[U-Boot] [PATCH 1/6] board: ti: am654: a53: Add initial support for am654

[Lokesh Vutla <lokeshvutla@ti.com>]

Add initial support for AM654 based EVM running on A53. Enable
4GB of DDR available on the EVM so that kernel DTB file
can be updated accordingly.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[Andreas: Added 4GB ddr support]
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
---
 arch/arm/mach-k3/Kconfig    |  1 +
 board/ti/am65x/Kconfig      | 30 ++++++++++++++++++++
 board/ti/am65x/MAINTAINERS  |  5 ++++
 board/ti/am65x/Makefile     |  8 ++++++
 board/ti/am65x/evm.c        | 56 +++++++++++++++++++++++++++++++++++++
 include/configs/am65x_evm.h | 36 ++++++++++++++++++++++++
 6 files changed, 136 insertions(+)
 create mode 100644 board/ti/am65x/Kconfig
 create mode 100644 board/ti/am65x/MAINTAINERS
 create mode 100644 board/ti/am65x/Makefile
 create mode 100644 board/ti/am65x/evm.c
 create mode 100644 include/configs/am65x_evm.h

diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig
index 117e5b4e4a..df3ba32df6 100644
--- a/arch/arm/mach-k3/Kconfig
+++ b/arch/arm/mach-k3/Kconfig
@@ -47,4 +47,5 @@ config BOOT_PARAM_TABLE_INDEX
 	  Address at which ROM stores the value which determines if SPL
 	  is booted up by primary boot media or secondary boot media.
 
+source "board/ti/am65x/Kconfig"
 endif
diff --git a/board/ti/am65x/Kconfig b/board/ti/am65x/Kconfig
new file mode 100644
index 0000000000..fb616e8fd5
--- /dev/null
+++ b/board/ti/am65x/Kconfig
@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+#	Lokesh Vutla <lokeshvutla@ti.com>
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+choice
+	prompt "K3 AM65 based boards"
+	optional
+
+config TARGET_AM654_A53_EVM
+	bool "TI K3 based AM654 EVM running on A53"
+	select ARM64
+	select SOC_K3_AM6
+
+endchoice
+
+if TARGET_AM654_A53_EVM
+
+config SYS_BOARD
+       default "am65x"
+
+config SYS_VENDOR
+       default "ti"
+
+config SYS_CONFIG_NAME
+       default "am65x_evm"
+
+endif
diff --git a/board/ti/am65x/MAINTAINERS b/board/ti/am65x/MAINTAINERS
new file mode 100644
index 0000000000..c5921b4a28
--- /dev/null
+++ b/board/ti/am65x/MAINTAINERS
@@ -0,0 +1,5 @@
+AM65x BOARD
+M:	Lokesh Vutla <lokeshvutla@ti.com>
+S:	Maintained
+F:	board/ti/am65x/
+F:	include/configs/am65x_evm.h
diff --git a/board/ti/am65x/Makefile b/board/ti/am65x/Makefile
new file mode 100644
index 0000000000..94dddfcc4a
--- /dev/null
+++ b/board/ti/am65x/Makefile
@@ -0,0 +1,8 @@
+#
+# Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+#	Lokesh Vutla <lokeshvutla@ti.com>
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y  := evm.o
diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c
new file mode 100644
index 0000000000..db2c90e948
--- /dev/null
+++ b/board/ti/am65x/evm.c
@@ -0,0 +1,56 @@
+/*
+ * Board specific initialization for AM654 EVM
+ *
+ * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+ *	Lokesh Vutla <lokeshvutla@ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <spl.h>
+
+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;
+}
+
+ulong board_get_usable_ram_top(ulong 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 = 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 = 0x80000000;
+#endif
+
+	return 0;
+}
diff --git a/include/configs/am65x_evm.h b/include/configs/am65x_evm.h
new file mode 100644
index 0000000000..ee8a984cfc
--- /dev/null
+++ b/include/configs/am65x_evm.h
@@ -0,0 +1,36 @@
+/*
+ * Configuration header file for K3 AM654 EVM
+ *
+ * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+ *	Lokesh Vutla <lokeshvutla@ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef __CONFIG_AM654_EVM_H
+#define __CONFIG_AM654_EVM_H
+
+#include <linux/sizes.h>
+#include <config_distro_bootcmd.h>
+
+#define CONFIG_ENV_SIZE			(128 << 10)
+
+/* DDR Configuration */
+#define CONFIG_NR_DRAM_BANKS		2
+#define CONFIG_SYS_SDRAM_BASE1		0x880000000
+
+/* SPL Loader Configuration */
+#ifdef CONFIG_TARGET_AM654_A53_EVM
+#define CONFIG_SPL_TEXT_BASE		0x80080000
+#endif
+
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+#define CONFIG_SPL_MAX_SIZE		CONFIG_MAX_DOWNLODABLE_IMAGE_SIZE
+#define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SPL_TEXT_BASE +	\
+					CONFIG_NON_SECURE_MSRAM_SIZE - 4)
+
+/* Now for the remaining common defines */
+#include <configs/ti_armv7_common.h>
+
+#endif /* __CONFIG_AM654_EVM_H */
-- 
2.18.0