Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index f4ad113..44b5da3 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -1,10 +1,11 @@
# SPDX-License-Identifier: GPL-2.0
config NIOS2
def_bool y
+ select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_UNCACHED_SEGMENT
select ARCH_NO_SWAP
- select DMA_NONCOHERENT_OPS
select TIMER_OF
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
@@ -23,6 +24,7 @@
select SPARSE_IRQ
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
+ select MMU_GATHER_NO_RANGE if MMU
config GENERIC_CSUM
def_bool y
@@ -36,15 +38,9 @@
config NO_IOPORT_MAP
def_bool y
-config HAS_DMA
- def_bool y
-
config FPU
def_bool n
-config RWSEM_GENERIC_SPINLOCK
- def_bool y
-
config TRACE_IRQFLAGS_SUPPORT
def_bool n
@@ -125,7 +121,6 @@
config NIOS2_PASS_CMDLINE
bool "Passed kernel command line from u-boot"
- default n
help
Use bootargs env variable from u-boot for kernel command line.
will override "Default kernel command string".
diff --git a/arch/nios2/Kconfig.debug b/arch/nios2/Kconfig.debug
index f1da8a7..a8bc06e 100644
--- a/arch/nios2/Kconfig.debug
+++ b/arch/nios2/Kconfig.debug
@@ -1,8 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-config TRACE_IRQFLAGS_SUPPORT
- def_bool y
-
config EARLY_PRINTK
bool "Activate early kernel debugging"
default y
diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 8673a79..52c03e6 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -49,21 +49,13 @@
PHONY += $(BOOT_TARGETS) install
KBUILD_IMAGE := $(nios2-boot)/vmImage
-ifneq ($(CONFIG_NIOS2_DTB_SOURCE),"")
- core-y += $(nios2-boot)/
-endif
+core-y += $(nios2-boot)/dts/
all: vmImage
archclean:
$(Q)$(MAKE) $(clean)=$(nios2-boot)
-%.dtb: | scripts
- $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
-
-dtbs:
- $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
-
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
@@ -76,5 +68,4 @@
echo ' (your) ~/bin/$(INSTALLKERNEL) or'
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
echo ' install to $$(INSTALL_PATH)'
- echo ' dtbs - Build device tree blobs for enabled boards'
endef
diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
index 2ba23a6..37dfc7e 100644
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -31,27 +31,5 @@
$(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
-# Rule to build device tree blobs
-DTB_SRC := $(patsubst "%",%,$(CONFIG_NIOS2_DTB_SOURCE))
-
-# Make sure the generated dtb gets removed during clean
-extra-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) += system.dtb
-
-$(obj)/system.dtb: $(DTB_SRC) FORCE
- $(call cmd,dtc)
-
-# Ensure system.dtb exists
-$(obj)/linked_dtb.o: $(obj)/system.dtb
-
-obj-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) += linked_dtb.o
-
-targets += $(dtb-y)
-
-# Rule to build device tree blobs with make command
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call if_changed_dep,dtc)
-
-$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
-
install:
sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
diff --git a/arch/nios2/boot/compressed/console.c b/arch/nios2/boot/compressed/console.c
index 2675e87..2cb2e7c 100644
--- a/arch/nios2/boot/compressed/console.c
+++ b/arch/nios2/boot/compressed/console.c
@@ -1,19 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2008-2010 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/io.h>
diff --git a/arch/nios2/boot/compressed/misc.c b/arch/nios2/boot/compressed/misc.c
index 8437782..42fc4bb 100644
--- a/arch/nios2/boot/compressed/misc.c
+++ b/arch/nios2/boot/compressed/misc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2009 Thomas Chou <thomas@wytron.com.tw>
*
@@ -11,20 +12,6 @@
* Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000
*
* Based on arch/sh/boot/compressed/misc.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/string.h>
diff --git a/arch/nios2/boot/compressed/vmlinux.lds.S b/arch/nios2/boot/compressed/vmlinux.lds.S
index e867b37..9b02d0c 100644
--- a/arch/nios2/boot/compressed/vmlinux.lds.S
+++ b/arch/nios2/boot/compressed/vmlinux.lds.S
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2009 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <asm-generic/vmlinux.lds.h>
diff --git a/arch/nios2/boot/dts/10m50_devboard.dts b/arch/nios2/boot/dts/10m50_devboard.dts
index 4bb4dc1..5e4ab03 100644
--- a/arch/nios2/boot/dts/10m50_devboard.dts
+++ b/arch/nios2/boot/dts/10m50_devboard.dts
@@ -1,17 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Altera Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
*/
/dts-v1/;
diff --git a/arch/nios2/boot/dts/3c120_devboard.dts b/arch/nios2/boot/dts/3c120_devboard.dts
index 56f4b5d..d10fb81 100644
--- a/arch/nios2/boot/dts/3c120_devboard.dts
+++ b/arch/nios2/boot/dts/3c120_devboard.dts
@@ -1,19 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2013 Altera Corporation
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
* This file is generated by sopc2dts.
*/
diff --git a/arch/nios2/boot/dts/Makefile b/arch/nios2/boot/dts/Makefile
new file mode 100644
index 0000000..a91a0b0
--- /dev/null
+++ b/arch/nios2/boot/dts/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y := $(patsubst "%.dts",%.dtb.o,$(CONFIG_NIOS2_DTB_SOURCE))
+
+dtstree := $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
diff --git a/arch/nios2/boot/linked_dtb.S b/arch/nios2/boot/linked_dtb.S
deleted file mode 100644
index 071f922..0000000
--- a/arch/nios2/boot/linked_dtb.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2011 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-.section .dtb.init.rodata,"a"
-.incbin "arch/nios2/boot/system.dtb"
diff --git a/arch/nios2/configs/10m50_defconfig b/arch/nios2/configs/10m50_defconfig
index c601c8f..1137ef2 100644
--- a/arch/nios2/configs/10m50_defconfig
+++ b/arch/nios2/configs/10m50_defconfig
@@ -35,7 +35,6 @@
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
-CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
@@ -77,4 +76,3 @@
CONFIG_ROOT_NFS=y
CONFIG_SUNRPC_DEBUG=y
CONFIG_DEBUG_INFO=y
-# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/nios2/configs/3c120_defconfig b/arch/nios2/configs/3c120_defconfig
index fce3358..a0f160b 100644
--- a/arch/nios2/configs/3c120_defconfig
+++ b/arch/nios2/configs/3c120_defconfig
@@ -37,7 +37,6 @@
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
-CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
@@ -74,4 +73,3 @@
CONFIG_ROOT_NFS=y
CONFIG_SUNRPC_DEBUG=y
CONFIG_DEBUG_INFO=y
-# CONFIG_ENABLE_WARN_DEPRECATED is not set
diff --git a/arch/nios2/include/asm/Kbuild b/arch/nios2/include/asm/Kbuild
index 8fde4fa..6809399 100644
--- a/arch/nios2/include/asm/Kbuild
+++ b/arch/nios2/include/asm/Kbuild
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
generic-y += atomic.h
generic-y += barrier.h
generic-y += bitops.h
@@ -23,15 +24,16 @@
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kprobes.h
+generic-y += kvm_para.h
generic-y += local.h
generic-y += mcs_spinlock.h
generic-y += mm-arch-hooks.h
+generic-y += mmiowb.h
generic-y += module.h
generic-y += pci.h
generic-y += percpu.h
generic-y += preempt.h
generic-y += sections.h
-generic-y += segment.h
generic-y += serial.h
generic-y += spinlock.h
generic-y += topology.h
diff --git a/arch/nios2/include/asm/asm-macros.h b/arch/nios2/include/asm/asm-macros.h
index 29fa2e4..522e50a 100644
--- a/arch/nios2/include/asm/asm-macros.h
+++ b/arch/nios2/include/asm/asm-macros.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Macro used to simplify coding multi-line assembler.
