x86: select CONFIG_64BIT for X86_64

Select CONFIG_64BIT so that we pass the -m64 option (instead of -m32) to
static analysis tools.
Introduce CONFIG_SPL_64BIT and select it for architectures other than
x86 with 64 bit builds. Do not select it for x86 builds as x86 uses
a 32 bit SPL.
Ensure that when limits are set they use CONFIG_64BIT for U-Boot
proper and CONFIG_SPL_64BIT for SPL. This is to allow for the 32 bit
SPL build used by x86.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
(cherry picked from commit 99145eec2d)

arch/Kconfig

@@ -37,6 +37,14 @@ config 32BIT
 
 config 64BIT
 	bool
+	help
+	  Indicates that U-Boot proper will be built for a 64 bit
+	  architecture.
+
+config SPL_64BIT
+	bool
+	help
+	  Indicates that SPL will be built for a 64 bit architecture.
 
 config SYS_CACHELINE_SIZE
 	int

arch/arm/Kconfig

@@ -7,6 +7,7 @@ config SYS_ARCH
 config ARM64
 	bool
 	select 64BIT
+	select SPL_64BIT if SPL
 	select PHYS_64BIT
 	select SYS_CACHE_SHIFT_6
 	imply SPL_SEPARATE_BSS

arch/mips/Kconfig

@@ -211,6 +211,7 @@ config CPU_MIPS64_R1
 	bool "MIPS64 Release 1"
 	depends on SUPPORTS_CPU_MIPS64_R1
 	select 64BIT
+	select SPL_64BIT if SPL
 	help
 	  Choose this option to build a kernel for release 1 through 5 of the
 	  MIPS64 architecture.
@@ -219,6 +220,7 @@ config CPU_MIPS64_R2
 	bool "MIPS64 Release 2"
 	depends on SUPPORTS_CPU_MIPS64_R2
 	select 64BIT
+	select SPL_64BIT if SPL
 	help
 	  Choose this option to build a kernel for release 2 through 5 of the
 	  MIPS64 architecture.
@@ -227,6 +229,7 @@ config CPU_MIPS64_R6
 	bool "MIPS64 Release 6"
 	depends on SUPPORTS_CPU_MIPS64_R6
 	select 64BIT
+	select SPL_64BIT if SPL
 	help
 	  Choose this option to build a kernel for release 6 or later of the
 	  MIPS64 architecture.
@@ -235,6 +238,7 @@ config CPU_MIPS64_OCTEON
 	bool "Marvell Octeon series of CPUs"
 	depends on SUPPORTS_CPU_MIPS64_OCTEON
 	select 64BIT
+	select SPL_64BIT if SPL
 	help
 	 Choose this option for Marvell Octeon CPUs.  These CPUs are between
 	 MIPS64 R5 and R6 with other extensions.

arch/riscv/Kconfig

@@ -129,6 +129,7 @@ config ARCH_RV32I
 config ARCH_RV64I
 	bool "RV64I"
 	select 64BIT
+	select SPL_64BIT if SPL
 	select PHYS_64BIT
 	help
 	  Choose this option to target the RV64I base integer instruction set.

arch/sandbox/Kconfig

@@ -47,6 +47,7 @@ config HOST_32BIT
 config HOST_64BIT
 	def_bool $(cc-define,_LP64)
 	select 64BIT
+	select SPL_64BIT if SPL
 
 config HOST_HAS_SDL
 	def_bool $(success,sdl2-config --version)

arch/x86/Kconfig

@@ -52,6 +52,7 @@ endchoice
 
 config X86_64
 	bool
+	select 64BIT
 
 config SPL_X86_64
 	bool

include/limits.h

@@ -9,7 +9,8 @@
 #define UINT32_MAX  0xffffffffU
 #define UINT64_MAX  0xffffffffffffffffULL
 
-#ifdef CONFIG_64BIT
+#if (defined(CONFIG_64BIT) && !defined(CONFIG_SPL_BUILD)) || \
+	(defined(CONFIG_SPL_64BIT) && defined(CONFIG_SPL_BUILD))
     #define UINTPTR_MAX UINT64_MAX
 #else
     #define UINTPTR_MAX UINT32_MAX