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Commit e031d33e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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.
parents 52aef818 48e08101

arch/mips/Kconfig

+4 −2
Original line number Diff line number Diff line
@@ -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

arch/mips/Makefile

+46 −185
Original line number Diff line number Diff line
@@ -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



#

# Use: $(call set_gccflags,<cpu0>,<isa0>,<cpu1>,<isa1>,<isa2>)

#

# <cpu0>,<isa0> -- preferred CPU and ISA designations (may require

#                  recent tools)

# <cpu1>,<isa1> -- fallback CPU and ISA designations (have to work

#                  with up to the oldest supported tools)

# <isa2>        -- an ISA designation used as an ABI selector for

#                  gcc versions that do not support "-mabi=32"

#                  (depending on the CPU type, either "mips1" or

#                  "mips2")

#

set_gccflags = $(shell \

while :; do \

	cpu=$(1); isa=-$(2); \

	for gcc_opt in -march= -mcpu=; do \

		$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \

			-xc /dev/null > /dev/null 2>&1 && \

			break 2; \

	done; \

	cpu=$(3); isa=-$(4); \

	for gcc_opt in -march= -mcpu=; do \

		$(CC) $$gcc_opt$$cpu $$isa -S -o /dev/null \

			-xc /dev/null > /dev/null 2>&1 && \

			break 2; \

	done; \

	break; \

done; \

gcc_abi=-mabi=$(gcc-abi); gcc_cpu=$$cpu; \

if $(CC) $$gcc_abi -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then \

	gcc_isa=$$isa; \

else \

	gcc_abi=; gcc_isa=-$(5); \

fi; \

gas_abi=-Wa,-$(gcc-abi); gas_cpu=$$cpu; gas_isa=-Wa,$$isa; \

while :; do \

	for gas_opt in -Wa,-march= -Wa,-mcpu=; do \

		$(CC) $$gas_abi $$gas_opt$$cpu $$gas_isa -Wa,-Z -c \

			-o /dev/null -xassembler /dev/null > /dev/null 2>&1 && \

			break 2; \

	done; \

	gas_abi=; gas_opt=; gas_cpu=; gas_isa=; \

	break; \

done; \

if test "$(gcc-abi)" != "$(gas-abi)"; then \

	gas_abi="-Wa,-$(gas-abi) -Wa,-mgp$(gcc-abi)"; \

fi; \

if test "$$gcc_opt" = -march= && test -n "$$gcc_abi"; then \

	$(CC) $$gcc_abi $$gcc_opt$$gcc_cpu -S -o /dev/null \

		-xc /dev/null > /dev/null 2>&1 && \

		gcc_isa=; \

fi; \

echo $$gcc_abi $$gcc_opt$$gcc_cpu $$gcc_isa $$gas_abi $$gas_opt$$gas_cpu $$gas_isa)



#

# CPU-dependent compiler/assembler options for optimization.

#

cflags-$(CONFIG_CPU_R3000)	+= \

			$(call set_gccflags,r3000,mips1,r3000,mips1,mips1)

CHECKFLAGS-$(CONFIG_CPU_R3000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS1



cflags-$(CONFIG_CPU_TX39XX)	+= \

			$(call set_gccflags,r3900,mips1,r3000,mips1,mips1)

CHECKFLAGS-$(CONFIG_CPU_TX39XX)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS1



cflags-$(CONFIG_CPU_R6000)	+= \

			$(call set_gccflags,r6000,mips2,r6000,mips2,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R6000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS2



cflags-$(CONFIG_CPU_R4300)	+= \

			$(call set_gccflags,r4300,mips3,r4300,mips3,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R4300)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS3



cflags-$(CONFIG_CPU_VR41XX)	+= \

			$(call set_gccflags,r4100,mips3,r4600,mips3,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_VR41XX)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS3



cflags-$(CONFIG_CPU_R4X00)	+= \

			$(call set_gccflags,r4600,mips3,r4600,mips3,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R4X00)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS3



cflags-$(CONFIG_CPU_TX49XX)	+= \

			$(call set_gccflags,r4600,mips3,r4600,mips3,mips2)  \

cflags-$(CONFIG_CPU_R3000)	+= -march=r3000

cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900

cflags-$(CONFIG_CPU_R6000)	+= -march=r6000 -Wa,--trap

cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap

cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap

cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap

cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap

cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips2 -mtune=r4600) \

			-Wa,-mips32 -Wa,--trap

cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips2 -mtune=r4600) \

			-Wa,-mips32r2 -Wa,--trap

cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips2 -mtune=r4600) \

			-Wa,-mips64 -Wa,--trap

cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips2 -mtune=r4600 ) \

			-Wa,-mips64r2 -Wa,--trap

cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap

cflags-$(CONFIG_CPU_R5432)	+= $(call cc-options,-march=r5400,-march=r5000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_TX49XX)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS3