* Some of the bit test macro can simplify down to one line
@@ -6,18 +7,6 @@
* Copyright (C) 2004 Microtronix Datacom Ltd.
*
* All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
- *
*/
#ifndef _ASM_NIOS2_ASMMACROS_H
#define _ASM_NIOS2_ASMMACROS_H
diff --git a/arch/nios2/include/asm/asm-offsets.h b/arch/nios2/include/asm/asm-offsets.h
index 5b9f5e0..e514652 100644
--- a/arch/nios2/include/asm/asm-offsets.h
+++ b/arch/nios2/include/asm/asm-offsets.h
@@ -1,20 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
* Copyright (C) 2009 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <generated/asm-offsets.h>
diff --git a/arch/nios2/include/asm/cache.h b/arch/nios2/include/asm/cache.h
index 2293cf5..43695f3 100644
--- a/arch/nios2/include/asm/cache.h
+++ b/arch/nios2/include/asm/cache.h
@@ -1,18 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2004 Microtronix Datacom Ltd.
*
* All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
*/
#ifndef _ASM_NIOS2_CACHE_H
diff --git a/arch/nios2/include/asm/cpuinfo.h b/arch/nios2/include/asm/cpuinfo.h
index dbdaf96..61349e0 100644
--- a/arch/nios2/include/asm/cpuinfo.h
+++ b/arch/nios2/include/asm/cpuinfo.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_CPUINFO_H
diff --git a/arch/nios2/include/asm/elf.h b/arch/nios2/include/asm/elf.h
index b7d655d..984dd6d 100644
--- a/arch/nios2/include/asm/elf.h
+++ b/arch/nios2/include/asm/elf.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_ELF_H
diff --git a/arch/nios2/include/asm/irq.h b/arch/nios2/include/asm/irq.h
index 8e40fd9..13ce372 100644
--- a/arch/nios2/include/asm/irq.h
+++ b/arch/nios2/include/asm/irq.h
@@ -1,20 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2013 Altera Corporation
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_IRQ_H
diff --git a/arch/nios2/include/asm/irqflags.h b/arch/nios2/include/asm/irqflags.h
index 75ab92e..b3ec3e5 100644
--- a/arch/nios2/include/asm/irqflags.h
+++ b/arch/nios2/include/asm/irqflags.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
diff --git a/arch/nios2/include/asm/kgdb.h b/arch/nios2/include/asm/kgdb.h
index 8fd5e3b..1fe8a6b 100644
--- a/arch/nios2/include/asm/kgdb.h
+++ b/arch/nios2/include/asm/kgdb.h
@@ -1,23 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2015 Altera Corporation
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
*
* Based on the code posted by Kazuyasu on the Altera Forum at:
* http://www.alteraforum.com/forum/showpost.php?p=77003&postcount=20
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_KGDB_H
diff --git a/arch/nios2/include/asm/linkage.h b/arch/nios2/include/asm/linkage.h
index e0c6dec..2113023 100644
--- a/arch/nios2/include/asm/linkage.h
+++ b/arch/nios2/include/asm/linkage.h
@@ -1,18 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2009 Thomas Chou <thomas@wytron.com.tw>
*
* All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
*/
#ifndef _ASM_NIOS2_LINKAGE_H
diff --git a/arch/nios2/include/asm/page.h b/arch/nios2/include/asm/page.h
index f1fbdc4..79fcac6 100644
--- a/arch/nios2/include/asm/page.h
+++ b/arch/nios2/include/asm/page.h
@@ -101,12 +101,6 @@
# define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-# define UNCAC_ADDR(addr) \
- ((void *)((unsigned)(addr) | CONFIG_NIOS2_IO_REGION_BASE))
-# define CAC_ADDR(addr) \
- ((void *)(((unsigned)(addr) & ~CONFIG_NIOS2_IO_REGION_BASE) | \
- CONFIG_NIOS2_KERNEL_REGION_BASE))
-
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/nios2/include/asm/pgalloc.h b/arch/nios2/include/asm/pgalloc.h
index bb47d08..0b146d7 100644
--- a/arch/nios2/include/asm/pgalloc.h
+++ b/arch/nios2/include/asm/pgalloc.h
@@ -12,6 +12,8 @@
#include <linux/mm.h>
+#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
+
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
pte_t *pte)
{
@@ -37,49 +39,10 @@
free_pages((unsigned long)pgd, PGD_ORDER);
}
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
- unsigned long address)
-{
- pte_t *pte;
-
- pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_ZERO, PTE_ORDER);
-
- return pte;
-}
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
- unsigned long address)
-{
- struct page *pte;
-
- pte = alloc_pages(GFP_KERNEL, PTE_ORDER);
- if (pte) {
- if (!pgtable_page_ctor(pte)) {
- __free_page(pte);
- return NULL;
- }
- clear_highpage(pte);
- }
- return pte;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_pages((unsigned long)pte, PTE_ORDER);
-}
-
-static inline void pte_free(struct mm_struct *mm, struct page *pte)
-{
- pgtable_page_dtor(pte);
- __free_pages(pte, PTE_ORDER);
-}
-
#define __pte_free_tlb(tlb, pte, addr) \
do { \
- pgtable_page_dtor(pte); \
+ pgtable_pte_page_dtor(pte); \
tlb_remove_page((tlb), (pte)); \
} while (0)
-#define check_pgt_cache() do { } while (0)
-
#endif /* _ASM_NIOS2_PGALLOC_H */
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index db4f7d1..99985d8 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -232,7 +232,6 @@
pte_val(null) = (addr >> PAGE_SHIFT) & 0xf;
set_pte_at(mm, addr, ptep, null);
- flush_tlb_one(addr);
}
/*
@@ -292,8 +291,6 @@
#include <asm-generic/pgtable.h>
-#define pgtable_cache_init() do { } while (0)
-
extern void __init paging_init(void);
extern void __init mmu_init(void);
diff --git a/arch/nios2/include/asm/processor.h b/arch/nios2/include/asm/processor.h
index 4944e2e..94bcb86 100644
--- a/arch/nios2/include/asm/processor.h
+++ b/arch/nios2/include/asm/processor.h
@@ -38,12 +38,6 @@
#define KUSER_SIZE (PAGE_SIZE)
#ifndef __ASSEMBLY__
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ __label__ _l; _l: &&_l; })
-
