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[unleashed.git] / usr / src / uts / sun4u / os / fillsysinfo.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/errno.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/cpu.h>
#include <sys/cpuvar.h>
#include <sys/clock.h>

#include <sys/promif.h>
#include <sys/promimpl.h>
#include <sys/systm.h>
#include <sys/machsystm.h>
#include <sys/debug.h>
#include <sys/sunddi.h>
#include <sys/modctl.h>
#include <sys/spitregs.h>
#include <sys/cheetahregs.h>
#include <sys/cpu_module.h>
#include <sys/kobj.h>
#include <sys/cmp.h>
#include <sys/async.h>
#include <vm/page.h>

/*
 * The OpenBoot Standalone Interface supplies the kernel with
 * implementation dependent parameters through the devinfo/property mechanism
 */
typedef enum { XDRBOOL, XDRINT, XDRSTRING } xdrs;

/*
 * structure describing properties that we are interested in querying the
 * OBP for.
 */
struct getprop_info {
        char    *name;
        xdrs    type;
        uint_t  *var;
};

/*
 * structure used to convert between a string returned by the OBP & a type
 * used within the kernel. We prefer to paramaterize rather than type.
 */
struct convert_info {
        char    *name;
        uint_t  var;
        char    *realname;
};

/*
 * structure describing nodes that we are interested in querying the OBP for
 * properties.
 */
struct node_info {
        char                    *name;
        int                     size;
        struct getprop_info     *prop;
        struct getprop_info     *prop_end;
        unsigned int            *value;
};

/*
 * macro definitions for routines that form the OBP interface
 */
#define NEXT                    prom_nextnode
#define CHILD                   prom_childnode
#define GETPROP                 prom_getprop
#define GETPROPLEN              prom_getproplen


/* 0=quiet; 1=verbose; 2=debug */
int     debug_fillsysinfo = 0;
#define VPRINTF if (debug_fillsysinfo) prom_printf

int ncpunode;
struct cpu_node cpunodes[NCPU];

static void     check_cpus_ver(void);
static void     check_cpus_set(void);
static void fill_address(pnode_t, char *);
void    fill_cpu(pnode_t);
void    fill_cpu_ddi(dev_info_t *);
void    empty_cpu(int);
void    plat_fill_mc(pnode_t);
#pragma weak plat_fill_mc

uint64_t        system_clock_freq;

/*
 * list of well known devices that must be mapped, and the variables that
 * contain their addresses.
 */
caddr_t         v_auxio_addr = NULL;
caddr_t         v_eeprom_addr = NULL;
caddr_t         v_timecheck_addr = NULL;
caddr_t         v_rtc_addr_reg = NULL;
volatile unsigned char  *v_rtc_data_reg = NULL;
volatile uint8_t        *v_pmc_addr_reg = NULL;
volatile uint8_t        *v_pmc_data_reg = NULL;

int             niobus = 0;
uint_t          niommu_tsbs = 0;

/*
 * Hardware watchdog support.
 */
#define CHOSEN_EEPROM   "eeprom"
#define WATCHDOG_ENABLE "watchdog-enable"
static pnode_t          chosen_eeprom;

/*
 * Appropriate tod module will be dynamically selected while booting
 * based on finding a device tree node with a "device_type" property value
 * of "tod". If such a node describing tod is not found, for backward
 * compatibility, a node with a "name" property value of "eeprom" and
 * "model" property value of "mk48t59" will be used. Failing to find a
 * node matching either of the above criteria will result in no tod module
 * being selected; this will cause the boot process to halt.
 */
char    *tod_module_name;

/*
 * If this variable is non-zero, cpr should return "not supported" when
 * it is queried even though it would normally be supported on this platform.
 */
int cpr_supported_override;

/*
 * Some platforms may need to support CPR even in the absence of the
 * energystar-v* property (Enchilada server, for example).  If this
 * variable is non-zero, cpr should proceed even in the absence
 * of the energystar-v* property.
 */
int cpr_platform_enable = 0;

/*
 * Some nodes have functions that need to be called when they're seen.
 */
static void     have_sbus(pnode_t);
static void     have_pci(pnode_t);
static void     have_eeprom(pnode_t);
static void     have_auxio(pnode_t);
static void     have_rtc(pnode_t);
static void     have_tod(pnode_t);
static void     have_pmc(pnode_t);

static struct wkdevice {
        char *wk_namep;
        void (*wk_func)(pnode_t);
        caddr_t *wk_vaddrp;
        ushort_t wk_flags;
#define V_OPTIONAL      0x0000
#define V_MUSTHAVE      0x0001
#define V_MAPPED        0x0002
#define V_MULTI         0x0003  /* optional, may be more than one */
} wkdevice[] = {
        { "sbus", have_sbus, NULL, V_MULTI },
        { "pci", have_pci, NULL, V_MULTI },
        { "eeprom", have_eeprom, NULL, V_MULTI },
        { "auxio", have_auxio, NULL, V_OPTIONAL },
        { "rtc", have_rtc, NULL, V_OPTIONAL },
        { "pmc", have_pmc, NULL, V_OPTIONAL },
        { 0, },
};

static void map_wellknown(pnode_t);

void
map_wellknown_devices()
{
        struct wkdevice *wkp;
        phandle_t       ieeprom;
        pnode_t root;
        uint_t  stick_freq;

