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File: [local] / sys / arch / sh / sh / db_memrw.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:58 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 1.1.1.1 2006/10/06 21:02:55 miod Exp $ */ /* $NetBSD: db_memrw.c,v 1.8 2006/02/24 00:57:19 uwe 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 * 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 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. */ #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <sys/stdint.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 = (char *)addr; /* properly aligned 4-byte */ if (size == 4 && ((addr & 3) == 0) && (((uintptr_t)data & 3) == 0)) { *(uint32_t *)data = *(uint32_t *)src; return; } /* properly aligned 2-byte */ if (size == 2 && ((addr & 1) == 0) && (((uintptr_t)data & 1) == 0)) { *(uint16_t *)data = *(uint16_t *)src; return; } 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 = (char *)addr; /* properly aligned 4-byte */ if (size == 4 && ((addr & 3) == 0) && (((uintptr_t)data & 3) == 0)) { *(uint32_t *)dst = *(const uint32_t *)data; return; } /* properly aligned 2-byte */ if (size == 2 && ((addr & 1) == 0) && (((uintptr_t)data & 1) == 0)) { *(uint16_t *)dst = *(const uint16_t *)data; return; } while (size-- > 0) *dst++ = *data++; }