void
sbus_type3_pcmcia_intr_reinstall()
{
u_int16_t r = _reg_read_2(SBUS_PCMCIA3_TIMR_REG16);
_reg_write_2(SBUS_PCMCIA3_TIMR_REG16, 1);
_reg_write_2(SBUS_PCMCIA3_TIMR_REG16, r);
}
int
smap_intr(void *arg)
{
struct smap_softc *sc = arg;
struct ifnet *ifp;
u_int16_t cause, disable, r;
cause = _reg_read_2(SPD_INTR_STATUS_REG16) &
_reg_read_2(SPD_INTR_ENABLE_REG16);
disable = cause & (SPD_INTR_RXDNV | SPD_INTR_TXDNV);
if (disable) {
r = _reg_read_2(SPD_INTR_ENABLE_REG16);
r &= ~disable;
_reg_write_2(SPD_INTR_ENABLE_REG16, r);
printf("%s: invalid descriptor. (%c%c)\n", DEVNAME,
disable & SPD_INTR_RXDNV ? 'R' : '_',
disable & SPD_INTR_TXDNV ? 'T' : '_');
if (disable & SPD_INTR_RXDNV)
smap_rxeof(arg);
_reg_write_2(SPD_INTR_CLEAR_REG16, disable);
}
if (cause & SPD_INTR_TXEND) {
_reg_write_2(SPD_INTR_CLEAR_REG16, SPD_INTR_TXEND);
if (_reg_read_1(SMAP_RXFIFO_FRAME_REG8) > 0)
cause |= SPD_INTR_RXEND;
smap_txeof(arg);
}
if (cause & SPD_INTR_RXEND) {
_reg_write_2(SPD_INTR_CLEAR_REG16, SPD_INTR_RXEND);
smap_rxeof(arg);
if (sc->tx_desc_cnt > 0 &&
sc->tx_desc_cnt > _reg_read_1(SMAP_TXFIFO_FRAME_REG8))
smap_txeof(arg);
}
if (cause & SPD_INTR_EMAC3)
emac3_intr(arg);
/* if transmission is pending, start here */
ifp = &sc->ethercom.ec_if;
if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
smap_start(ifp);
#if NRND > 0
rnd_add_uint32(&sc->rnd_source, cause | sc->tx_fifo_ptr << 16);
#endif
return (1);
}
void
sh_rtc_set(void *cookie, struct clock_ymdhms *dt)
{
uint8_t r;
/* stop clock */
r = _reg_read_1(SH_(RCR2));
r |= SH_RCR2_RESET;
r &= ~SH_RCR2_START;
_reg_write_1(SH_(RCR2), r);
/* set time */
if (CPU_IS_SH3)
_reg_write_1(SH3_RYRCNT, TOBCD(dt->dt_year % 100));
else
_reg_write_2(SH4_RYRCNT, TOBCD(dt->dt_year % 100));
#define RTCSET(x, y) _reg_write_1(SH_(R ## x ## CNT), TOBCD(dt->dt_ ## y))
RTCSET(MON, mon);
RTCSET(WK, wday);
RTCSET(DAY, day);
RTCSET(HR, hour);
RTCSET(MIN, min);
RTCSET(SEC, sec);
#undef RTCSET
/* start clock */
_reg_write_1(SH_(RCR2), r | SH_RCR2_START);
}
/* SCPH-18000 */
void
sbus_type2_pcmcia_intr_clear()
{
if (_reg_read_2(SBUS_PCMCIA_CSC1_REG16) & 0x080)
_reg_write_2(SBUS_PCMCIA_CSC1_REG16, 0xffff);
}
void
cpu_exit(struct proc *p)
{
if (p->p_md.md_flags & MDP_STEP)
_reg_write_2(SH_(BBRB), 0);
pmap_deactivate(p);
sched_exit(p);
}
void
__wdc_spd_disable()
{
u_int16_t r;
r = _reg_read_2(SPD_INTR_ENABLE_REG16);
r &= ~SPD_INTR_HDD;
_reg_write_2(SPD_INTR_ENABLE_REG16, r);
}
/*
* Prepare context switch from oproc to nproc.