        /*
         * if there is a chosen eeprom, note it (for have_eeprom())
         */
        if (GETPROPLEN(prom_chosennode(), CHOSEN_EEPROM) ==
            sizeof (phandle_t) &&
            GETPROP(prom_chosennode(), CHOSEN_EEPROM, (caddr_t)&ieeprom) != -1)
                chosen_eeprom = (pnode_t)prom_decode_int(ieeprom);

        root = prom_nextnode((pnode_t)0);
        /*
         * Get System clock frequency from root node if it exists.
         */
        if (GETPROP(root, "stick-frequency", (caddr_t)&stick_freq) != -1)
                system_clock_freq = stick_freq;

        map_wellknown(NEXT((pnode_t)0));

        /*
         * See if it worked
         */
        for (wkp = wkdevice; wkp->wk_namep; ++wkp) {
                if (wkp->wk_flags == V_MUSTHAVE) {
                        cmn_err(CE_PANIC, "map_wellknown_devices: required "
                            "device %s not mapped", wkp->wk_namep);
                }
        }

        /*
         * all sun4u systems must have an IO bus, i.e. sbus or pcibus
         */
        if (niobus == 0)
                cmn_err(CE_PANIC, "map_wellknown_devices: no i/o bus node");

        check_cpus_ver();
        check_cpus_set();
}

/*
 * map_wellknown - map known devices & registers
 */
static void
map_wellknown(pnode_t curnode)
{
        extern int status_okay(int, char *, int);
        char tmp_name[MAXSYSNAME];
        int sok;

#ifdef VPRINTF
        VPRINTF("map_wellknown(%x)\n", curnode);
#endif /* VPRINTF */

        for (curnode = CHILD(curnode); curnode; curnode = NEXT(curnode)) {
                /*
                 * prune subtree if status property indicating not okay
                 */
                sok = status_okay((int)curnode, (char *)NULL, 0);
                if (!sok) {
                        char devtype_buf[OBP_MAXPROPNAME];
                        int size;

#ifdef VPRINTF
                        VPRINTF("map_wellknown: !okay status property\n");
#endif /* VPRINTF */
                        /*
                         * a status property indicating bad memory will be
                         * associated with a node which has a "device_type"
                         * property with a value of "memory-controller"
                         */
                        if ((size = GETPROPLEN(curnode,
                            OBP_DEVICETYPE)) == -1)
                                continue;
                        if (size > OBP_MAXPROPNAME) {
                                cmn_err(CE_CONT, "node %x '%s' prop too "
                                    "big\n", curnode, OBP_DEVICETYPE);
                                continue;
                        }
                        if (GETPROP(curnode, OBP_DEVICETYPE,
                            devtype_buf) == -1) {
                                cmn_err(CE_CONT, "node %x '%s' get failed\n",
                                    curnode, OBP_DEVICETYPE);
                                continue;
                        }
                        if (strcmp(devtype_buf, "memory-controller") != 0)
                                continue;
                        /*
                         * ...else fall thru and process the node...
                         */
                }
                bzero(tmp_name, MAXSYSNAME);
                if (GETPROP(curnode, OBP_NAME, (caddr_t)tmp_name) != -1)
                        fill_address(curnode, tmp_name);
                if (GETPROP(curnode, OBP_DEVICETYPE, tmp_name) != -1 &&
                    strcmp(tmp_name, "cpu") == 0) {
                        fill_cpu(curnode);
                }
                if (strcmp(tmp_name, "tod") == 0)
                        have_tod(curnode);
                if (sok && (strcmp(tmp_name, "memory-controller") == 0) &&
                    (&plat_fill_mc != NULL))
                        plat_fill_mc(curnode);
                map_wellknown(curnode);
        }
}

static void
fill_address(pnode_t curnode, char *namep)
{
        struct wkdevice *wkp;
        int size;
        uint32_t vaddr;

        for (wkp = wkdevice; wkp->wk_namep; ++wkp) {
                if (strcmp(wkp->wk_namep, namep) != 0)
                        continue;
                if (wkp->wk_flags == V_MAPPED)
                        return;
                if (wkp->wk_vaddrp != NULL) {
                        if ((size = GETPROPLEN(curnode, OBP_ADDRESS)) == -1) {
                                cmn_err(CE_CONT, "device %s size %d\n",
                                    namep, size);
                                continue;
                        }
                        if (size != sizeof (vaddr)) {
                                cmn_err(CE_CONT, "device %s address prop too "
                                    "big\n", namep);
                                continue;
                        }
                        if (GETPROP(curnode, OBP_ADDRESS,
                            (caddr_t)&vaddr) == -1) {
                                cmn_err(CE_CONT, "device %s not mapped\n",
                                    namep);
                                continue;
                        }

