arm: Move MAX_CPUS to Kconfig

Move MAX_CPUS option to Kconfig and clean up existing uses for ARM. This
option is used by Freescale Layerscape SoCs.

Signed-off-by: York Sun <york.sun@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/arm/cpu/armv7/ls102xa/Kconfig

@@ -9,6 +9,17 @@ config LS1_DEEP_SLEEP
 	bool "Deep sleep"
 	depends on ARCH_LS1021A
 
+config MAX_CPUS
+	int "Maximum number of CPUs permitted for LS102xA"
+	depends on ARCH_LS1021A
+	default 2
+	help
+	  Set this number to the maximum number of possible CPUs in the SoC.
+	  SoCs may have multiple clusters with each cluster may have multiple
+	  ports. If some ports are reserved but higher ports are used for
+	  cores, count the reserved ports. This will allocate enough memory
+	  in spin table to properly handle all cores.
+
 config SYS_FSL_ERRATUM_A010315
 	bool "Workaround for PCIe erratum A010315"
 

arch/arm/cpu/armv8/fsl-layerscape/Kconfig

@@ -37,4 +37,17 @@ config SYS_FSL_ERRATUM_A010315
 config SYS_FSL_ERRATUM_A010539
 	bool "Workaround for PIN MUX erratum A010539"
 
+config MAX_CPUS
+	int "Maximum number of CPUs permitted for Layerscape"
+	default 4 if ARCH_LS1043A
+	default 4 if ARCH_LS1046A
+	default 16 if ARCH_LS2080A
+	default 1
+	help
+	  Set this number to the maximum number of possible CPUs in the SoC.
+	  SoCs may have multiple clusters with each cluster may have multiple
+	  ports. If some ports are reserved but higher ports are used for
+	  cores, count the reserved ports. This will allocate enough memory
+	  in spin table to properly handle all cores.
+
 endmenu

arch/arm/include/asm/arch-fsl-layerscape/config.h

@@ -30,7 +30,6 @@
 #define CONFIG_SYS_MEM_RESERVE_SECURE	(2048 * 1024)	/* 2MB */
 
 #ifdef CONFIG_LS2080A
-#define CONFIG_MAX_CPUS				16
 #define CONFIG_SYS_FSL_IFC_BANK_COUNT		8
 #define CONFIG_NUM_DDR_CONTROLLERS		3
 #define CONFIG_SYS_FSL_HAS_DP_DDR		/* Runtime check to confirm */
@@ -171,7 +170,6 @@
 
 /* SoC related */
 #ifdef CONFIG_LS1043A
-#define CONFIG_MAX_CPUS				4
 #define CONFIG_SYS_FMAN_V3
 #define CONFIG_SYS_NUM_FMAN			1
 #define CONFIG_SYS_NUM_FM1_DTSEC		7
@@ -206,13 +204,11 @@
 #define CONFIG_SYS_FSL_ERRATUM_A009660
 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC		1
 #elif defined(CONFIG_ARCH_LS1012A)
-#define CONFIG_MAX_CPUS                         1
 #undef	CONFIG_SYS_FSL_DDRC_ARM_GEN3
 
 #define GICD_BASE		0x01401000
 #define GICC_BASE		0x01402000
 #elif defined(CONFIG_ARCH_LS1046A)
-#define CONFIG_MAX_CPUS				4
 #define CONFIG_SYS_FMAN_V3
 #define CONFIG_SYS_NUM_FMAN			1
 #define CONFIG_SYS_NUM_FM1_DTSEC		8

arch/arm/include/asm/arch-ls102xa/config.h

@@ -123,7 +123,6 @@
 #define CONFIG_SYS_FSL_SRDS_1
 
 #ifdef CONFIG_LS102XA
-#define CONFIG_MAX_CPUS				2
 #define CONFIG_SYS_FSL_IFC_BANK_COUNT		8
 #define CONFIG_NUM_DDR_CONTROLLERS		1
 #define CONFIG_SYS_FSL_DDR_VER			FSL_DDR_VER_5_0