* This code is used by cpu_switchto.
*/
void
cpu_switch_prepare(struct proc *oproc, struct proc *nproc)
{
nproc->p_stat = SONPROC;
if (oproc && (oproc->p_md.md_flags & MDP_STEP))
_reg_write_2(SH_(BBRB), 0);
curpcb = nproc->p_md.md_pcb;
pmap_activate(nproc);
if (nproc->p_md.md_flags & MDP_STEP) {
int pm_asid = nproc->p_vmspace->vm_map.pmap->pm_asid;
_reg_write_2(SH_(BBRB), 0);
_reg_write_4(SH_(BARB), nproc->p_md.md_regs->tf_spc);
_reg_write_1(SH_(BASRB), pm_asid);
_reg_write_1(SH_(BAMRB), 0);
_reg_write_2(SH_(BRCR), 0x0040);
_reg_write_2(SH_(BBRB), 0x0014);
}
curproc = nproc;
}
// INTC
void
SH4dev::icu_dump()
{
#define ON(x, c) ((x) & (c) ? check[1] : check[0])
#define _(n) DPRINTF((TEXT("%S %S "), #n, ON(r, SH4_ICR_ ## n)))
static const char *check[] = { "[_]", "[x]" };
u_int16_t r;
super::icu_dump_priority(_ipr_table);
r = _reg_read_2(SH4_ICR);
DPRINTF((TEXT("ICR: ")));
_(NMIL);
_(MAI);
_(NMIB);
_(NMIE);
_(IRLM);
DPRINTF((TEXT("0x%04x\n"), r));
#if 0 // monitoring SH4 interrupt request.
// disable SH3 internal devices interrupt.
suspendIntr();
_reg_write_2(SH4_IPRA, 0);
_reg_write_2(SH4_IPRB, 0);
_reg_write_2(SH4_IPRC, 0);
// _reg_write_2(SH4_IPRD, 0); SH7709S only.
resumeIntr(0); // all interrupts enable.
while (1) {
DPRINTF((TEXT("%04x ", _reg_read_2(HD64465_NIRR))));
bitdisp(_reg_read_4(SH4_INTEVT));
}
/* NOTREACHED */
#endif
#undef _
#undef ON
}
void
SH4dev::mq100_dump()
{
u_int32_t a, e;
int i;
// This is HPW650PA test. 640 * 480 linebytes 1280.
DPRINTF((TEXT("<<<MQ100/HD64464>>>\n")));
a = MQ100_FB_BASE + 0x4b000;
e = a + 640 * 480 * sizeof(u_int16_t);
while (a < e) {
for (i = 0; i < 640; i++, a += sizeof(u_int16_t))
_reg_write_2(a, ~_reg_read_2(a) & 0xffff);
}
}
int
smap_init(struct ifnet *ifp)
{
struct smap_softc *sc = ifp->if_softc;
u_int16_t r16;
int rc;
smap_fifo_init(sc);
emac3_reset(&sc->emac3);
smap_desc_init(sc);
_reg_write_2(SPD_INTR_CLEAR_REG16, SPD_INTR_RXEND | SPD_INTR_TXEND |
SPD_INTR_RXDNV);
emac3_intr_clear();
r16 = _reg_read_2(SPD_INTR_ENABLE_REG16);
r16 |= SPD_INTR_EMAC3 | SPD_INTR_RXEND | SPD_INTR_TXEND |
SPD_INTR_RXDNV;
_reg_write_2(SPD_INTR_ENABLE_REG16, r16);
emac3_intr_enable();
emac3_enable();
/* Program the multicast filter, if necessary. */
emac3_setmulti(&sc->emac3, &sc->ethercom);
/* Set current media. */
if ((rc = mii_mediachg(&sc->emac3.mii)) == ENXIO)
rc = 0;
else if (rc != 0)
return rc;
ifp->if_flags |= IFF_RUNNING;
return (0);
}
void
intc_intr(int ssr, int spc, int ssp)
{
struct intc_intrhand *ih;
int evtcode;
u_int16_t r;
evtcode = _reg_read_4(CPU_IS_SH3 ? SH7709_INTEVT2 : SH4_INTEVT);
ih = EVTCODE_IH(evtcode);
KDASSERT(ih->ih_func);
/*
* On entry, all interrrupts are disabled,
* and exception is enabled for P3 access. (kernel stack is P3,
* SH3 may or may not cause TLB miss when access stack.)