                        /* make into a native pointer */
                        *wkp->wk_vaddrp = (caddr_t)(uintptr_t)vaddr;
#ifdef VPRINTF
                        VPRINTF("fill_address: %s mapped to %p\n", namep,
                            (void *)*wkp->wk_vaddrp);
#endif /* VPRINTF */
                }
                if (wkp->wk_func != NULL)
                        (*wkp->wk_func)(curnode);
                /*
                 * If this one is optional and there may be more than
                 * one, don't set V_MAPPED, which would cause us to skip it
                 * next time around
                 */
                if (wkp->wk_flags != V_MULTI)
                        wkp->wk_flags = V_MAPPED;
        }
}

int
get_portid(pnode_t node, pnode_t *cmpp)
{
        int portid;
        int i;
        char dev_type[OBP_MAXPROPNAME];
        pnode_t cpu_parent;

        if (cmpp != NULL)
                *cmpp = OBP_NONODE;

        if (GETPROP(node, "portid", (caddr_t)&portid) != -1)
                return (portid);
        if (GETPROP(node, "upa-portid", (caddr_t)&portid) != -1)
                return (portid);
        if (GETPROP(node, "device_type", (caddr_t)&dev_type) == -1)
                return (-1);

        /*
         * For a virtual cpu node that is a CMP core, the "portid"
         * is in the parent node.
         * For a virtual cpu node that is a CMT strand, the "portid" is
         * in its grandparent node.
         * So we iterate up as far as 2 levels to get the "portid".
         */
        if (strcmp(dev_type, "cpu") == 0) {
                cpu_parent = node = prom_parentnode(node);
                for (i = 0; i < 2; i++) {
                        if (node == OBP_NONODE || node == OBP_BADNODE)
                                break;
                        if (GETPROP(node, "portid", (caddr_t)&portid) != -1) {
                                if (cmpp != NULL)
                                        *cmpp = cpu_parent;
                                return (portid);
                        }
                        node = prom_parentnode(node);
                }
        }

        return (-1);
}

/*
 * Adjust page coloring variables based on the physical ecache setsize of
 * the configured cpus:
 *
 * Set ecache_setsize to max ecache set size to be used by
 * page_coloring_init() to determine the page colors to configure.
 * The adjustment is unlikely to be necessary... For cheetah+ systems,
 * ecache_setsize should already be set in cpu_fiximp() to the maximum
 * possible ecache setsize of any supported cheetah+ cpus. The adjustment
 * is for the off chance that a non-cheetah+ system may have heterogenous
 * cpus.
 *
 * Set cpu_setsize to the actual cpu setsize if the setsize is homogenous
 * across all cpus otherwise set it to -1 if heterogenous.
 *
 * Set cpu_page_colors to -1 to signify heterogeneity of ecache setsizes
 * to the page_get routines.
 */
static void
adj_ecache_setsize(int ecsetsize)
{
        if (ecsetsize > ecache_setsize)
                ecache_setsize = ecsetsize;

        switch (cpu_setsize) {
        case -1:
                break;
        case 0:
                cpu_setsize = ecsetsize;
                break;
        default:
                /* set to -1 if hetergenous cpus */
                if (cpu_setsize != ecsetsize) {
                        if (do_pg_coloring)
                                cpu_page_colors = -1;
                        /*
                         * if page coloring disabled, cpu_page_colors should
                         * remain 0 to prevent page coloring processing.
                         */
                        cpu_setsize = -1;
                }
                break;
        }
}

void
fill_cpu(pnode_t node)
{
        extern int cpu_get_cpu_unum(int, char *, int, int *);
        struct cpu_node *cpunode;
        processorid_t cpuid;
        int portid;
        int tlbsize;
        int size;
        uint_t clk_freq;
        pnode_t cmpnode;
        char namebuf[OBP_MAXPROPNAME], unum[UNUM_NAMLEN];
        char *namebufp;
        int proplen;

        if ((portid = get_portid(node, &cmpnode)) == -1) {
                cmn_err(CE_PANIC, "portid not found");
        }

        if (GETPROP(node, "cpuid", (caddr_t)&cpuid) == -1) {
                cpuid = portid;
        }

        if (cpuid < 0 || cpuid >= NCPU) {
                cmn_err(CE_PANIC, "cpu node %x: cpuid %d out of range", node,
                    cpuid);
                return;
        }

        cpunode = &cpunodes[cpuid];
        cpunode->portid = portid;
        cpunode->nodeid = node;

        if (cpu_get_cpu_unum(cpuid, unum, UNUM_NAMLEN, &size) != 0) {
                cpunode->fru_fmri[0] = '\0';
        } else {
                (void) snprintf(cpunode->fru_fmri, sizeof (cpunode->fru_fmri),
                    "%s%s", CPU_FRU_FMRI, unum);
        }

        if (cmpnode) {
                /*
                 * For the CMT case, the parent "core" node contains
                 * properties needed below, use it instead of the
                 * cpu node.
                 */
                if ((GETPROP(cmpnode, "device_type", namebuf) > 0) &&
                    (strcmp(namebuf, "core") == 0)) {
                        node = cmpnode;
                }
        }

        (void) GETPROP(node, (cmpnode ? "compatible" : "name"), namebuf);

        /* Make sure CPU name is within boundary and NULL terminated */
        proplen = GETPROPLEN(node, (cmpnode ? "compatible" : "name"));
        ASSERT(proplen > 0 && proplen <= OBP_MAXPROPNAME);

        if (proplen >= OBP_MAXPROPNAME)
                proplen = OBP_MAXPROPNAME - 1;

        namebuf[proplen] = '\0';

        namebufp = namebuf;
        if (strncmp(namebufp, "SUNW,", 5) == 0)
                namebufp += 5;
        else if (strncmp(namebufp, "FJSV,", 5) == 0)
                namebufp += 5;
        (void) strcpy(cpunode->name, namebufp);

