Return to db_memrw.c CVS log | Up to [local] / sys / arch / powerpc / ddb |
File: [local] / sys / arch / powerpc / ddb / db_memrw.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:07:48 2008 UTC (16 years, 5 months ago) by nbrk
Import of OpenBSD 4.2 release kernel tree with initial code to support Jornada 720/728, StrongARM 1110-based handheld PC. At this point kernel roots on NFS and boots into vfs_mountroot() and traps. What is supported: - glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode (needs some palette tweaks for non black/white/blue colors, i think) - saic, SA11x0 interrupt controller (needs cleanup) - sacom, SA11x0 UART (supported only as boot console for now) - SA11x0 GPIO controller fully supported (but can't handle multiple interrupt handlers on one gpio pin) - sassp, SSP port on SA11x0 that attaches spibus - Jornada microcontroller (jmcu) to control kbd, battery, etc throught the SPI bus (wskbd attaches on jmcu, but not tested) - tod functions seem work - initial code for SA-1111 (chip companion) : this is TODO Next important steps, i think: - gpio and intc on sa1111 - pcmcia support for sa11x0 (and sa1111 help logic) - REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs) - root on wd0! (using already supported PCMCIA-ATA) |
/* $NetBSD: db_memrw.c,v 1.4 2001/05/18 20:38:27 matt Exp $ */ /* $OpenBSD: db_memrw.c,v 1.5 2003/10/15 01:06:13 drahn Exp $ */ /* * Mach Operating System * Copyright (c) 1992 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* * Interface to the debugger for virtual memory read/write. * This is a simple version for kernels with writable text. * For an example of read-only kernel text, see the file: * sys/arch/sun3/sun3/db_memrw.c * * ALERT! If you want to access device registers with a * specific size, then the read/write functions have to * make sure to do the correct sized pointer access. */ #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <uvm/uvm_extern.h> #include <machine/db_machdep.h> #include <machine/pcb.h> #include <ddb/db_access.h> /* * Read bytes from kernel address space for debugger. */ void db_read_bytes(addr, size, data) vaddr_t addr; size_t size; char *data; { char *src = (char *)addr; faultbuf env; faultbuf *old_onfault = curpcb->pcb_onfault; if (setfault(&env)) { curpcb->pcb_onfault = old_onfault; return; } if (size == 4) { *((int *)data) = *((int *)src); } else if (size == 2) { *((short *)data) = *((short *)src); } else { while (size > 0) { --size; *data++ = *src++; } } curpcb->pcb_onfault = old_onfault; } /* * Write bytes to kernel address space for debugger. */ void db_write_bytes(addr, size, data) vaddr_t addr; size_t size; char *data; { char *dst = (char *)addr; faultbuf env; faultbuf *old_onfault = curpcb->pcb_onfault; if (setfault(&env)) { curpcb->pcb_onfault = old_onfault; return; } if (size == 4) { *((int *)dst) = *((int *)data); } else if (size == 2) { *((short *)dst) = *((short *)data); } else { while (size > 0) { --size; *dst++ = *data++; } } syncicache((void *)addr, size); curpcb->pcb_onfault = old_onfault; }