[09/12] board: ti: j784s4: Add board support for J784S4 SoC

diff --git a/board/ti/j784s4/Kconfig b/board/ti/j784s4/Kconfig
new file mode 100644
index 0000000000..9b6e3bb3c4
--- /dev/null
+++ b/board/ti/j784s4/Kconfig
@@ -0,0 +1,61 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+#	Hari Nagalla <hnagalla@ti.com>
+
+choice
+	prompt "K3 J784S4 board"
+	optional
+
+config TARGET_J784S4_A72_EVM
+	bool "TI K3 based J784S4 EVM running on A72"
+	select ARM64
+	select SOC_K3_J784S4
+	select BOARD_LATE_INIT
+	select SYS_DISABLE_DCACHE_OPS
+
+config TARGET_J784S4_R5_EVM
+	bool "TI K3 based J784S4 EVM running on R5"
+	select CPU_V7R
+	select SYS_THUMB_BUILD
+	select SOC_K3_J784S4
+	select K3_LOAD_SYSFW
+	select RAM
+	select SPL_RAM
+	select K3_DDRSS
+	imply SYS_K3_SPL_ATF
+
+endchoice
+
+if TARGET_J784S4_A72_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+source "board/ti/common/Kconfig"
+
+endif
+
+if TARGET_J784S4_R5_EVM
+
+config SYS_BOARD
+       default "j784s4"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "j784s4_evm"
+
+config SPL_LDSCRIPT
+	default "arch/arm/mach-omap2/u-boot-spl.lds"
+
+source "board/ti/common/Kconfig"
+
+endif
diff --git a/board/ti/j784s4/MAINTAINERS b/board/ti/j784s4/MAINTAINERS
new file mode 100644
index 0000000000..7b45e409c6
--- /dev/null
+++ b/board/ti/j784s4/MAINTAINERS
@@ -0,0 +1,7 @@ 
+J784S4 BOARD
+M:	Hari Nagalla <hnagalla@ti.com>
+S:	Maintained
+F:	board/ti/j784s4
+F:	include/configs/j784s4_evm.h
+F:	configs/j784s4_evm_r5_defconfig
+F:	configs/j784s4_evm_a72_defconfig
diff --git a/board/ti/j784s4/Makefile b/board/ti/j784s4/Makefile
new file mode 100644
index 0000000000..fc98b24a2d
--- /dev/null
+++ b/board/ti/j784s4/Makefile
@@ -0,0 +1,8 @@ 
+#
+# Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+#	Hari Nagalla <hnagalla@ti.com>
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y	+= evm.o
diff --git a/board/ti/j784s4/evm.c b/board/ti/j784s4/evm.c
new file mode 100644
index 0000000000..155abe53ca
--- /dev/null
+++ b/board/ti/j784s4/evm.c
@@ -0,0 +1,180 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Board specific initialization for J784S4 EVM
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/
+ *	Hari Nagalla <hnagalla@ti.com>
+ *
+ */
+
+#include <common.h>
+#include <env.h>
+#include <fdt_support.h>
+#include <generic-phy.h>
+#include <image.h>
+#include <init.h>
+#include <log.h>
+#include <net.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <spl.h>
+#include <asm/arch/sys_proto.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+
+#include "../common/board_detect.h"
+
+#define board_is_j784s4_evm()	board_ti_k3_is("J784S4-EVM")
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	return 0;
+}
+
+int dram_init(void)
+{
+#ifdef CONFIG_PHYS_64BIT
+	gd->ram_size = 0x100000000;
+#else
+	gd->ram_size = 0x80000000;
+#endif
+
+	return 0;
+}
+
+phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+{
+#ifdef CONFIG_PHYS_64BIT
+	/* Limit RAM used by U-Boot to the DDR low region */
+	if (gd->ram_top > 0x100000000)
+		return 0x100000000;
+#endif
+
+	return gd->ram_top;
+}
+
+int dram_init_banksize(void)
+{
+	/* Bank 0 declares the memory available in the DDR low region */
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = 0x7fffffff;
+	gd->ram_size = 0x80000000;
+
+#ifdef CONFIG_PHYS_64BIT
+	/* Bank 1 declares the memory available in the DDR high region */
+	gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
+	gd->bd->bi_dram[1].size = 0x77fffffff;
+	gd->ram_size = 0x800000000;
+#endif
+
+	return 0;
+}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+	if (!strcmp(name, "J784S4X-EVM"))
+		return 0;
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	int ret;
+
+	ret = fdt_fixup_msmc_ram(blob, "/bus@100000", "sram@70000000");
+	if (ret < 0)
+		ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000",
+					 "sram@70000000");
+	if (ret)
+		printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
+
+	return ret;
+}
+#endif
+
+#ifdef CONFIG_TI_I2C_BOARD_DETECT
+int do_board_detect(void)
+{
+	int ret;
+
+	ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
+					 CONFIG_EEPROM_CHIP_ADDRESS);
+	if (ret)
+		pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
+		       CONFIG_EEPROM_CHIP_ADDRESS, ret);
+
+	return ret;
+}
+
+int checkboard(void)
+{
+	struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
+
+	if (do_board_detect())
+		/* EEPROM not populated */
+		printf("Board: %s rev %s\n", "J784S4-EVM", "E1");
+	else
+		printf("Board: %s rev %s\n", ep->name, ep->version);
+
+	return 0;
+}
+
+static void setup_board_eeprom_env(void)
+{
+	char *name = "j784s4";
+
+	if (do_board_detect())
+		goto invalid_eeprom;
+
+	if (board_is_j784s4_evm())
+		name = "j784s4";
+	else
+		printf("Unidentified board claims %s in eeprom header\n",
+		       board_ti_get_name());
+
+invalid_eeprom:
+	set_board_info_env_am6(name);
+}
+
+static void setup_serial(void)
+{
+	struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
+	unsigned long board_serial;
+	char *endp;
+	char serial_string[17] = { 0 };
+
+	if (env_get("serial#"))
+		return;
+
+	board_serial = simple_strtoul(ep->serial, &endp, 16);
+	if (*endp != '\0') {
+		pr_err("Error: Can't set serial# to %s\n", ep->serial);
+		return;
+	}
+
+	snprintf(serial_string, sizeof(serial_string), "%016lx", board_serial);
+	env_set("serial#", serial_string);
+}
+#endif
+
+int board_late_init(void)
+{
+	if (IS_ENABLED(CONFIG_TI_I2C_BOARD_DETECT)) {
+		setup_board_eeprom_env();
+		setup_serial();
+	}
+
+	return 0;
+}
+
+void spl_board_init(void)
+{
+}