        (void) GETPROP(node, "implementation#",
            (caddr_t)&cpunode->implementation);
        (void) GETPROP(node, "mask#", (caddr_t)&cpunode->version);

        if (IS_CHEETAH(cpunode->implementation)) {
                /* remap mask reg */
                cpunode->version = REMAP_CHEETAH_MASK(cpunode->version);
        }
        if (GETPROP(node, "clock-frequency", (caddr_t)&clk_freq) == -1) {
                /*
                 * If we didn't find it in the CPU node, look in the root node.
                 */
                pnode_t root = prom_nextnode((pnode_t)0);
                if (GETPROP(root, "clock-frequency", (caddr_t)&clk_freq) == -1)
                        clk_freq = 0;
        }
        cpunode->clock_freq = clk_freq;

        ASSERT(cpunode->clock_freq != 0);
        /*
         * Compute scaling factor based on rate of %tick. This is used
         * to convert from ticks derived from %tick to nanoseconds. See
         * comment in sun4u/sys/clock.h for details.
         */
        cpunode->tick_nsec_scale = (uint_t)(((uint64_t)NANOSEC <<
            (32 - TICK_NSEC_SHIFT)) / cpunode->clock_freq);

        (void) GETPROP(node, "#itlb-entries", (caddr_t)&tlbsize);
        ASSERT(tlbsize < USHRT_MAX); /* since we cast it */
        cpunode->itlb_size = (ushort_t)tlbsize;

        (void) GETPROP(node, "#dtlb-entries", (caddr_t)&tlbsize);
        ASSERT(tlbsize < USHRT_MAX); /* since we cast it */
        cpunode->dtlb_size = (ushort_t)tlbsize;

        if (cmpnode != OBP_NONODE) {
                /*
                 * If the CPU has a level 3 cache, then it will be the
                 * external cache. Otherwise the level 2 cache is the
                 * external cache.
                 */
                size = 0;
                (void) GETPROP(node, "l3-cache-size", (caddr_t)&size);
                if (size <= 0)
                        (void) GETPROP(node, "l2-cache-size", (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_size = size;

                size = 0;
                (void) GETPROP(node, "l3-cache-line-size", (caddr_t)&size);
                if (size <= 0)
                        (void) GETPROP(node, "l2-cache-line-size",
                            (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_linesize = size;

                size = 0;
                (void) GETPROP(node, "l2-cache-associativity", (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_associativity = size;

                cmp_add_cpu(portid, cpuid);
        } else {
                size = 0;
                (void) GETPROP(node, "ecache-size", (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_size = size;

                size = 0;
                (void) GETPROP(node, "ecache-line-size", (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_linesize = size;

                size = 0;
                (void) GETPROP(node, "ecache-associativity", (caddr_t)&size);
                ASSERT(size != 0);
                cpunode->ecache_associativity = size;
        }

        /* by default set msram to non-mirrored one */
        cpunode->msram = ECACHE_CPU_NON_MIRROR;

        if (GETPROPLEN(node, "msram") != -1) {
                cpunode->msram = ECACHE_CPU_MIRROR;
        }

        if (GETPROPLEN(node, "msram-observed") != -1) {
                cpunode->msram = ECACHE_CPU_MIRROR;
        }

        if (ncpunode == 0) {
                cpu_fiximp(node);
        }

        cpunode->ecache_setsize =
            cpunode->ecache_size / cpunode->ecache_associativity;

        adj_ecache_setsize(cpunode->ecache_setsize);

        ncpunode++;
}

int
get_portid_ddi(dev_info_t *dip, dev_info_t **cmpp)
{
        int portid;
        int i;
        char dev_type[OBP_MAXPROPNAME];
        int len = OBP_MAXPROPNAME;
        dev_info_t *cpu_parent;

        if (cmpp != NULL)
                *cmpp = NULL;

        if ((portid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "portid", -1)) != -1)
                return (portid);
        if ((portid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "upa-portid", -1)) != -1)
                return (portid);
        if (ddi_prop_op(DDI_DEV_T_ANY, dip, PROP_LEN_AND_VAL_BUF,
            DDI_PROP_DONTPASS, "device_type", (caddr_t)dev_type,
            &len) != 0)
                return (-1);

