Module Name: src
Committed By: rin
Date: Fri Apr 2 07:00:33 UTC 2021
Modified Files:
src/doc: CHANGES
Added Files:
src/sys/arch/evbppc/conf: DHT Makefile.dht.inc files.dht std.dht
src/sys/arch/evbppc/dht: autoconf.c locore.S machdep.c
src/sys/arch/evbppc/include: dht.h
Log Message:
evbppc: Add support for DHT Walnut 405GP evaluation board.
(Digital Home Technologies PCB 01070201 Rev. 1.1)
Official web page seems gone, but analyses by Linux people are at:
- https://elinux.org/DHT-Walnut
-
http://web.archive.org/web/20070225171826/http://supernova.stanford.edu/dingdong/
The board features:
- 266MHz PowerPC 405GP processor
- one PC133 SDRAM slot
- two 32-bit 5V PCI slot
- on-chip ethernet controller with DP83843 PHY
- on-chip serial port / GPIO controller
- on-board PDC20265 IDE controller
Hardware limitations:
- no MAC address assigned
- no RTC present
Known problem:
- atabus(4) channels cannot be attached to pdcide(4) for cold boot
dmesg:
- https://dmesgd.nycbug.org/index.cgi?do=view&id=5997
Have fun!
To generate a diff of this commit:
cvs rdiff -u -r1.2788 -r1.2789 src/doc/CHANGES
cvs rdiff -u -r0 -r1.1 src/sys/arch/evbppc/conf/DHT \
src/sys/arch/evbppc/conf/Makefile.dht.inc \
src/sys/arch/evbppc/conf/files.dht src/sys/arch/evbppc/conf/std.dht
cvs rdiff -u -r0 -r1.1 src/sys/arch/evbppc/dht/autoconf.c \
src/sys/arch/evbppc/dht/locore.S src/sys/arch/evbppc/dht/machdep.c
cvs rdiff -u -r0 -r1.1 src/sys/arch/evbppc/include/dht.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/doc/CHANGES
diff -u src/doc/CHANGES:1.2788 src/doc/CHANGES:1.2789
--- src/doc/CHANGES:1.2788 Tue Mar 30 23:31:53 2021
+++ src/doc/CHANGES Fri Apr 2 07:00:33 2021
@@ -1,4 +1,4 @@
-# LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.2788 $>
+# LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.2789 $>
#
#
# [Note: This file does not mention every change made to the NetBSD source tree.
@@ -343,3 +343,5 @@ Changes from NetBSD 9.0 to NetBSD 10.0:
nsd: Import 4.3.5. [christos 20210315]
unbound(8): Import 1.13.1. [christos 20210315]
OpenSSL: Imported 1.1.1k. [christos 20210325]
+ evbppc: Add support for DHT Walnut 405GP evaluation board.
+ [rin 20210402]
Added files:
Index: src/sys/arch/evbppc/conf/DHT
diff -u /dev/null src/sys/arch/evbppc/conf/DHT:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/conf/DHT Fri Apr 2 07:00:33 2021
@@ -0,0 +1,237 @@
+# $NetBSD: DHT,v 1.1 2021/04/02 07:00:33 rin Exp $
+#
+# DHT --- DHT Walnut 405GP Evaluation Board
+# (Digital Home Technologies PCB 01070201 Rev. 1.1)
+#
+
+include "arch/evbppc/conf/std.dht"
+
+options INCLUDE_CONFIG_FILE # embed config file in kernel binary
+
+#ident "DHT-$Revision: 1.1 $"
+
+maxusers 32
+
+
+#
+# Standard system options
+#
+
+options INSECURE # disable kernel security levels
+options NTP # NTP phase/frequency locked loop
+options KTRACE # system call tracing via ktrace(1)
+
+options SYSVMSG # System V message queues
+options SYSVSEM # System V semaphores
+options SYSVSHM # System V shared memory
+
+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
+
+#options UVMHIST
+#options UVMHIST_PRINT
+
+
+# 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 # cheap kernel consistency checks
+#options DEBUG # expensive debugging checks/support
+options DDB # in-kernel debugger
+options DDB_HISTORY_SIZE=512 # enable history editing in DDB
+#options TRAP_PANICWAIT