# define TASK_SIZE 0x7FFF0000UL
# define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
diff --git a/arch/nios2/include/asm/registers.h b/arch/nios2/include/asm/registers.h
index 615bce1..183c720 100644
--- a/arch/nios2/include/asm/registers.h
+++ b/arch/nios2/include/asm/registers.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_REGISTERS_H
diff --git a/arch/nios2/include/asm/setup.h b/arch/nios2/include/asm/setup.h
index ac9bff2..908a152 100644
--- a/arch/nios2/include/asm/setup.h
+++ b/arch/nios2/include/asm/setup.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_SETUP_H
diff --git a/arch/nios2/include/asm/shmparam.h b/arch/nios2/include/asm/shmparam.h
index 6078429..4288844 100644
--- a/arch/nios2/include/asm/shmparam.h
+++ b/arch/nios2/include/asm/shmparam.h
@@ -1,17 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright Altera Corporation (C) <2015>. All rights reserved
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ASM_NIOS2_SHMPARAM_H
#define _ASM_NIOS2_SHMPARAM_H
diff --git a/arch/nios2/include/asm/syscall.h b/arch/nios2/include/asm/syscall.h
index 9de2208..526449e 100644
--- a/arch/nios2/include/asm/syscall.h
+++ b/arch/nios2/include/asm/syscall.h
@@ -1,22 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright Altera Corporation (C) <2014>. All rights reserved
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_NIOS2_SYSCALL_H__
#define __ASM_NIOS2_SYSCALL_H__
+#include <uapi/linux/audit.h>
#include <linux/err.h>
#include <linux/sched.h>
@@ -58,81 +48,30 @@
}
static inline void syscall_get_arguments(struct task_struct *task,
- struct pt_regs *regs, unsigned int i, unsigned int n,
- unsigned long *args)
+ struct pt_regs *regs, unsigned long *args)
{
- BUG_ON(i + n > 6);
-
- switch (i) {
- case 0:
- if (!n--)
- break;
- *args++ = regs->r4;
- case 1:
- if (!n--)
- break;
- *args++ = regs->r5;
- case 2:
- if (!n--)
- break;
- *args++ = regs->r6;
- case 3:
- if (!n--)
- break;
- *args++ = regs->r7;
- case 4:
- if (!n--)
- break;
- *args++ = regs->r8;
- case 5:
- if (!n--)
- break;
- *args++ = regs->r9;
- case 6:
- if (!n--)
- break;
- default:
- BUG();
- }
+ *args++ = regs->r4;
+ *args++ = regs->r5;
+ *args++ = regs->r6;
+ *args++ = regs->r7;
+ *args++ = regs->r8;
+ *args = regs->r9;
}
static inline void syscall_set_arguments(struct task_struct *task,
- struct pt_regs *regs, unsigned int i, unsigned int n,
- const unsigned long *args)
+ struct pt_regs *regs, const unsigned long *args)
{
- BUG_ON(i + n > 6);
+ regs->r4 = *args++;
+ regs->r5 = *args++;
+ regs->r6 = *args++;
+ regs->r7 = *args++;
+ regs->r8 = *args++;
+ regs->r9 = *args;
+}
- switch (i) {
- case 0:
- if (!n--)
- break;
- regs->r4 = *args++;
- case 1:
- if (!n--)
- break;
- regs->r5 = *args++;
- case 2:
- if (!n--)
- break;
- regs->r6 = *args++;
- case 3:
- if (!n--)
- break;
- regs->r7 = *args++;
- case 4:
- if (!n--)
- break;
- regs->r8 = *args++;
- case 5:
- if (!n--)
- break;
- regs->r9 = *args++;
- case 6:
- if (!n)
- break;
- default:
- BUG();
- }
+static inline int syscall_get_arch(struct task_struct *task)
+{
+ return AUDIT_ARCH_NIOS2;
}
#endif
diff --git a/arch/nios2/include/asm/syscalls.h b/arch/nios2/include/asm/syscalls.h
index 0245d78..b4d4ed3 100644
--- a/arch/nios2/include/asm/syscalls.h
+++ b/arch/nios2/include/asm/syscalls.h
@@ -1,18 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright Altera Corporation (C) 2013. All rights reserved
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef __ASM_NIOS2_SYSCALLS_H
#define __ASM_NIOS2_SYSCALLS_H
diff --git a/arch/nios2/include/asm/timex.h b/arch/nios2/include/asm/timex.h
index 2f2abb2..a769f87 100644
--- a/arch/nios2/include/asm/timex.h
+++ b/arch/nios2/include/asm/timex.h
@@ -1,17 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright Altera Corporation (C) 2014. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_TIMEX_H
diff --git a/arch/nios2/include/asm/tlb.h b/arch/nios2/include/asm/tlb.h
index d3bc648..f9f2e27 100644
--- a/arch/nios2/include/asm/tlb.h
+++ b/arch/nios2/include/asm/tlb.h
@@ -11,22 +11,12 @@
#ifndef _ASM_NIOS2_TLB_H
#define _ASM_NIOS2_TLB_H
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
extern void set_mmu_pid(unsigned long pid);
/*
- * NiosII doesn't need any special per-pte or per-vma handling, except
- * we need to flush cache for the area to be unmapped.
+ * NIOS32 does have flush_tlb_range(), but it lacks a limit and fallback to
+ * full mm invalidation. So use flush_tlb_mm() for everything.
*/
-#define tlb_start_vma(tlb, vma) \
- do { \
- if (!tlb->fullmm) \
- flush_cache_range(vma, vma->vm_start, vma->vm_end); \
- } while (0)
-
-#define tlb_end_vma(tlb, vma) do { } while (0)
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
#include <linux/pagemap.h>
#include <asm-generic/tlb.h>
diff --git a/arch/nios2/include/asm/tlbflush.h b/arch/nios2/include/asm/tlbflush.h
index e19652f..362d6da 100644
--- a/arch/nios2/include/asm/tlbflush.h
+++ b/arch/nios2/include/asm/tlbflush.h
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#ifndef _ASM_NIOS2_TLBFLUSH_H
@@ -26,21 +13,32 @@
*
* - flush_tlb_all() flushes all processes TLB entries
* - flush_tlb_mm(mm) flushes the specified mm context TLB entries
- * - flush_tlb_page(vma, vmaddr) flushes one page
* - flush_tlb_range(vma, start, end) flushes a range of pages
+ * - flush_tlb_page(vma, address) flushes a page
* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ * - flush_tlb_kernel_page(address) flushes a kernel page
+ *
+ * - reload_tlb_page(vma, address, pte) flushes the TLB for address like
+ * flush_tlb_page, then replaces it with a TLB for pte.