        /*
         * For a virtual cpu node that is a CMP core, the "portid"
         * is in the parent node.
         * For a virtual cpu node that is a CMT strand, the "portid" is
         * in its grandparent node.
         * So we iterate up as far as 2 levels to get the "portid".
         */
        if (strcmp(dev_type, "cpu") == 0) {
                cpu_parent = dip = ddi_get_parent(dip);
                for (i = 0; dip != NULL && i < 2; i++) {
                        if ((portid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
                            DDI_PROP_DONTPASS, "portid", -1)) != -1) {
                                if (cmpp != NULL)
                                        *cmpp = cpu_parent;
                                return (portid);
                        }
                        dip = ddi_get_parent(dip);
                }
        }

        return (-1);
}

/*
 * A hotplug version of fill_cpu().  (Doesn't assume that there's a node
 * in the PROM device tree for this CPU.)  We still need the PROM version
 * since it is called very early in the boot cycle before (before
 * setup_ddi()).  Sigh...someday this will all be cleaned up.
 */
void
fill_cpu_ddi(dev_info_t *dip)
{
        extern int cpu_get_cpu_unum(int, char *, int, int *);
        struct cpu_node *cpunode;
        processorid_t cpuid;
        int portid;
        int len = OBP_MAXPROPNAME;
        int tlbsize;
        dev_info_t *cmpnode;
        char namebuf[OBP_MAXPROPNAME], unum[UNUM_NAMLEN];
        char *namebufp;
        char dev_type[OBP_MAXPROPNAME];

        if ((portid = get_portid_ddi(dip, &cmpnode)) == -1) {
                cmn_err(CE_PANIC, "portid not found");
        }

        if ((cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "cpuid", -1)) == -1) {
                cpuid = portid;
        }

        if (cpuid < 0 || cpuid >= NCPU) {
                cmn_err(CE_PANIC, "cpu dip %p: cpuid %d out of range",
                    (void *)dip, cpuid);
                return;
        }

        cpunode = &cpunodes[cpuid];
        cpunode->portid = portid;
        cpunode->nodeid = ddi_get_nodeid(dip);

        if (cmpnode != NULL) {
                /*
                 * For the CMT case, the parent "core" node contains
                 * properties needed below, use it instead of the
                 * cpu node.
                 */
                if ((ddi_prop_op(DDI_DEV_T_ANY, cmpnode, PROP_LEN_AND_VAL_BUF,
                    DDI_PROP_DONTPASS, "device_type",
                    (caddr_t)dev_type, &len) == DDI_PROP_SUCCESS) &&
                    (strcmp(dev_type, "core") == 0))
                        dip = cmpnode;
        }

        if (cpu_get_cpu_unum(cpuid, unum, UNUM_NAMLEN, &len) != 0) {
                cpunode->fru_fmri[0] = '\0';
        } else {
                (void) snprintf(cpunode->fru_fmri, sizeof (cpunode->fru_fmri),
                    "%s%s", CPU_FRU_FMRI, unum);
        }

        len = sizeof (namebuf);
        (void) ddi_prop_op(DDI_DEV_T_ANY, dip, PROP_LEN_AND_VAL_BUF,
            DDI_PROP_DONTPASS, (cmpnode ? "compatible" : "name"),
            (caddr_t)namebuf, &len);

        namebufp = namebuf;
        if (strncmp(namebufp, "SUNW,", 5) == 0)
                namebufp += 5;
        else if (strncmp(namebufp, "FJSV,", 5) == 0)
                namebufp += 5;
        (void) strcpy(cpunode->name, namebufp);

        cpunode->implementation = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "implementation#", 0);

        cpunode->version = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "mask#", 0);

        if (IS_CHEETAH(cpunode->implementation)) {
                /* remap mask reg */
                cpunode->version = REMAP_CHEETAH_MASK(cpunode->version);
        }

        cpunode->clock_freq = (uint32_t)ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "clock-frequency", 0);

        ASSERT(cpunode->clock_freq != 0);
        /*
         * Compute scaling factor based on rate of %tick. This is used
         * to convert from ticks derived from %tick to nanoseconds. See
         * comment in sun4u/sys/clock.h for details.
         */
        cpunode->tick_nsec_scale = (uint_t)(((uint64_t)NANOSEC <<
            (32 - TICK_NSEC_SHIFT)) / cpunode->clock_freq);

        tlbsize = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "#itlb-entries", 0);
        ASSERT(tlbsize < USHRT_MAX); /* since we cast it */
        cpunode->itlb_size = (ushort_t)tlbsize;

        tlbsize = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
            DDI_PROP_DONTPASS, "#dtlb-entries", 0);
        ASSERT(tlbsize < USHRT_MAX); /* since we cast it */
        cpunode->dtlb_size = (ushort_t)tlbsize;

        if (cmpnode != NULL) {
                /*
                 * If the CPU has a level 3 cache, then that is it's
                 * external cache. Otherwise the external cache must
                 * be the level 2 cache.
                 */
                cpunode->ecache_size = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "l3-cache-size", 0);
                if (cpunode->ecache_size == 0)
                        cpunode->ecache_size = ddi_prop_get_int(DDI_DEV_T_ANY,
                            dip, DDI_PROP_DONTPASS, "l2-cache-size", 0);
                ASSERT(cpunode->ecache_size != 0);

                cpunode->ecache_linesize = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "l3-cache-line-size", 0);
                if (cpunode->ecache_linesize == 0)
                        cpunode->ecache_linesize =
                            ddi_prop_get_int(DDI_DEV_T_ANY, dip,
                            DDI_PROP_DONTPASS, "l2-cache-line-size", 0);
                ASSERT(cpunode->ecache_linesize != 0);

                cpunode->ecache_associativity = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "l2-cache-associativity", 0);
                ASSERT(cpunode->ecache_associativity != 0);

                cmp_add_cpu(portid, cpuid);
        } else {
                cpunode->ecache_size = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "ecache-size", 0);
                ASSERT(cpunode->ecache_size != 0);

                cpunode->ecache_linesize = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "ecache-line-size", 0);
                ASSERT(cpunode->ecache_linesize != 0);

                cpunode->ecache_associativity = ddi_prop_get_int(DDI_DEV_T_ANY,
                    dip, DDI_PROP_DONTPASS, "ecache-associativity", 0);
                ASSERT(cpunode->ecache_associativity != 0);
        }