+makeoptions COPY_SYMTAB=1 # size for embedded symbol table
+
+makeoptions DEBUG="-g" # compile full symbol table
+
+
+#
+# Compatibility options
+#
+
+include "conf/compat_netbsd13.config"
+#options COMPAT_386BSD_MBRPART # recognize old partition ID
+
+#
+# File systems
+#
+
+file-system FFS # UFS
+file-system EXT2FS # second extended file system (linux)
+file-system LFS # log-structured file system
+file-system MFS # memory file system
+file-system NFS # Network File System client
+file-system CD9660 # ISO 9660 + Rock Ridge file system
+file-system MSDOSFS # MS-DOS file system
+file-system FDESC # /dev/fd
+file-system KERNFS # /kern
+file-system NULLFS # loopback file system
+file-system OVERLAY # overlay file system
+file-system PUFFS # Userspace file systems (e.g. ntfs-3g & sshfs)
+file-system PROCFS # /proc
+file-system UMAPFS # NULLFS + uid and gid remapping
+file-system UNION # union file system
+file-system PTYFS # /dev/pts/N support
+file-system TMPFS # Efficient memory file-system
+#file-system NTFS # Windows NT file system (experimental)
+
+
+#
+# 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
+options NFSSERVER # Network File System server
+#options FFS_NO_SNAPSHOT # No FFS snapshot support
+options EXT2FS_SYSTEM_FLAGS # makes ext2fs file flags (append and
+ # immutable) behave as system flags.
+options NFS_BOOT_DHCP # Support DHCP NFS root
+
+
+#
+# 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 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 TCP_DEBUG # Record last TCP_NDEBUG packets with SO_DEBUG
+
+
+#
+# Kernel root file system and dump configuration.
+#
+
+#config netbsd root on ? type ?
+config netbsd root on wd0a type ffs
+#config netbsd root on emac0 type nfs
+
+
+#
+# Device configuration
+#
+
+plb0 at root # Processor Local Bus
+cpu0 at plb? # CPU
+ecc0 at plb? irq 17 # On-chip ECC controller
+pchb0 at plb? # PCI-Host bridges
+
+# On-chip Peripheral Bus support
+opb* at plb? # On-chip Peripheral Bus
+wdog* at opb? # Watchdog timer
+com* at opb? addr ? irq ? # UARTs
+emac0 at opb? addr ? irq ? # Ethernet Media Access Controller
+#options EMAC_EVENT_COUNTERS
+opbgpio0 at opb? addr ? irq ? # On-chip GPIO controller
+gpio* at opbgpio? # GPIO framework
+ # GPIO pins 0-8 go to J5 header. Pins 0 and 1 are also connected to
+ # Power and Media LEDs, respectively (negative logic).
+
+# PCI bus support
+pci* at pchb?
+options PCIVERBOSE # verbose PCI device autoconfig messages
+#options PCI_CONFIG_DUMP # verbosely dump PCI config space
+options PCI_NETBSD_CONFIGURE # Do not rely on BIOS/whatever
+ # to configure PCI devices
+#options PCI_CONFIGURE_VERBOSE # Show PCI config information
+
+pdcide* at pci? dev ? function ? # Promise IDE controllers
+
+# ATA (IDE) bus support
+atabus* at ata?
+wd* at atabus? drive ?
+
+# MII/PHY support
+nsphyter* at mii? phy ? # NS83843 PHYs
+options MIIVERBOSE # verbose PHY autoconfig messages
+
+#
+# Random useful PCI devices known to work.
+#
+
+ppb* at pci? dev ? function ? # PCI-PCI{,e} bridges
+pci* at ppb?
+
+ahcisata* at pci? dev ? function ? # AHCI SATA controllers
+siisata* at pci? dev ? function ? # SiI SteelVine controllers
+
+wm* at pci? dev ? function ? # Intel 82543/82544 gigabit
+igphy* at mii? phy ? # Intel IGP01E1000
+ukphy* at mii? phy ? # generic unknown PHYs
+
+xhci* at pci? dev ? function ? # eXtensible Host Controller
+usb* at xhci?
+
+# USB Hubs
+uhub* at usb?