*/
extern void flush_tlb_all(void);
extern void flush_tlb_mm(struct mm_struct *mm);
extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end);
extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
-extern void flush_tlb_one(unsigned long vaddr);
static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
+ unsigned long address)
{
- flush_tlb_one(addr);
+ flush_tlb_range(vma, address, address + PAGE_SIZE);
}
+static inline void flush_tlb_kernel_page(unsigned long address)
+{
+ flush_tlb_kernel_range(address, address + PAGE_SIZE);
+}
+
+extern void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr,
+ pte_t pte);
+
#endif /* _ASM_NIOS2_TLBFLUSH_H */
diff --git a/arch/nios2/include/asm/uaccess.h b/arch/nios2/include/asm/uaccess.h
index dfa3c7c..e83f831 100644
--- a/arch/nios2/include/asm/uaccess.h
+++ b/arch/nios2/include/asm/uaccess.h
@@ -26,7 +26,6 @@
#define USER_DS MAKE_MM_SEG(0x80000000UL)
#define KERNEL_DS MAKE_MM_SEG(0)
-#define get_ds() (KERNEL_DS)
#define get_fs() (current_thread_info()->addr_limit)
#define set_fs(seg) (current_thread_info()->addr_limit = (seg))
@@ -37,7 +36,7 @@
(((signed long)(((long)get_fs().seg) & \
((long)(addr) | (((long)(addr)) + (len)) | (len)))) == 0)
-#define access_ok(type, addr, len) \
+#define access_ok(addr, len) \
likely(__access_ok((unsigned long)(addr), (unsigned long)(len)))
# define __EX_TABLE_SECTION ".section __ex_table,\"a\"\n"
@@ -70,7 +69,7 @@
static inline unsigned long __must_check clear_user(void __user *to,
unsigned long n)
{
- if (!access_ok(VERIFY_WRITE, to, n))
+ if (!access_ok(to, n))
return n;
return __clear_user(to, n);
}
@@ -142,7 +141,7 @@
long __gu_err = -EFAULT; \
const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
unsigned long __gu_val = 0; \
- if (access_ok(VERIFY_READ, __gu_ptr, sizeof(*__gu_ptr))) \
+ if (access_ok( __gu_ptr, sizeof(*__gu_ptr))) \
__get_user_common(__gu_val, sizeof(*__gu_ptr), \
__gu_ptr, __gu_err); \
(x) = (__force __typeof__(x))__gu_val; \
@@ -168,7 +167,7 @@
long __pu_err = -EFAULT; \
__typeof__(*(ptr)) __user *__pu_ptr = (ptr); \
__typeof__(*(ptr)) __pu_val = (__typeof(*ptr))(x); \
- if (access_ok(VERIFY_WRITE, __pu_ptr, sizeof(*__pu_ptr))) { \
+ if (access_ok(__pu_ptr, sizeof(*__pu_ptr))) { \
switch (sizeof(*__pu_ptr)) { \
case 1: \
__put_user_asm(__pu_val, "stb", __pu_ptr, __pu_err); \
diff --git a/arch/nios2/include/uapi/asm/Kbuild b/arch/nios2/include/uapi/asm/Kbuild
index 13a3d77..e784701 100644
--- a/arch/nios2/include/uapi/asm/Kbuild
+++ b/arch/nios2/include/uapi/asm/Kbuild
@@ -1,30 +1,2 @@
-# UAPI Header export list
-include include/uapi/asm-generic/Kbuild.asm
-
-generic-y += auxvec.h
-generic-y += bitsperlong.h
-generic-y += bpf_perf_event.h
-generic-y += errno.h
-generic-y += fcntl.h
-generic-y += ioctl.h
-generic-y += ioctls.h
-generic-y += ipcbuf.h
-generic-y += kvm_para.h
-generic-y += mman.h
-generic-y += msgbuf.h
-generic-y += param.h
-generic-y += poll.h
-generic-y += posix_types.h
-generic-y += resource.h
-generic-y += sembuf.h
-generic-y += setup.h
-generic-y += shmbuf.h
-generic-y += siginfo.h
-generic-y += socket.h
-generic-y += sockios.h
-generic-y += stat.h
-generic-y += statfs.h
-generic-y += termbits.h
-generic-y += termios.h
-generic-y += types.h
+# SPDX-License-Identifier: GPL-2.0
generic-y += ucontext.h
diff --git a/arch/nios2/include/uapi/asm/unistd.h b/arch/nios2/include/uapi/asm/unistd.h
index b6bdae0..0b4bb1d 100644
--- a/arch/nios2/include/uapi/asm/unistd.h
+++ b/arch/nios2/include/uapi/asm/unistd.h
@@ -19,6 +19,9 @@
#define sys_mmap2 sys_mmap_pgoff
#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SET_GET_RLIMIT
+#define __ARCH_WANT_TIME32_SYSCALLS
/* Use the standard ABI for syscalls */
#include <asm-generic/unistd.h>
diff --git a/arch/nios2/kernel/asm-offsets.c b/arch/nios2/kernel/asm-offsets.c
index c3ee73c..e3d9b7b 100644
--- a/arch/nios2/kernel/asm-offsets.c
+++ b/arch/nios2/kernel/asm-offsets.c
@@ -1,19 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/stddef.h>
diff --git a/arch/nios2/kernel/cpuinfo.c b/arch/nios2/kernel/cpuinfo.c
index 9320771..203870c 100644
--- a/arch/nios2/kernel/cpuinfo.c
+++ b/arch/nios2/kernel/cpuinfo.c
@@ -1,22 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2013 Altera Corporation
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
*
* Based on cpuinfo.c from microblaze
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/kernel.h>
@@ -47,7 +34,7 @@
const char *str;
int len;
- cpu = of_find_node_by_type(NULL, "cpu");
+ cpu = of_get_cpu_node(0, NULL);
if (!cpu)
panic("%s: No CPU found in devicetree!\n", __func__);
@@ -120,6 +107,8 @@
cpuinfo.reset_addr = fcpu(cpu, "altr,reset-addr");
cpuinfo.exception_addr = fcpu(cpu, "altr,exception-addr");
cpuinfo.fast_tlb_miss_exc_addr = fcpu(cpu, "altr,fast-tlb-miss-addr");
+
+ of_node_put(cpu);
}
#ifdef CONFIG_PROC_FS
diff --git a/arch/nios2/kernel/insnemu.S b/arch/nios2/kernel/insnemu.S
index 1c6b651..a027cc6 100644
--- a/arch/nios2/kernel/insnemu.S
+++ b/arch/nios2/kernel/insnemu.S
@@ -1,19 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2003-2013 Altera Corporation