        /* by default set msram to non-mirrored one */
        cpunode->msram = ECACHE_CPU_NON_MIRROR;

        if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "msram")) {
                cpunode->msram = ECACHE_CPU_MIRROR;
        } else if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
            "msram-observed")) {
                cpunode->msram = ECACHE_CPU_MIRROR;
        }

        ASSERT(ncpunode > 0);   /* fiximp not req'd */

        cpunode->ecache_setsize =
            cpunode->ecache_size / cpunode->ecache_associativity;

        adj_ecache_setsize(cpunode->ecache_setsize);

        ncpunode++;
}

void
empty_cpu(int cpuid)
{
        bzero(&cpunodes[cpuid], sizeof (struct cpu_node));
        ncpunode--;
}

#ifdef SF_ERRATA_30 /* call causes fp-disabled */
int spitfire_call_bug = 0;
#endif
#ifdef SF_V9_TABLE_28   /* fp over/underflow traps may cause wrong fsr.cexc */
int spitfire_bb_fsr_bug = 0;
#endif

#ifdef JALAPENO_ERRATA_85
/*
 * Set the values here assuming we're running 2.4 or later Jalapenos.  If
 * not, they'll be reset below.  Either way, the default can be overridden
 * when we read /etc/system later in boot.
 */
int jp_errata_85_allow_slow_scrub = 1;
int jp_errata_85_enable = 0;
#endif  /* JALAPENO_ERRATA_85 */

static void
check_cpus_ver(void)
{
        int i;
        int impl, cpuid = getprocessorid();
        int min_supported_rev;

        ASSERT(cpunodes[cpuid].nodeid != 0);

        impl = cpunodes[cpuid].implementation;
        switch (impl) {
        default:
                min_supported_rev = 0;
                break;
        case SPITFIRE_IMPL:
                min_supported_rev = SPITFIRE_MINREV_SUPPORTED;
                break;
        case CHEETAH_IMPL:
                min_supported_rev = CHEETAH_MINREV_SUPPORTED;
                break;
        }

        for (i = 0; i < NCPU; i++) {
                if (cpunodes[i].nodeid == 0)
                        continue;

                if (IS_SPITFIRE(impl)) {
                        if (cpunodes[i].version < min_supported_rev) {
                                cmn_err(CE_PANIC, "UltraSPARC versions older "
                                    "than %d.%d are no longer supported "
                                    "(cpu #%d)",
                                    SPITFIRE_MAJOR_VERSION(min_supported_rev),
                                    SPITFIRE_MINOR_VERSION(min_supported_rev),
                                    i);
                        }

                        /*
                         * Min supported rev is 2.1 but we've seen problems
                         * with that so we still want to warn if we see one.
                         */
                        if (cpunodes[i].version < 0x22) {
                                cmn_err(CE_WARN,
                                "UltraSPARC versions older than "
                                "2.2 are not supported (cpu #%d)", i);
#ifdef SF_ERRATA_30 /* call causes fp-disabled */
                                spitfire_call_bug = 1;
#endif /* SF_ERRATA_30 */
                        }
                }


#ifdef SF_V9_TABLE_28   /* fp over/underflow traps may cause wrong fsr.cexc */
                if (IS_SPITFIRE(impl) || IS_BLACKBIRD(impl))
                        spitfire_bb_fsr_bug = 1;
#endif /* SF_V9_TABLE_28 */

                if (IS_CHEETAH(impl)) {
                        if (cpunodes[i].version < min_supported_rev) {
                                cmn_err(CE_PANIC, "UltraSPARC-III versions "
                                    "older than %d.%d are no longer supported "
                                    "(cpu #%d)",
                                    CHEETAH_MAJOR_VERSION(min_supported_rev),
                                    CHEETAH_MINOR_VERSION(min_supported_rev),
                                    i);
                        }

                }

#ifdef JALAPENO_ERRATA_85
                if (IS_JALAPENO(impl) && (cpunodes[i].version < 0x24)) {
                        jp_errata_85_allow_slow_scrub = 0;
                        jp_errata_85_enable = 1;
                }
#endif /* JALAPENO_ERRATA_85 */
        }
}

/*
 * Check for a legal set of CPUs.
 */
static void
check_cpus_set(void)
{
        int i;
        int impl;
        int npanther = 0;
        int njupiter = 0;

        impl = cpunodes[getprocessorid()].implementation;

        switch (impl) {
        case CHEETAH_PLUS_IMPL:
        case JAGUAR_IMPL:
        case PANTHER_IMPL:
                /*
                 * Check for a legal heterogeneous set of CPUs.
                 */
                for (i = 0; i < NCPU; i++) {
                        if (cpunodes[i].nodeid == 0)
                                continue;

                        if (IS_PANTHER(cpunodes[i].implementation)) {
                                npanther += 1;
                        }

