Annotation of sys/arch/arm/sa11x0/sa11x0.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pxa2x0.c,v 1.11 2005/11/11 23:59:58 deraadt Exp $ */
! 2: /* $NetBSD: pxa2x0.c,v 1.5 2003/12/12 16:42:44 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2002 Genetec Corporation. All rights reserved.
! 6: * Written by Hiroyuki Bessho for Genetec Corporation.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed for the NetBSD Project by
! 19: * Genetec Corporation.
! 20: * 4. The name of Genetec Corporation may not be used to endorse or
! 21: * promote products derived from this software without specific prior
! 22: * written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 26: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 27: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
! 28: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 29: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 30: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 31: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 32: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 33: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 34: * POSSIBILITY OF SUCH DAMAGE.
! 35: *
! 36: *
! 37: * Autoconfiguration support for the Intel PXA2[15]0 application
! 38: * processor. This code is derived from arm/sa11x0/sa11x0.c
! 39: */
! 40:
! 41: /*-
! 42: * Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved.
! 43: *
! 44: * This code is derived from software contributed to The NetBSD Foundation
! 45: * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
! 46: *
! 47: * Redistribution and use in source and binary forms, with or without
! 48: * modification, are permitted provided that the following conditions
! 49: * are met:
! 50: * 1. Redistributions of source code must retain the above copyright
! 51: * notice, this list of conditions and the following disclaimer.
! 52: * 2. Redistributions in binary form must reproduce the above copyright
! 53: * notice, this list of conditions and the following disclaimer in the
! 54: * documentation and/or other materials provided with the distribution.
! 55: * 3. All advertising materials mentioning features or use of this software
! 56: * must display the following acknowledgement:
! 57: * This product includes software developed by the NetBSD
! 58: * Foundation, Inc. and its contributors.
! 59: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 60: * contributors may be used to endorse or promote products derived
! 61: * from this software without specific prior written permission.
! 62: */
! 63: /*-
! 64: * Copyright (c) 1999
! 65: * Shin Takemura and PocketBSD Project. All rights reserved.
! 66: *
! 67: * Redistribution and use in source and binary forms, with or without
! 68: * modification, are permitted provided that the following conditions
! 69: * are met:
! 70: * 1. Redistributions of source code must retain the above copyright
! 71: * notice, this list of conditions and the following disclaimer.
! 72: * 2. Redistributions in binary form must reproduce the above copyright
! 73: * notice, this list of conditions and the following disclaimer in the
! 74: * documentation and/or other materials provided with the distribution.
! 75: * 3. All advertising materials mentioning features or use of this software
! 76: * must display the following acknowledgement:
! 77: * This product includes software developed by the PocketBSD project
! 78: * and its contributors.
! 79: * 4. Neither the name of the project nor the names of its contributors
! 80: * may be used to endorse or promote products derived from this software
! 81: * without specific prior written permission.
! 82: *
! 83: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 84: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 85: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 86: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 87: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 88: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 89: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 90: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 91: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 92: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 93: * SUCH DAMAGE.