* Enable higher level interrupt here.
*/
r = _reg_read_2(HD6446X_NIRR);
splx(ih->ih_level);
if (evtcode == SH_INTEVT_TMU0_TUNI0) {
struct clockframe cf;
cf.spc = spc;
cf.ssr = ssr;
cf.ssp = ssp;
(*ih->ih_func)(&cf);
__dbg_heart_beat(HEART_BEAT_RED);
} else if (evtcode ==
(CPU_IS_SH3 ? SH7709_INTEVT2_IRQ4 : SH_INTEVT_IRL11)) {
int cause = r & hd6446x_ienable;
struct hd6446x_intrhand *hh = &hd6446x_intrhand[ffs(cause) - 1];
if (cause == 0) {
printf("masked HD6446x interrupt.0x%04x\n", r);
_reg_write_2(HD6446X_NIRR, 0x0000);
return;
}
/* Enable higher level interrupt*/
hd6446x_intr_resume(hh->hh_ipl);
KDASSERT(hh->hh_func != NULL);
(*hh->hh_func)(hh->hh_arg);
__dbg_heart_beat(HEART_BEAT_GREEN);
} else {
(*ih->ih_func)(ih->ih_arg);
__dbg_heart_beat(HEART_BEAT_BLUE);
}
}
void
sbus_type2_pcmcia_intr_enable()
{
_reg_write_2(SBUS_PCMCIA_TIMR_REG16, 0);
}
void
smap_start(struct ifnet *ifp)
{
struct smap_softc *sc = ifp->if_softc;
struct smap_desc *d;
struct mbuf *m0, *m;
u_int8_t *p, *q;
u_int32_t *r;
int i, sz, pktsz;
u_int16_t fifop;
u_int16_t r16;
KDASSERT(ifp->if_flags & IFF_RUNNING);
FUNC_ENTER();
while (1) {
IFQ_POLL(&ifp->if_snd, m0);
if (m0 == NULL)
goto end;
pktsz = m0->m_pkthdr.len;
KDASSERT(pktsz <= ETHER_MAX_LEN - ETHER_CRC_LEN);
sz = ROUND4(pktsz);
if (sz > sc->tx_buf_freesize ||
sc->tx_desc_cnt >= SMAP_DESC_MAX ||
emac3_tx_done() != 0) {
ifp->if_flags |= IFF_OACTIVE;
goto end;
}
IFQ_DEQUEUE(&ifp->if_snd, m0);
KDASSERT(m0 != NULL);
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m0);
p = (u_int8_t *)sc->tx_buf;
q = p + sz;
/* copy to temporary buffer area */
for (m = m0; m != 0; m = m->m_next) {
memcpy(p, mtod(m, void *), m->m_len);
p += m->m_len;
}
m_freem(m0);
/* zero padding area */
for (; p < q; p++)
*p = 0;
/* put to FIFO */
fifop = sc->tx_fifo_ptr;
KDASSERT((fifop & 3) == 0);
_reg_write_2(SMAP_TXFIFO_PTR_REG16, fifop);
sc->tx_fifo_ptr = (fifop + sz) & 0xfff;
r = sc->tx_buf;
for (i = 0; i < sz; i += sizeof(u_int32_t))
*(volatile u_int32_t *)SMAP_TXFIFO_DATA_REG = *r++;
_wbflush();
/* put FIFO to EMAC3 */
d = &sc->tx_desc[sc->tx_start_index];
KDASSERT((d->stat & SMAP_TXDESC_READY) == 0);
d->sz = pktsz;
d->ptr = fifop + SMAP_TXBUF_BASE;
d->stat = SMAP_TXDESC_READY | SMAP_TXDESC_GENFCS |
SMAP_TXDESC_GENPAD;
_wbflush();
sc->tx_buf_freesize -= sz;
sc->tx_desc_cnt++;
sc->tx_start_index = (sc->tx_start_index + 1) & 0x3f;
_reg_write_1(SMAP_TXFIFO_FRAME_INC_REG8, 1);
emac3_tx_kick();
