mx25: Move MX25 selection to Kconfig

The motivation for moving MX25 selection to Kconfig is to be
able to better handle MX25 specific errata, so that an errata option
can be selected at SoC level instead of board level.

This selection method also aligns with the way other i.MX SoCs are
selected in U-Boot.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>

arch/arm/Kconfig

@@ -341,17 +341,6 @@ config TARGET_WORK_92105
 	select CPU_ARM926EJS
 	select SUPPORT_SPL
 
-config TARGET_MX25PDK
-	bool "Support mx25pdk"
-	select BOARD_LATE_INIT
-	select CPU_ARM926EJS
-	select BOARD_EARLY_INIT_F
-
-config TARGET_ZMX25
-	bool "Support zmx25"
-	select BOARD_LATE_INIT
-	select CPU_ARM926EJS
-
 config TARGET_APF27
 	bool "Support apf27"
 	select CPU_ARM926EJS
@@ -599,6 +588,10 @@ config ARCH_MESON
 	  targeted at media players and tablet computers. We currently
 	  support the S905 (GXBaby) 64-bit SoC.
 
+config ARCH_MX25
+	bool "NXP MX25"
+	select CPU_ARM926EJS
+
 config ARCH_MX7ULP
         bool "NXP MX7ULP"
         select CPU_V7
@@ -1162,6 +1155,8 @@ source "arch/arm/mach-mvebu/Kconfig"
 
 source "arch/arm/cpu/armv7/ls102xa/Kconfig"
 
+source "arch/arm/mach-imx/mx2/Kconfig"
+
 source "arch/arm/mach-imx/mx7ulp/Kconfig"
 
 source "arch/arm/mach-imx/mx7/Kconfig"
@@ -1244,7 +1239,6 @@ source "board/freescale/ls1012aqds/Kconfig"
 source "board/freescale/ls1012ardb/Kconfig"
 source "board/freescale/ls1012afrdm/Kconfig"
 source "board/freescale/mx23evk/Kconfig"
-source "board/freescale/mx25pdk/Kconfig"
 source "board/freescale/mx28evk/Kconfig"
 source "board/freescale/mx31ads/Kconfig"
 source "board/freescale/mx31pdk/Kconfig"
@@ -1270,7 +1264,6 @@ source "board/spear/spear320/Kconfig"
 source "board/spear/spear600/Kconfig"
 source "board/spear/x600/Kconfig"
 source "board/st/stv0991/Kconfig"
-source "board/syteco/zmx25/Kconfig"
 source "board/tcl/sl50/Kconfig"
 source "board/birdland/bav335x/Kconfig"
 source "board/timll/devkit3250/Kconfig"

arch/arm/mach-imx/mx2/Kconfig

@@ -0,0 +1,29 @@
+if ARCH_MX25
+
+config MX25
+	bool
+	default y
+choice
+	prompt "MX25 board select"
+	optional
+
+config TARGET_MX25PDK
+	bool "Support mx25pdk"
+	select BOARD_LATE_INIT
+	select CPU_ARM926EJS
+	select BOARD_EARLY_INIT_F
+
+config TARGET_ZMX25
+	bool "Support zmx25"
+	select BOARD_LATE_INIT
+	select CPU_ARM926EJS1
+
+endchoice
+
+config SYS_SOC
+	default "mx25"
+
+source "board/freescale/mx25pdk/Kconfig"
+source "board/syteco/zmx25/Kconfig"
+
+endif

configs/mx25pdk_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_ARCH_MX25=y
 CONFIG_TARGET_MX25PDK=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx25pdk/imximage.cfg"
 CONFIG_BOOTDELAY=1

configs/zmx25_defconfig

@@ -1,4 +1,5 @@
 CONFIG_ARM=y
+CONFIG_ARCH_MX25=y
 CONFIG_TARGET_ZMX25=y
 CONFIG_BOOTDELAY=5
 # CONFIG_DISPLAY_CPUINFO is not set

include/configs/mx25pdk.h

@@ -11,7 +11,6 @@
 
 /* High Level Configuration Options */
 
-#define CONFIG_MX25
 #define CONFIG_SYS_TEXT_BASE		0x81200000
 #define CONFIG_MXC_GPIO
 #define CONFIG_SYS_FSL_CLK

include/configs/zmx25.h

@@ -12,7 +12,6 @@
 
 #include <asm/arch/imx-regs.h>
 
-#define CONFIG_MX25
 #define CONFIG_SYS_TEXT_BASE		0xA0000000
 
 #define CONFIG_SYS_TIMER_RATE		32768