From owner-svn-src-stable-7@FreeBSD.ORG Wed Jun 23 17:56:52 2010 Return-Path: Delivered-To: svn-src-stable-7@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2A2B91065680; Wed, 23 Jun 2010 17:56:52 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id F37F28FC0A; Wed, 23 Jun 2010 17:56:51 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o5NHupIG038394; Wed, 23 Jun 2010 17:56:51 GMT (envelope-from jhb@svn.freebsd.org) Received: (from jhb@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id o5NHupNh038374; Wed, 23 Jun 2010 17:56:51 GMT (envelope-from jhb@svn.freebsd.org) Message-Id: <201006231756.o5NHupNh038374@svn.freebsd.org> From: John Baldwin Date: Wed, 23 Jun 2010 17:56:51 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org X-SVN-Group: stable-7 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r209475 - stable/7/sys/boot/i386/zfsboot X-BeenThere: svn-src-stable-7@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for only the 7-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jun 2010 17:56:52 -0000 Author: jhb Date: Wed Jun 23 17:56:51 2010 New Revision: 209475 URL: http://svn.freebsd.org/changeset/base/209475 Log: MFC 208388: - Set 'dmadat' earlier so that we properly setup the heap if we fail to locate a high memory area for the heap using the SMAP. - Read the number of hard drive devices from the BIOS instead of hardcoding a limit of 128. Some BIOSes duplicate disk devices once you get beyond the maximum drive number. Modified: stable/7/sys/boot/i386/zfsboot/zfsboot.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/boot/i386/zfsboot/zfsboot.c ============================================================================== --- stable/7/sys/boot/i386/zfsboot/zfsboot.c Wed Jun 23 17:56:20 2010 (r209474) +++ stable/7/sys/boot/i386/zfsboot/zfsboot.c Wed Jun 23 17:56:51 2010 (r209475) @@ -94,6 +94,7 @@ __FBSDID("$FreeBSD$"); #define V86_CY(x) ((x) & 1) #define V86_ZR(x) ((x) & 0x40) +#define BIOS_NUMDRIVES 0x475 #define DRV_HARD 0x80 #define DRV_MASK 0x7f @@ -467,6 +468,7 @@ getstr(void) static inline void putc(int c) { + v86.ctl = 0; v86.addr = 0x10; v86.eax = 0xe00 | (c & 0xff); v86.ebx = 0x7; @@ -617,6 +619,8 @@ main(void) off_t off; struct dsk *dsk; + dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); + bios_getmem(); if (high_heap_size > 0) { @@ -627,9 +631,6 @@ main(void) heap_end = (char *) PTOV(bios_basemem); } - dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); - v86.ctl = V86_FLAGS; - dsk = malloc(sizeof(struct dsk)); dsk->drive = *(uint8_t *)PTOV(ARGS); dsk->type = dsk->drive & DRV_HARD ? TYPE_AD : TYPE_FD; @@ -666,7 +667,7 @@ main(void) * will find any other available pools and it may fill in missing * vdevs for the boot pool. */ - for (i = 0; i < 128; i++) { + for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++) { if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS)) continue; @@ -1157,6 +1158,7 @@ getc(int fn) * when no such key is pressed in reality. As far as I can tell, * this only happens shortly after a reboot. */ + v86.ctl = V86_FLAGS; v86.addr = 0x16; v86.eax = fn << 8; v86int();