/* $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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. */ /*- * 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 __KERNEL_RCSID(0, "$NetBSD: pxa2x0.c,v 1.5 2003/12/12 16:42:44 thorpej Exp $"); #include "pxaintc.h" #include "pxagpio.h" #if 0 #include "pxadmac.h" /* Not yet */ #endif #include "locators.h" #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; }; /* prototypes */ static int pxaip_match(struct device *, struct cfdata *, void *); static void pxaip_attach(struct device *, struct device *, void *); static int pxaip_search(struct device *, struct cfdata *, void *); static void pxaip_attach_critical(struct pxaip_softc *); static int pxaip_print(void *, const char *); static int pxaip_measure_cpuclock(struct pxaip_softc *); /* attach structures */ CFATTACH_DECL(pxaip, sizeof(struct pxaip_softc), pxaip_match, pxaip_attach, NULL, NULL); static struct pxaip_softc *pxaip_sc; static int pxaip_match(struct device *parent, struct cfdata *match, void *aux) { return 1; } static void pxaip_attach(struct device *parent, struct device *self, void *aux) { struct pxaip_softc *sc = (struct pxaip_softc *)self; int cpuclock; pxaip_sc = sc; sc->sc_bust = &pxa2x0_bs_tag; sc->sc_dmat = &pxa2x0_bus_dma_tag; aprint_normal(": PXA2x0 Onchip Peripheral Bus\n"); 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"); /* * Calculate clock speed * This takes 2 secs at most. */ cpuclock = pxaip_measure_cpuclock(sc) / 1000; printf("%s: CPU clock = %d.%03d MHz\n", self->dv_xname, cpuclock/1000, cpuclock%1000 ); /* * Attach critical devices */ pxaip_attach_critical(sc); /* * Attach all other devices */ config_search(pxaip_search, self, sc); } static int pxaip_search(struct device *parent, struct cfdata *cf, void *aux) { struct pxaip_softc *sc = aux; struct pxaip_attach_args aa; aa.pxa_iot = sc->sc_bust; aa.pxa_dmat = sc->sc_dmat; aa.pxa_addr = cf->cf_loc[PXAIPCF_ADDR]; aa.pxa_size = cf->cf_loc[PXAIPCF_SIZE]; aa.pxa_index = cf->cf_loc[PXAIPCF_INDEX]; aa.pxa_intr = cf->cf_loc[PXAIPCF_INTR]; if (config_match(parent, cf, &aa)) config_attach(parent, cf, &aa, pxaip_print); return 0; } static 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 = PXAIPCF_INTR_DEFAULT; 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 = PXAIPCF_INTR_DEFAULT; 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 } static int pxaip_print(void *aux, const char *name) { struct pxaip_attach_args *sa = (struct pxaip_attach_args*)aux; if (sa->pxa_addr != PXAIPCF_ADDR_DEFAULT) { aprint_normal(" addr 0x%lx", sa->pxa_addr); if (sa->pxa_size > PXAIPCF_SIZE_DEFAULT) aprint_normal("-0x%lx", sa->pxa_addr + sa->pxa_size-1); } if (sa->pxa_intr != PXAIPCF_INTR_DEFAULT) aprint_normal(" 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, c0, 0" : "=r" (x) ); return x; } static 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; if (bus_space_map(sc->sc_bust, PXA2X0_RTC_BASE, PXA2X0_RTC_SIZE, 0, &ioh)) panic("pxaip_measure_cpuclock: can't map RTC"); irq = disable_interrupts(I32_bit|F32_bit); __asm __volatile( "mrc p14, 0, %0, c0, c0, 0" : "=r" (pmcr_save) ); /* Enable clock counter */ __asm __volatile( "mcr p14, 0, %0, c0, c0, 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, c0, 0" : : "r" (pmcr_save) ); restore_interrupts(irq); bus_space_unmap(sc->sc_bust, ioh, PXA2X0_RTC_SIZE); 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, boolean_t 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); }