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[src/trunk]: src/sys/arch/riscv Beginnings of RISCV kernel support. Note tha...
details: https://anonhg.NetBSD.org/src/rev/c074971a6bb1
branches: trunk
changeset: 336962:c074971a6bb1
user: matt <matt%NetBSD.org@localhost>
date: Sat Mar 28 16:13:56 2015 +0000
description:
Beginnings of RISCV kernel support. Note that the pmap support is not yet
committed and probably won't be for awhile. This is mostly preliminary
waiting for the supervisor specification to come out. Lots of missing pieces
but it mostly builds.
diffstat:
sys/arch/riscv/conf/GENERIC | 179 ++++++++++
sys/arch/riscv/conf/INSTALL | 5 +
sys/arch/riscv/conf/INSTALL.config | 13 +
sys/arch/riscv/conf/Makefile.riscv | 141 ++++++++
sys/arch/riscv/conf/files.riscv | 82 ++++
sys/arch/riscv/conf/kern.ldscript | 146 ++++++++
sys/arch/riscv/conf/std.riscv | 38 ++
sys/arch/riscv/conf/std.riscv64 | 5 +
sys/arch/riscv/htif/htif.c | 72 ++++
sys/arch/riscv/htif/htif_cons.c | 64 +++
sys/arch/riscv/htif/htif_disk.c | 41 ++
sys/arch/riscv/htif/htif_var.h | 53 +++
sys/arch/riscv/include/cpu.h | 6 +-
sys/arch/riscv/include/intr.h | 4 +-
sys/arch/riscv/include/locore.h | 65 ++-
sys/arch/riscv/include/sysreg.h | 66 ++-
sys/arch/riscv/include/types.h | 3 +-
sys/arch/riscv/riscv/autoconf.c | 65 +++
sys/arch/riscv/riscv/clock_machdep.c | 45 ++
sys/arch/riscv/riscv/core32_machdep.c | 9 +
sys/arch/riscv/riscv/core_machdep.c | 102 +++++
sys/arch/riscv/riscv/cpu_mainbus.c | 61 +++
sys/arch/riscv/riscv/cpu_subr.c | 34 +
sys/arch/riscv/riscv/db_disasm.c | 56 +++
sys/arch/riscv/riscv/db_machdep.c | 244 ++++++++++++++
sys/arch/riscv/riscv/db_trace.c | 45 ++
sys/arch/riscv/riscv/exec_machdep.c | 68 +++
sys/arch/riscv/riscv/fixup.c | 34 +
sys/arch/riscv/riscv/fpu.c | 193 +++++++++++
sys/arch/riscv/riscv/genassym.cf | 197 +++++++++++
sys/arch/riscv/riscv/kobj_machdep.c | 174 +++++++++
sys/arch/riscv/riscv/locore.S | 557 ++++++++++++++++++++++++++++++++
sys/arch/riscv/riscv/mainbus.c | 74 ++++
sys/arch/riscv/riscv/netbsd32_machdep.c | 187 ++++++++++
sys/arch/riscv/riscv/pmap_machdep.c | 208 +++++++++++
sys/arch/riscv/riscv/process_machdep.c | 106 ++++++
sys/arch/riscv/riscv/procfs_machdep.c | 51 ++
sys/arch/riscv/riscv/riscv_machdep.c | 376 +++++++++++++++++++++
sys/arch/riscv/riscv/sig32_machdep.c | 18 +
sys/arch/riscv/riscv/sig_machdep.c | 135 +++++++
sys/arch/riscv/riscv/softint_machdep.c | 110 ++++++
sys/arch/riscv/riscv/spl.S | 151 ++++++++
sys/arch/riscv/riscv/stubs.c | 34 +
sys/arch/riscv/riscv/sys_machdep.c | 48 ++
sys/arch/riscv/riscv/syscall.c | 251 ++++++++++++++
sys/arch/riscv/riscv/trap.c | 548 +++++++++++++++++++++++++++++++
sys/arch/riscv/riscv/vm_machdep.c | 283 ++++++++++++++++
47 files changed, 5404 insertions(+), 43 deletions(-)
diffs (truncated from 5773 to 300 lines):
diff -r 31b9c4c9e7eb -r c074971a6bb1 sys/arch/riscv/conf/GENERIC
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/riscv/conf/GENERIC Sat Mar 28 16:13:56 2015 +0000
@@ -0,0 +1,179 @@
+# $NetBSD: GENERIC,v 1.1 2015/03/28 16:13:56 matt Exp $
+#
+# GENERIC machine description file
+#
+# This machine description file is used to generate the default NetBSD
+# kernel. The generic kernel does not include all options, subsystems
+# and device drivers, but should be useful for most applications.
