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

…linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (51 commits)
  MIPS: BCM63xx: Add integrated ethernet mac support.
  MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.
  MIPS: BCM63xx: Add Broadcom 63xx CPU definitions.
  MIPS: Octeon:  Move some platform device registration to its own file.
  MIPS: Don't corrupt page tables on vmalloc fault.
  MIPS: Shrink the size of tlb handler
  MIPS: Alchemy: override loops_per_jiffy detection
  MIPS: hw_random: Add hardware RNG for Octeon SOCs.
  MIPS: Octeon:  Add hardware RNG platform device.
  MIPS: Remove useless zero initializations.
  MIPS: Alchemy: get rid of allow_au1k_wait
  MIPS: Octeon: Set kernel_uses_llsc to false on non-SMP builds.
  MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.
  MIPS: Get rid of CONFIG_CPU_HAS_LLSC
  MIPS: Malta: Remove pointless use use of CONFIG_CPU_HAS_LLSC
  MIPS: Rewrite clearing of ll_bit on context switch in C
  MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler
  MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file.
  MIPS: Clean up linker script using new linker script macros.
  MIPS: Use PAGE_SIZE in assembly instead of _PAGE_SIZE.
  ...

Documentation/kernel-parameters.txt

@@ -1286,6 +1286,10 @@ and is between 256 and 4096 characters. It is defined in the file
 			(machvec) in a generic kernel.
 			Example: machvec=hpzx1_swiotlb
 
+	machtype=	[Loongson] Share the same kernel image file between different
+			 yeeloong laptop.
+			Example: machtype=lemote-yeeloong-2f-7inch
+
 	max_addr=nn[KMG]	[KNL,BOOT,ia64] All physical memory greater
 			than or equal to this physical address is ignored.
 

arch/mips/Kconfig

@@ -6,7 +6,7 @@ config MIPS
 	select HAVE_ARCH_KGDB
 	# Horrible source of confusion.  Die, die, die ...
 	select EMBEDDED
-	select RTC_LIB
+	select RTC_LIB if !LEMOTE_FULOONG2E
 
 mainmenu "Linux/MIPS Kernel Configuration"
 
@@ -80,6 +80,21 @@ config BCM47XX
 	help
 	 Support for BCM47XX based boards
 
+config BCM63XX
+	bool "Broadcom BCM63XX based boards"
+	select CEVT_R4K
+	select CSRC_R4K
+	select DMA_NONCOHERENT
+	select IRQ_CPU
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select SYS_HAS_EARLY_PRINTK
+	select SWAP_IO_SPACE
+	select ARCH_REQUIRE_GPIOLIB
+	help
+	 Support for BCM63XX based boards
+
 config MIPS_COBALT
 	bool "Cobalt Server"
 	select CEVT_R4K
@@ -174,30 +189,15 @@ config LASAT
 	select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
-config LEMOTE_FULONG
-	bool "Lemote Fulong mini-PC"
-	select ARCH_SPARSEMEM_ENABLE
-	select CEVT_R4K
-	select CSRC_R4K
-	select SYS_HAS_CPU_LOONGSON2
-	select DMA_NONCOHERENT
-	select BOOT_ELF32
-	select BOARD_SCACHE
-	select HAVE_STD_PC_SERIAL_PORT
-	select HW_HAS_PCI
-	select I8259
-	select ISA
-	select IRQ_CPU
-	select SYS_SUPPORTS_32BIT_KERNEL
-	select SYS_SUPPORTS_64BIT_KERNEL
-	select SYS_SUPPORTS_LITTLE_ENDIAN
-	select SYS_SUPPORTS_HIGHMEM
-	select SYS_HAS_EARLY_PRINTK
-	select GENERIC_ISA_DMA_SUPPORT_BROKEN
-	select CPU_HAS_WB
+config MACH_LOONGSON
+	bool "Loongson family of machines"
 	help
-	  Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
-	  an FPGA northbridge
+	  This enables the support of Loongson family of machines.
+
+	  Loongson is a family of general-purpose MIPS-compatible CPUs.
+	  developed at Institute of Computing Technology (ICT),
+	  Chinese Academy of Sciences (CAS) in the People's Republic
+	  of China. The chief architect is Professor Weiwu Hu.
 
