/* $OpenBSD: pxa2x0.c,v 1.16 2010/08/30 21:35:55 deraadt Exp $ */ /* $NetBSD: pxa2x0.c,v 1.5 2003/12/12 16:42:44 thorpej Exp $ */ /* * Copyright (c) 2002 Genetec Corporation. All rights reserved. * Written by Hiroyuki Bessho for Genetec Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Genetec Corporation. * 4. The name of Genetec Corporation may not be used to endorse or * promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * * Autoconfiguration support for the Intel PXA2[15]0 application * processor. This code is derived from arm/sa11x0/sa11x0.c */ /*- * Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by IWAMOTO Toshihiro and Ichiro FUKUHARA. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. */ /*- * Copyright (c) 1999 * Shin Takemura and PocketBSD Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the PocketBSD project * and its contributors. * 4. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include "pxaintc.h" #include "pxagpio.h" #include "pxadmac.h" #include #include #include #include #include #include #include #include #include #include #include #include struct pxaip_softc { struct device sc_dev; bus_space_tag_t sc_bust; bus_dma_tag_t sc_dmat; bus_space_handle_t sc_bush_clk; bus_space_handle_t sc_bush_rtc; }; /* prototypes */ int pxaip_match(struct device *, void *, void *); void pxaip_attach(struct device *, struct device *, void *); int pxaip_search(struct device *, void *, void *); void pxaip_attach_critical(struct pxaip_softc *); int pxaip_print(void *, const char *); int pxaip_measure_cpuclock(struct pxaip_softc *); /* attach structures */ #ifdef __NetBSD__ CFATTACH_DECL(pxaip, sizeof(struct pxaip_softc), pxaip_match, pxaip_attach, NULL, NULL); #else struct cfattach pxaip_ca = { sizeof(struct pxaip_softc), pxaip_match, pxaip_attach, NULL, config_activate_children }; struct cfdriver pxaip_cd = { NULL, "pxaip", DV_DULL }; #endif struct pxaip_softc *pxaip_sc; int pxaip_match(struct device *parent, void *match, void *aux) { return 1; } void pxaip_attach(struct device *parent, struct device *self, void *aux) { struct pxaip_softc *sc = (struct pxaip_softc *)self; #ifdef __APM__ extern int freq; #endif int cpuclock; pxaip_sc = sc; sc->sc_bust = &pxa2x0_bs_tag; sc->sc_dmat = &pxa2x0_bus_dma_tag; if (bus_space_map(sc->sc_bust, PXA2X0_CLKMAN_BASE, PXA2X0_CLKMAN_SIZE, 0, &sc->sc_bush_clk)) panic("pxaip_attach: failed to map CLKMAN"); if (bus_space_map(sc->sc_bust, PXA2X0_RTC_BASE, PXA2X0_RTC_SIZE, 0, &sc->sc_bush_rtc)) panic("pxaip_attach: failed to map RTC"); /* * Calculate clock speed * This takes 2 secs at most. */ cpuclock = pxaip_measure_cpuclock(sc) / 1000; if (cpuclock % 1000 > 500) cpuclock = cpuclock + 1000 - cpuclock % 1000; #ifdef __APM__ freq = cpuclock / 1000; #endif printf(": CPU clock = %d.