* All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
diff --git a/arch/nios2/kernel/irq.c b/arch/nios2/kernel/irq.c
index 6c833a9..5f3555c 100644
--- a/arch/nios2/kernel/irq.c
+++ b/arch/nios2/kernel/irq.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2013 Altera Corporation
* Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
@@ -6,20 +7,6 @@
* based on irq.c from m68k which is:
*
* Copyright (C) 2007 Greg Ungerer <gerg@snapgear.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/init.h>
diff --git a/arch/nios2/kernel/kgdb.c b/arch/nios2/kernel/kgdb.c
index 1178591..d0963fc 100644
--- a/arch/nios2/kernel/kgdb.c
+++ b/arch/nios2/kernel/kgdb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Nios2 KGDB support
*
@@ -6,20 +7,6 @@
*
* Based on the code posted by Kazuyasu on the Altera Forum at:
* http://www.alteraforum.com/forum/showpost.php?p=77003&postcount=20
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/ptrace.h>
#include <linux/kgdb.h>
@@ -165,7 +152,7 @@
/* Nothing to do */
}
-struct kgdb_arch arch_kgdb_ops = {
+const struct kgdb_arch arch_kgdb_ops = {
/* Breakpoint instruction: trap 30 */
.gdb_bpt_instr = { 0xba, 0x6f, 0x3b, 0x00 },
};
diff --git a/arch/nios2/kernel/nios2_ksyms.c b/arch/nios2/kernel/nios2_ksyms.c
index bf2f55d..4e70404 100644
--- a/arch/nios2/kernel/nios2_ksyms.c
+++ b/arch/nios2/kernel/nios2_ksyms.c
@@ -9,12 +9,20 @@
#include <linux/export.h>
#include <linux/string.h>
+#include <asm/cacheflush.h>
+#include <asm/pgtable.h>
+
/* string functions */
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
+/* memory management */
+
+EXPORT_SYMBOL(empty_zero_page);
+EXPORT_SYMBOL(flush_icache_range);
+
/*
* libgcc functions - functions that are used internally by the
* compiler... (prototypes are not correct though, but that
@@ -31,3 +39,7 @@
DECLARE_EXPORT(__umoddi3);
DECLARE_EXPORT(__umodsi3);
DECLARE_EXPORT(__muldi3);
+DECLARE_EXPORT(__ucmpdi2);
+DECLARE_EXPORT(__lshrdi3);
+DECLARE_EXPORT(__ashldi3);
+DECLARE_EXPORT(__ashrdi3);
diff --git a/arch/nios2/kernel/prom.c b/arch/nios2/kernel/prom.c
index 8d7446a..8d98af5 100644
--- a/arch/nios2/kernel/prom.c
+++ b/arch/nios2/kernel/prom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Device tree support
*
@@ -7,48 +8,17 @@
* Based on MIPS support for CONFIG_OF device tree support
*
* Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/init.h>
#include <linux/types.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/io.h>
#include <asm/sections.h>
-void __init early_init_dt_add_memory_arch(u64 base, u64 size)
-{
- u64 kernel_start = (u64)virt_to_phys(_text);
-
- if (!memory_size &&
- (kernel_start >= base) && (kernel_start < (base + size)))
- memory_size = size;
-
-}
-
-int __init early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,
- bool nomap)
-{
- reserve_bootmem(base, size, BOOTMEM_DEFAULT);
- return 0;
-}
-
void __init early_init_devtree(void *params)
{
__be32 *dtb = (u32 *)__dtb_start;
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index 926a02b..4cf35b0 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -16,7 +16,7 @@
#include <linux/sched.h>
#include <linux/sched/task.h>
#include <linux/console.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/initrd.h>
#include <linux/of_fdt.h>
#include <linux/screen_info.h>
@@ -123,7 +123,7 @@
dtb_passed = r6;
if (r7)
- strncpy(cmdline_passed, (char *)r7, COMMAND_LINE_SIZE);
+ strlcpy(cmdline_passed, (char *)r7, COMMAND_LINE_SIZE);
}
#endif
@@ -131,10 +131,10 @@
#ifndef CONFIG_CMDLINE_FORCE
if (cmdline_passed[0])
- strncpy(boot_command_line, cmdline_passed, COMMAND_LINE_SIZE);
+ strlcpy(boot_command_line, cmdline_passed, COMMAND_LINE_SIZE);
#ifdef CONFIG_NIOS2_CMDLINE_IGNORE_DTB
else
- strncpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+ strlcpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
#endif
#endif
@@ -143,10 +143,12 @@
void __init setup_arch(char **cmdline_p)
{
- int bootmap_size;
+ int dram_start;
console_verbose();
+ dram_start = memblock_start_of_DRAM();
+ memory_size = memblock_phys_mem_size();
memory_start = PAGE_ALIGN((unsigned long)__pa(_end));
memory_end = (unsigned long) CONFIG_NIOS2_MEM_BASE + memory_size;
@@ -163,39 +165,11 @@
max_low_pfn = PFN_DOWN(memory_end);
max_mapnr = max_low_pfn;
- /*
- * give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map at the start of memory
- */
- pr_debug("init_bootmem_node(?,%#lx, %#x, %#lx)\n",
- min_low_pfn, PFN_DOWN(PHYS_OFFSET), max_low_pfn);
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- min_low_pfn, PFN_DOWN(PHYS_OFFSET),
- max_low_pfn);
-
- /*
- * free the usable memory, we have to make sure we do not free
- * the bootmem bitmap so we then reserve it after freeing it :-)
- */
- pr_debug("free_bootmem(%#lx, %#lx)\n",
- memory_start, memory_end - memory_start);
- free_bootmem(memory_start, memory_end - memory_start);
-
- /*
- * Reserve the bootmem bitmap itself as well. We do this in two
- * steps (first step was init_bootmem()) because this catches
- * the (very unlikely) case of us accidentally initializing the
- * bootmem allocator with an invalid RAM area.
