/* $NetBSD: machdep.c,v 1.56 2018/07/15 05:16:43 maxv 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 1.56 2018/07/15 05:16:43 maxv Exp $");
#include "opt_compat_netbsd.h"
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/boot_flag.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <sys/exec.h>
#include <sys/kernel.h>
#include <sys/ksyms.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/module.h>
#include <sys/mount.h>
#include <sys/msgbuf.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/syscallargs.h>
#include <sys/syslog.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <prop/proplib.h>
#include <machine/powerpc.h>
#include <machine/walnut.h>
#include <powerpc/trap.h>
#include <powerpc/pcb.h>
#include <powerpc/spr.h>
#include <powerpc/ibm4xx/spr.h>
#include <powerpc/ibm4xx/cpu.h>
#include <powerpc/ibm4xx/dcr4xx.h>
#include <powerpc/ibm4xx/pci_machdep.h>
#include <powerpc/pic/picvar.h>
#include <dev/cons.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pciconf.h>
#include "ksyms.h"
#if defined(DDB)
#include <powerpc/db_machdep.h>
#include <ddb/db_extern.h>
#endif
#define TLB_PG_SIZE (16*1024*1024)
/*
* Global variables used here and there
*/
struct vm_map *phys_map = NULL;
/*
* This should probably be in autoconf! XXX
*/
char machine[] = MACHINE; /* from <machine/param.h> */
char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */
char bootpath[256];
void initppc(vaddr_t, vaddr_t, char *, void *);
static void dumpsys(void);
#define MEMREGIONS 8
struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */
struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */
struct board_cfg_data board_data;
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);
/* Initialize cache info for memcpy, etc. */
cpu_probe_cache();
/* Save info block */
memcpy(&board_data, info_block, sizeof(board_data));
memset(physmemr, 0, sizeof physmemr);
memset(availmemr, 0, sizeof availmemr);
physmemr[0].start = 0;
physmemr[0].size = board_data.mem_size & ~PGOFSET;
/* Lower memory reserved by eval board BIOS */
availmemr[0].start = startkernel;
availmemr[0].size = board_data.mem_size - availmemr[0].start;
/* 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(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE),
TLB_PG_SIZE, TLB_I | TLB_G);
mtspr(SPR_TCR, 0); /* disable all timers */
ibm4xx_init(startkernel, endkernel, pic_ext_intr);
#ifdef DEBUG
printf("Board config data:\n");
printf(" usr_config_ver = %s\n", board_data.usr_config_ver);
printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver);
printf(" mem_size = %u\n", board_data.mem_size);
printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n",
board_data.mac_address_local[0], board_data.mac_address_local[1],
board_data.mac_address_local[2], board_data.mac_address_local[3],
board_data.mac_address_local[4], board_data.mac_address_local[5]);
printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n",
board_data.mac_address_pci[0], board_data.mac_address_pci[1],
board_data.mac_address_pci[2], board_data.mac_address_pci[3],
board_data.mac_address_pci[4], board_data.mac_address_pci[5]);
printf(" processor_speed = %u\n", board_data.processor_speed);
printf(" plb_speed = %u\n", board_data.plb_speed);
printf(" pci_speed = %u\n", board_data.pci_speed);
#endif
#ifdef DDB
if (boothowto & RB_KDB)
Debugger();
#endif
/*
* Look for the ibm4xx modules in the right place.
*/
module_machine = module_machine_ibm4xx;
}
/*
* Machine dependent startup code.
*/
void
cpu_startup(void)
{
vaddr_t minaddr, maxaddr;
prop_number_t pn;
prop_data_t pd;
char pbuf[9];
/*
* Initialize error message buffer (at end of core).
*/
#if 0 /* For some reason this fails... --Artem
* Besides, do we really have to put it at the end of core?
* Let's use static buffer for now
*/
if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0,
UVM_KMF_VAONLY)))
panic("startup: no room for message buffer");
for (i = 0; i < btoc(MSGBUFSIZE); i++)
pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE,
msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0);
initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE));
#else
initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE));
#endif
printf("%s%s", copyright, version);
printf("Walnut PowerPC 405GP Evaluation Board\n");
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
minaddr = 0;
/*
* Allocate a submap for physio
*/
phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, 0, false, NULL);
/*
* No need to allocate an mbuf cluster submap. Mbuf clusters
* are allocated via the pool allocator, and we use direct-mapped
* pool pages.