r16 = _reg_read_2(SPD_INTR_ENABLE_REG16);
if ((r16 & SPD_INTR_TXDNV) == 0) {
r16 |= SPD_INTR_TXDNV;
_reg_write_2(SPD_INTR_ENABLE_REG16, r16);
}
}
end:
/* set watchdog timer */
ifp->if_timer = 5;
FUNC_EXIT();
}
void
smap_rxeof(void *arg)
{
struct smap_softc *sc = arg;
struct smap_desc *d;
struct ifnet *ifp = &sc->ethercom.ec_if;
struct mbuf *m;
u_int16_t r16, stat;
u_int32_t *p;
int i, j, sz, rxsz, cnt;
FUNC_ENTER();
i = sc->rx_done_index;
for (cnt = 0;; cnt++, i = (i + 1) & 0x3f) {
m = NULL;
d = &sc->rx_desc[i];
stat = d->stat;
if ((stat & SMAP_RXDESC_EMPTY) != 0) {
break;
} else if (stat & 0x7fff) {
ifp->if_ierrors++;
goto next_packet;
}
sz = d->sz;
rxsz = ROUND4(sz);
KDASSERT(sz >= ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN);
KDASSERT(sz <= ETHER_MAX_LEN);
/* load data from FIFO */
_reg_write_2(SMAP_RXFIFO_PTR_REG16, d->ptr & 0x3ffc);
p = sc->rx_buf;
for (j = 0; j < rxsz; j += sizeof(u_int32_t)) {
*p++ = _reg_read_4(SMAP_RXFIFO_DATA_REG);
}
/* put to mbuf */
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
printf("%s: unable to allocate Rx mbuf\n", DEVNAME);
ifp->if_ierrors++;
goto next_packet;
}
if (sz > (MHLEN - 2)) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
printf("%s: unable to allocate Rx cluster\n",
DEVNAME);
m_freem(m);
m = NULL;
ifp->if_ierrors++;
goto next_packet;
}
}
m->m_data += 2; /* for alignment */
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = sz;
memcpy(mtod(m, void *), (void *)sc->rx_buf, sz);
next_packet:
ifp->if_ipackets++;
_reg_write_1(SMAP_RXFIFO_FRAME_DEC_REG8, 1);
/* free descriptor */
d->sz = 0;
d->ptr = 0;
d->stat = SMAP_RXDESC_EMPTY;
_wbflush();
if (m != NULL) {
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
(*ifp->if_input)(ifp, m);
}
}
sc->rx_done_index = i;
r16 = _reg_read_2(SPD_INTR_ENABLE_REG16);
if (((r16 & SPD_INTR_RXDNV) == 0) && cnt > 0) {
r16 |= SPD_INTR_RXDNV;
_reg_write_2(SPD_INTR_ENABLE_REG16, r16);
}
FUNC_EXIT();
}
void
smap_attach(struct device *parent, struct device *self, void *aux)
{
struct spd_attach_args *spa = aux;
struct smap_softc *sc = (void *)self;
struct emac3_softc *emac3 = &sc->emac3;
struct ifnet *ifp = &sc->ethercom.ec_if;
struct mii_data *mii = &emac3->mii;
void *txbuf, *rxbuf;
u_int16_t r;
#ifdef SMAP_DEBUG
__sc = sc;
#endif
printf(": %s\n", spa->spa_product_name);
/* SPD EEPROM */
if (smap_get_eaddr(sc, emac3->eaddr) != 0)
return;
printf("%s: Ethernet address %s\n", DEVNAME,
ether_sprintf(emac3->eaddr));
/* disable interrupts */
