/* $Id: mpcsa_machdep.c,v 1.9 2013/08/18 15:58:20 matt Exp $ */ /* $NetBSD: mpcsa_machdep.c,v 1.9 2013/08/18 15:58:20 matt Exp $ */ /* * Copyright (c) 2007 Embedtronics Oy * Based on tsarm_machdep.c * * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. * All rights reserved. * * Based on code written by Jason R. Thorpe and Steve C. Woodford for * Wasabi Systems, Inc. * * 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 * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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. */ /* * Copyright (c) 1997,1998 Mark Brinicombe. * Copyright (c) 1997,1998 Causality Limited. * 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 Mark Brinicombe * for the NetBSD Project. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * Machine dependent functions for kernel setup for Iyonix. */ #include __KERNEL_RCSID(0, "$NetBSD: mpcsa_machdep.c,v 1.9 2013/08/18 15:58:20 matt Exp $"); #include "opt_ddb.h" #include "opt_kgdb.h" #include "opt_pmap_debug.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DRAM_BLOCKS 1 #include #include #include "seeprom.h" #if NSEEPROM > 0 #include #include #include #include #endif #include #if TODO #include "epcom.h" #if NEPCOM > 0 #include #endif #include "isa.h" #if NISA > 0 #include #include #endif #include #include #endif // TODO #include #include #include "opt_ipkdb.h" #include "ksyms.h" #include #include #include #include #include /* boot configuration: */ BootConfig bootconfig; /* Boot config storage */ char *boot_args = NULL; char *boot_file = NULL; /* hmmm */ static struct arm32_dma_range mpcsa_dma_ranges[4]; static struct at91bus_machdep mpcsabus; static at91bus_tag_t old_at91bus_tag; /* Prototypes */ static void mpcsa_device_register(device_t dev, void *aux); static void mpcsabus_init(struct at91bus_clocks *); static void mpcsabus_peripheral_clock(int pid, int enable); static uint32_t mpcsabus_gpio_mask(int pid); /* * void cpu_reboot(int howto, char *bootstr) * * Reboots the system * * Deal with any syncing, unmounting, dumping and shutdown hooks, * then reset the CPU. */ void cpu_reboot(int howto, char *bootstr) { /* * If we are still cold then hit the air brakes * and crash to earth fast */ if (cold) { doshutdownhooks(); pmf_system_shutdown(boothowto); printf("\r\n"); printf("The operating system has halted.\r\n"); printf("Please press any key to reboot.\r\n"); cngetc(); printf("\r\nrebooting...\r\n"); goto reset; } /* Disable console buffering */ /* * If RB_NOSYNC was not specified sync the discs. * Note: Unless cold is set to 1 here, syslogd will die during the * unmount. It looks like syslogd is getting woken up only to find * that it cannot page part of the binary in as the filesystem has * been unmounted. */ if (!(howto & RB_NOSYNC)) bootsync(); /* Say NO to interrupts */ splhigh(); /* Do a dump if requested. */ if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) dumpsys(); /* Run any shutdown hooks */ doshutdownhooks(); pmf_system_shutdown(boothowto); /* Make sure IRQ's are disabled */ IRQdisable; if (howto & RB_HALT) { printf("\r\n"); printf("The operating system has halted.\r\n"); printf("Please press any key to reboot.\r\n"); cngetc(); } printf("\r\nrebooting...