Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Update defconfigs.
  [MIPS] Separate CPU entries in /proc/cpuinfo with a blank line.
  [MIPS] sys_mmap2 offset argument should always be shifted 12, not PAGE_SHIFT.
  [MIPS] TX49XX has prefetch.
  [MIPS] Kill tlb-andes.c.
  [MIPS] War on whitespace: cleanup initial spaces followed by tabs.
  [MIPS] Makefile crapectomy.
  [MIPS] Reformat __xchg().
  [MIPS] Mention Broadcom part number for BigSur board
  [MIPS] Remove CONFIG_BUILD_ELF64.
  [MIPS] Further sparsification for 32-bit compat code.
  [MIPS] fix wrong __user usage in _sysn32_rt_sigsuspend
  [MIPS] Signal cleanup
  [MIPS] Reformat all of signal32.c with tabs instead of space for consistency
  [MIPS] Delete unused sys32_waitpid.
  [MIPS] Make I/O helpers more customizable
  [MIPS] Symmetric Uniprocessor support for Qemu.
  [MIPS] sc-rm7k.c cleanup
  [MIPS] MIPS64 R2 optimizations for 64-bit endianess swapping.
  [MIPS] Add early console for Cobalt.

119 files changed, 2044 insertions, 2642 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3a0f89d2c8d..ac2012f033d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -602,7 +602,7 @@ config SGI_IP32
 	  If you want this kernel to run on SGI O2 workstation, say Y here.
 
 config SIBYTE_BIGSUR
-	bool "Support for Sibyte BigSur"
+	bool "Support for Sibyte BCM91480B-BigSur"
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select PCI_DOMAINS
@@ -790,6 +790,7 @@ source "arch/mips/tx4927/Kconfig"
 source "arch/mips/tx4938/Kconfig"
 source "arch/mips/vr41xx/Kconfig"
 source "arch/mips/philips/pnx8550/common/Kconfig"
+source "arch/mips/cobalt/Kconfig"
 
 endmenu
 
@@ -1159,6 +1160,7 @@ config CPU_R4X00
 config CPU_TX49XX
 	bool "R49XX"
 	depends on SYS_HAS_CPU_TX49XX
+	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 
@@ -1581,7 +1583,7 @@ source "mm/Kconfig"
 
 config SMP
 	bool "Multi-Processing support"
-	depends on CPU_RM9000 || ((SIBYTE_BCM1x80 || SIBYTE_BCM1x55 || SIBYTE_SB1250) && !SIBYTE_STANDALONE) || SGI_IP27 || MIPS_MT_SMP
+	depends on CPU_RM9000 || ((SIBYTE_BCM1x80 || SIBYTE_BCM1x55 || SIBYTE_SB1250 || QEMU) && !SIBYTE_STANDALONE) || SGI_IP27 || MIPS_MT_SMP
 	---help---
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, like most personal computers, say N. If
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 3d8dac681c6..9a69e0f0ab7 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -12,10 +12,6 @@
 # for "archclean" cleaning up for this architecture.
 #
 
-as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
-	     -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
-	     else echo "$(2)"; fi ;)
-
 cflags-y :=
 
 #
@@ -38,12 +34,10 @@ else
 endif
 
 ifdef CONFIG_32BIT
-gcc-abi			= 32
 tool-prefix		= $(32bit-tool-prefix)
 UTS_MACHINE		:= mips
 endif
 ifdef CONFIG_64BIT
-gcc-abi			= 64
 tool-prefix		= $(64bit-tool-prefix)
 UTS_MACHINE		:= mips64
 endif
@@ -52,37 +46,27 @@ ifdef CONFIG_CROSSCOMPILE
 CROSS_COMPILE		:= $(tool-prefix)
 endif
 
-CHECKFLAGS-y				+= -D__linux__ -D__mips__ \
-					   -D_MIPS_SZINT=32 \
-					   -D_ABIO32=1 \
-					   -D_ABIN32=2 \
-					   -D_ABI64=3
-CHECKFLAGS-$(CONFIG_32BIT)		+= -D_MIPS_SIM=_ABIO32 \
-					   -D_MIPS_SZLONG=32 \
-					   -D_MIPS_SZPTR=32 \
-					   -D__PTRDIFF_TYPE__=int
-CHECKFLAGS-$(CONFIG_64BIT)		+= -m64 -D_MIPS_SIM=_ABI64 \
-					   -D_MIPS_SZLONG=64 \
-					   -D_MIPS_SZPTR=64 \
-					   -D__PTRDIFF_TYPE__="long int"
-CHECKFLAGS-$(CONFIG_CPU_BIG_ENDIAN)	+= -D__MIPSEB__
-CHECKFLAGS-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -D__MIPSEL__
-
-CHECKFLAGS				= $(CHECKFLAGS-y)
+ifdef CONFIG_32BIT
+ld-emul			= $(32bit-emul)
+vmlinux-32		= vmlinux
+vmlinux-64		= vmlinux.64
+
+cflags-y		+= -mabi=32
+endif
 
-ifdef CONFIG_BUILD_ELF64
-gas-abi			= 64
+ifdef CONFIG_64BIT
 ld-emul			= $(64bit-emul)
 vmlinux-32		= vmlinux.32
 vmlinux-64		= vmlinux
-else
-gas-abi			= 32
-ld-emul			= $(32bit-emul)
-vmlinux-32		= vmlinux
-vmlinux-64		= vmlinux.64
 
-cflags-$(CONFIG_64BIT)	+= $(call cc-option,-mno-explicit-relocs)
+cflags-y		+= -mabi=64
+ifdef CONFIG_BUILD_ELF64
+cflags-y		+= $(call cc-option,-mno-explicit-relocs)
+else
+cflags-y		+= $(call cc-option,-msym32)
 endif
+endif
+
 
 #
 # GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
@@ -105,162 +89,44 @@ MODFLAGS			+= -mlong-calls
 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
 # when fed the toolchain default!
 #
-cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB)
-cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL)
+cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB -D__MIPSEB__)
+cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL -D__MIPSEL__)
 
 cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
 				   -fno-omit-frame-pointer