                        if (!(IS_CHEETAH_PLUS(cpunodes[i].implementation) ||
                            IS_JAGUAR(cpunodes[i].implementation) ||
                            IS_PANTHER(cpunodes[i].implementation))) {
                                use_mp = 0;
                                break;
                        }
                }
                break;
        case OLYMPUS_C_IMPL:
        case JUPITER_IMPL:
                /*
                 * Check for a legal heterogeneous set of CPUs on the
                 * OPL platform.
                 */
                for (i = 0; i < NCPU; i++) {
                        if (cpunodes[i].nodeid == 0)
                                continue;

                        if (IS_JUPITER(cpunodes[i].implementation)) {
                                njupiter += 1;
                        }
                        if (!(IS_OLYMPUS_C(cpunodes[i].implementation) ||
                            IS_JUPITER(cpunodes[i].implementation))) {
                                use_mp = 0;
                                break;
                        }
                }
                break;
        default:
                /*
                 * Check for a homogeneous set of CPUs.
                 */
                for (i = 0; i < NCPU; i++) {
                        if (cpunodes[i].nodeid == 0)
                                continue;

                        if (cpunodes[i].implementation != impl) {
                                use_mp = 0;
                                break;
                        }
                }
                break;
        }

        /*
         * Change from mmu_page_sizes from 4 to 6 for totally-Panther domains,
         * where npanther == ncpunode. Also, set ecache_alignsize (and a few
         * other globals) to the correct value for totally-Panther domains.
         */
        if (&mmu_init_mmu_page_sizes) {
                (void) mmu_init_mmu_page_sizes(npanther);
        }
        if ((npanther == ncpunode) && (&cpu_fix_allpanther)) {
                cpu_fix_allpanther();
        }

        /*
         * For all-Jupiter domains the cpu module will update the hwcap features
         * for integer multiply-add instruction support.
         */
        if ((njupiter == ncpunode) && (&cpu_fix_alljupiter)) {
                cpu_fix_alljupiter();
        }

        /*
         * Set max cpus we can have based on ncpunode and use_mp
         */
        if (use_mp) {
                int (*set_max_ncpus)(void);

                set_max_ncpus = (int (*)(void))
                    kobj_getsymvalue("set_platform_max_ncpus", 0);

                if (set_max_ncpus) {
                        max_ncpus = set_max_ncpus();
                        if (max_ncpus < ncpunode)
                                max_ncpus = ncpunode;
                        boot_ncpus = boot_max_ncpus = ncpunode;
                } else {
                        max_ncpus = ncpunode;
                }
        } else {
                cmn_err(CE_NOTE, "MP not supported on mismatched modules,"
                    " booting UP only");

                for (i = 0; i < NCPU; i++) {
                        if (cpunodes[i].nodeid == 0)
                                continue;

                        cmn_err(CE_NOTE, "cpu%d: %s version 0x%x", i,
                            cpunodes[i].name, cpunodes[i].version);
                }

                max_ncpus = 1;
        }
}

/*
 * The first sysio must always programmed up for the system clock and error
 * handling purposes, referenced by v_sysio_addr in machdep.c.
 */
static void
have_sbus(pnode_t node)
{
        int size;
        uint_t portid;

        size = GETPROPLEN(node, "upa-portid");
        if (size == -1 || size > sizeof (portid))
                cmn_err(CE_PANIC, "upa-portid size");
        if (GETPROP(node, "upa-portid", (caddr_t)&portid) == -1)
                cmn_err(CE_PANIC, "upa-portid");

        niobus++;

        /*
         * need one physical TSB
         */
        niommu_tsbs++;
}


#define IOMMU_PER_SCHIZO        2

/*
 * The first psycho must always programmed up for the system clock and error
 * handling purposes.
 */
static void
have_pci(pnode_t node)
{
        int size;
        uint_t portid;
        char compatible[OBP_MAXDRVNAME];

        size = GETPROPLEN(node, "portid");
        if (size == -1) size = GETPROPLEN(node, "upa-portid");
        if (size == -1)
                return;
        if (size > sizeof (portid))
                cmn_err(CE_PANIC, "portid size wrong");

        if (GETPROP(node, "portid", (caddr_t)&portid) == -1)
                if (GETPROP(node, "upa-portid", (caddr_t)&portid) == -1)
                        cmn_err(CE_PANIC, "portid not found");

        niobus++;


        /*
         * Need two physical TSBs for Schizo compatible nodes,
         * one otherwise.
         */
        compatible[0] = '\0';
        (void) prom_getprop(node, OBP_COMPATIBLE, compatible);
        if (strcmp(compatible, "pci108e,8001") == 0)
                niommu_tsbs += IOMMU_PER_SCHIZO;
        else
                niommu_tsbs++;
}

/*
 * The first eeprom is used as the TOD clock, referenced
 * by v_eeprom_addr in locore.s.
 */
static void
have_eeprom(pnode_t node)
{
        int size;
        uint32_t eaddr;

        /*
         * "todmostek" module will be selected based on finding a "model"
         * property value of "mk48t59" in the "eeprom" node.
         */
        if (tod_module_name == NULL) {
                char buf[MAXSYSNAME];

                if ((GETPROP(node, "model", buf) != -1) &&
                    (strcmp(buf, "mk48t59") == 0))
                        tod_module_name = "todmostek";
        }