+uhub* at uhub? port ?
+
+# USB Mass Storage
+umass* at uhub? port ? configuration ? interface ?
+scsibus* at umass?
+sd* at scsibus? target ? lun ? # SCSI disk drives
+
+
+#
+# Pseudo devices
+#
+
+pseudo-device crypto # /dev/crypto device
+pseudo-device swcrypto # software crypto implementation
+
+# disk/mass storage pseudo-devices
+#pseudo-device ccd # concatenated/striped disk devices
+#pseudo-device cgd # cryptographic disk devices
+#pseudo-device raid # RAIDframe disk driver
+#options RAID_AUTOCONFIG # auto-configuration of RAID components
+#pseudo-device fss # file system snapshot device
+#pseudo-device md # memory disk device
+pseudo-device vnd # disk-like interface to files
+
+# network pseudo-devices
+pseudo-device loop # network loopback
+pseudo-device bpfilter # packet filter
+pseudo-device carp # Common Address Redundancy Protocol
+pseudo-device npf # NPF packet filter
+pseudo-device ppp # Point-to-Point Protocol
+pseudo-device pppoe # PPP over Ethernet (RFC 2516)
+pseudo-device sl # Serial Line IP
+pseudo-device irframetty # IrDA frame line discipline
+pseudo-device tap # virtual ethernet
+pseudo-device tun # network tunneling over tty
+pseudo-device gre # generic L3 over IP tunnel
+pseudo-device gif # IPv[46] over IPv[46] tunnel (RFC 1933)
+#pseudo-device faith # IPv[46] TCP relay translation i/f
+pseudo-device stf # 6to4 IPv6 over IPv4 encapsulation
+pseudo-device vlan # IEEE 802.1q encapsulation
+pseudo-device bridge # simple inter-network bridging
+pseudo-device vether # Virtual Ethernet for bridge
+pseudo-device agr # IEEE 802.3ad link aggregation
+
+# miscellaneous pseudo-devices
+pseudo-device pty # pseudo-terminals
+pseudo-device clockctl # user control of clock subsystem
+pseudo-device ksyms # /dev/ksyms
+pseudo-device putter # for puffs and pud
+
+include "dev/veriexec.config"
Index: src/sys/arch/evbppc/conf/Makefile.dht.inc
diff -u /dev/null src/sys/arch/evbppc/conf/Makefile.dht.inc:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/conf/Makefile.dht.inc Fri Apr 2 07:00:33 2021
@@ -0,0 +1,8 @@
+# $NetBSD: Makefile.dht.inc,v 1.1 2021/04/02 07:00:33 rin Exp $
+
+CFLAGS+=-mcpu=405
+AFLAGS+=-mcpu=405
+TEXTADDR?= 100000
+
+SYSTEM_FIRST_OBJ= locore.o
+SYSTEM_FIRST_SFILE= ${THISPPC}/dht/locore.S
Index: src/sys/arch/evbppc/conf/files.dht
diff -u /dev/null src/sys/arch/evbppc/conf/files.dht:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/conf/files.dht Fri Apr 2 07:00:33 2021
@@ -0,0 +1,21 @@
+# $NetBSD: files.dht,v 1.1 2021/04/02 07:00:33 rin Exp $
+#
+# DHT Walnut-specific configuration info
+
+file arch/evbppc/dht/autoconf.c
+file arch/evbppc/dht/machdep.c
+file arch/powerpc/ibm4xx/ibm4xx_autoconf.c
+file arch/powerpc/ibm4xx/ibm40x_machdep.c
+file arch/powerpc/ibm4xx/ibm4xx_machdep.c
+
+# Memory Disk for install kernel
+file dev/md_root.c memory_disk_hooks
+
+# Machine-independent ATA drivers
+include "dev/ata/files.ata"
+
+# Machine-independent SCSI drivers
+include "dev/scsipi/files.scsipi"
+
+# Machine-independent USB drivers
+include "dev/usb/files.usb"
Index: src/sys/arch/evbppc/conf/std.dht
diff -u /dev/null src/sys/arch/evbppc/conf/std.dht:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/conf/std.dht Fri Apr 2 07:00:33 2021
@@ -0,0 +1,32 @@
+# $NetBSD: std.dht,v 1.1 2021/04/02 07:00:33 rin Exp $
+#
+# Standard/required options for DHT Walnut 405GP Evaluation Board.
