diff options
Diffstat (limited to 'sys/arch/arm/xscale/pxa2x0.c')
| -rw-r--r-- | sys/arch/arm/xscale/pxa2x0.c | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/sys/arch/arm/xscale/pxa2x0.c b/sys/arch/arm/xscale/pxa2x0.c new file mode 100644 index 00000000000..99d6dc4d569 --- /dev/null +++ b/sys/arch/arm/xscale/pxa2x0.c @@ -0,0 +1,393 @@ +/* $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 <sys/cdefs.h> +/* +__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 <sys/param.h> +#include <sys/systm.h> +#include <sys/device.h> +#include <sys/kernel.h> +#include <sys/reboot.h> + +#include <machine/cpu.h> +#include <machine/bus.h> + +#include <arm/cpufunc.h> +#include <arm/mainbus/mainbus.h> +#include <arm/xscale/pxa2x0reg.h> +#include <arm/xscale/pxa2x0var.h> + +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 *, void *, void *); +static void pxaip_attach(struct device *, struct device *, void *); +static int pxaip_search(struct device *, void *, void *); +static void pxaip_attach_critical(struct pxaip_softc *); +static 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 +}; + +struct cfdriver pxaip_cd = { + NULL, "pxaip", DV_DULL +}; +#endif + +static struct pxaip_softc *pxaip_sc; + +static int +pxaip_match(struct device *parent, void *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; + + printf(": PXA2x0 Onchip Peripheral Bus "); + + 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. + */ +#if 0 + cpuclock = pxaip_measure_cpuclock(sc) / 1000; +#else + cpuclock = 398108; + +#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); + +} + +static 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; +} + +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 = -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 +} + +static 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, c0, 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; + + 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, 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); +} |