r = _reg_read_2(SPD_INTR_ENABLE_REG16);
r &= ~(SPD_INTR_RXEND | SPD_INTR_TXEND | SPD_INTR_RXDNV |
SPD_INTR_EMAC3);
_reg_write_2(SPD_INTR_ENABLE_REG16, r);
emac3_intr_disable();
/* clear pending interrupts */
_reg_write_2(SPD_INTR_CLEAR_REG16, SPD_INTR_RXEND | SPD_INTR_TXEND |
SPD_INTR_RXDNV);
emac3_intr_clear();
/* buffer descriptor mode */
_reg_write_1(SMAP_DESC_MODE_REG8, 0);
if (smap_fifo_init(sc) != 0)
return;
if (emac3_init(&sc->emac3) != 0)
return;
emac3_intr_disable();
emac3_disable();
smap_desc_init(sc);
/* allocate temporary buffer */
txbuf = malloc(ETHER_MAX_LEN - ETHER_CRC_LEN + SMAP_FIFO_ALIGN + 16,
M_DEVBUF, M_NOWAIT);
if (txbuf == NULL) {
printf("%s: no memory.\n", DEVNAME);
return;
}
rxbuf = malloc(ETHER_MAX_LEN + SMAP_FIFO_ALIGN + 16,
M_DEVBUF, M_NOWAIT);
if (rxbuf == NULL) {
printf("%s: no memory.\n", DEVNAME);
free(txbuf, M_DEVBUF);
return;
}
sc->tx_buf = (u_int32_t *)ROUND16((vaddr_t)txbuf);
sc->rx_buf = (u_int32_t *)ROUND16((vaddr_t)rxbuf);
/*
* setup MI layer
*/
strcpy(ifp->if_xname, DEVNAME);
ifp->if_softc = sc;
ifp->if_start = smap_start;
ifp->if_ioctl = smap_ioctl;
ifp->if_init = smap_init;
ifp->if_stop = smap_stop;
ifp->if_watchdog= smap_watchdog;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS |
IFF_MULTICAST;
IFQ_SET_READY(&ifp->if_snd);
/* ifmedia setup. */
mii->mii_ifp = ifp;
mii->mii_readreg = emac3_phy_readreg;
mii->mii_writereg = emac3_phy_writereg;
mii->mii_statchg = emac3_phy_statchg;
sc->ethercom.ec_mii = mii;
ifmedia_init(&mii->mii_media, 0, ether_mediachange, ether_mediastatus);
mii_attach(&emac3->dev, mii, 0xffffffff, MII_PHY_ANY,
MII_OFFSET_ANY, 0);
/* Choose a default media. */
if (LIST_FIRST(&mii->mii_phys) == NULL) {
ifmedia_add(&mii->mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_NONE);
} else {
ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_AUTO);
}
if_attach(ifp);
ether_ifattach(ifp, emac3->eaddr);
spd_intr_establish(SPD_NIC, smap_intr, sc);
#if NRND > 0
rnd_attach_source(&sc->rnd_source, DEVNAME,
RND_TYPE_NET, RND_FLAG_DEFAULT);
#endif
}
void
sh_clock_init(int flags, struct rtc_ops *rtc)
{
uint32_t s, t0, cnt_1s;
sh_clock.flags = flags;
if (rtc != NULL)
sh_clock.rtc = *rtc; /* structure copy */
/* Initialize TMU */
_reg_write_2(SH_(TCR0), 0);
_reg_write_2(SH_(TCR1), 0);
_reg_write_2(SH_(TCR2), 0);
/* Reset RTC alarm and interrupt */
_reg_write_1(SH_(RCR1), 0);
/* Stop all counter */
_reg_write_1(SH_(TSTR), 0);
/*
* Estimate CPU clock.