+
+machine evbppc powerpc
+include "conf/std" # MI standard options
+
+# standard ("mandatory") kernel options.
+options PPC_IBM4XX # IBM 40x family
+
+options IBM405_ERRATA77
+
+# Executable support:
+options EXEC_ELF32 # (native) ELF32 binary support
+options EXEC_AOUT # (native) a.out binary support (deprecated)
+options EXEC_SCRIPT # shell script support
+
+makeoptions TEXTADDR=0x100000
+makeoptions BOARDTYPE="dht"
+makeoptions PPCDIR="ibm4xx"
+makeoptions NEED_BINARY="yes"
+
+options PPC_INTR_IMPL="<powerpc/intr.h>"
+options PPC_PCI_MACHDEP_IMPL="<powerpc/pci_machdep.h>"
+options KERNBASE=0x100000
+
+options INTSTK=16384
+
+options EVBPPC_HAS_MBR
+
+include "arch/powerpc/conf/files.ibm4xx"
+include "arch/evbppc/conf/files.dht"
Index: src/sys/arch/evbppc/dht/autoconf.c
diff -u /dev/null src/sys/arch/evbppc/dht/autoconf.c:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/dht/autoconf.c Fri Apr 2 07:00:33 2021
@@ -0,0 +1,79 @@
+/* $NetBSD: autoconf.c,v 1.1 2021/04/02 07:00:33 rin Exp $ */
+
+/*
+ * Taken from src/sys/arch/evbppc/walnut/autoconf.c:
+ * NetBSD: autoconf.c,v 1.26 2021/03/30 05:14:00 rin Exp
+ */
+
+/*
+ * Copyright (C) 1995, 1996 Wolfgang Solfrank.
+ * Copyright (C) 1995, 1996 TooLs GmbH.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.1 2021/04/02 07:00:33 rin Exp $");
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <machine/dht.h>
+
+#include <powerpc/spr.h>
+#include <powerpc/ibm4xx/spr.h>
+
+#include <powerpc/ibm4xx/cpu.h>
+#include <powerpc/ibm4xx/dcr4xx.h>
+#include <powerpc/ibm4xx/dev/plbvar.h>
+
+/*
+ * Determine device configuration for a machine.
+ */
+void
+cpu_configure(void)
+{
+
+ intr_init();
+ calc_delayconst();
+
+ /* Make sure that timers run at CPU frequency */
+ mtdcr(DCR_CPC0_CR1, mfdcr(DCR_CPC0_CR1) & ~CPC0_CR1_CETE);
+
+ if (config_rootfound("plb", NULL) == NULL)
+ panic("%s: plb not configured", __func__);
+
+ genppc_cpu_configure();
+}
+
+void
+device_register(device_t dev, void *aux)
+{
+
+ ibm4xx_device_register(dev, aux, DHT_COM_FREQ);
+}
Index: src/sys/arch/evbppc/dht/locore.S
diff -u /dev/null src/sys/arch/evbppc/dht/locore.S:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/dht/locore.S Fri Apr 2 07:00:33 2021
@@ -0,0 +1,193 @@
+/* $NetBSD: locore.S,v 1.1 2021/04/02 07:00:33 rin Exp $ */
+
+/*
+ * Taken from src/sys/arch/powerpc/ibm4xx/openbios/locore.s:
+ * NetBSD: locore.S,v 1.17 2021/03/30 01:57:20 rin Exp
+ */
+
+/*
+ * Copyright 2001 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed for the NetBSD Project by
+ * Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (C) 1995, 1996 Wolfgang Solfrank.
+ * Copyright (C) 1995, 1996 TooLs GmbH.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef PPC_4XX_NOCACHE
+#error Not tested.