! 94: *
! 95: */
! 96:
! 97: #include <sys/cdefs.h>
! 98: /*
! 99: __KERNEL_RCSID(0, "$NetBSD: pxa2x0.c,v 1.5 2003/12/12 16:42:44 thorpej Exp $");
! 100: */
! 101:
! 102: //#include "saic.h"
! 103: //#include "sagpio.h"
! 104: //#include "sadmac.h"
! 105:
! 106: #include <sys/param.h>
! 107: #include <sys/systm.h>
! 108: #include <sys/device.h>
! 109: #include <sys/kernel.h>
! 110: #include <sys/reboot.h>
! 111:
! 112: #include <machine/cpu.h>
! 113: #include <machine/bus.h>
! 114:
! 115: #include <arm/cpufunc.h>
! 116: #include <arm/mainbus/mainbus.h>
! 117: #include <arm/sa11x0/sa11x0_reg.h>
! 118: #include <arm/sa11x0/sa11x0_var.h>
! 119:
! 120: struct saip_softc {
! 121: struct device sc_dev;
! 122: bus_space_tag_t sc_bust;
! 123: bus_dma_tag_t sc_dmat;
! 124: // bus_space_handle_t sc_bush_clk;
! 125: bus_space_handle_t sc_bush_rtc;
! 126: };
! 127:
! 128: /* prototypes */
! 129: int saip_match(struct device *, void *, void *);
! 130: void saip_attach(struct device *, struct device *, void *);
! 131: int saip_search(struct device *, void *, void *);
! 132: void saip_attach_critical(struct saip_softc *);
! 133: int saip_print(void *, const char *);
! 134:
! 135: //int saip_measure_cpuclock(struct saip_softc *);
! 136: extern volatile struct timeval time;
! 137:
! 138: /* attach structures */
! 139: struct cfattach saip_ca = {
! 140: sizeof(struct saip_softc), saip_match, saip_attach
! 141: };
! 142:
! 143: struct cfdriver saip_cd = {
! 144: NULL, "saip", DV_DULL
! 145: };
! 146:
! 147: struct saip_softc *saip_sc;
! 148:
! 149: int
! 150: saip_match(struct device *parent, void *match, void *aux)
! 151: {
! 152:
! 153: return 1;
! 154: }
! 155:
! 156: void
! 157: saip_attach(struct device *parent, struct device *self, void *aux)
! 158: {
! 159: struct saip_softc *sc = (struct saip_softc *)self;
! 160: extern struct arm32_bus_dma_tag sa11x0_bus_dma_tag;
! 161:
! 162: saip_sc = sc;
! 163: sc->sc_bust = &sa11x0_bs_tag;
! 164: sc->sc_dmat = &sa11x0_bus_dma_tag;
! 165:
! 166: if (bus_space_map(sc->sc_bust, SARTC_BASE, 0x20 /* XXX SARTC_SIZE */,
! 167: 0, &sc->sc_bush_rtc))
! 168: panic("saip_attach: failed to map RTC");
! 169:
! 170: printf("\n");
! 171:
! 172: /* TODO: calculate cpu clock */
! 173:
! 174: /*
! 175: * Attach critical devices
! 176: */
! 177: saip_attach_critical(sc);
! 178:
! 179: /*
! 180: * Attach all other devices
! 181: */
! 182: config_search(saip_search, self, sc);
! 183:
! 184: }
! 185:
! 186: int
! 187: saip_search(struct device *parent, void *c, void *aux)
! 188: {
! 189: struct saip_softc *sc = aux;
! 190: struct saip_attach_args aa;
! 191: struct cfdata *cf = c;
! 192:
! 193: aa.sai_iot = sc->sc_bust;
! 194: aa.sai_dmat = sc->sc_dmat;
! 195:
! 196: aa.sai_addr = (cf->cf_loc)[0];
! 197: aa.sai_size = (cf->cf_loc)[1];
! 198: aa.sai_intr = (cf->cf_loc)[2];
! 199: aa.sai_index = (cf->cf_loc)[3];
! 200:
! 201: config_found(parent, &aa, saip_print);
! 202:
! 203: return 0;
! 204: }
! 205:
! 206: void
! 207: saip_attach_critical(struct saip_softc *sc)
! 208: {
! 209: /*
! 210: * Attach critical devices.
! 211: * This includes saic and sadmac.