*/
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
printf("avail memory = %s\n", pbuf);
/*
* Set up the board properties dictionary.
*/
board_properties = prop_dictionary_create();
KASSERT(board_properties != NULL);
pn = prop_number_create_integer(board_data.mem_size);
KASSERT(pn != NULL);
if (prop_dictionary_set(board_properties, "mem-size", pn) == false)
panic("setting mem-size");
prop_object_release(pn);
pd = prop_data_create_data_nocopy(board_data.mac_address_local,
sizeof(board_data.mac_address_local));
KASSERT(pd != NULL);
if (prop_dictionary_set(board_properties, "emac0-mac-addr",
pd) == false)
panic("setting emac0-mac-addr");
prop_object_release(pd);
pd = prop_data_create_data_nocopy(board_data.mac_address_pci,
sizeof(board_data.mac_address_pci));
KASSERT(pd != NULL);
if (prop_dictionary_set(board_properties, "sip0-mac-addr",
pd) == false)
panic("setting sip0-mac-addr");
prop_object_release(pd);
pn = prop_number_create_integer(board_data.processor_speed);
KASSERT(pn != NULL);
if (prop_dictionary_set(board_properties, "processor-frequency",
pn) == false)
panic("setting processor-frequency");
prop_object_release(pn);
/*
* Now that we have VM, malloc()s are OK in bus_space.
*/
bus_space_mallocok();
fake_mapiodev = 0;
}
static void
dumpsys(void)
{
printf("dumpsys: TBD\n");
}
/*
* Halt or reboot the machine after syncing/dumping according to howto.
*/
void
cpu_reboot(int howto, char *what)
{
static int syncing;
static char str[256];
char *ap = str, *ap1 = ap;
boothowto = howto;
if (!cold && !(howto & RB_NOSYNC) && !syncing) {
syncing = 1;
vfs_shutdown(); /* sync */
resettodr(); /* set wall clock */
}
splhigh();
if (!cold && (howto & RB_DUMP))
dumpsys();
doshutdownhooks();
pmf_system_shutdown(boothowto);
if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
/* Power off here if we know how...*/
}
if (howto & RB_HALT) {
printf("halted\n\n");
goto reboot; /* XXX for now... */
#ifdef DDB
printf("dropping to debugger\n");
while(1)
Debugger();
#endif
}
printf("rebooting\n\n");
if (what && *what) {
if (strlen(what) > sizeof str - 5)
printf("boot string too large, ignored\n");
else {
strcpy(str, what);
ap1 = ap = str + strlen(str);
*ap++ = ' ';
}
}
*ap++ = '-';
if (howto & RB_SINGLE)
*ap++ = 's';
if (howto & RB_KDB)
*ap++ = 'd';
*ap++ = 0;
if (ap[-2] == '-')
*ap1 = 0;
/* flush cache for msgbuf */
__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
reboot:
ppc4xx_reset();
printf("ppc4xx_reset() failed!\n");
#ifdef DDB
while(1)
Debugger();
#else
while (1)
/* nothing */;
#endif
}
void
mem_regions(struct mem_region **mem, struct mem_region **avail)
{
*mem = physmemr;
*avail = availmemr;
}
int
ibm4xx_pci_bus_maxdevs(void *v, int busno)
{
/*
* Bus number is irrelevant. Configuration Mechanism 1 is in
* use, can have devices 0-32 (i.e. the `normal' range).
*/
return 5;
}
int
ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
int pin = pa->pa_intrpin;
int dev = pa->pa_device;
if (pin == 0)
/* No IRQ used. */
goto bad;
if (pin > 4) {
printf("%s: bad interrupt pin %d\n", __func__, pin);
goto bad;
}
/*
* We need to map the interrupt pin to the interrupt bit in the UIC
* associated with it. This is highly machine-dependent.
*/
switch(dev) {
case 1:
case 2:
case 3:
case 4:
*ihp = 27 + dev;
break;
default:
printf("Hmm.. PCI device %d should not exist on this board\n",
dev);
goto bad;
}
return 0;
bad:
*ihp = -1;
return 1;
}
void
ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
int *iline)
{
if (bus == 0) {
switch(dev) {
case 1:
case 2:
case 3:
case 4:
*iline = 31 - dev;
}
} else
*iline = 20 + ((swiz + dev + 1) & 3);
}