+#endif
+
+#include "assym.h"
+#include "ksyms.h"
+
+#ifdef _KERNEL_OPT
+#include "opt_ddb.h"
+#include "opt_modular.h"
+#include "opt_ppcparam.h"
+#endif
+
+#include <machine/param.h>
+#include <machine/asm.h>
+#include <machine/psl.h>
+#include <machine/trap.h>
+
+#include <powerpc/spr.h>
+#include <powerpc/ibm4xx/spr.h>
+
+#include <powerpc/ibm4xx/dcr4xx.h>
+
+/*
+ * This symbol is here for the benefit of kvm_mkdb, and is supposed to
+ * mark the start of kernel text.
+ */
+ .text
+ .globl _C_LABEL(kernel_text)
+_C_LABEL(kernel_text):
+
+/*
+ * Startup entry. Note, this must be the first thing in the text
+ * segment!
+ */
+ .text
+ .globl __start
+__start:
+ li %r0,0
+ mtmsr %r0 /* Disable FPU/MMU/exceptions */
+ isync
+
+ /*
+ * Errata 213: Incorrect data may be flushed from the data cache.
+ * Cores: PPC405D5X1, PPC405D5X2
+ * Workaround: #1, CCR0 modification sequence #2
+ * Note: Meaning of bits we need to set is undocumented.
+ */
+ sync
+ mfccr0 %r0
+ oris %r0,%r0,0x50000000@h
+ mtccr0 %r0
+ isync
+
+ /* PPC405GP errata, item #58.
+ * Load string instructions may write incorrect data into the last GPR
+ * targeted in the operation.
+ * Workaround: set OCM0_DSCNTL[DSEN]=0 and OCM0_DSCNTL[DOF]=0 */
+ li %r0,0
+ mtdcr DCR_OCM0_DSCNTL, %r0 /* Disable Data access to OCM */
+ mtdcr DCR_OCM0_ISCNTL, %r0 /* Disable Instruction access to OCM.
+ Just in case */
+#ifdef PPC_4XX_NOCACHE
+ /* Disable all caches for physical addresses */
+ li %r0,0
+#else
+ /* Allow cacheing for only the first 2GB of RAM */
+ lis %r0,0xffff
+#endif
+ mtdccr %r0
+ mticcr %r0
+
+ /* Invalidate all TLB entries */
+ tlbia
+ sync
+ isync
+
+ /* Get start of BSS */
+ lis %r3,_C_LABEL(_edata)-4@ha
+ addi %r3,%r3,_C_LABEL(_edata)-4@l
+ /* Get end of kernel memory */
+ lis %r8,_C_LABEL(end)@ha
+ addi %r8,%r8,_C_LABEL(end)@l
+ /* Zero BSS */
+ li %r4,0
+2: stwu %r4,4(%r3)
+ cmpw %r3,%r8
+ bne+ 2b
+
+#if NKSYMS > 0 || defined(DDB) || defined(MODULAR)
+ /*
+ * If we had symbol table location we'd store it here and would've
+ * adjusted r8 here.
+ */
+ lis %r7,_C_LABEL(startsym)@ha
+ addi %r7,%r7,_C_LABEL(startsym)@l
+ stw %r8,0(%r7)
+ lis %r7,_C_LABEL(endsym)@ha
+ addi %r7,%r7,_C_LABEL(endsym)@l
+ stw %r8,0(%r7)
+#endif
+
+ /* Set kernel MMU context. */
+ li %r0,KERNEL_PID
+ mtpid %r0
+ sync
+
+ INIT_CPUINFO(%r8,%r1,%r9,%r0)
+ mr %r4,%r8
+
+ lis %r3,__start@ha
+ addi %r3,%r3,__start@l
+
+ mr %r6,%r31 /* info_block address */
+ bl _C_LABEL(initppc)
+ bl _C_LABEL(main)
+
+loop: b loop /* XXX not reached */
+
+#include <powerpc/ibm4xx/4xx_locore.S>
Index: src/sys/arch/evbppc/dht/machdep.c
diff -u /dev/null src/sys/arch/evbppc/dht/machdep.c:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/dht/machdep.c Fri Apr 2 07:00:33 2021
@@ -0,0 +1,327 @@
+/* $NetBSD: machdep.c,v 1.1 2021/04/02 07:00:33 rin Exp $ */
+
+/*
+ * Taken from src/sys/arch/evbppc/walnut/machdep.c:
+ * NetBSD: machdep.c,v 1.67 2021/03/30 05:08:16 rin Exp
+ */
+
+/*
+ * Copyright 2001, 2002 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed for the NetBSD Project by
+ * Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (C) 1995, 1996 Wolfgang Solfrank.
