[MIPS] Remove CONFIG_BUILD_ELF64.

    
This option is no longer usable with supported compilers.  It will be
replaced by usage of -msym32 in a separate patch.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Makefile

@@ -70,18 +70,20 @@ CHECKFLAGS-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -D__MIPSEL__
 
 CHECKFLAGS				= $(CHECKFLAGS-y)
 
-ifdef CONFIG_BUILD_ELF64
-gas-abi			= 64
-ld-emul			= $(64bit-emul)
-vmlinux-32		= vmlinux.32
-vmlinux-64		= vmlinux
-else
+ifdef CONFIG_32BIT
 gas-abi			= 32
 ld-emul			= $(32bit-emul)
 vmlinux-32		= vmlinux
 vmlinux-64		= vmlinux.64
+endif
 
-cflags-$(CONFIG_64BIT)	+= $(call cc-option,-mno-explicit-relocs)
+ifdef CONFIG_64BIT
+gas-abi			= 64
+ld-emul			= $(64bit-emul)
+vmlinux-32		= vmlinux.32
+vmlinux-64		= vmlinux
+
+cflags-y		+= $(call cc-option,-mno-explicit-relocs)
 endif
 
 #
@@ -630,7 +632,6 @@ endif
 ifdef CONFIG_SGI_IP27
 core-$(CONFIG_SGI_IP27)		+= arch/mips/sgi-ip27/
 cflags-$(CONFIG_SGI_IP27)	+= -Iinclude/asm-mips/mach-ip27
-ifdef CONFIG_BUILD_ELF64
 ifdef CONFIG_MAPPED_KERNEL
 load-$(CONFIG_SGI_IP27)		+= 0xc00000004001c000
 OBJCOPYFLAGS			:= --change-addresses=0x3fffffff80000000
@@ -639,16 +640,6 @@ else
 load-$(CONFIG_SGI_IP27)		+= 0xa80000000001c000
 OBJCOPYFLAGS			:= --change-addresses=0x57ffffff80000000
 endif
-else
-ifdef CONFIG_MAPPED_KERNEL
-load-$(CONFIG_SGI_IP27)		+= 0xffffffffc001c000
-OBJCOPYFLAGS			:= --change-addresses=0xc000000080000000
-dataoffset-$(CONFIG_SGI_IP27)	+= 0x01000000
-else
-load-$(CONFIG_SGI_IP27)		+= 0xffffffff8001c000
-OBJCOPYFLAGS			:= --change-addresses=0xa800000080000000
-endif
-endif
 endif
 
 #

arch/mips/configs/bigsur_defconfig

@@ -247,7 +247,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-CONFIG_BUILD_ELF64=y
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/configs/ip27_defconfig

@@ -234,7 +234,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-CONFIG_BUILD_ELF64=y
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/configs/ip32_defconfig

@@ -224,7 +224,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 CONFIG_BINFMT_MISC=y
-# CONFIG_BUILD_ELF64 is not set
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/configs/ocelot_c_defconfig

@@ -220,7 +220,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-# CONFIG_BUILD_ELF64 is not set
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/configs/ocelot_g_defconfig

@@ -223,7 +223,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-# CONFIG_BUILD_ELF64 is not set
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/configs/sb1250-swarm_defconfig

@@ -247,7 +247,6 @@ CONFIG_MMU=y
 #
 CONFIG_BINFMT_ELF=y
 # CONFIG_BINFMT_MISC is not set
-# CONFIG_BUILD_ELF64 is not set
 CONFIG_MIPS32_COMPAT=y
 CONFIG_COMPAT=y
 CONFIG_MIPS32_O32=y

arch/mips/kernel/setup.c

@@ -447,21 +447,10 @@ static inline void resource_init(void)
 {
 	int i;
 
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-	/*
-	 * The 64bit code in 32bit object format trick can't represent
-	 * 64bit wide relocations for linker script symbols.
-	 */
-	code_resource.start = CPHYSADDR(&_text);
-	code_resource.end = CPHYSADDR(&_etext) - 1;
-	data_resource.start = CPHYSADDR(&_etext);
-	data_resource.end = CPHYSADDR(&_edata) - 1;
-#else
 	code_resource.start = virt_to_phys(&_text);
 	code_resource.end = virt_to_phys(&_etext) - 1;
 	data_resource.start = virt_to_phys(&_etext);
 	data_resource.end = virt_to_phys(&_edata) - 1;
-#endif
 
