From owner-svn-src-head@FreeBSD.ORG Sun Oct 24 03:20:55 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 59A76106564A; Sun, 24 Oct 2010 03:20:55 +0000 (UTC) (envelope-from nyan@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 3C6D08FC1A; Sun, 24 Oct 2010 03:20:55 +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 o9O3KtQ5014106; Sun, 24 Oct 2010 03:20:55 GMT (envelope-from nyan@svn.freebsd.org) Received: (from nyan@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id o9O3KtCM014104; Sun, 24 Oct 2010 03:20:55 GMT (envelope-from nyan@svn.freebsd.org) Message-Id: <201010240320.o9O3KtCM014104@svn.freebsd.org> From: Takahashi Yoshihiro Date: Sun, 24 Oct 2010 03:20:55 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r214258 - head/sys/pc98/pc98 X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Oct 2010 03:20:55 -0000 Author: nyan Date: Sun Oct 24 03:20:54 2010 New Revision: 214258 URL: http://svn.freebsd.org/changeset/base/214258 Log: MFi386: the part of revision 213226. Rewrite the i386 memory probe: - Move the base memory setup into a new basemem_setup() routine. MFC after: 1 week Modified: head/sys/pc98/pc98/machdep.c Modified: head/sys/pc98/pc98/machdep.c ============================================================================== --- head/sys/pc98/pc98/machdep.c Sun Oct 24 02:59:02 2010 (r214257) +++ head/sys/pc98/pc98/machdep.c Sun Oct 24 03:20:54 2010 (r214258) @@ -1776,52 +1776,13 @@ sdtossd(sd, ssd) ssd->ssd_gran = sd->sd_gran; } -/* - * Populate the (physmap) array with base/bound pairs describing the - * available physical memory in the system, then test this memory and - * build the phys_avail array describing the actually-available memory. - * - * If we cannot accurately determine the physical memory map, then use - * value from the 0xE801 call, and failing that, the RTC. - * - * Total memory size may be set by the kernel environment variable - * hw.physmem or the compile-time define MAXMEM. - * - * XXX first should be vm_paddr_t. - */ static void -getmemsize(int first) +basemem_setup(void) { - int i, off, physmap_idx, pa_indx, da_indx; - int pg_n; - u_long physmem_tunable; - u_int extmem; - u_int under16; - vm_paddr_t pa, physmap[PHYSMAP_SIZE]; + vm_paddr_t pa; pt_entry_t *pte; - quad_t dcons_addr, dcons_size; - - bzero(physmap, sizeof(physmap)); - - /* XXX - some of EPSON machines can't use PG_N */ - pg_n = PG_N; - if (pc98_machine_type & M_EPSON_PC98) { - switch (epson_machine_id) { -#ifdef WB_CACHE - default: -#endif - case EPSON_PC486_HX: - case EPSON_PC486_HG: - case EPSON_PC486_HA: - pg_n = 0; - break; - } - } + int i; - /* - * Perform "base memory" related probes & setup - */ - under16 = pc98_getmemsize(&basemem, &extmem); if (basemem > 640) { printf("Preposterous BIOS basemem of %uK, truncating to 640K\n", basemem); @@ -1853,12 +1814,62 @@ getmemsize(int first) pmap_kenter(KERNBASE + pa, pa); /* - * if basemem != 640, map pages r/w into vm86 page table so - * that the bios can scribble on it. + * Map pages between basemem and ISA_HOLE_START, if any, r/w into + * the vm86 page table so that vm86 can scribble on them using + * the vm86 map too. XXX: why 2 ways for this and only 1 way for + * page 0, at least as initialized here? */ pte = (pt_entry_t *)vm86paddr; for (i = basemem / 4; i < 160; i++) pte[i] = (i << PAGE_SHIFT) | PG_V | PG_RW | PG_U; +} + +/* + * Populate the (physmap) array with base/bound pairs describing the + * available physical memory in the system, then test this memory and + * build the phys_avail array describing the actually-available memory. + * + * If we cannot accurately determine the physical memory map, then use + * value from the 0xE801 call, and failing that, the RTC. + * + * Total memory size may be set by the kernel environment variable + * hw.physmem or the compile-time define MAXMEM. + * + * XXX first should be vm_paddr_t. + */ +static void +getmemsize(int first) +{ + int off, physmap_idx, pa_indx, da_indx; + u_long physmem_tunable; + vm_paddr_t physmap[PHYSMAP_SIZE]; + pt_entry_t *pte; + quad_t dcons_addr, dcons_size; + int i; + int pg_n; + u_int extmem; + u_int under16; + vm_paddr_t pa; + + bzero(physmap, sizeof(physmap)); + + /* XXX - some of EPSON machines can't use PG_N */ + pg_n = PG_N; + if (pc98_machine_type & M_EPSON_PC98) { + switch (epson_machine_id) { +#ifdef WB_CACHE + default: +#endif + case EPSON_PC486_HX: + case EPSON_PC486_HG: + case EPSON_PC486_HA: + pg_n = 0; + break; + } + } + + under16 = pc98_getmemsize(&basemem, &extmem); + basemem_setup(); physmap[0] = 0; physmap[1] = basemem * 1024;