+ * Copyright (C) 1995, 1996 TooLs GmbH.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.1 2021/04/02 07:00:33 rin Exp $");
+
+#include "opt_ddb.h"
+#include "opt_pci.h"
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/reboot.h>
+#include <sys/systm.h>
+
+#include <machine/dht.h>
+
+#include <powerpc/spr.h>
+#include <powerpc/ibm4xx/spr.h>
+
+#include <powerpc/ibm4xx/cpu.h>
+#include <powerpc/ibm4xx/dcr4xx.h>
+#include <powerpc/ibm4xx/ibm405gp.h>
+#include <powerpc/ibm4xx/openbios.h>
+#include <powerpc/ibm4xx/tlb.h>
+
+#include "com.h"
+#if NCOM > 0
+#include <sys/termios.h>
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+#include <powerpc/ibm4xx/dev/comopbvar.h>
+#ifndef CONADDR
+#define CONADDR IBM405GP_UART0_BASE
+#endif
+#ifndef CONSPEED
+#define CONSPEED B115200
+#endif
+#ifndef CONMODE
+#define CONMODE TTYDEF_CFLAG
+#endif
+#endif /* NCOM > 0 */
+
+#include "emac.h"
+#if NEMAC > 0
+#include <net/if_ether.h>
+#endif
+
+#include "pci.h"
+#if NPCI > 0
+#ifndef PCI_NETBSD_CONFIGURE
+#error options PCI_NETBSD_CONFIGURE is mandatory.
+#endif
+#include <powerpc/ibm4xx/pci_machdep.h>
+#include <dev/pci/pciconf.h>
+#include <dev/pci/pcivar.h>
+#endif
+
+#define TLB_PG_SIZE (16 * 1024 * 1024)
+
+static u_int memsize;
+
+void initppc(vaddr_t, vaddr_t, char *, void *);
+
+/*
+ * Get memory size from SDRAM bank register.
+ */
+static u_int
+dht_memsize(void)
+{
+ u_int total = 0;
+ uint32_t val, addr;
+
+ for (addr = DCR_SDRAM0_B0CR; addr <= DCR_SDRAM0_B3CR; addr += 4) {
+ mtdcr(DCR_SDRAM0_CFGADDR, addr);
+ val = mfdcr(DCR_SDRAM0_CFGDATA);
+ if (val & SDRAM0_BnCR_EN)
+ total += SDRAM0_BnCR_SZ(val);
+ }
+ return total;
+}
+
+void
+consinit(void)
+{
+
+#if NCOM > 0
+ com_opb_cnattach(DHT_COM_FREQ, CONADDR, CONSPEED, CONMODE);
+#endif
+}
+
+void
+initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block)
+{
+
+ /* Disable all external interrupts */
+ mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0);
+
+ memsize = dht_memsize();
+
+ /* Linear map kernel memory */
+ for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE)
+ ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
+
+ /* Map console after physmem (see pmap_tlbmiss()) */
+ ppc4xx_tlb_reserve(IBM405GP_UART0_BASE, roundup(memsize, TLB_PG_SIZE),
+ TLB_PG_SIZE, TLB_I | TLB_G);
+
+ /* Disable all timers */
+ mtspr(SPR_TCR, 0);
+
+ ibm40x_memsize_init(memsize, startkernel);
+ ibm4xx_init(startkernel, endkernel, pic_ext_intr);
+
+#ifdef DDB
+ if (boothowto & RB_KDB)
+ Debugger();
+#endif
+
+ /* Look for the ibm4xx modules in the right place */
+ module_machine = module_machine_ibm4xx;
+}
+
+void
+cpu_startup(void)
+{
+ prop_number_t pn;
+
+ ibm4xx_cpu_startup("DHT Walnut 405GP Evaluation Board");
+
+ /*
+ * Set up the board properties database.
