/* $NetBSD: consinit.c,v 1.44 2025/11/29 01:33:40 manu Exp $ */ /* * Copyright (c) 1998 * Matthias Drochner. 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. * * 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: consinit.c,v 1.44 2025/11/29 01:33:40 manu Exp $"); #include "opt_kgdb.h" #include "opt_puc.h" #include "opt_xen.h" #include #include #include #include #include #include #include #include #include "nullcons.h" #include "genfb.h" #include "vga.h" #include "ega.h" #include "pcdisplay.h" #include "com_puc.h" #if (NVGA > 0) || (NEGA > 0) || (NPCDISPLAY > 0) #include #include #if (NVGA > 0) #include #include #endif #if (NEGA > 0) #include #endif #if (NPCDISPLAY > 0) #include #endif #endif #include "pckbc.h" #if (NPCKBC > 0) #include #include #include #include #endif #include "pckbd.h" /* for pckbc_machdep_cnattach */ #if (NGENFB > 0) #include #endif #include "com.h" #if (NCOM > 0) #include #include #include #endif #if (NCOM_PUC > 0) #include #endif #include "ucom.h" #if (NUCOM > 0) #include #endif #include "ukbd.h" #if (NUKBD > 0) #include #endif #ifndef XENPV #include "hvkbd.h" #if NHVKBD > 0 #include #endif #endif #ifdef XENPVHVM #include #include #endif #ifndef CONSDEVNAME #define CONSDEVNAME "pc" #endif #if (NCOM > 0) #ifndef CONADDR #define CONADDR 0x3f8 #endif #ifndef CONSPEED #define CONSPEED TTYDEF_SPEED #endif #ifndef CONMODE #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif int comcnmode = CONMODE; #endif /* NCOM */ const struct btinfo_console default_consinfo = { {0, 0}, CONSDEVNAME, #if (NCOM > 0) CONADDR, CONSPEED #else 0, 0 #endif }; #ifdef KGDB #ifndef KGDB_DEVNAME #define KGDB_DEVNAME "com" #endif const char kgdb_devname[] = KGDB_DEVNAME; #if (NCOM > 0) #ifndef KGDB_DEVADDR #define KGDB_DEVADDR 0x3f8 #endif int comkgdbaddr = KGDB_DEVADDR; #ifndef KGDB_DEVRATE #define KGDB_DEVRATE TTYDEF_SPEED #endif int comkgdbrate = KGDB_DEVRATE; #ifndef KGDB_DEVMODE #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif int comkgdbmode = KGDB_DEVMODE; #endif /* NCOM */ #endif /* KGDB */ /* * consinit: * initialize the system console. * XXX - shouldn't deal with this initted thing, but then, * it shouldn't be called from init386 either. */ void consinit(void) { const struct btinfo_console *consinfo; #if (NGENFB > 0) const struct btinfo_framebuffer *fbinfo = NULL; #endif static int initted; #if (NCOM > 0) int rv; #endif char console_devname[16] = ""; #ifdef XENPVHVM if (vm_guest == VM_GUEST_XENPVH) { if (xen_pvh_consinit() != 0) return; /* fallback to native console selection, useful for dom0 PVH */ } if (pvh_boot) { /* GENPVH */ union xen_cmdline_parseinfo xcp; /* get console= parameter from generic PVH VMM */ xen_parse_cmdline(XEN_PARSE_CONSOLE, &xcp); strncpy(console_devname, xcp.xcp_console, sizeof(console_devname)); } #endif if (initted) return; initted = 1; #ifndef CONS_OVERRIDE consinfo = lookup_bootinfo(BTINFO_CONSOLE); if (!consinfo) #endif consinfo = &default_consinfo; /* console= parameter was not passed via a generic PVH VMM */ if (!console_devname[0]) strncpy(console_devname, consinfo->devname, sizeof(console_devname)); #if (NGENFB > 0) #if defined(XENPVHVM) && defined(DOM0OPS) if (vm_guest == VM_GUEST_XENPVH && xendomain_is_dom0()) fbinfo = xen_genfb_getbtinfo(); else #endif /* XENPVHVM */ fbinfo = lookup_bootinfo(BTINFO_FRAMEBUFFER); #endif if (!strcmp(console_devname, "pc")) { int error; #if (NGENFB > 0) if (fbinfo && fbinfo->physaddr > 0) { /* * If we have a framebuffer address, and * x86_genfb_cnattach can map it, then * genfb_cnattach causes genfb_is_console to * later return true. device_pci_register will * use this to set up the device properties for * a PCI display-class device to notify it that * it has been selected as the console. */ if (x86_genfb_cnattach() == -1) { initted = 0; /* defer */ return; } genfb_cnattach(); goto dokbd; } genfb_disable(); #endif #if (NVGA > 0) if (!vga_cnattach(x86_bus_space_io, x86_bus_space_mem, -1, 1)) goto dokbd; #endif #if (NEGA > 0) if (!ega_cnattach(x86_bus_space_io, x86_bus_space_mem)) goto dokbd; #endif #if (NPCDISPLAY > 0) if (!pcdisplay_cnattach(x86_bus_space_io, x86_bus_space_mem)) goto dokbd; #endif if (0) goto dokbd; /* XXX stupid gcc */ dokbd: error = ENODEV; #if (NPCKBC > 0) error = pckbc_cnattach(x86_bus_space_io, IO_KBD, KBCMDP, PCKBC_KBD_SLOT, 0); #endif #if (NHVKBD > 0) if (error && vm_guest == VM_GUEST_HV) error = hvkbd_cnattach(); #endif #if (NUKBD > 0) if (error) error = ukbd_cnattach(); #endif if (error) printf("WARNING: no console keyboard, error=%d\n", error); return; } #if (NCOM > 0) if (!strcmp(console_devname, "com")) { int addr = consinfo->addr; int speed = consinfo->speed; #if (NCOM_PUC > 0) && defined(PUC_CNAUTO) puc_cnprobe(NULL); rv = puc_cninit(NULL); if (rv == 0) return; #endif if (addr == 0) addr = CONADDR; if (speed == 0) speed = CONSPEED; rv = comcnattach(x86_bus_space_io, addr, speed, COM_FREQ, COM_TYPE_NORMAL, comcnmode); if (rv != 0) panic("can't init serial console @%x", consinfo->addr); return; } #endif #if (NUCOM > 0) if (!strcmp(console_devname, "ucom")) { int unit = consinfo->addr; int speed = consinfo->speed; if (ucom_cnattach(unit, speed) != 0) panic("can't init console %s", console_devname); return; } #endif #if (NNULLCONS > 0) if (!strcmp(console_devname, "nullcons")) { void nullcninit(struct consdev *cn); nullcninit(0); return; } #endif panic("invalid console device %s", console_devname); } #ifdef KGDB void kgdb_port_init(void) { #if (NCOM > 0) if (!strcmp(kgdb_devname, "com")) { com_kgdb_attach(x86_bus_space_io, comkgdbaddr, comkgdbrate, COM_FREQ, COM_TYPE_NORMAL, comkgdbmode); } #endif } #endif