/* $NetBSD: autoconf.c,v 1.11 2023/10/14 08:05:25 andvar Exp $ */ /* * Copyright (c) 1994 Christian E. Hopps * 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 Christian E. Hopps. * 4. The name of the author may not 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 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: autoconf.c,v 1.11 2023/10/14 08:05:25 andvar Exp $"); #include #include #include #include #include #include #include /* XXX autoconf abuse */ #include #include #include #include #include #include #include #include static void findroot(void); u_long boot_partition; int amiga_realconfig; /* * called at boot time, configure all devices on system */ void cpu_configure(void) { /* * this is the real thing baby (i.e. not console init) */ amiga_realconfig = 1; custom.intena = INTF_INTEN; if (config_rootfound("mainbus", NULL) == NULL) panic("configure: mainbus not configured"); #ifdef DEBUG_KERNEL_START printf("survived autoconf, going to enable interrupts\n"); #endif genppc_cpu_configure(); custom.intena = INTF_SETCLR | INTF_INTEN; #ifdef DEBUG_KERNEL_START printf("survived configure...\n"); #endif } void cpu_rootconf(void) { findroot(); #ifdef DEBUG_KERNEL_START printf("survived findroot()\n"); #endif rootconf(); } /*ARGSUSED*/ int simple_devprint(void *aux, const char *pnp) { return QUIET; } int matchname(const char *fp, const char *sp) { int len; len = strlen(fp); if (strlen(sp) != len) return 0; if (bcmp(fp, sp, len) == 0) return 1; return 0; } /* * use config_search_ia to find appropriate device, then call that device * directly with NULL device variable storage. A device can then * always tell the difference between the real and console init * by checking for NULL. */ int amiga_config_found(cfdata_t pcfp, device_t parent, void *aux, cfprint_t pfn, const struct cfargs *cfargs) { struct device temp; cfdata_t cf; const struct cfattach *ca; int rv = 0; if (amiga_realconfig) { rv = config_found(parent, aux, pfn, cfargs) != NULL; goto out; } if (parent == NULL) { memset(&temp, 0, sizeof temp); parent = &temp; } parent->dv_cfdata = pcfp; parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name); parent->dv_unit = pcfp->cf_unit; if ((cf = config_search(parent, aux, cfargs)) != NULL) { ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); if (ca != NULL) { (*ca->ca_attach)(parent, NULL, aux); rv = 1; } } parent->dv_cfdata = NULL; out: return rv; } /* * this function needs to get enough configured to do a console * basically this means start attaching the grfxx's that support * the console. Kinda hacky but it works. */ void config_console(void) { cfdata_t cf; config_init(); /* * we need mainbus' cfdata. */ cf = config_rootsearch(NULL, "mainbus", NULL); if (cf == NULL) panic("no mainbus"); /* * internal grf. */ amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL, CFARGS_NONE); /* * zbus knows when its not for real and will * only configure the appropriate hardware */ amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL, CFARGS_NONE); } /* * The system will assign the "booted device" indicator (and thus * rootdev if rootspec is wildcarded) to the first partition 'a' * in preference of boot. However, it does walk unit backwards * to remain compatible with the old Amiga method of picking the * last root found. */ #include /* XXXX and all that uses it */ #include /* XXXX and all that uses it */ #include "fd.h" #include "sd.h" #include "cd.h" #include "wd.h" #if NFD > 0 extern struct cfdriver fd_cd; extern const struct bdevsw fd_bdevsw; #endif #if NSD > 0 extern struct cfdriver sd_cd; extern const struct bdevsw sd_bdevsw; #endif #if NCD > 0 extern struct cfdriver cd_cd; extern const struct bdevsw cd_bdevsw; #endif #if NWD > 0 extern struct cfdriver wd_cd; extern const struct bdevsw wd_bdevsw; #endif struct cfdriver *genericconf[] = { #if NFD > 0 &fd_cd, #endif #if NSD > 0 &sd_cd, #endif #if NWD > 0 &wd_cd, #endif #if NCD > 0 &cd_cd, #endif NULL, }; void findroot(void) { struct disk *dkp; struct partition *pp; device_t*devs; int i, maj, unit; const struct bdevsw *bdp; #if NSD > 0 /* * If we have the boot partition offset (boot_partition), try * to locate the device corresponding to that partition. */ #ifdef DEBUG_KERNEL_START printf("Boot partition offset is %ld\n", boot_partition); #endif if (boot_partition != 0) { for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) { #ifdef