diff options
Diffstat (limited to 'os/cerf250/archcerf.c')
| -rw-r--r-- | os/cerf250/archcerf.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/os/cerf250/archcerf.c b/os/cerf250/archcerf.c new file mode 100644 index 00000000..4ee9f4e7 --- /dev/null +++ b/os/cerf250/archcerf.c @@ -0,0 +1,266 @@ +/* + * Intrinsyc Cerfboard 250 + */ +#include "u.h" +#include "../port/lib.h" +#include "mem.h" +#include "dat.h" +#include "fns.h" +#include "../port/error.h" +#include "io.h" +#include "draw.h" +#include <memdraw.h> + +#include "../port/netif.h" +#include "etherif.h" +#include "../port/flashif.h" + +enum { + /* Cerf250 GPIO assignment */ + GPIO_LED0_o = 4, /* active high */ + GPIO_nCFD_i= 14, /* compact flash detect, active low: falling edge */ + + Maxmac= 4, /* number of MAC addresses taken from EEPROM */ +}; + +static uchar macaddrs[Maxmac][Eaddrlen]; + +void +archreset(void) +{ + GpioReg *g = GPIOREG; + + g->grer[0] = 0; + g->grer[1] = 0; + g->grer[2] = 0; + g->gfer[0] = 0; + g->gfer[1] = 0; + g->gfer[2] = 0; + g->gedr[0] = g->gedr[0]; + g->gedr[1] = g->gedr[1]; + g->gedr[2] = g->gedr[2]; + + g->gafr[2] |= GPAF(GPIO_FFRXD_1_i, 1); + g->gafr[2] |= GPAF(GPIO_FFTXD_2_o, 2); + g->gpdr[0] |= GPB(GPIO_LED0_o); + g->gpdr[1] |= GPB(GPIO_FFTXD_2_o); + g->gpsr[0] = GPB(GPIO_LED0_o); + + uartdebuginit(); +} + +void +ledset(int n) +{ + if(n) + GPIOREG->gpsr[0] = GPB(GPIO_LED0_o); + else + GPIOREG->gpcr[0] = GPB(GPIO_LED0_o); +} + +void +archconfinit(void) +{ + int w; + + conf.topofmem = PHYSMEM0+64*MB; +// w = PMGRREG->ppcr & 0x1f; + m->cpuhz = CLOCKFREQ*(27*2*2); +} + +void +archuartpower(int, int) +{ +} + +void +kbdinit(void) +{ +} + +void +archreboot(void) +{ + dcflushall(); + ledset(1); +// GPIOREG->gedr = 1<<0; + mmuputctl(mmugetctl() & ~CpCaltivec); /* restore bootstrap's vectors */ +// RESETREG->rsrr = 1; /* software reset */ + for(;;) + spllo(); +} + +void +archflashwp(Flash*, int) +{ +} + +/* + * for devflash.c:/^flashreset + * retrieve flash type, virtual base and length and return 0; + * return -1 on error (no flash) + */ +int +archflashreset(int bank, Flash *f) +{ + if(bank != 0) + return -1; + f->type = "cfi16"; + f->addr = KADDR(FLASHMEM); + f->size = 0; + f->width = 4; + f->interleave = 1; + return 0; +} + +/* + * set ether parameters: the contents should be derived from EEPROM or NVRAM + */ +int +archether(int ctlno, Ether *ether) +{ + if(ctlno > 0) + return -1; + sprint(ether->type, "91c111"); + ether->mem = PHYSCS1; + ether->nopt = 0; + ether->port = 0x300; /* there isn't an ether EEPROM; use chip's default */ + ether->irq = 21; /* GPIO */ + ether->itype = GPIOrising; /* active high */ +// gpioreserve(ether->irq); +// gpioconfig(ether->irq, Gpio_gpio | Gpio_in); + memmove(ether->ea, macaddrs[ctlno], Eaddrlen); + return 1; +} + +/* + * pcmcia + */ +int +pcmpowered(int slotno) +{ + if(slotno) + return 0; + return 3; +} + +void +pcmpower(int slotno, int on) +{ + USED(slotno, on); +} + +void +pcmreset(int slot) +{ + if(slot != 0) + return; +// GPIOREG->gpsr = CFReset; +// delay(100); +// GPIOREG->gpcr = CFReset; +} + +int +pcmpin(int slot, int type) +{ + if(slot) + return -1; + return -1; +// switch(type){ +// case PCMready: +// return CFRdypin; +// case PCMeject: +// return CFnCDxpin; +// case PCMstschng: +// return -1; +// } +} + +void +pcmsetvpp(int slot, int vpp) +{ + USED(slot, vpp); +} + +/* + * boot environment in eeprom + */ + +enum { + EEpromHdr= 8, /* bytes */ + Envitemsize= 64, + Ekeysize= 48, +}; + +static I2Cdev eedev; +static struct { + uchar buf[Envitemsize]; + int size; +} bootenv; + +static int +eepromitem(uchar *buf, int lim, ulong *off) +{ + int l; + uchar b; + + if(i2crecv(&eedev, &b, 1, (*off)++) != 1) + return -1; + l = b; + if(l & 0x80){ + if(i2crecv(&eedev, &b, 1, (*off)++) != 1) + return -1; + l = ((l & 0x7F)<<8) | b; + } + if(buf == nil) + return l; + if(l > lim) + l = lim; + return i2crecv(&eedev, buf, l, *off); +} + +void +eepromscan(void) +{ + int n, l; + ulong off; + uchar buf[2]; + char *p; + int mac; + + eedev.addr = 0x56; + eedev.salen = 2; + i2csetup(1); + n = i2crecv(&eedev, buf, sizeof(buf), 0); + if(n <= 0){ + iprint("eepromscan: %d\n", n); + return; + } + if(buf[0] != 0xEF || buf[1] != 0xBE){ + iprint("eeprom invalid\n"); + return; + } + bootenv.size = 0; + for(off = EEpromHdr; off < 16384;){ + l = eepromitem(bootenv.buf, sizeof(bootenv.buf), &off); /* key */ + if(l <= 0) + break; + off += l; + if(memcmp(bootenv.buf, "MACAD", 5) == 0){ /* only look for MAC addresses now */ + mac = bootenv.buf[5] - '0'; + if(mac >= 0 && mac < Maxmac){ + l = eepromitem(bootenv.buf, sizeof(bootenv.buf), &off); + if(l < 0) + break; + if(l == Eaddrlen) + memmove(macaddrs[mac], bootenv.buf, Eaddrlen); + off += l+2; + continue; + } + } + l = eepromitem(nil, 0, &off); /* skip value */ + if(l < 0) + break; + off += l+2; /* 2 byte crc */ + } +} |