- *
- * Arguments are start, size
- */
- pr_debug("reserve_bootmem(%#lx, %#x)\n", memory_start, bootmap_size);
- reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
-
+ memblock_reserve(dram_start, memory_start - dram_start);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
- reserve_bootmem(virt_to_phys((void *)initrd_start),
- initrd_end - initrd_start, BOOTMEM_DEFAULT);
+ memblock_reserve(virt_to_phys((void *)initrd_start),
+ initrd_end - initrd_start);
}
#endif /* CONFIG_BLK_DEV_INITRD */
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c
index 20662b0..a42dd09 100644
--- a/arch/nios2/kernel/signal.c
+++ b/arch/nios2/kernel/signal.c
@@ -106,7 +106,7 @@
sigset_t set;
int rval;
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ if (!access_ok(frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
@@ -120,7 +120,7 @@
return rval;
badframe:
- force_sig(SIGSEGV, current);
+ force_sig(SIGSEGV);
return 0;
}
@@ -211,7 +211,7 @@
return 0;
give_sigsegv:
- force_sigsegv(ksig->sig, current);
+ force_sigsegv(ksig->sig);
return -EFAULT;
}
diff --git a/arch/nios2/kernel/syscall_table.c b/arch/nios2/kernel/syscall_table.c
index 06e6ac1..6176d63 100644
--- a/arch/nios2/kernel/syscall_table.c
+++ b/arch/nios2/kernel/syscall_table.c
@@ -1,18 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright Altera Corporation (C) 2013. All rights reserved
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/syscalls.h>
diff --git a/arch/nios2/kernel/time.c b/arch/nios2/kernel/time.c
index ab88b6d..54467d0 100644
--- a/arch/nios2/kernel/time.c
+++ b/arch/nios2/kernel/time.c
@@ -214,12 +214,12 @@
{
*base = of_iomap(np, 0);
if (!*base) {
- pr_crit("Unable to map reg for %s\n", np->name);
+ pr_crit("Unable to map reg for %pOFn\n", np);
return -ENXIO;
}
if (of_property_read_u32(np, "clock-frequency", freq)) {
- pr_crit("Unable to get %s clock frequency\n", np->name);
+ pr_crit("Unable to get %pOFn clock frequency\n", np);
return -EINVAL;
}
diff --git a/arch/nios2/kernel/traps.c b/arch/nios2/kernel/traps.c
index 3bc3cd2..486db79 100644
--- a/arch/nios2/kernel/traps.c
+++ b/arch/nios2/kernel/traps.c
@@ -26,7 +26,7 @@
static void _send_sig(int signo, int code, unsigned long addr)
{
- force_sig_fault(signo, code, (void __user *) addr, current);
+ force_sig_fault(signo, code, (void __user *) addr);
}
void die(const char *str, struct pt_regs *regs, long err)
diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S
index 6a8045b..6ad64f1 100644
--- a/arch/nios2/kernel/vmlinux.lds.S
+++ b/arch/nios2/kernel/vmlinux.lds.S
@@ -1,19 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2009 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
diff --git a/arch/nios2/lib/Makefile b/arch/nios2/lib/Makefile
index 5572566..9d5bf1d 100644
--- a/arch/nios2/lib/Makefile
+++ b/arch/nios2/lib/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Makefile for Nios2-specific library files.
#
diff --git a/arch/nios2/lib/delay.c b/arch/nios2/lib/delay.c
index 088119c..f1e39c7 100644
--- a/arch/nios2/lib/delay.c
+++ b/arch/nios2/lib/delay.c
@@ -1,17 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* Copyright Altera Corporation (C) 2014. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
*/
#include <linux/module.h>
diff --git a/arch/nios2/mm/cacheflush.c b/arch/nios2/mm/cacheflush.c
index 506f6e1..65de1bd 100644
--- a/arch/nios2/mm/cacheflush.c
+++ b/arch/nios2/mm/cacheflush.c
@@ -198,12 +198,15 @@
EXPORT_SYMBOL(flush_dcache_page);
void update_mmu_cache(struct vm_area_struct *vma,
- unsigned long address, pte_t *pte)
+ unsigned long address, pte_t *ptep)
{
- unsigned long pfn = pte_pfn(*pte);
+ pte_t pte = *ptep;
+ unsigned long pfn = pte_pfn(pte);
struct page *page;
struct address_space *mapping;
+ reload_tlb_page(vma, address, pte);
+
if (!pfn_valid(pfn))
return;
diff --git a/arch/nios2/mm/dma-mapping.c b/arch/nios2/mm/dma-mapping.c
index 4af9e5b..9cb2386 100644
--- a/arch/nios2/mm/dma-mapping.c
+++ b/arch/nios2/mm/dma-mapping.c
@@ -60,32 +60,28 @@
}
}
-void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t gfp, unsigned long attrs)
+void arch_dma_prep_coherent(struct page *page, size_t size)
{
- void *ret;
+ unsigned long start = (unsigned long)page_address(page);
- /* optimized page clearing */
- gfp |= __GFP_ZERO;
-
- if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
- gfp |= GFP_DMA;
-
- ret = (void *) __get_free_pages(gfp, get_order(size));
- if (ret != NULL) {
- *dma_handle = virt_to_phys(ret);
- flush_dcache_range((unsigned long) ret,
- (unsigned long) ret + size);
- ret = UNCAC_ADDR(ret);
- }
-
- return ret;
+ flush_dcache_range(start, start + size);
}
-void arch_dma_free(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
+void *uncached_kernel_address(void *ptr)
{
- unsigned long addr = (unsigned long) CAC_ADDR((unsigned long) vaddr);
+ unsigned long addr = (unsigned long)ptr;
- free_pages(addr, get_order(size));
+ addr |= CONFIG_NIOS2_IO_REGION_BASE;
+
+ return (void *)ptr;
+}
+
+void *cached_kernel_address(void *ptr)
+{
+ unsigned long addr = (unsigned long)ptr;
+
+ addr &= ~CONFIG_NIOS2_IO_REGION_BASE;
+ addr |= CONFIG_NIOS2_KERNEL_REGION_BASE;
+
+ return (void *)ptr;
}
diff --git a/arch/nios2/mm/fault.c b/arch/nios2/mm/fault.c
index 24fd84c..6a2e716 100644
--- a/arch/nios2/mm/fault.c
+++ b/arch/nios2/mm/fault.c
@@ -24,7 +24,6 @@
#include <linux/mm.h>
#include <linux/extable.h>
#include <linux/uaccess.h>
-#include <linux/ptrace.h>
#include <asm/mmu_context.h>
#include <asm/traps.h>
@@ -271,7 +270,7 @@
if (!pte_present(*pte_k))
goto no_context;
- flush_tlb_one(address);
+ flush_tlb_kernel_page(address);
return;
}
}
diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c
index c92fe42..2c609c2 100644
--- a/arch/nios2/mm/init.c
+++ b/arch/nios2/mm/init.c
@@ -23,7 +23,7 @@
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/pagemap.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/slab.h>
#include <linux/binfmts.h>
@@ -73,7 +73,7 @@
high_memory = __va(end_mem);
/* this will put all memory onto the freelists */
- free_all_bootmem();
+ memblock_free_all();
mem_init_print_info(NULL);
}
@@ -82,18 +82,6 @@
flush_tlb_all();
}
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
-void __ref free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
#define __page_aligned(order) __aligned(PAGE_SIZE << (order))
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER);
pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
diff --git a/arch/nios2/mm/tlb.c b/arch/nios2/mm/tlb.c
index cf10326..7fea59e 100644
--- a/arch/nios2/mm/tlb.c
+++ b/arch/nios2/mm/tlb.c
@@ -23,10 +23,6 @@
((((1UL << (cpuinfo.tlb_ptr_sz - cpuinfo.tlb_num_ways_log2))) - 1) \
<< PAGE_SHIFT)
-/* Used as illegal PHYS_ADDR for TLB mappings
- */
-#define MAX_PHYS_ADDR 0
-
static void get_misc_and_pid(unsigned long *misc, unsigned long *pid)
{
*misc = RDCTL(CTL_TLBMISC);
@@ -35,28 +31,23 @@
}
/*
- * All entries common to a mm share an asid. To effectively flush these
- * entries, we just bump the asid.