 config MIPS_MALTA
 	bool "MIPS Malta board"
@@ -660,6 +660,7 @@ endchoice
 
 source "arch/mips/alchemy/Kconfig"
 source "arch/mips/basler/excite/Kconfig"
+source "arch/mips/bcm63xx/Kconfig"
 source "arch/mips/jazz/Kconfig"
 source "arch/mips/lasat/Kconfig"
 source "arch/mips/pmc-sierra/Kconfig"
@@ -668,6 +669,7 @@ source "arch/mips/sibyte/Kconfig"
 source "arch/mips/txx9/Kconfig"
 source "arch/mips/vr41xx/Kconfig"
 source "arch/mips/cavium-octeon/Kconfig"
+source "arch/mips/loongson/Kconfig"
 
 endmenu
 
@@ -1044,20 +1046,17 @@ choice
 	prompt "CPU type"
 	default CPU_R4X00
 
-config CPU_LOONGSON2
-	bool "Loongson 2"
-	depends on SYS_HAS_CPU_LOONGSON2
-	select CPU_SUPPORTS_32BIT_KERNEL
-	select CPU_SUPPORTS_64BIT_KERNEL
-	select CPU_SUPPORTS_HIGHMEM
+config CPU_LOONGSON2E
+	bool "Loongson 2E"
+	depends on SYS_HAS_CPU_LOONGSON2E
+	select CPU_LOONGSON2
 	help
 	  The Loongson 2E processor implements the MIPS III instruction set
 	  with many extensions.
 
 config CPU_MIPS32_R1
 	bool "MIPS32 Release 1"
 	depends on SYS_HAS_CPU_MIPS32_R1
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_HIGHMEM
@@ -1075,7 +1074,6 @@ config CPU_MIPS32_R1
 config CPU_MIPS32_R2
 	bool "MIPS32 Release 2"
 	depends on SYS_HAS_CPU_MIPS32_R2
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_HIGHMEM
@@ -1089,7 +1087,6 @@ config CPU_MIPS32_R2
 config CPU_MIPS64_R1
 	bool "MIPS64 Release 1"
 	depends on SYS_HAS_CPU_MIPS64_R1
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
@@ -1109,7 +1106,6 @@ config CPU_MIPS64_R1
 config CPU_MIPS64_R2
 	bool "MIPS64 Release 2"
 	depends on SYS_HAS_CPU_MIPS64_R2
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
@@ -1155,7 +1151,6 @@ config CPU_VR41XX
 config CPU_R4300
 	bool "R4300"
 	depends on SYS_HAS_CPU_R4300
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	help
@@ -1164,7 +1159,6 @@ config CPU_R4300
 config CPU_R4X00
 	bool "R4x00"
 	depends on SYS_HAS_CPU_R4X00
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	help
@@ -1174,15 +1168,13 @@ config CPU_R4X00
 config CPU_TX49XX
 	bool "R49XX"
 	depends on SYS_HAS_CPU_TX49XX
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 
 config CPU_R5000
 	bool "R5000"
 	depends on SYS_HAS_CPU_R5000
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	help
@@ -1191,14 +1183,12 @@ config CPU_R5000
 config CPU_R5432
 	bool "R5432"
 	depends on SYS_HAS_CPU_R5432
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 
 config CPU_R5500
 	bool "R5500"
 	depends on SYS_HAS_CPU_R5500
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	select CPU_SUPPORTS_HUGEPAGES
@@ -1209,7 +1199,6 @@ config CPU_R5500
 config CPU_R6000
 	bool "R6000"
 	depends on EXPERIMENTAL
-	select CPU_HAS_LLSC
 	depends on SYS_HAS_CPU_R6000
 	select CPU_SUPPORTS_32BIT_KERNEL
 	help
@@ -1219,7 +1208,6 @@ config CPU_R6000
 config CPU_NEVADA
 	bool "RM52xx"
 	depends on SYS_HAS_CPU_NEVADA
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	help
@@ -1229,7 +1217,6 @@ config CPU_R8000
 	bool "R8000"
 	depends on EXPERIMENTAL
 	depends on SYS_HAS_CPU_R8000
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_64BIT_KERNEL
 	help
@@ -1239,7 +1226,6 @@ config CPU_R8000
 config CPU_R10000
 	bool "R10000"
 	depends on SYS_HAS_CPU_R10000
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
@@ -1250,7 +1236,6 @@ config CPU_R10000
 config CPU_RM7000
 	bool "RM7000"
 	depends on SYS_HAS_CPU_RM7000
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
@@ -1259,7 +1244,6 @@ config CPU_RM7000
 config CPU_RM9000
 	bool "RM9000"
 	depends on SYS_HAS_CPU_RM9000
-	select CPU_HAS_LLSC
 	select CPU_HAS_PREFETCH
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
@@ -1269,7 +1253,6 @@ config CPU_RM9000
 config CPU_SB1
 	bool "SB1"
 	depends on SYS_HAS_CPU_SB1
-	select CPU_HAS_LLSC
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_64BIT_KERNEL
 	select CPU_SUPPORTS_HIGHMEM
@@ -1296,7 +1279,13 @@ config CPU_CAVIUM_OCTEON
 
 endchoice
 
-config SYS_HAS_CPU_LOONGSON2
+config CPU_LOONGSON2
+	bool
+	select CPU_SUPPORTS_32BIT_KERNEL
+	select CPU_SUPPORTS_64BIT_KERNEL
+	select CPU_SUPPORTS_HIGHMEM
+
+config SYS_HAS_CPU_LOONGSON2E
 	bool
 
 config SYS_HAS_CPU_MIPS32_R1
@@ -1683,9 +1672,6 @@ config SB1_PASS_2_1_WORKAROUNDS
 config 64BIT_PHYS_ADDR
 	bool
 