cflags-$(CONFIG_CPU_MIPS32_R1)	+= \

			$(call set_gccflags,mips32,mips32,r4600,mips3,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_MIPS32_R1)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS32



cflags-$(CONFIG_CPU_MIPS32_R2)	+= \

			$(call set_gccflags,mips32r2,mips32r2,r4600,mips3,mips2) \

cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-options,-march=rm5200,-march=r5000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_MIPS32_R2)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS32



cflags-$(CONFIG_CPU_MIPS64_R1)	+= \

			$(call set_gccflags,mips64,mips64,r4600,mips3,mips2) \

cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_MIPS64_R1)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS64



cflags-$(CONFIG_CPU_MIPS64_R2)	+= \

			$(call set_gccflags,mips64r2,mips64r2,r4600,mips3,mips2) \

cflags-$(CONFIG_CPU_RM9000)	+= $(call cc-option,-march=rm9000,-march=r5000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_MIPS64_R2)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS64



cflags-$(CONFIG_CPU_R5000)	+= \

			$(call set_gccflags,r5000,mips4,r5000,mips4,mips2) \

cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R5000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



cflags-$(CONFIG_CPU_R5432)	+= \

			$(call set_gccflags,r5400,mips4,r5000,mips4,mips2) \

cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap

cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R5432)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



cflags-$(CONFIG_CPU_NEVADA)	+= \

			$(call set_gccflags,rm5200,mips4,r5000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_NEVADA)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



cflags-$(CONFIG_CPU_RM7000)	+= \

			$(call set_gccflags,rm7000,mips4,r5000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_RM7000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



cflags-$(CONFIG_CPU_RM9000)	+= \

			$(call set_gccflags,rm9000,mips4,r5000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_RM9000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4





cflags-$(CONFIG_CPU_SB1)	+= \

			$(call set_gccflags,sb1,mips64,r5000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_SB1)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS64



cflags-$(CONFIG_CPU_R8000)	+= \

			$(call set_gccflags,r8000,mips4,r8000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R8000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



cflags-$(CONFIG_CPU_R10000)	+= \

			$(call set_gccflags,r10000,mips4,r8000,mips4,mips2) \

			-Wa,--trap

CHECKFLAGS-$(CONFIG_CPU_R10000)	+= -D_MIPS_ISA=_MIPS_ISA_MIPS4



ifdef CONFIG_CPU_SB1

ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
@@ -630,7 +496,6 @@ 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 +504,6 @@ 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



#
@@ -757,6 +612,12 @@ CFLAGS += $(cflags-y) 


LDFLAGS			+= -m $(ld-emul)



ifdef CONFIG_MIPS

CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \

	egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \

	sed -e 's/^\#define /-D/' -e 's/ /="/' -e 's/$$/"/')

endif



OBJCOPYFLAGS		+= --remove-section=.reginfo



#

arch/mips/cobalt/Kconfig

0 → 100644
+7 −0
Original line number Diff line number Diff line 
config EARLY_PRINTK

	bool "Early console support"

	depends on MIPS_COBALT

	help

	  Provide early console support by direct access to the

	  on board UART. The UART must have been previously

	  initialised by the boot loader.

arch/mips/cobalt/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -4,4 +4,6 @@ 


obj-y	 := irq.o int-handler.o reset.o setup.o



obj-$(CONFIG_EARLY_PRINTK)	+= console.o



EXTRA_AFLAGS := $(CFLAGS)

arch/mips/cobalt/console.c

0 → 100644
+43 −0
Original line number Diff line number Diff line 
/*

 * (C) P. Horton 2006

 */



#include <linux/config.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/console.h>

#include <linux/serial_reg.h>

#include <asm/addrspace.h>

#include <asm/mach-cobalt/cobalt.h>



static void putchar(int c)

{

	if(c == '\n')

		putchar('\r');



	while(!(COBALT_UART[UART_LSR] & UART_LSR_THRE))

		;



	COBALT_UART[UART_TX] = c;

}



static void cons_write(struct console *c, const char *s, unsigned n)

{

	while(n-- && *s)

		putchar(*s++);

}



static struct console cons_info =

{

	.name	= "uart",

	.write	= cons_write,

	.flags	= CON_PRINTBUFFER | CON_BOOT,

	.index	= -1,

};



void __init cobalt_early_console(void)

{

	register_console(&cons_info);



	printk("Cobalt: early console registered\n");

}