*/
if (sh_clock.flags & SH_CLOCK_NORTC) {
/* Set TMU channel 0 source to PCLOCK / 16 */
_reg_write_2(SH_(TCR0), TCR_TPSC_P16);
sh_clock.tmuclk = sh_clock.pclock / 16;
} else {
/* Set TMU channel 0 source to RTC counter clock (16.384kHz) */
_reg_write_2(SH_(TCR0),
CPU_IS_SH3 ? SH3_TCR_TPSC_RTC : SH4_TCR_TPSC_RTC);
sh_clock.tmuclk = SH_RTC_CLOCK;
/* Make sure RTC oscillator is enabled */
_reg_bset_1(SH_(RCR2), SH_RCR2_ENABLE);
}
s = _cpu_exception_suspend();
_cpu_spin(1); /* load function on cache. */
TMU_START(0);
_cpu_spin(10000000);
t0 = TMU_ELAPSED(0);
_cpu_exception_resume(s);
sh_clock.cpucycle_1us = (sh_clock.tmuclk * 10) / t0;
cnt_1s = ((uint64_t)sh_clock.tmuclk * 10000000 * 10 + t0 / 2) / t0;
if (CPU_IS_SH4)
sh_clock.cpuclock = cnt_1s / 2; /* two-issue */
else
sh_clock.cpuclock = cnt_1s;
/*
* Estimate PCLOCK
*/
if (sh_clock.pclock == 0) {
uint32_t t1;
/* set TMU channel 1 source to PCLOCK / 4 */
_reg_write_2(SH_(TCR1), TCR_TPSC_P4);
s = _cpu_exception_suspend();
_cpu_spin(1); /* load function on cache. */
TMU_START(0);
TMU_START(1);
_cpu_spin(cnt_1s); /* 1 sec. */
t0 = TMU_ELAPSED(0);
t1 = TMU_ELAPSED(1);
_cpu_exception_resume(s);
sh_clock.pclock =
((uint64_t)t1 * 4 * SH_RTC_CLOCK + t0 / 2) / t0;
}
/* Stop all counters */
_reg_write_1(SH_(TSTR), 0);
#undef TMU_START
#undef TMU_ELAPSED
}
void
InitializeBsc(void)
{
/*
* Drive RAS,CAS in stand by mode and bus release mode
* Area0 = Normal memory, Area5,6=Normal(no burst)
* Area2 = Normal memory, Area3 = SDRAM, Area5 = Normal memory
* Area4 = Normal Memory
* Area6 = Normal memory
*/
_reg_write_4(SH4_BCR1, BSC_BCR1_VAL);
/*
* Bus Width
* Area4: Bus width = 16bit
* Area6,5 = 16bit
* Area1 = 8bit
* Area2,3: Bus width = 32bit
*/
_reg_write_2(SH4_BCR2, BSC_BCR2_VAL);
#if defined(SH4) && defined(SH7751R)
if (cpu_product == CPU_PRODUCT_7751R) {
#ifdef BSC_BCR3_VAL
_reg_write_2(SH4_BCR3, BSC_BCR3_VAL);
#endif
#ifdef BSC_BCR4_VAL
_reg_write_4(SH4_BCR4, BSC_BCR4_VAL);
#endif
}
#endif /* SH4 && SH7751R */
/*
* Idle cycle number in transition area and read to write
* Area6 = 3, Area5 = 3, Area4 = 3, Area3 = 3, Area2 = 3
* Area1 = 3, Area0 = 3
*/
_reg_write_4(SH4_WCR1, BSC_WCR1_VAL);
/*
* Wait cycle
* Area 6 = 6
* Area 5 = 2
* Area 4 = 10
* Area 3 = 3
* Area 2,1 = 3
* Area 0 = 6
*/