+ * This provides a PTEADDR value for addr that will cause a TLB miss
+ * (fast TLB miss). TLB invalidation replaces entries with this value.
*/
-void flush_tlb_mm(struct mm_struct *mm)
+static unsigned long pteaddr_invalid(unsigned long addr)
{
- if (current->mm == mm)
- flush_tlb_all();
- else
- memset(&mm->context, 0, sizeof(mm_context_t));
+ return ((addr | 0xC0000000UL) >> PAGE_SHIFT) << 2;
}
/*
* This one is only used for pages with the global bit set so we don't care
* much about the ASID.
*/
-void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
+static void replace_tlb_one_pid(unsigned long addr, unsigned long mmu_pid, unsigned long tlbacc)
{
unsigned int way;
unsigned long org_misc, pid_misc;
- pr_debug("Flush tlb-entry for vaddr=%#lx\n", addr);
-
/* remember pid/way until we return. */
get_misc_and_pid(&org_misc, &pid_misc);
@@ -67,30 +58,48 @@
unsigned long tlbmisc;
unsigned long pid;
- tlbmisc = pid_misc | TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
+ tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
+
pteaddr = RDCTL(CTL_PTEADDR);
+ if (((pteaddr >> 2) & 0xfffff) != (addr >> PAGE_SHIFT))
+ continue;
+
tlbmisc = RDCTL(CTL_TLBMISC);
pid = (tlbmisc >> TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK;
- if (((((pteaddr >> 2) & 0xfffff)) == (addr >> PAGE_SHIFT)) &&
- pid == mmu_pid) {
- unsigned long vaddr = CONFIG_NIOS2_IO_REGION_BASE +
- ((PAGE_SIZE * cpuinfo.tlb_num_lines) * way) +
- (addr & TLB_INDEX_MASK);
- pr_debug("Flush entry by writing %#lx way=%dl pid=%ld\n",
- vaddr, way, (pid_misc >> TLBMISC_PID_SHIFT));
+ if (pid != mmu_pid)
+ continue;
- WRCTL(CTL_PTEADDR, (vaddr >> 12) << 2);
- tlbmisc = pid_misc | TLBMISC_WE |
- (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, (MAX_PHYS_ADDR >> PAGE_SHIFT));
- }
+ tlbmisc = (mmu_pid << TLBMISC_PID_SHIFT) | TLBMISC_WE |
+ (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ if (tlbacc == 0)
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
+ WRCTL(CTL_TLBACC, tlbacc);
+ /*
+ * There should be only a single entry that maps a
+ * particular {address,pid} so break after a match.
+ */
+ break;
}
WRCTL(CTL_TLBMISC, org_misc);
}
+static void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
+{
+ pr_debug("Flush tlb-entry for vaddr=%#lx\n", addr);
+
+ replace_tlb_one_pid(addr, mmu_pid, 0);
+}
+
+static void reload_tlb_one_pid(unsigned long addr, unsigned long mmu_pid, pte_t pte)
+{
+ pr_debug("Reload tlb-entry for vaddr=%#lx\n", addr);
+
+ replace_tlb_one_pid(addr, mmu_pid, pte_val(pte));
+}
+
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
@@ -102,19 +111,18 @@
}
}
-void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
{
- while (start < end) {
- flush_tlb_one(start);
- start += PAGE_SIZE;
- }
+ unsigned long mmu_pid = get_pid_from_context(&vma->vm_mm->context);
+
+ reload_tlb_one_pid(addr, mmu_pid, pte);
}
/*
* This one is only used for pages with the global bit set so we don't care
* much about the ASID.
*/
-void flush_tlb_one(unsigned long addr)
+static void flush_tlb_one(unsigned long addr)
{
unsigned int way;
unsigned long org_misc, pid_misc;
@@ -130,30 +138,33 @@
unsigned long pteaddr;
unsigned long tlbmisc;
- tlbmisc = pid_misc | TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
+ tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
+
pteaddr = RDCTL(CTL_PTEADDR);
- tlbmisc = RDCTL(CTL_TLBMISC);
+ if (((pteaddr >> 2) & 0xfffff) != (addr >> PAGE_SHIFT))
+ continue;
- if ((((pteaddr >> 2) & 0xfffff)) == (addr >> PAGE_SHIFT)) {
- unsigned long vaddr = CONFIG_NIOS2_IO_REGION_BASE +
- ((PAGE_SIZE * cpuinfo.tlb_num_lines) * way) +
- (addr & TLB_INDEX_MASK);
+ pr_debug("Flush entry by writing way=%dl pid=%ld\n",
+ way, (pid_misc >> TLBMISC_PID_SHIFT));
- pr_debug("Flush entry by writing %#lx way=%dl pid=%ld\n",
- vaddr, way, (pid_misc >> TLBMISC_PID_SHIFT));
-
- tlbmisc = pid_misc | TLBMISC_WE |
- (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_PTEADDR, (vaddr >> 12) << 2);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, (MAX_PHYS_ADDR >> PAGE_SHIFT));
- }
+ tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
+ WRCTL(CTL_TLBACC, 0);
}
WRCTL(CTL_TLBMISC, org_misc);
}
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+ while (start < end) {
+ flush_tlb_one(start);
+ start += PAGE_SIZE;
+ }
+}
+
void dump_tlb_line(unsigned long line)
{
unsigned int way;
@@ -177,7 +188,7 @@
tlbmisc = RDCTL(CTL_TLBMISC);
tlbacc = RDCTL(CTL_TLBACC);
- if ((tlbacc << PAGE_SHIFT) != (MAX_PHYS_ADDR & PAGE_MASK)) {
+ if ((tlbacc << PAGE_SHIFT) != 0) {
pr_debug("-- way:%02x vpn:0x%08lx phys:0x%08lx pid:0x%02lx flags:%c%c%c%c%c\n",
way,
(pteaddr << (PAGE_SHIFT-2)),
@@ -203,8 +214,9 @@
dump_tlb_line(i);
}
-void flush_tlb_pid(unsigned long pid)
+void flush_tlb_pid(unsigned long mmu_pid)
{
+ unsigned long addr = 0;
unsigned int line;
unsigned int way;
unsigned long org_misc, pid_misc;
@@ -213,55 +225,65 @@
get_misc_and_pid(&org_misc, &pid_misc);
for (line = 0; line < cpuinfo.tlb_num_lines; line++) {
- WRCTL(CTL_PTEADDR, line << 2);
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
- unsigned long pteaddr;
unsigned long tlbmisc;
- unsigned long tlbacc;
+ unsigned long pid;
- tlbmisc = pid_misc | TLBMISC_RD |
- (way << TLBMISC_WAY_SHIFT);
+ tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
WRCTL(CTL_TLBMISC, tlbmisc);
- pteaddr = RDCTL(CTL_PTEADDR);
tlbmisc = RDCTL(CTL_TLBMISC);
- tlbacc = RDCTL(CTL_TLBACC);
+ pid = (tlbmisc >> TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK;
+ if (pid != mmu_pid)
+ continue;
- if (((tlbmisc>>TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK)
- == pid) {
- tlbmisc = pid_misc | TLBMISC_WE |
- (way << TLBMISC_WAY_SHIFT);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC,
- (MAX_PHYS_ADDR >> PAGE_SHIFT));
- }
+ tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
+ WRCTL(CTL_TLBMISC, tlbmisc);
+ WRCTL(CTL_TLBACC, 0);
}
- WRCTL(CTL_TLBMISC, org_misc);
+ addr += PAGE_SIZE;
+ }
+
+ WRCTL(CTL_TLBMISC, org_misc);
+}
+
+/*
+ * All entries common to a mm share an asid. To effectively flush these
+ * entries, we just bump the asid.
