM6846) += bcm6846/
 obj-$(CONFIG_BCM6856) += bcm6856/
+obj-$(CONFIG_BCM6858) += bcm6858/
 obj-$(CONFIG_BCM6878) += bcm6878/
diff --git a/arch/arm/mach-bcmbca/bcm6858/Kconfig b/arch/arm/mach-bcmbca/bcm6858/Kconfig
new file mode 100644
index 000000000000..a6504bae1f18
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6858/Kconfig
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2022 Broadcom Ltd
+#
+
+if BCM6858
+
+config TARGET_BCM96858
+	bool "Broadcom 6858 Reference Board"
+	depends on ARCH_BCMBCA
+
+config SYS_SOC
+	default "bcm6858"
+
+source "board/broadcom/bcmbca/Kconfig"
+
+endif
diff --git a/arch/arm/mach-bcmbca/bcm6858/Makefile b/arch/arm/mach-bcmbca/bcm6858/Makefile
new file mode 100644
index 000000000000..62624977034b
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6858/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2022 Broadcom Ltd
+#
+obj-y += mmu_table.o
diff --git a/arch/arm/mach-bcmbca/bcm6858/mmu_table.c b/arch/arm/mach-bcmbca/bcm6858/mmu_table.c
new file mode 100644
index 000000000000..898291075f5e
--- /dev/null
+++ b/arch/arm/mach-bcmbca/bcm6858/mmu_table.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright 2022 Broadcom Ltd.
+ */
+#include <common.h>
+#include <asm/armv8/mmu.h>
+#include <linux/sizes.h>
+
+static struct mm_region bcm96858_mem_map[] = {
+		{
+				.virt = 0x00000000UL,
+				.phys = 0x00000000UL,
+				.size = 1UL * SZ_1G,
+				.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+						PTE_BLOCK_INNER_SHARE
+		},
+		{
+				/* SoC peripheral */
+				.virt = 0xff800000UL,
+				.phys = 0xff800000UL,
+				.size = 0x100000,
+				.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+						PTE_BLOCK_NON_SHARE |
+						PTE_BLOCK_PXN | PTE_BLOCK_UXN
+		},
+		{
+				/* List terminator */
+				0,
+		}
+};
+
+struct mm_region *mem_map = bcm96858_mem_map;
diff --git a/board/broadcom/bcmbca/Kconfig b/board/broadcom/bcmbca/Kconfig
index efe504919a0f..7da9e954d4b2 100644
--- a/board/broadcom/bcmbca/Kconfig
+++ b/board/broadcom/bcmbca/Kconfig
@@ -93,6 +93,13 @@ config SYS_CONFIG_NAME
 
 endif
 
+if TARGET_BCM96858
+
+config SYS_CONFIG_NAME
+	default "bcm96858"
+
+endif
+
 if TARGET_BCM96878
 
 config SYS_CONFIG_NAME
diff --git a/configs/bcm96858_defconfig b/configs/bcm96858_defconfig
new file mode 100644
index 000000000000..5f7be1107e8a
--- /dev/null
+++ b/configs/bcm96858_defconfig
@@ -0,0 +1,23 @@
+CONFIG_ARM=y
+CONFIG_COUNTER_FREQUENCY=50000000
+CONFIG_ARCH_BCMBCA=y
+CONFIG_SYS_TEXT_BASE=0x01000000
+CONFIG_SYS_MALLOC_LEN=0x2000000
+CONFIG_SYS_MALLOC_F_LEN=0x8000
+CONFIG_BCM6858=y
+CONFIG_TARGET_BCM96858=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_DEFAULT_DEVICE_TREE="bcm96858"
+CONFIG_IDENT_STRING=" Broadcom BCM6858"
+CONFIG_SYS_LOAD_ADDR=0x01000000
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x2000000
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_MAXARGS=64
+CONFIG_SYS_BOOTM_LEN=0x4000000
+CONFIG_CMD_CACHE=y
+CONFIG_OF_EMBED=y
+CONFIG_CLK=y
diff --git a/include/configs/bcm96858.h b/include/configs/bcm96858.h
new file mode 100644
index 000000000000..4e584b41fb37
--- /dev/null
+++ b/include/configs/bcm96858.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2022 Broadcom Ltd.
+ */
+
+#ifndef __BCM96858_H
+#define __BCM96858_H
+
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+
+#endif
-- 
2.37.1

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