Return to db_memrw.c CVS log | Up to [local] / sys / arch / i386 / i386 |
File: [local] / sys / arch / i386 / i386 / db_memrw.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:06:21 2008 UTC (16 years, 3 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) |
/* $OpenBSD: db_memrw.c,v 1.12 2007/02/20 21:15:01 tom Exp $ */ /* $NetBSD: db_memrw.c,v 1.6 1999/04/12 20:38:19 pk Exp $ */ /* * Mach Operating System * Copyright (c) 1991,1990 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. * * db_interface.c,v 2.4 1991/02/05 17:11:13 mrt (CMU) */ /* * Routines to read and write memory on behalf of the debugger, used * by DDB and KGDB. */ #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <uvm/uvm_extern.h> #include <machine/db_machdep.h> #include <ddb/db_access.h> /* * Read bytes from kernel address space for debugger. */ void db_read_bytes(vaddr_t addr, size_t size, char *data) { char *src; src = (char *)addr; while (size-- > 0) *data++ = *src++; } /* * Write bytes to kernel address space for debugger. */ void db_write_bytes(vaddr_t addr, size_t size, char *data) { char *dst; pt_entry_t *ptep0 = 0; pt_entry_t oldmap0 = { 0 }; vaddr_t addr1; pt_entry_t *ptep1 = 0; pt_entry_t oldmap1 = { 0 }; extern char etext; if (addr >= VM_MIN_KERNEL_ADDRESS && addr < (vaddr_t)&etext) { ptep0 = kvtopte(addr); oldmap0 = *ptep0; *(int *)ptep0 |= /* INTEL_PTE_WRITE */ PG_RW; addr1 = trunc_page(addr + size - 1); if (trunc_page(addr) != addr1) { /* data crosses a page boundary */ ptep1 = kvtopte(addr1); oldmap1 = *ptep1; *(int *)ptep1 |= /* INTEL_PTE_WRITE */ PG_RW; } tlbflush(); } dst = (char *)addr; while (size-- > 0) *dst++ = *data++; if (ptep0) { *ptep0 = oldmap0; if (ptep1) *ptep1 = oldmap1; tlbflush(); } }