+#
+# The machine description file can be customised for your specific
+# machine to reduce the kernel size and improve its performance.
+#
+# For further information on compiling NetBSD kernels, see the config(8)
+# man page.
+#
+# For further information on hardware support for this architecture, see
+# the intro(4) man page. For further information about kernel options
+# for this architecture, see the options(4) man page. For an explanation
+# of each device driver in this file see the section 4 man page for the
+# device.
+
+include "arch/riscv/conf/std.riscv64"
+
+options INCLUDE_CONFIG_FILE # embed config file in kernel binary
+
+#ident "GENERIC-$Revision: 1.1 $"
+
+maxusers 64 # estimated number of users
+
+# Standard system options
+
+options NTP # NTP phase/frequency locked loop
+
+options KTRACE # system call tracing via ktrace(1)
+
+# Note: SysV IPC parameters could be changed dynamically, see sysctl(8).
+options SYSVMSG # System V-like message queues
+options SYSVSEM # System V-like semaphores
+options SYSVSHM # System V-like memory sharing
+
+options MODULAR # new style module(7) framework
+options MODULAR_DEFAULT_AUTOLOAD
+options USERCONF # userconf(4) support
+#options PIPE_SOCKETPAIR # smaller, but slower pipe(2)
+options SYSCTL_INCLUDE_DESCR # Include sysctl descriptions in kernel
+
+# Alternate buffer queue strategies for better responsiveness under high
+# disk I/O load.
+#options BUFQ_READPRIO
+options BUFQ_PRIOCSCAN
+
+# Diagnostic/debugging support options
+options DIAGNOSTIC # inexpensive kernel consistency checks
+ # XXX to be commented out on release branch
+#options DEBUG # expensive debugging checks/support
+#options LOCKDEBUG # expensive locking checks/support
+#options KMEMSTATS # kernel memory statistics (vmstat -m)
+
+#
+# Because gcc omits the frame pointer for any -O level, the line below
+# is needed to make backtraces in DDB work.
+#
+#makeoptions COPTS="-O2 -fno-omit-frame-pointer"
+makeoptions COPY_SYMTAB=1
+options DDB # in-kernel debugger
+#options DDB_COMMANDONENTER="bt" # execute command when ddb is entered
+#options DDB_ONPANIC=1 # see also sysctl(7): `ddb.onpanic'
+options DDB_HISTORY_SIZE=512 # enable history editing in DDB
+#options KGDB # remote debugger
+#options KGDB_DEVNAME="\"com\"",KGDB_DEVADDR=0x3f8,KGDB_DEVRATE=9600
+#options SYSCALL_STATS # per syscall counts
+#options SYSCALL_TIMES # per syscall times
+#options SYSCALL_TIMES_HASCOUNTER # use 'broken' rdtsc (soekris)
+
+# Compatibility options
+options COMPAT_70 # NetBSD 7.0 binary compatibility.
+options COMPAT_43 # and 4.3BSD
+
+options COMPAT_OSSAUDIO
+options COMPAT_NETBSD32
+#options COMPAT_LINUX
+#options COMPAT_LINUX32 # req. COMPAT_LINUX and COMPAT_NETBSD32
+#options EXEC_ELF32
+options COMPAT_BSDPTY # /dev/[pt]ty?? ptys.
+
+# Wedge support
+options DKWEDGE_AUTODISCOVER # Automatically add dk(4) instances
+options DKWEDGE_METHOD_GPT # Supports GPT partitions as wedges
+options DKWEDGE_METHOD_BSDLABEL # Support disklabel entries as wedges
+options DKWEDGE_METHOD_MBR # Support MBR partitions as wedges
+options DKWEDGE_METHOD_APPLE # Support Apple partitions as wedges
+
+include "conf/filesystems.config"
+
+# File system options
+options QUOTA # legacy UFS quotas
+options QUOTA2 # new, in-filesystem UFS quotas
+options FFS_EI # FFS Endian Independent support
+options WAPBL # File system journaling support
+# Note that UFS_DIRHASH is suspected of causing kernel memory corruption.