%03d MHz\n", cpuclock/1000, cpuclock%1000); /* * Attach critical devices */ pxaip_attach_critical(sc); /* * Attach all other devices */ config_search(pxaip_search, self, sc); } int pxaip_search(struct device *parent, void *c, void *aux) { struct pxaip_softc *sc = aux; struct pxaip_attach_args aa; struct cfdata *cf = c; aa.pxa_iot = sc->sc_bust; aa.pxa_dmat = sc->sc_dmat; #if 0 aa.pxa_addr = cf->cf_addr; aa.pxa_size = cf->cf_size; aa.pxa_intr = cf->cf_intr; aa.pxa_index = cf->cf_index; #else aa.pxa_addr = (cf->cf_loc)[0]; aa.pxa_size = (cf->cf_loc)[1]; aa.pxa_intr = (cf->cf_loc)[2]; aa.pxa_index = (cf->cf_loc)[3]; #endif config_found(parent, &aa, pxaip_print); return 0; } void pxaip_attach_critical(struct pxaip_softc *sc) { struct pxaip_attach_args aa; aa.pxa_iot = sc->sc_bust; aa.pxa_dmat = sc->sc_dmat; aa.pxa_addr = PXA2X0_INTCTL_BASE; aa.pxa_size = PXA2X0_INTCTL_SIZE; aa.pxa_intr = -1; if (config_found(&sc->sc_dev, &aa, pxaip_print) == NULL) panic("pxaip_attach_critical: failed to attach INTC!"); #if NPXAGPIO > 0 aa.pxa_iot = sc->sc_bust; aa.pxa_dmat = sc->sc_dmat; aa.pxa_addr = PXA2X0_GPIO_BASE; aa.pxa_size = PXA2X0_GPIO_SIZE; aa.pxa_intr = -1; if (config_found(&sc->sc_dev, &aa, pxaip_print) == NULL) panic("pxaip_attach_critical: failed to attach GPIO!"); #endif #if NPXADMAC > 0 aa.pxa_iot = sc->sc_bust; aa.pxa_dmat = sc->sc_dmat; aa.pxa_addr = PXA2X0_DMAC_BASE; aa.pxa_size = PXA2X0_DMAC_SIZE; aa.pxa_intr = PXA2X0_INT_DMA; if (config_found(&sc->sc_dev, &aa, pxaip_print) == NULL) panic("pxaip_attach_critical: failed to attach DMAC!"); #endif } int pxaip_print(void *aux, const char *name) { struct pxaip_attach_args *sa = (struct pxaip_attach_args*)aux; if (sa->pxa_addr != -1) { printf(" addr 0x%lx", sa->pxa_addr); if (sa->pxa_size > -1) printf("-0x%lx", sa->pxa_addr + sa->pxa_size-1); } if (sa->pxa_intr != -1) printf(" intr %d", sa->pxa_intr); return (UNCONF); } static inline uint32_t read_clock_counter(void) { uint32_t x; __asm __volatile("mrc p14, 0, %0, c1, c1, 0" : "=r" (x)); return x; } int pxaip_measure_cpuclock(struct pxaip_softc *sc) { uint32_t rtc0, rtc1, start, end; uint32_t pmcr_save; bus_space_handle_t ioh; int irq; ioh = sc->sc_bush_rtc; irq = disable_interrupts(I32_bit|F32_bit); __asm __volatile( "mrc p14, 0, %0, c0, c1, 0" : "=r" (pmcr_save)); /* Enable clock counter */ __asm __volatile( "mcr p14, 0, %0, c0, c1, 0" : : "r" (0x0001)); rtc0 = bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR); /* Wait for next second starts */ while ((rtc1 = bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR)) == rtc0) ; start = read_clock_counter(); while(rtc1 == bus_space_read_4(sc->sc_bust, ioh, RTC_RCNR)) ; /* Wait for 1sec */ end = read_clock_counter(); __asm __volatile( "mcr p14, 0, %0, c0, c1, 0" : : "r" (pmcr_save)); restore_interrupts(irq); return end - start; } void pxa2x0_turbo_mode(int f) { __asm __volatile("mcr p14, 0, %0, c6, c0, 0" : : "r" (f)); } void pxa2x0_probe_sdram(vaddr_t memctl_va, paddr_t *start, paddr_t *size) { u_int32_t mdcnfg, dwid, dcac, drac, dnb; int i; mdcnfg = *((volatile