void
at91_rst_cpu_reset(void)
{
if (at91_rst_sc) {
cpu_reset_sam9g20(); /* May be null */
WR4(at91_rst_sc, RST_MR,
RST_MR_ERSTL(0xd) | RST_MR_URSTEN | RST_MR_KEY);
WR4(at91_rst_sc, RST_CR,
RST_CR_PROCRST |
RST_CR_PERRST |
RST_CR_EXTRST |
RST_CR_KEY);
}
while(1)
continue;
}
void
cpu_reset(void)
{
if (rst_sc) {
cpu_reset_sam9g20(); /* May be null */
WR4(rst_sc, RST_MR,
RST_MR_ERSTL(0xd) | RST_MR_URSTEN | RST_MR_KEY);
WR4(rst_sc, RST_CR,
RST_CR_PROCRST |
RST_CR_PERRST |
RST_CR_EXTRST |
RST_CR_KEY);
}
for(;;) ;
}
static int
at91_rst_attach(device_t dev)
{
struct rst_softc *sc;
const char *cause;
int rid, err;
rst_sc = sc = device_get_softc(dev);
sc->sc_dev = dev;
callout_init(&sc->tick_ch, 0);
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->mem_res == NULL) {
device_printf(dev, "could not allocate memory resources.\n");
err = ENOMEM;
goto out;
}
rid = 0;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE | RF_SHAREABLE);
if (sc->irq_res == NULL) {
device_printf(dev, "could not allocate interrupt resources.\n");
err = ENOMEM;
goto out;
}
/* Activate the interrupt. */
err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
rst_intr, NULL, sc, &sc->intrhand);
if (err)
device_printf(dev, "could not establish interrupt handler.\n");
WR4(rst_sc, RST_MR, RST_MR_ERSTL(0xd) | RST_MR_URSIEN | RST_MR_KEY);
switch (RD4(sc, RST_SR) & RST_SR_RST_MASK) {
case RST_SR_RST_POW:
cause = "Power On";
break;
case RST_SR_RST_WAKE:
cause = "Wake Up";
break;
case RST_SR_RST_WDT:
cause = "Watchdog";
break;
case RST_SR_RST_SOFT:
cause = "Software Request";
break;
case RST_SR_RST_USR:
cause = "External (User)";
break;
default:
cause = "Unknown";
break;
}
device_printf(dev, "Reset cause: %s.\n", cause);
/* cpu_reset_addr = cpu_reset; */
out:
return (err);
}