_reg_write_4(SH4_WCR2, BSC_WCR2_VAL);
#ifdef BSC_WCR3_VAL
_reg_write_4(SH4_WCR3, BSC_WCR3_VAL);
#endif
/*
* RAS pre-charge = 2cycle, RAS-CAS delay = 3 cycle,
* write pre-charge=1cycle
* CAS before RAS refresh RAS assert time = 3 cycle
* Disable burst, Bus size=32bit, Column Address=10bit, Refresh ON
* CAS before RAS refresh ON, EDO DRAM
*/
_reg_write_4(SH4_MCR, BSC_MCR_VAL);
#ifdef BSC_SDMR2_VAL
_reg_write_1(BSC_SDMR2_VAL, 0);
#endif
#ifdef BSC_SDMR3_VAL
_reg_write_1(BSC_SDMR3_VAL, 0);
#endif /* BSC_SDMR3_VAL */
/*
* PCMCIA Control Register
* OE/WE assert delay 3.5 cycle
* OE/WE negate-address delay 3.5 cycle
*/
#ifdef BSC_PCR_VAL
_reg_write_2(SH4_PCR, BSC_PCR_VAL);
#endif
/*
* Refresh Timer Control/Status Register
* Disable interrupt by CMF, closk 1/16, Disable OVF interrupt
* Count Limit = 1024
* In following statement, the reason why high byte = 0xa5(a4 in RFCR)
* is the rule of SH3 in writing these register.
*/
_reg_write_2(SH4_RTCSR, BSC_RTCSR_VAL);
/*
* Refresh Timer Counter
* Initialize to 0
*/
#ifdef BSC_RTCNT_VAL
_reg_write_2(SH4_RTCNT, BSC_RTCNT_VAL);
#endif
/* set Refresh Time Constant Register */
_reg_write_2(SH4_RTCOR, BSC_RTCOR_VAL);
/* init Refresh Count Register */
#ifdef BSC_RFCR_VAL
_reg_write_2(SH4_RFCR, BSC_RFCR_VAL);
#endif
/*
* Clock Pulse Generator
*/
/* Set Clock mode (make internal clock double speed) */
_reg_write_2(SH4_FRQCR, FRQCR_VAL);
}
/*
* Start the clock interrupt.
*/
void
cpu_initclocks()
{
if (sh_clock.pclock == 0)
panic("No PCLOCK information.");
/* Set global variables. */
hz = HZ;
tick = 1000000 / hz;
/*
* Use TMU channel 0 as hard clock
*/
_reg_bclr_1(SH_(TSTR), TSTR_STR0);
if (sh_clock.flags & SH_CLOCK_NORTC) {
/* use PCLOCK/16 as TMU0 source */
_reg_write_2(SH_(TCR0), TCR_UNIE | TCR_TPSC_P16);
} else {
/* use RTC clock as TMU0 source */
_reg_write_2(SH_(TCR0), TCR_UNIE |
(CPU_IS_SH3 ? SH3_TCR_TPSC_RTC : SH4_TCR_TPSC_RTC));
}
sh_clock.hz_cnt = sh_clock.tmuclk / hz - 1;
_reg_write_4(SH_(TCOR0), sh_clock.hz_cnt);
_reg_write_4(SH_(TCNT0), sh_clock.hz_cnt);
intc_intr_establish(SH_INTEVT_TMU0_TUNI0, IST_LEVEL, IPL_CLOCK,
CPU_IS_SH3 ? sh3_clock_intr : sh4_clock_intr, NULL, "clock");
/* start hardclock */
_reg_bset_1(SH_(TSTR), TSTR_STR0);
/*
* TMU channel 1 is one shot timer for soft interrupts.