+ */
+void flush_tlb_mm(struct mm_struct *mm)
+{
+ if (current->mm == mm) {
+ unsigned long mmu_pid = get_pid_from_context(&mm->context);
+ flush_tlb_pid(mmu_pid);
+ } else {
+ memset(&mm->context, 0, sizeof(mm_context_t));
}
}
void flush_tlb_all(void)
{
- int i;
- unsigned long vaddr = CONFIG_NIOS2_IO_REGION_BASE;
+ unsigned long addr = 0;
+ unsigned int line;
unsigned int way;
- unsigned long org_misc, pid_misc, tlbmisc;
+ unsigned long org_misc, pid_misc;
/* remember pid/way until we return */
get_misc_and_pid(&org_misc, &pid_misc);
- pid_misc |= TLBMISC_WE;
+
+ /* Start at way 0, way is auto-incremented after each TLBACC write */
+ WRCTL(CTL_TLBMISC, TLBMISC_WE);
/* Map each TLB entry to physcal address 0 with no-access and a
bad ptbase */
- for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
- tlbmisc = pid_misc | (way << TLBMISC_WAY_SHIFT);
- for (i = 0; i < cpuinfo.tlb_num_lines; i++) {
- WRCTL(CTL_PTEADDR, ((vaddr) >> PAGE_SHIFT) << 2);
- WRCTL(CTL_TLBMISC, tlbmisc);
- WRCTL(CTL_TLBACC, (MAX_PHYS_ADDR >> PAGE_SHIFT));
- vaddr += 1UL << 12;
- }
+ for (line = 0; line < cpuinfo.tlb_num_lines; line++) {
+ WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
+ for (way = 0; way < cpuinfo.tlb_num_ways; way++)
+ WRCTL(CTL_TLBACC, 0);
+
+ addr += PAGE_SIZE;
}
/* restore pid/way */
@@ -270,6 +292,10 @@
void set_mmu_pid(unsigned long pid)
{
- WRCTL(CTL_TLBMISC, (RDCTL(CTL_TLBMISC) & TLBMISC_WAY) |
- ((pid & TLBMISC_PID_MASK) << TLBMISC_PID_SHIFT));
+ unsigned long tlbmisc;
+
+ tlbmisc = RDCTL(CTL_TLBMISC);
+ tlbmisc = (tlbmisc & TLBMISC_WAY);
+ tlbmisc |= (pid & TLBMISC_PID_MASK) << TLBMISC_PID_SHIFT;
+ WRCTL(CTL_TLBMISC, tlbmisc);
}
diff --git a/arch/nios2/platform/Kconfig.platform b/arch/nios2/platform/Kconfig.platform
index 74c1aaf..9e32fb7 100644
--- a/arch/nios2/platform/Kconfig.platform
+++ b/arch/nios2/platform/Kconfig.platform
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
menu "Platform options"
comment "Memory settings"
@@ -17,7 +18,6 @@
config NIOS2_DTB_AT_PHYS_ADDR
bool "DTB at physical address"
- default n
help
When enabled you can select a physical address to load the dtb from.
Normally this address is passed by a bootloader such as u-boot but
@@ -37,7 +37,6 @@
config NIOS2_DTB_SOURCE_BOOL
bool "Compile and link device tree into kernel image"
- default n
help
This allows you to specify a dts (device tree source) file
which will be compiled and linked into the kernel image.
@@ -62,21 +61,18 @@
config NIOS2_HW_MUL_SUPPORT
bool "Enable MUL instruction"
- default n
help
Set to true if you configured the Nios II to include the MUL
instruction. This will enable the -mhw-mul compiler flag.
config NIOS2_HW_MULX_SUPPORT
bool "Enable MULX instruction"
- default n
help
Set to true if you configured the Nios II to include the MULX
instruction. Enables the -mhw-mulx compiler flag.
config NIOS2_HW_DIV_SUPPORT
bool "Enable DIV instruction"
- default n
help
Set to true if you configured the Nios II to include the DIV
instruction. Enables the -mhw-div compiler flag.
@@ -84,7 +80,6 @@
config NIOS2_BMX_SUPPORT
bool "Enable BMX instructions"
depends on NIOS2_ARCH_REVISION = 2
- default n
help
Set to true if you configured the Nios II R2 to include
the BMX Bit Manipulation Extension instructions. Enables
@@ -93,7 +88,6 @@
config NIOS2_CDX_SUPPORT
bool "Enable CDX instructions"
depends on NIOS2_ARCH_REVISION = 2
- default n
help
Set to true if you configured the Nios II R2 to include
the CDX Bit Manipulation Extension instructions. Enables
@@ -101,13 +95,11 @@
config NIOS2_FPU_SUPPORT
bool "Custom floating point instr support"
- default n
help
Enables the -mcustom-fpu-cfg=60-1 compiler flag.
config NIOS2_CI_SWAB_SUPPORT
bool "Byteswap custom instruction"
- default n
help
Use the byteswap (endian converter) Nios II custom instruction provided
by Altera and which can be enabled in QSYS builder. This accelerates
diff --git a/arch/nios2/platform/Makefile b/arch/nios2/platform/Makefile
index 46364f1..fb5bdb4 100644
--- a/arch/nios2/platform/Makefile
+++ b/arch/nios2/platform/Makefile
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
obj-y += platform.o