\r\n"); reset: /* * Make really really sure that all interrupts are disabled, * and poke the Internal Bus and Peripheral Bus reset lines. */ (void) disable_interrupts(I32_bit|F32_bit); STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1; STREG(ST_CR) = ST_CR_WDRST; for (;;); } /* * u_int initarm(...) * * Initial entry point on startup. This gets called before main() is * entered. * It should be responsible for setting up everything that must be * in place when main is called. * This includes * Taking a copy of the boot configuration structure. * Initialising the physical console so characters can be printed. * Setting up page tables for the kernel * Initialising interrupt controllers to a sane default state */ u_int initarm(void *arg) { u_int ret; /* * basic AT91 initialization: */ if (at91bus_init()) panic("%s: at91bus_init() failed", __FUNCTION__); if (AT91_CHIP_ID() == AT91RM9200_CHIP_ID) { memcpy(&mpcsabus, at91bus_tag, sizeof(mpcsabus)); mpcsabus.init = mpcsabus_init; mpcsabus.peripheral_clock = mpcsabus_peripheral_clock; mpcsabus.gpio_mask = mpcsabus_gpio_mask; old_at91bus_tag = at91bus_tag; at91bus_tag = &mpcsabus; } /* Fake bootconfig structure for the benefit of pmap.c */ /* XXX must make the memory description h/w independent */ bootconfig.dramblocks = 1; bootconfig.dram[0].address = 0x20000000UL; bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE; ret = at91bus_setup(&bootconfig); if (AT91_CHIP_ID() != AT91RM9200_CHIP_ID) panic("%s: processor is not AT91RM9200", __FUNCTION__); /* we've a specific device_register routine */ evbarm_device_register = mpcsa_device_register; /* We return the new stack pointer address */ return ret; } bus_dma_tag_t at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) { int i; struct arm32_bus_dma_tag *dmat; for (i = 0; i < bootconfig.dramblocks; i++) { mpcsa_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; mpcsa_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; mpcsa_dma_ranges[i].dr_len = bootconfig.dram[i].pages * PAGE_SIZE; } dmat = dma_tag_template; dmat->_ranges = mpcsa_dma_ranges; dmat->_nranges = bootconfig.dramblocks; return dmat; } void mpcsabus_init(struct at91bus_clocks *clocks) { (*old_at91bus_tag->init)(clocks); } uint32_t mpcsabus_gpio_mask(int pid) { switch (pid) { case PID_PIOA: return ~0x00000300U; case PID_PIOB: return ~0x0000783FU; case PID_PIOC: return ~0x00000000U; case PID_PIOD: return ~0x0003F000U; default: return ~0x00000000U; } } void mpcsabus_peripheral_clock(int pid, int enable) { switch (pid) { case PID_TWI: if (enable) { PIOA_WRITE(PIO_ASR, 0x06000000); // assign to peripheral A PIOA_WRITE(PIO_PDR, 0x06000000); // assign to peripherals PIOA_WRITE(PIO_MDER, 0x06000000); // I2C pins in open-drain mode } break; case PID_SPI: if (enable) { PIOA_WRITE(PIO_ASR, 0x00000007); // assign to peripheral A PIOA_WRITE(PIO_PDR, 0x00000007); // assign to peripherals } break; } (*old_at91bus_tag->peripheral_clock)(pid, enable); } static void mpcsa_device_register(device_t dev, void *aux) { static uint8_t eth_addr[ETHER_ADDR_LEN]; if (device_is_a(dev, "at91emac")) { cfdriver_t cd = config_cfdriver_lookup("at91twi"); device_t twi_dev = 0; i2c_tag_t i2c = 0; if (cd && (twi_dev = device_lookup(cd, 0)) != NULL) { struct at91twi_softc *sc = device_private(twi_dev); i2c = &sc->sc_i2c; } if (i2c && seeprom_bootstrap_read(i2c, 0x50, 0x00, 4096, eth_addr, ETHER_ADDR_LEN) == 0) { prop_data_t pd = prop_data_create_data_nocopy( eth_addr, ETHER_ADDR_LEN); KASSERT(pd != NULL); if (prop_dictionary_set(device_properties(dev), "mac-address", pd) == FALSE) { printf("WARNING: unable to set mac-addr property " "for %s\n", device_xname(dev)); } } else { printf("%s: WARNING: unable to read MAC address from SEEPROM\n", device_xname(dev)); } } }