        /*
         * If we have found two distinct eeprom's, then we're done.
         */
        if (v_eeprom_addr && v_timecheck_addr != v_eeprom_addr)
                return;

        /*
         * multiple eeproms may exist but at least
         * one must have an "address" property
         */
        if ((size = GETPROPLEN(node, OBP_ADDRESS)) == -1)
                return;
        if (size != sizeof (eaddr))
                cmn_err(CE_PANIC, "eeprom addr size");
        if (GETPROP(node, OBP_ADDRESS, (caddr_t)&eaddr) == -1)
                cmn_err(CE_PANIC, "eeprom addr");

        /*
         * If we have a chosen eeprom and it is not this node, keep looking.
         */
        if (chosen_eeprom != NULL && chosen_eeprom != node) {
                v_timecheck_addr = (caddr_t)(uintptr_t)eaddr;
                return;
        }

        v_eeprom_addr = (caddr_t)(uintptr_t)eaddr;

        /*
         * If we don't find an I/O board to use to check the clock,
         * we'll fall back on whichever TOD is available.
         */
        if (v_timecheck_addr == NULL)
                v_timecheck_addr = v_eeprom_addr;

        /*
         * Does this eeprom have watchdog support?
         */
        if (GETPROPLEN(node, WATCHDOG_ENABLE) != -1)
                watchdog_available = 1;
}

static void
have_rtc(pnode_t node)
{
        int size;
        uint32_t eaddr;

        /*
         * "ds1287" module will be selected based on finding a "model"
         * property value of "ds1287" in the "rtc" node.
         */
        if (tod_module_name == NULL) {
                char buf[MAXSYSNAME];

                if (GETPROP(node, "model", buf) != -1) {
                        if ((strcmp(buf, "m5819p") == 0) ||
                            (strcmp(buf, "m5823") == 0))
                                tod_module_name = "todm5823";
                        else if (strcmp(buf, "ds1287") == 0)
                                tod_module_name = "todds1287";
                }
        }

        /*
         * XXX - drives on if address prop doesn't exist, later falls
         * over in tod module
         */
        if ((size = GETPROPLEN(node, OBP_ADDRESS)) == -1)
                return;
        if (size != sizeof (eaddr))
                cmn_err(CE_PANIC, "rtc addr size");
        if (GETPROP(node, OBP_ADDRESS, (caddr_t)&eaddr) == -1)
                cmn_err(CE_PANIC, "rtc addr");

        v_rtc_addr_reg = (caddr_t)(uintptr_t)eaddr;
        v_rtc_data_reg = (volatile unsigned char *)(uintptr_t)eaddr + 1;

        /*
         * Does this rtc have watchdog support?
         */
        if (GETPROPLEN(node, WATCHDOG_ENABLE) != -1)
                watchdog_available = 1;
}

static void
have_pmc(pnode_t node)
{
        uint32_t vaddr;
        pnode_t root;

        /*
         * Watchdog property is in the root node.
         */
        root = prom_nextnode((pnode_t)0);
        if (GETPROPLEN(root, WATCHDOG_ENABLE) != -1) {
                /*
                 * The hardware watchdog timer resides within logical
                 * unit 8 of SuperI/O. The address property of the node
                 * contains the virtual address that we use to program
                 * the timer.
                 */
                if (GETPROP(node, OBP_ADDRESS, (caddr_t)&vaddr) == -1) {
                        watchdog_available = 0;
                        return;
                }
                v_pmc_addr_reg = (volatile uint8_t *)(uintptr_t)vaddr;
                v_pmc_data_reg = (volatile uint8_t *)(uintptr_t)vaddr + 1;
                watchdog_available = 1;
        }
}

static void
have_auxio(pnode_t node)
{
        size_t size, n;
        uint32_t addr[5];

        /*
         * Get the size of the auzio's address property.
         * On some platforms, the address property contains one
         * entry and on others it contains five entries.
         * In all cases, the first entries are compatible.
         *
         * This routine gets the address property for the auxio
         * node and stores the first entry in v_auxio_addr which
         * is used by the routine set_auxioreg in sun4u/ml/locore.s.
         */
        if ((size = GETPROPLEN(node, OBP_ADDRESS)) == -1)
                cmn_err(CE_PANIC, "no auxio address property");

        switch (n = (size / sizeof (addr[0]))) {
        case 1:
                break;
        case 5:
                break;
        default:
                cmn_err(CE_PANIC, "auxio addr has %lu entries?", n);
        }

        if (GETPROP(node, OBP_ADDRESS, (caddr_t)addr) == -1)
                cmn_err(CE_PANIC, "auxio addr");

        v_auxio_addr = (caddr_t)(uintptr_t)(addr[0]); /* make into pointer */
}

static void
have_tod(pnode_t node)
{
        static char tod_name[MAXSYSNAME];

        if (GETPROP(node, OBP_NAME, (caddr_t)tod_name) == -1)
                cmn_err(CE_PANIC, "tod name");
        /*
         * This is a node with "device_type" property value of "tod".
         * Name of the tod module is the name from the node.
         */
        tod_module_name = tod_name;
}