*/
_reg_write_2(SH_(TCR1), TCR_UNIE | TCR_TPSC_P4);
_reg_write_4(SH_(TCOR1), 0xffffffff);
/*
* TMU channel 2 is freerunning counter for timecounter.
*/
_reg_write_2(SH_(TCR2), TCR_TPSC_P4);
_reg_write_4(SH_(TCOR2), 0xffffffff);
/*
* Start and initialize timecounter.
*/
_reg_bset_1(SH_(TSTR), TSTR_STR2);
sh_clock.tc.tc_get_timecount = sh_timecounter_get;
sh_clock.tc.tc_frequency = sh_clock.pclock / 4;
sh_clock.tc.tc_name = "tmu_pclock_4";
sh_clock.tc.tc_quality = 100;
sh_clock.tc.tc_counter_mask = 0xffffffff;
tc_init(&sh_clock.tc);
/* Make sure to start RTC */
if (sh_clock.rtc.init != NULL)
sh_clock.rtc.init(sh_clock.rtc._cookie);
}
void
sbus_type3_pcmcia_intr_disable()
{
_reg_write_2(SBUS_PCMCIA3_TIMR_REG16, 1);
}
void
sh_cpu_init(int arch, int product)
{
/* CPU type */
cpu_arch = arch;
cpu_product = product;
#if defined(SH3) && defined(SH4)
/* Set register addresses */
sh_devreg_init();
#endif
/* Cache access ops. */
sh_cache_init();
/* MMU access ops. */
sh_mmu_init();
/* Hardclock, RTC initialize. */
machine_clock_init();
/* ICU initiailze. */
curcpu()->ci_idepth = -1;
intc_init();
/* Exception vector. */
memcpy(VBR + 0x100, sh_vector_generic,
sh_vector_generic_end - sh_vector_generic);
#ifdef SH3
if (CPU_IS_SH3)
memcpy(VBR + 0x400, sh3_vector_tlbmiss,
sh3_vector_tlbmiss_end - sh3_vector_tlbmiss);
#endif
#ifdef SH4
if (CPU_IS_SH4)
memcpy(VBR + 0x400, sh4_vector_tlbmiss,
sh4_vector_tlbmiss_end - sh4_vector_tlbmiss);
#endif
memcpy(VBR + 0x600, sh_vector_interrupt,
sh_vector_interrupt_end - sh_vector_interrupt);
if (!SH_HAS_UNIFIED_CACHE)
sh_icache_sync_all();
__asm volatile("ldc %0, vbr" :: "r"(VBR));
/* kernel stack setup */
__sh_switch_resume = CPU_IS_SH3 ? sh3_switch_resume : sh4_switch_resume;
/* Set page size (4KB) */
uvm_setpagesize();
/* setup UBC channel A for single-stepping */
#if defined(PTRACE) || defined(DDB)
_reg_write_2(SH_(BBRA), 0); /* disable channel A */
_reg_write_2(SH_(BBRB), 0); /* disable channel B */
#ifdef SH3
if (CPU_IS_SH3) {
/* A: break after execution, ignore ASID */
_reg_write_4(SH3_BRCR, (UBC_CTL_A_AFTER_INSN
| SH3_UBC_CTL_A_MASK_ASID));
/* A: compare all address bits */
_reg_write_4(SH3_BAMRA, 0x00000000);
}
#endif /* SH3 */
#ifdef SH4
if (CPU_IS_SH4) {
/* A: break after execution */
_reg_write_2(SH4_BRCR, UBC_CTL_A_AFTER_INSN);
/* A: compare all address bits, ignore ASID */
_reg_write_1(SH4_BAMRA, SH4_UBC_MASK_NONE | SH4_UBC_MASK_ASID);
}
#endif /* SH4 */
#endif
}