! 212: */
! 213:
! 214: struct saip_attach_args aa;
! 215:
! 216: aa.sai_iot = sc->sc_bust;
! 217: aa.sai_dmat = sc->sc_dmat;
! 218: aa.sai_addr = SAIPIC_BASE;
! 219: aa.sai_size = 0x10 /* XXX SAIPIC_SIZE */;
! 220: aa.sai_intr = -1;
! 221: if (config_found(&sc->sc_dev, &aa, saip_print) == NULL)
! 222: panic("saip_attach_critical: failed to attach INTC!");
! 223:
! 224: #if NSADMAC > 0
! 225: aa.sai_iot = sc->sc_bust;
! 226: aa.sai_dmat = sc->sc_dmat;
! 227: aa.sai_addr = SADMAC_BASE;
! 228: aa.sai_size = 0xc0 /* XXX SADMAC_SIZE */;
! 229: aa.sai_intr = -1; /* XXX */
! 230: if (config_found(&sc->sc_dev, &aa, saip_print) == NULL)
! 231: panic("saip_attach_critical: failed to attach DMAC!");
! 232: #endif
! 233: }
! 234:
! 235: int
! 236: saip_print(void *aux, const char *name)
! 237: {
! 238: struct saip_attach_args *sa = (struct saip_attach_args*)aux;
! 239:
! 240: if (sa->sai_addr != -1) {
! 241: printf(" addr 0x%lx", sa->sai_addr);
! 242: if (sa->sai_size > -1)
! 243: printf("-0x%lx", sa->sai_addr + sa->sai_size-1);
! 244: }
! 245: if (sa->sai_intr != -1)
! 246: printf(" intr %d", sa->sai_intr);
! 247:
! 248: return (UNCONF);
! 249: }
! 250:
! 251: # if 0
! 252: static inline uint32_t
! 253: read_clock_counter(void)
! 254: {
! 255: uint32_t x;
! 256: __asm __volatile("mrc p14, 0, %0, c1, c1, 0" : "=r" (x));
! 257:
! 258: return x;
! 259: }
! 260:
! 261: int
! 262: saip_measure_cpuclock(struct saip_softc *sc)
! 263: {
! 264: uint32_t rtc0, rtc1, start, end;
! 265: uint32_t pmcr_save;
! 266: bus_space_handle_t ioh;
! 267: int irq;
! 268:
! 269: ioh = sc->sc_bush_rtc;
! 270: irq = disable_interrupts(I32_bit|F32_bit);
! 271:
! 272: __asm __volatile( "mrc p14, 0, %0, c0, c1, 0" : "=r" (pmcr_save));
! 273: /* Enable clock counter */
! 274: __asm __volatile( "mcr p14, 0, %0, c0, c1, 0" : : "r" (0x0001));
! 275:
! 276: rtc0 = bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR);
! 277: /* Wait for next second starts */
! 278: while ((rtc1 = bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR)) == rtc0)
! 279: ;
! 280: start = read_clock_counter();
! 281: while(rtc1 == bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR))
! 282: ; /* Wait for 1sec */
! 283: end = read_clock_counter();
! 284:
! 285: __asm __volatile( "mcr p14, 0, %0, c0, c1, 0" : : "r" (pmcr_save));
! 286: restore_interrupts(irq);
! 287:
! 288: return end - start;
! 289: }
! 290:
! 291: void
! 292: pxa2x0_turbo_mode(int f)
! 293: {
! 294: __asm __volatile("mcr p14, 0, %0, c6, c0, 0" : : "r" (f));
! 295: }
! 296:
! 297: void
! 298: pxa2x0_probe_sdram(vaddr_t memctl_va, paddr_t *start, paddr_t *size)
! 299: {
! 300: u_int32_t mdcnfg, dwid, dcac, drac, dnb;
! 301: int i;
! 302:
! 303: mdcnfg = *((volatile u_int32_t *)(memctl_va + MEMCTL_MDCNFG));
! 304:
! 305: /*
! 306: * Scan all 4 SDRAM banks
! 307: */
! 308: for (i = 0; i < PXA2X0_SDRAM_BANKS; i++) {
! 309: start[i] = 0;
! 310: size[i] = 0;
! 311:
! 312: switch (i) {
! 313: case 0:
! 314: case 1:
! 315: if ((i == 0 && (mdcnfg & MDCNFG_DE0) == 0) ||
! 316: (i == 1 && (mdcnfg & MDCNFG_DE1) == 0))
! 317: continue;
! 318: dwid = mdcnfg >> MDCNFD_DWID01_SHIFT;
! 319: dcac = mdcnfg >> MDCNFD_DCAC01_SHIFT;
! 320: drac = mdcnfg >> MDCNFD_DRAC01_SHIFT;
! 321: dnb = mdcnfg >> MDCNFD_DNB01_SHIFT;
! 322: break;
! 323:
! 324: case 2:
! 325: case 3:
! 326: if ((i == 2 && (mdcnfg & MDCNFG_DE2) == 0) ||
! 327: (i == 3 && (mdcnfg & MDCNFG_DE3) == 0))
! 328: continue;
! 329: dwid = mdcnfg >> MDCNFD_DWID23_SHIFT;
! 330: dcac = mdcnfg >> MDCNFD_DCAC23_SHIFT;
! 331: drac = mdcnfg >> MDCNFD_DRAC23_SHIFT;
! 332: dnb = mdcnfg >> MDCNFD_DNB23_SHIFT;
! 333: break;
! 334: default:
! 335: panic("pxa2x0_probe_sdram: impossible");
! 336: }
! 337:
! 338: dwid = 2 << (1 - (dwid & MDCNFD_DWID_MASK)); /* 16/32 width */
! 339: dcac = 1 << ((dcac & MDCNFD_DCAC_MASK) + 8); /* 8-11 columns */
! 340: drac = 1 << ((drac & MDCNFD_DRAC_MASK) + 11); /* 11-13 rows */
! 341: dnb = 2 << (dnb & MDCNFD_DNB_MASK); /* # of banks */
! 342:
! 343: size[i] = (paddr_t)(dwid * dcac * drac * dnb);
! 344: start[i] = PXA2X0_SDRAM0_START + (i * PXA2X0_SDRAM_BANK_SIZE);
! 345: }
! 346: }
! 347:
! 348: void
! 349: pxa2x0_clkman_config(u_int clk, int enable)
! 350: {
! 351: struct saip_softc *sc;
! 352: u_int32_t rv;
! 353:
! 354: KDASSERT(saip_sc != NULL);
! 355: sc = saip_sc;
! 356:
! 357: rv = bus_space_read_4(sc->sc_bust, sc->sc_bush_clk, CLKMAN_CKEN);
! 358: rv &= ~clk;
! 359:
! 360: if (enable)
! 361: rv |= clk;
! 362:
! 363: bus_space_write_4(sc->sc_bust, sc->sc_bush_clk, CLKMAN_CKEN, rv);
! 364: }
! 365: #endif /* 0 */
! 366: #if 0
! 367: void
! 368: pxa2x0_rtc_setalarm(u_int32_t secs)
! 369: {
! 370: struct saip_softc *sc;
! 371: u_int32_t rv;
! 372: int s;
! 373:
! 374: KDASSERT(saip_sc != NULL);
! 375: sc = saip_sc;
! 376:
! 377: s = splhigh();
! 378: bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTAR, secs);
! 379: rv = bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR);
! 380: if (secs == 0)
! 381: bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR,
! 382: (rv | RTSR_AL) & ~RTSR_ALE);
! 383: else
! 384: bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR,
! 385: (rv | RTSR_AL | RTSR_ALE));
! 386: splx(s);
! 387: }
! 388:
! 389: u_int32_t
! 390: pxa2x0_rtc_getalarm(void)
! 391: {
! 392: struct saip_softc *sc;
! 393:
! 394: KDASSERT(saip_sc != NULL);
! 395: sc = saip_sc;
! 396:
! 397: return (bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTAR));
! 398: }
! 399:
! 400: u_int32_t
! 401: pxa2x0_rtc_getsecs(void)
! 402: {
! 403: struct saip_softc *sc;
! 404:
! 405: KDASSERT(saip_sc != NULL);
! 406: sc = saip_sc;
! 407:
! 408: return (bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RCNR));
! 409: }
! 410: #endif /* 0 */
! 411:
! 412: void
! 413: resettodr(void)
! 414: {
! 415: struct saip_softc *sc = saip_sc;
! 416:
! 417: bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, SARTC_RCNR,
! 418: (u_int32_t)time.tv_sec);
! 419: }
! 420:
! 421: void
! 422: inittodr(time_t base)
! 423: {
! 424: struct saip_softc *sc = saip_sc;
! 425: u_int32_t rcnr;
! 426:
! 427: /* XXX decide if RCNR can be valid, based on the last reset
! 428: * XXX reason, i.e. RCSR. */
! 429: rcnr = bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, SARTC_RCNR);
! 430:
! 431: /* XXX check how much RCNR differs from the filesystem date. */
! 432: if (rcnr > base)
! 433: time.tv_sec = rcnr;
! 434: else {
! 435: printf("WARNING: using filesystem date -- CHECK AND RESET THE DATE!\n");
! 436: time.tv_sec = base;
! 437: }
! 438:
! 439: time.tv_usec = 0;
! 440: }
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