DEBUG_KERNEL_START printf("probing for sd%d\n", unit); #endif if (sd_cd.cd_devs[unit] == NULL) continue; /* * Find the disk corresponding to the current * device. */ devs = sd_cd.cd_devs; if ((dkp = disk_find(device_xname(devs[unit]))) == NULL) continue; if (dkp->dk_driver == NULL || dkp->dk_driver->d_strategy == NULL) continue; bdp = &sd_bdevsw; maj = bdevsw_lookup_major(bdp); if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART), FREAD | FNONBLOCK, 0, curlwp)) continue; (*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART), FREAD | FNONBLOCK, 0, curlwp); pp = &dkp->dk_label->d_partitions[0]; for (i = 0; i < dkp->dk_label->d_npartitions; i++, pp++) { #ifdef DEBUG_KERNEL_START printf("sd%d%c type %d offset %d size %d\n", unit, i+'a', pp->p_fstype, pp->p_offset, pp->p_size); #endif if (pp->p_size == 0 || (pp->p_fstype != FS_BSDFFS && pp->p_fstype != FS_SWAP)) continue; if (pp->p_offset == boot_partition) { if (booted_device == NULL) { booted_device = devs[unit]; booted_partition = i; } else printf("Ambiguous boot device\n"); } } } } if (booted_device != NULL) return; /* we found the boot device */ #endif for (i = 0; genericconf[i] != NULL; i++) { for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) { if (genericconf[i]->cd_devs[unit] == NULL) continue; /* * Find the disk structure corresponding to the * current device. */ devs = genericconf[i]->cd_devs; if ((dkp = disk_find(device_xname(devs[unit]))) == NULL) continue; if (dkp->dk_driver == NULL || dkp->dk_driver->d_strategy == NULL) continue; bdp = NULL; #if NFD > 0 if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy) bdp = &fd_bdevsw; #endif #if NSD > 0 if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy) bdp = &sd_bdevsw; #endif #if NWD > 0 if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy) bdp = &wd_bdevsw; #endif #if NCD > 0 if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy) bdp = &cd_bdevsw; #endif #ifdef DIAGNOSTIC if (bdp == NULL) panic("findroot: impossible"); #endif maj = bdevsw_lookup_major(bdp); /* Open disk; forces read of disklabel. */ if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, 0), FREAD|FNONBLOCK, 0, &lwp0)) continue; (void)(*bdp->d_close)(MAKEDISKDEV(maj, unit, 0), FREAD|FNONBLOCK, 0, &lwp0); pp = &dkp->dk_label->d_partitions[0]; if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) { booted_device = devs[unit]; booted_partition = 0; return; } } } } /* * Try to determine, if this machine is an A3000, which has a builtin * realtime clock and scsi controller, so that this hardware is only * included as "configured" if this IS an A3000 */ int a3000_flag = 1; /* patchable */ #ifdef A4000 int a4000_flag = 1; /* patchable - default to A4000 */ #else int a4000_flag = 0; /* patchable */ #endif int is_a3000(void) { /* this is a dirty kludge.. but how do you do this RIGHT ? :-) */ extern long boot_fphystart; short sc; if ((machineid >> 16) == 3000) return 1; /* It's an A3000 */ if (machineid >> 16) return 0; /* It's not an A3000 */ /* Machine type is unknown, so try to guess it */ /* where is fastram on the A4000 ?? */ /* if fastram is below 0x07000000, assume it's not an A3000 */ if (boot_fphystart < 0x07000000) return 0; /* * OK, fastram starts at or above 0x07000000, check specific * machines */ for (sc = 0; sc < ncfdev; sc++) { switch (cfdev[sc].rom.manid) { case 2026: /* Progressive Peripherals, Inc */ switch (cfdev[sc].rom.prodid) { case 0: /* PPI Mercury - A3000 */ case 1: /* PP&S A3000 '040 */ return 1; case 150: /* PPI Zeus - it's an A2000 */ case 105: /* PP&S A2000 '040 */ case 187: /* PP&S A500 '040 */ return 0; } break; case 2112: /* IVS */ switch (cfdev[sc].rom.prodid) { case 242: return 0; /* A2000 accelerator? */ } break; } } return a3000_flag; /* XXX let flag tell now */ } int is_a4000(void) { if ((machineid >> 16) == 4000) return 1; /* It's an A4000 */ if ((machineid >> 16) == 1200) return 0; /* It's an A1200, so not A4000 */ /* Do I need this any more? */ if ((custom.deniseid & 0xff) == 0xf8) return 1; #ifdef DEBUG if (a4000_flag) printf("Denise ID = %04x\n", (unsigned short)custom.deniseid); #endif if (machineid >> 16) return 0; /* It's not an A4000 */ return a4000_flag; /* Machine type not set */ } int is_a1200(void) { if ((machineid >> 16) == 1200) return 1; /* It's an A1200 */ return 0; /* Machine type not set */ }