arm: Kconfig: Add support for AM43xx SoC specific Kconfig

Adding support for AM43xx secure devices require the addition
of some SOC specific config options like the amount of memory
used by public ROM and the address of the entry point of u-boot
or SPL, as seen by the ROM code, for the image to be built
correctly.

This mandates the addition of am AM43xx CONFIG option and the
ARM Kconfig file has been modified to source this SOC Kconfig
file. Moving the TARGET_AM43XX_EVM config option to the SOC
KConfig and out of the arch/arm/Kconfig.

Updating defconfigs to add the CONFIG_AM43XX=y statement and
removing the #define CONFIG_AM43XX from the header file.

Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Daniel Allred <d-allred@ti.com>

Tested-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/Kconfig

@@ -381,12 +381,6 @@ config TARGET_AM335X_SL50
 	select DM
 	select DM_SERIAL
 
-config TARGET_AM43XX_EVM
-	bool "Support am43xx_evm"
-	select CPU_V7
-	select SUPPORT_SPL
-	select TI_I2C_BOARD_DETECT
-
 config TARGET_BAV335X
 	bool "Support bav335x"
 	select CPU_V7
@@ -514,6 +508,17 @@ config OMAP54XX
 	select CPU_V7
 	select SUPPORT_SPL
 
+config AM43XX
+	bool "AM43XX SoC"
+	select CPU_V7
+	select SUPPORT_SPL
+	help
+	  Support for AM43xx SOC from Texas Instruments.
+	  The AM43xx high performance SOC features a Cortex-A9
+	  ARM core, a quad core PRU-ICSS for industrial Ethernet
+	  protocols, dual camera support, optional 3D graphics
+	  and an optional customer programmable secure boot.
+
 config RMOBILE
 	bool "Renesas ARM SoCs"
 	select CPU_V7
@@ -795,6 +800,8 @@ source "arch/arm/cpu/armv7/omap4/Kconfig"
 
 source "arch/arm/cpu/armv7/omap5/Kconfig"
 
+source "arch/arm/cpu/armv7/am33xx/Kconfig"
+
 source "arch/arm/mach-orion5x/Kconfig"
 
 source "arch/arm/cpu/armv7/rmobile/Kconfig"

arch/arm/cpu/armv7/am33xx/Kconfig

@@ -1,3 +1,15 @@
+if AM43XX
+config TARGET_AM43XX_EVM
+	bool "Support am43xx_evm"
+	select TI_I2C_BOARD_DETECT
+	help
+	  This option specifies support for the AM43xx
+	  GP and HS EVM development platforms.The AM437x
+	  GP EVM is a standalone test, development, and
+	  evaluation module system that enables developers
+	  to write software and develop hardware around
+	  an AM43xx processor subsystem.
+
 config ISW_ENTRY_ADDR
 	hex "Address in memory or XIP flash of bootloader entry point"
 	help
@@ -25,3 +37,4 @@ config PUB_ROM_DATA_SIZE
 	  image, this area is no longer used, and can be reclaimed
 	  for run time use by the boot image.
 	default 0x8400
+endif

configs/am437x_gp_evm_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_DM_SERIAL=y
 CONFIG_DM_GPIO=y

configs/am437x_sk_evm_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_DM_SERIAL=y
 CONFIG_DM_SPI=y

configs/am43xx_evm_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND"

configs/am43xx_evm_ethboot_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND,SPL_ETH_SUPPORT"

configs/am43xx_evm_qspiboot_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,QSPI,QSPI_BOOT"
 CONFIG_HUSH_PARSER=y

configs/am43xx_evm_usbhost_boot_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_AM43XX=y
 CONFIG_TARGET_AM43XX_EVM=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND,SPL_USB_HOST_SUPPORT"

include/configs/am43xx_evm.h

@@ -9,8 +9,6 @@
 #ifndef __CONFIG_AM43XX_EVM_H
 #define __CONFIG_AM43XX_EVM_H
 
-#define CONFIG_AM43XX
-
 #define CONFIG_BOARD_LATE_INIT
 #define CONFIG_ARCH_CPU_INIT
 #define CONFIG_SYS_CACHELINE_SIZE       32