+# It is not recommended for general use.
+#options UFS_DIRHASH # UFS Large Directory Hashing - Experimental
+options NFSSERVER # Network File System server
+#options EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
+ # immutable) behave as system flags.
+#options FFS_NO_SNAPSHOT # No FFS snapshot support
+
+# Networking options
+#options GATEWAY # packet forwarding
+options INET # IP + ICMP + TCP + UDP
+options INET6 # IPV6
+options IPSEC # IP security
+#options IPSEC_DEBUG # debug for IP security
+#options MPLS # MultiProtocol Label Switching (needs ifmpls)
+#options MROUTING # IP multicast routing
+#options PIM # Protocol Independent Multicast
+#options NETATALK # AppleTalk networking protocols
+#options PPP_BSDCOMP # BSD-Compress compression support for PPP
+#options PPP_DEFLATE # Deflate compression support for PPP
+#options PPP_FILTER # Active filter support for PPP (requires bpf)
+#options IPFILTER_LOG # ipmon(8) log support
+#options IPFILTER_LOOKUP # ippool(8) support
+#options IPFILTER_COMPAT # Compat for IP-Filter
+#options IPFILTER_DEFAULT_BLOCK # block all packets by default
+#options TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG
+
+#options ALTQ # Manipulate network interfaces' output queues
+#options ALTQ_BLUE # Stochastic Fair Blue
+#options ALTQ_CBQ # Class-Based Queueing
+#options ALTQ_CDNR # Diffserv Traffic Conditioner
+#options ALTQ_FIFOQ # First-In First-Out Queue
+#options ALTQ_FLOWVALVE # RED/flow-valve (red-penalty-box)
+#options ALTQ_HFSC # Hierarchical Fair Service Curve
+#options ALTQ_LOCALQ # Local queueing discipline
+#options ALTQ_PRIQ # Priority Queueing
+#options ALTQ_RED # Random Early Detection
+#options ALTQ_RIO # RED with IN/OUT
+#options ALTQ_WFQ # Weighted Fair Queueing
+
+# These options enable verbose messages for several subsystems.
+# Warning, these may compile large string tables into the kernel!
+
+# Kernel root file system and dump configuration.
+config netbsd root on ? type ?
+
+#
+# Device configuration
+#
+mainbus0 at root
+cpu0 at mainbus0
+htif0 at mainbus0
+htifcons0 at htif0
+htifdisk0 at htif0
+ld0 at htifdisk0
+
+
+# Pseudo-Devices
+
+pseudo-device crypto # /dev/crypto device
+pseudo-device swcrypto # software crypto implementation
+
+# disk/mass storage pseudo-devices
+#pseudo-device md # memory disk device (ramdisk)
+#options MEMORY_DISK_HOOKS # enable root ramdisk
+#options MEMORY_DISK_DYNAMIC # loaded via kernel module(7)
+
+pseudo-device vnd # disk-like interface to files
+options VND_COMPRESSION # compressed vnd(4)
+
+pseudo-device loop # network loopback
+pseudo-device pty # pseudo-terminals
+pseudo-device clockctl # user control of clock subsystem
+pseudo-device ksyms # /dev/ksyms
+pseudo-device lockstat # lock profiling
+
+# userland interface to drivers, including autoconf and properties retrieval
+pseudo-device drvctl
+
+options PAX_MPROTECT=0 # PaX mprotect(2) restrictions
+options PAX_ASLR=0 # PaX Address Space Layout Randomization
diff -r 31b9c4c9e7eb -r c074971a6bb1 sys/arch/riscv/conf/INSTALL
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/riscv/conf/INSTALL Sat Mar 28 16:13:56 2015 +0000
@@ -0,0 +1,5 @@
+#
+#
+#
+include "arch/riscv/conf/GENERIC"
+include "arch/riscv/conf/INSTALL.config"
diff -r 31b9c4c9e7eb -r c074971a6bb1 sys/arch/riscv/conf/INSTALL.config
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/riscv/conf/INSTALL.config Sat Mar 28 16:13:56 2015 +0000
@@ -0,0 +1,13 @@
+# $NetBSD: INSTALL.config,v 1.1 2015/03/28 16:13:56 matt Exp $
+#
+# INSTALL -- Common configuration fragment for install kernels.
