/* $NetBSD: machdep.c,v 1.3 2021/09/19 11:37:00 andvar Exp $ */ /* * Taken from src/sys/arch/evbppc/walnut/machdep.c: * NetBSD: machdep.c,v 1.67 2021/03/30 05:08:16 rin Exp */ /* * Copyright 2001, 2002 Wasabi Systems, Inc. * All rights reserved. * * Written by Eduardo Horvath and Simon Burge 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) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * 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 TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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: machdep.c,v 1.3 2021/09/19 11:37:00 andvar Exp $"); #include "opt_ddb.h" #include "opt_pci.h" #include <sys/param.h> #include <sys/bus.h> #include <sys/device.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/reboot.h> #include <sys/systm.h> #include <machine/dht.h> #include <powerpc/spr.h> #include <powerpc/ibm4xx/spr.h> #include <powerpc/ibm4xx/cpu.h> #include <powerpc/ibm4xx/dcr4xx.h> #include <powerpc/ibm4xx/ibm405gp.h> #include <powerpc/ibm4xx/openbios.h> #include <powerpc/ibm4xx/tlb.h> #include "com.h" #if NCOM > 0 #include <sys/termios.h> #include <dev/ic/comreg.h> #include <dev/ic/comvar.h> #include <powerpc/ibm4xx/dev/comopbvar.h> #ifndef CONADDR #define CONADDR IBM405GP_UART0_BASE #endif #ifndef CONSPEED #define CONSPEED B115200 #endif #ifndef CONMODE #define CONMODE TTYDEF_CFLAG #endif #endif /* NCOM > 0 */ #include "emac.h" #if NEMAC > 0 #include <net/if_ether.h> #endif #include "pci.h" #if NPCI > 0 #ifndef PCI_NETBSD_CONFIGURE #error options PCI_NETBSD_CONFIGURE is mandatory. #endif #include <powerpc/ibm4xx/pci_machdep.h> #include <dev/pci/pciconf.h> #include <dev/pci/pcivar.h> #endif #define TLB_PG_SIZE (16 * 1024 * 1024) static u_int memsize; void initppc(vaddr_t, vaddr_t, char *, void *); /* * Get memory size from SDRAM bank register. */ static u_int dht_memsize(void) { u_int total = 0; uint32_t val, addr; for (addr = DCR_SDRAM0_B0CR; addr <= DCR_SDRAM0_B3CR; addr += 4) { mtdcr(DCR_SDRAM0_CFGADDR, addr); val = mfdcr(DCR_SDRAM0_CFGDATA); if (val & SDRAM0_BnCR_EN) total += SDRAM0_BnCR_SZ(val); } return total; } void consinit(void) { #if NCOM > 0 com_opb_cnattach(DHT_COM_FREQ, CONADDR, CONSPEED, CONMODE); #endif } void initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) { /* Disable all external interrupts */ mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0); memsize = dht_memsize(); /* Linear map kernel memory */ for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE) ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); /* Map console after physmem (see pmap_tlbmiss()) */ ppc4xx_tlb_reserve(IBM405GP_UART0_BASE, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE, TLB_I | TLB_G); /* Disable all timers */ mtspr(SPR_TCR, 0); ibm40x_memsize_init(memsize, startkernel); ibm4xx_init(startkernel, endkernel, pic_ext_intr); #ifdef DDB if (boothowto & RB_KDB) Debugger(); #endif } void cpu_startup(void) { prop_number_t pn; ibm4xx_cpu_startup("DHT Walnut 405GP Evaluation Board"); /* * Set up the board properties database. */ board_info_init(); pn = prop_number_create_integer(DHT_CPU_FREQ); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "processor-frequency", pn) == false) panic("setting processor-frequency"); prop_object_release(pn); pn = prop_number_create_integer(memsize); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "mem-size", pn) == false) panic("setting mem-size"); prop_object_release(pn); #if NEMAC > 0 /* * XXX * Unfortunately, no MAC address is assigned to this board. * Set fake address de:ad:be:ef:00:00. * * XXX * This should be same with what U-Boot/PPC-Boot set. */ static uint8_t enaddr[ETHER_ADDR_LEN]; enaddr[0] = 0xde; enaddr[1] = 0xad; enaddr[2] = 0xbe; enaddr[3] = 0xef; enaddr[4] = 0x00; enaddr[5] = 0x00; prop_data_t pd = prop_data_create_data_nocopy(enaddr, ETHER_ADDR_LEN); KASSERT(pd != NULL); if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == false) panic("setting emac0-mac-addr"); prop_object_release(pd); #endif /* * Now that we have VM, malloc()s are OK in bus_space. */ bus_space_mallocok(); /* * No fake mapiodev. */ fake_mapiodev = 0; } #if NPCI > 0 int ibm4xx_pci_bus_maxdevs(void *v, int busno) { return 32; } /* * This is only possible mapping known to work b/w PCI devices and IRQ pins. */ #define DEV_TO_IRQ(dev) (27 + (dev)) #define PARENT_DEV(swiz, dev) ((swiz) - (dev)) int ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { int pin = pa->pa_intrpin, bus = pa->pa_bus, dev = pa->pa_device; if (pin <= 0 || pin > 4) goto bad; if (bus != 0) { /* * XXX * We only support ppb(4) directly attached to pci0. */ dev = PARENT_DEV(pa->pa_intrswiz, dev); goto out; } switch (dev) { case 2: case 3: case 4: out: *ihp = DEV_TO_IRQ(dev); return 0; default: bad: printf("%s: invalid request: bus %d dev %d pin %d\n", __func__, bus, dev, pin); *ihp = -1; return 1; } } void ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz, int *iline) { if (bus != 0) { /* * XXX * See comment above. */ dev = PARENT_DEV(swiz, dev); goto out; } switch (dev) { case 2: case 3: case 4: out: *iline = DEV_TO_IRQ(dev); break; default: printf("%s: invalid request: bus %d dev %d pin %d swiz %d\n", __func__, bus, dev, pin, swiz); *iline = 0; break; } } #endif /* NPCI > 0 */