+ */
+ board_info_init();
+
+ pn = prop_number_create_integer(DHT_CPU_FREQ);
+ KASSERT(pn != NULL);
+ if (prop_dictionary_set(board_properties, "processor-frequency", pn) ==
+ false)
+ panic("setting processor-frequency");
+ prop_object_release(pn);
+
+ pn = prop_number_create_integer(memsize);
+ KASSERT(pn != NULL);
+ if (prop_dictionary_set(board_properties, "mem-size", pn) == false)
+ panic("setting mem-size");
+ prop_object_release(pn);
+
+#if NEMAC > 0
+ /*
+ * XXX
+ * Unfortunately, no MAC address is assigned to this board.
+ * Set fake address de:ad:be:ef:00:00.
+ *
+ * XXX
+ * This should be same with what U-Boot/PPC-Boot set.
+ */
+ static uint8_t enaddr[ETHER_ADDR_LEN];
+ enaddr[0] = 0xde; enaddr[1] = 0xad; enaddr[2] = 0xbe;
+ enaddr[3] = 0xef; enaddr[4] = 0x00; enaddr[5] = 0x00;
+ prop_data_t pd = prop_data_create_data_nocopy(enaddr, ETHER_ADDR_LEN);
+ KASSERT(pd != NULL);
+ if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) ==
+ false)
+ panic("setting emac0-mac-addr");
+ prop_object_release(pd);
+#endif
+
+ /*
+ * Now that we have VM, malloc()s are OK in bus_space.
+ */
+ bus_space_mallocok();
+
+ /*
+ * No fake mapiodev.
+ */
+ fake_mapiodev = 0;
+}
+
+#if NPCI > 0
+int
+ibm4xx_pci_bus_maxdevs(void *v, int busno)
+{
+
+ return 32;
+}
+
+/*
+ * This is only possible mapping known to work b/w PCI devices and IRQ pins.
+ */
+#define DEV_TO_IRQ(dev) (27 + (dev))
+#define PARENT_DEV(swiz, dev) ((swiz) - (dev))
+
+int
+ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
+{
+ int pin = pa->pa_intrpin, bus = pa->pa_bus, dev = pa->pa_device;
+
+ if (pin <= 0 || pin > 4)
+ goto bad;
+
+ if (bus != 0) {
+ /*
+ * XXX
+ * We only support ppb(4) directly attached to pci0.
+ */
+ dev = PARENT_DEV(pa->pa_intrswiz, dev);
+ goto out;
+ }
+
+ switch (dev) {
+ case 2:
+ case 3:
+ case 4:
+out:
+ *ihp = DEV_TO_IRQ(dev);
+ return 0;
+ default:
+bad:
+ printf("%s: invalid request: bus %d dev %d pin %d\n",
+ __func__, bus, dev, pin);
+ *ihp = -1;
+ return 1;
+ }
+}
+
+void
+ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
+ int *iline)
+{
+
+ if (bus != 0) {
+ /*
+ * XXX
+ * See coment above.
+ */
+ dev = PARENT_DEV(swiz, dev);
+ goto out;
+ }
+
+ switch (dev) {
+ case 2:
+ case 3:
+ case 4:
+out:
+ *iline = DEV_TO_IRQ(dev);
+ break;
+ default:
+ printf("%s: invalid request: bus %d dev %d pin %d swiz %d\n",
+ __func__, bus, dev, pin, swiz);
+ *iline = 0;
+ break;
+ }
+}
+#endif /* NPCI > 0 */
Index: src/sys/arch/evbppc/include/dht.h
diff -u /dev/null src/sys/arch/evbppc/include/dht.h:1.1
--- /dev/null Fri Apr 2 07:00:33 2021
+++ src/sys/arch/evbppc/include/dht.h Fri Apr 2 07:00:33 2021
@@ -0,0 +1,40 @@
+/* $NetBSD: dht.h,v 1.1 2021/04/02 07:00:33 rin Exp $ */
+
+/*
+ * Copyright (c) 2021 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Rin Okuyama.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _EVBPPC_DHT_H_
+#define _EVBPPC_DHT_H_
+
+#include <dev/ic/comreg.h>
+
+#define DHT_CPU_FREQ 266666666
+#define DHT_COM_FREQ (6 * COM_FREQ)
+
+#endif /* _EVBPPC_DHT_H_ */