 	/*
 	 * Request address space for all standard RAM.

arch/mips/mm/tlbex.c

@@ -951,7 +951,6 @@ build_get_pmde64(u32 **p, struct label **l, struct reloc **r,
 	/* No i_nop needed here, since the next insn doesn't touch TMP. */
 
 #ifdef CONFIG_SMP
-# ifdef CONFIG_BUILD_ELF64
 	/*
 	 * 64 bit SMP running in XKPHYS has smp_processor_id() << 3
 	 * stored in CONTEXT.
@@ -962,18 +961,6 @@ build_get_pmde64(u32 **p, struct label **l, struct reloc **r,
 	i_daddu(p, ptr, ptr, tmp);
 	i_dmfc0(p, tmp, C0_BADVADDR);
 	i_ld(p, ptr, rel_lo(pgdc), ptr);
-# else
-	/*
-	 * 64 bit SMP running in compat space has the lower part of
-	 * &pgd_current[smp_processor_id()] stored in CONTEXT.
-	 */
-	if (!in_compat_space_p(pgdc))
-		panic("Invalid page directory address!");
-
-	i_dmfc0(p, ptr, C0_CONTEXT);
-	i_dsra(p, ptr, ptr, 23);
-	i_ld(p, ptr, 0, ptr);
-# endif
 #else
 	i_LA_mostly(p, ptr, pgdc);
 	i_ld(p, ptr, rel_lo(pgdc), ptr);

include/asm-mips/mmu_context.h

@@ -33,12 +33,7 @@ extern unsigned long pgd_current[];
 	write_c0_context((unsigned long) smp_processor_id() << 25);	\
 	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
 #endif
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-#define TLBMISS_HANDLER_SETUP()						\
-	write_c0_context((unsigned long) &pgd_current[smp_processor_id()] << 23); \
-	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
-#endif
-#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64)
+#ifdef CONFIG_64BIT
 #define TLBMISS_HANDLER_SETUP()						\
 	write_c0_context((unsigned long) smp_processor_id() << 26);	\
 	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)

include/asm-mips/sn/mapped_kernel.h

@@ -23,11 +23,7 @@
 #include <linux/config.h>
 #include <asm/addrspace.h>
 
-#ifdef CONFIG_BUILD_ELF64
 #define REP_BASE	CAC_BASE
-#else
-#define REP_BASE	CKSEG0
-#endif
 
 #ifdef CONFIG_MAPPED_KERNEL
 

include/asm-mips/stackframe.h

@@ -63,17 +63,7 @@
 		addu	k1, k0
 		LONG_L	k1, %lo(kernelsp)(k1)
 #endif
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-		MFC0	k1, CP0_CONTEXT
-		dsra	k1, 23
-		lui	k0, %hi(pgd_current)
-		addiu	k0, %lo(pgd_current)
-		dsubu	k1, k0
-		lui	k0, %hi(kernelsp)
-		daddu	k1, k0
-		LONG_L	k1, %lo(kernelsp)(k1)
-#endif
-#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64)
+#ifdef CONFIG_64BIT
 		MFC0	k1, CP0_CONTEXT
 		lui	k0, %highest(kernelsp)
 		dsrl	k1, 23
@@ -91,11 +81,7 @@
 		mfc0	\temp, CP0_CONTEXT
 		srl	\temp, 23
 #endif
-#if defined(CONFIG_64BIT) && !defined(CONFIG_BUILD_ELF64)
-		lw	\temp, TI_CPU(gp)
-		dsll	\temp, 3
-#endif
-#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64)
+#ifdef CONFIG_64BIT
 		MFC0	\temp, CP0_CONTEXT
 		dsrl	\temp, 23
 #endif
@@ -103,7 +89,7 @@
 		.endm
 #else
 		.macro	get_saved_sp	/* Uniprocessor variation */
-#if defined(CONFIG_64BIT) && defined(CONFIG_BUILD_ELF64)
+#ifdef CONFIG_64BIT
 		lui	k1, %highest(kernelsp)
 		daddiu	k1, %higher(kernelsp)
 		dsll	k1, k1, 16