u_int32_t *)(memctl_va + MEMCTL_MDCNFG)); /* * Scan all 4 SDRAM banks */ for (i = 0; i < PXA2X0_SDRAM_BANKS; i++) { start[i] = 0; size[i] = 0; switch (i) { case 0: case 1: if ((i == 0 && (mdcnfg & MDCNFG_DE0) == 0) || (i == 1 && (mdcnfg & MDCNFG_DE1) == 0)) continue; dwid = mdcnfg >> MDCNFD_DWID01_SHIFT; dcac = mdcnfg >> MDCNFD_DCAC01_SHIFT; drac = mdcnfg >> MDCNFD_DRAC01_SHIFT; dnb = mdcnfg >> MDCNFD_DNB01_SHIFT; break; case 2: case 3: if ((i == 2 && (mdcnfg & MDCNFG_DE2) == 0) || (i == 3 && (mdcnfg & MDCNFG_DE3) == 0)) continue; dwid = mdcnfg >> MDCNFD_DWID23_SHIFT; dcac = mdcnfg >> MDCNFD_DCAC23_SHIFT; drac = mdcnfg >> MDCNFD_DRAC23_SHIFT; dnb = mdcnfg >> MDCNFD_DNB23_SHIFT; break; default: panic("pxa2x0_probe_sdram: impossible"); } dwid = 2 << (1 - (dwid & MDCNFD_DWID_MASK)); /* 16/32 width */ dcac = 1 << ((dcac & MDCNFD_DCAC_MASK) + 8); /* 8-11 columns */ drac = 1 << ((drac & MDCNFD_DRAC_MASK) + 11); /* 11-13 rows */ dnb = 2 << (dnb & MDCNFD_DNB_MASK); /* # of banks */ size[i] = (paddr_t)(dwid * dcac * drac * dnb); start[i] = PXA2X0_SDRAM0_START + (i * PXA2X0_SDRAM_BANK_SIZE); } } void pxa2x0_clkman_config(u_int clk, int enable) { struct pxaip_softc *sc; u_int32_t rv; KDASSERT(pxaip_sc != NULL); sc = pxaip_sc; rv = bus_space_read_4(sc->sc_bust, sc->sc_bush_clk, CLKMAN_CKEN); rv &= ~clk; if (enable) rv |= clk; bus_space_write_4(sc->sc_bust, sc->sc_bush_clk, CLKMAN_CKEN, rv); } void pxa2x0_rtc_setalarm(u_int32_t secs) { struct pxaip_softc *sc; u_int32_t rv; int s; KDASSERT(pxaip_sc != NULL); sc = pxaip_sc; s = splhigh(); bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTAR, secs); rv = bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR); if (secs == 0) bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR, (rv | RTSR_AL) & ~RTSR_ALE); else bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTSR, (rv | RTSR_AL | RTSR_ALE)); splx(s); } u_int32_t pxa2x0_rtc_getalarm(void) { struct pxaip_softc *sc; KDASSERT(pxaip_sc != NULL); sc = pxaip_sc; return (bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RTAR)); } u_int32_t pxa2x0_rtc_getsecs(void) { struct pxaip_softc *sc; KDASSERT(pxaip_sc != NULL); sc = pxaip_sc; return (bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RCNR)); } void resettodr(void) { struct pxaip_softc *sc = pxaip_sc; struct timeval tv; microtime(&tv); bus_space_write_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RCNR, (u_int32_t)tv.tv_sec); } void inittodr(time_t base) { struct pxaip_softc *sc = pxaip_sc; struct timespec ts; u_int32_t rcnr; /* XXX decide if RCNR can be valid, based on the last reset * XXX reason, i.e. RCSR. */ rcnr = bus_space_read_4(sc->sc_bust, sc->sc_bush_rtc, RTC_RCNR); /* XXX check how much RCNR differs from the filesystem date. */ if (rcnr > base) ts.tv_sec = rcnr; else { printf("WARNING: using filesystem date -- CHECK AND RESET THE DATE!\n"); ts.tv_sec = base; } ts.tv_nsec = 0; tc_setclock(&ts); }