-config CPU_HAS_LLSC
-	bool
-
 config CPU_HAS_SMARTMIPS
 	depends on SYS_SUPPORTS_SMARTMIPS
 	bool "Support for the SmartMIPS ASE"

arch/mips/Makefile

@@ -120,7 +120,11 @@ 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-$(CONFIG_CPU_LOONGSON2)	+= -march=r4600 -Wa,--trap
+# only gcc >= 4.4 have the loongson-specific support
+cflags-$(CONFIG_CPU_LOONGSON2)	+= -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON2E) += \
+	$(call cc-option,-march=loongson2e,-march=r4600)
+
 cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
 			-Wa,-mips32 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
@@ -314,11 +318,12 @@ cflags-$(CONFIG_WR_PPMC)		+= -I$(srctree)/arch/mips/include/asm/mach-wrppmc
 load-$(CONFIG_WR_PPMC)		+= 0xffffffff80100000
 
 #
-# lemote fulong mini-PC board
+# Loongson family
 #
-core-$(CONFIG_LEMOTE_FULONG) +=arch/mips/lemote/lm2e/
-load-$(CONFIG_LEMOTE_FULONG) +=0xffffffff80100000
-cflags-$(CONFIG_LEMOTE_FULONG) += -I$(srctree)/arch/mips/include/asm/mach-lemote
+core-$(CONFIG_MACH_LOONGSON) +=arch/mips/loongson/
+cflags-$(CONFIG_MACH_LOONGSON) += -I$(srctree)/arch/mips/include/asm/mach-loongson \
+                    -mno-branch-likely
+load-$(CONFIG_LEMOTE_FULOONG2E) +=0xffffffff80100000
 
 #
 # MIPS Malta board
@@ -559,6 +564,13 @@ core-$(CONFIG_BCM47XX)		+= arch/mips/bcm47xx/
 cflags-$(CONFIG_BCM47XX)	+= -I$(srctree)/arch/mips/include/asm/mach-bcm47xx
 load-$(CONFIG_BCM47XX)		:= 0xffffffff80001000
 
+#
+# Broadcom BCM63XX boards
+#
+core-$(CONFIG_BCM63XX)		+= arch/mips/bcm63xx/
+cflags-$(CONFIG_BCM63XX)	+= -I$(srctree)/arch/mips/include/asm/mach-bcm63xx/
+load-$(CONFIG_BCM63XX)		:= 0xffffffff80010000
+
 #
 # SNI RM
 #

arch/mips/alchemy/common/setup.c

@@ -27,6 +27,7 @@
 
 #include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/jiffies.h>
 #include <linux/module.h>
 #include <linux/pm.h>
 
@@ -53,6 +54,9 @@ void __init plat_mem_setup(void)
 	printk(KERN_INFO "(PRId %08x) @ %lu.%02lu MHz\n", read_c0_prid(),
 	       est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);
 
+	/* this is faster than wasting cycles trying to approximate it */
+	preset_lpj = (est_freq >> 1) / HZ;
+
 	_machine_restart = au1000_restart;
 	_machine_halt = au1000_halt;
 	pm_power_off = au1000_power_off;

arch/mips/alchemy/common/time.c

@@ -36,14 +36,13 @@
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
 
+#include <asm/processor.h>
 #include <asm/time.h>
 #include <asm/mach-au1x00/au1000.h>
 
 /* 32kHz clock enabled and detected */
 #define CNTR_OK (SYS_CNTRL_E0 | SYS_CNTRL_32S)
 
-extern int allow_au1k_wait; /* default off for CP0 Counter */
-
 static cycle_t au1x_counter1_read(struct clocksource *cs)
 {
 	return au_readl(SYS_RTCREAD);
@@ -153,13 +152,17 @@ void __init plat_time_init(void)
 
 	printk(KERN_INFO "Alchemy clocksource installed\n");
 
-	/* can now use 'wait' */
-	allow_au1k_wait = 1;
 	return;
 
 cntr_err:
-	/* counters unusable, use C0 counter */
+	/*
+	 * MIPS kernel assigns 'au1k_wait' to 'cpu_wait' before this
+	 * function is called.  Because the Alchemy counters are unusable
+	 * the C0 timekeeping code is installed and use of the 'wait'
+	 * instruction must be prohibited, which is done most easily by
+	 * assigning NULL to cpu_wait.
+	 */
+	cpu_wait = NULL;
 	r4k_clockevent_init();
 	init_r4k_clocksource();
-	allow_au1k_wait = 0;
 }