bcm968580xref: add initial support

This add the initial support of the broadcom reference
board bcm968580xref with a bcm6858 SoC.

This board has 512 MB of ram, 256 MB of flash (nand),
2 usb port, 1 uart, 4 ethernet ports (LAN), 1 ethernet port (WAN).

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

arch/arm/dts/bcm968580xref.dts

@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+/dts-v1/;
+
+#include "bcm6858.dtsi"
+
+/ {
+	model = "Broadcom bcm68580xref";
+	compatible = "broadcom,bcm68580xref", "brcm,bcm6858";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x20000000>;
+	};
+};
+
+&uart0 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};

board/broadcom/bcm968580xref/Kconfig

@@ -0,0 +1,17 @@
+if ARCH_BCM6858
+
+config SYS_VENDOR
+	default "broadcom"
+
+config SYS_BOARD
+	default "bcm968580xref"
+
+config SYS_CONFIG_NAME
+	default "broadcom_bcm968580xref"
+
+endif
+
+config TARGET_BCM968580XREF
+	bool "Support Broadcom bcm968580xref"
+	depends on ARCH_BCM6858
+	select ARM64

board/broadcom/bcm968580xref/MAINTAINERS

@@ -0,0 +1,6 @@
+BROADCOM BCM968580XREF
+M:	Philippe Reynes <philippe.reynes@softathome.com>
+S:	Maintained
+F:	board/broadcom/bcm968580xref/
+F:	include/configs/broadcom_bcm968580xref.h
+F:	configs/bcm968580_ram_defconfig

board/broadcom/bcm968580xref/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y	+= bcm968580xref.o

board/broadcom/bcm968580xref/bcm968580xref.c

@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <linux/io.h>
+
+#ifdef CONFIG_ARM64
+#include <asm/armv8/mmu.h>
+
+static struct mm_region broadcom_bcm968580xref_mem_map[] = {
+	{
+		/* RAM */
+		.virt = 0x00000000UL,
+		.phys = 0x00000000UL,
+		.size = 8UL * SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		/* SoC */
+		.virt = 0x80000000UL,
+		.phys = 0x80000000UL,
+		.size = 0xff80000000UL,
+		.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 = broadcom_bcm968580xref_mem_map;
+#endif
+
+int board_init(void)
+{
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_mem_size_base() != 0)
+		printf("fdtdec_setup_mem_size_base() has failed\n");
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return 0;
+}

configs/bcm968580_ram_defconfig

@@ -0,0 +1,36 @@
+CONFIG_ARM=y
+CONFIG_ARCH_BCM6858=y
+CONFIG_SYS_TEXT_BASE=0x10000000
+CONFIG_SYS_MALLOC_F_LEN=0x8000
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x400
+CONFIG_TARGET_BCM968580XREF=y
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_TPL_SYS_MALLOC_F_LEN=0x400
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_IMAGE_FORMAT_LEGACY=y
+CONFIG_SUPPORT_RAW_INITRD=y
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_BOOTEFI_SELFTEST=y
+CONFIG_DOS_PARTITION=y
+CONFIG_ISO_PARTITION=y
+CONFIG_EFI_PARTITION=y
+CONFIG_OF_EMBED=y
+CONFIG_DEFAULT_DEVICE_TREE="bcm968580xref"
+# CONFIG_NET is not set
+CONFIG_BLK=y
+CONFIG_CLK=y
+CONFIG_FIRMWARE=y
+# CONFIG_MMC is not set
+CONFIG_SPECIFY_CONSOLE_INDEX=y
+# CONFIG_SPL_SERIAL_PRESENT is not set
+CONFIG_CONS_INDEX=0
+CONFIG_DM_SERIAL=y
+CONFIG_SERIAL_SEARCH_ALL=y
+CONFIG_BCM6858_SERIAL=y
+CONFIG_SYSRESET=y
+CONFIG_REGEX=y
+# CONFIG_GENERATE_SMBIOS_TABLE is not set

include/configs/broadcom_bcm968580xref.h

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include <linux/sizes.h>
+
+/*
+ * common
+ */
+
+/* UART */
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, \
+					  230400, 500000, 1500000 }
+/* Memory usage */
+#define CONFIG_SYS_MAXARGS		24
+#define CONFIG_SYS_MALLOC_LEN		(1024 * 1024)
+
+/*
+ * 6858
+ */
+
+/* RAM */
+#define CONFIG_SYS_SDRAM_BASE		0x00000000
+
+/* U-Boot */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_TEXT_BASE + SZ_16M)
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_TEXT_BASE
+
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+/*
+ * 968580xref
+ */
+
+#define CONFIG_ENV_SIZE			(8 * 1024)