+#
+
+options MEMORY_DISK_HOOKS
+options MEMORY_DISK_IS_ROOT # Force root on ramdisk
+options MEMORY_DISK_ROOT_SIZE=8192
+options MEMORY_DISK_RBFLAGS=RB_SINGLE # boot in single-user mode
+
+makeoptions NEED_MDSETIMAGE="yes"
+
+pseudo-device md
diff -r 31b9c4c9e7eb -r c074971a6bb1 sys/arch/riscv/conf/Makefile.riscv
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/riscv/conf/Makefile.riscv Sat Mar 28 16:13:56 2015 +0000
@@ -0,0 +1,141 @@
+# $NetBSD: Makefile.riscv,v 1.1 2015/03/28 16:13:56 matt Exp $
+
+# Makefile for NetBSD
+#
+# This makefile is constructed from a machine description:
+# config machineid
+# Most changes should be made in the machine description
+# /sys/arch/<machine>/conf/``machineid''
+# after which you should do
+# config machineid
+# Machine generic makefile changes should be made in
+# /sys/arch/riscv/conf/Makefile.riscv
+# after which config should be rerun for all machines of that type.
+#
+# To specify debugging, add the config line: makeoptions DEBUG="-g"
+# A better way is to specify -g only for a few files.
+#
+# makeoptions DEBUGLIST="uvm* trap if_*"
+
+USETOOLS?= no
+NEED_OWN_INSTALL_TARGET?=no
+.include <bsd.own.mk>
+
+##
+## (1) port identification
+##
+.ifndef S
+S= ../../../..
+.endif
+THISRISCV= $S/arch/${MACHINE}
+RISCV= $S/arch/riscv
+GENASSYM_CONF= ${RISCV}/riscv/genassym.cf
+.-include "${THISRISCV}/conf/Makefile.${MACHINE}.inc"
+
+##
+## (2) compile settings
+##
+## Note: -ffixed-?? must be kept in sync with cpu.h.
+##
+CPPFLAGS+= -D${MACHINE}
+CFLAGS+= -fPIC -Wa,-fno-pic -msoft-float
+.if !defined(LP64) || ${LP64} == "no"
+CFLAGS+= -m32
+AFLAGS+= -m32
+LDFLAGS+= -m elf32lriscv
+LINKFORMAT+= -m elf32lriscv
+SYSTEM_LD_TAIL_EXTRA+= \
+ ;echo ${OBJCOPY} -O elf32-littleriscv $@ $@.elf32; \
+ ${OBJCOPY} -O elf32-littleriscv $@ $@.elf32
+.endif # LP64=no
+AFLAGS+= -x assembler-with-cpp ${AOPTS}
+
+##
+## (3) libkern and compat
+##
+OPT_MODULAR= %MODULAR%
+.if !empty(OPT_MODULAR)
+KERN_AS= obj
+.else
+KERN_AS= library
+.endif
+
+##
+## (4) local objects, compile rules, and dependencies
+##
+MD_OBJS= locore.o
+MD_CFILES=
+MD_SFILES= ${RISCV}/riscv/locore.S
+
+locore.o: ${RISCV}/riscv/locore.S assym.h
+ ${NORMAL_S}
+
+##
+## (5) link settings
+##
+.if ${MACHINE_ARCH} == "riscv64" && ${LP64:Uyes} == "yes"
+TEXTADDR?= 0xFFFFFFFF80002000
+.else
+TEXTADDR?= 0xC0001000
+.endif
+KERNLDSCRIPT?= ${RISCV}/conf/kern.ldscript
+LINKFORMAT+= -T ${KERNLDSCRIPT}
+EXTRA_LINKFLAGS= ${LDOPTS} --relax
+LINKFLAGS_NORMAL= -X
+STRIPFLAGS= -g -X
+
+##
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