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@ -1,6 +1,6 @@
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/* $NetBSD: bios32.c,v 1.1 2017/08/15 06:27:40 maxv Exp $ */
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/* $NetBSD: bios32.c,v 1.2 2017/08/15 06:37:50 maxv Exp $ */
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/*-
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/*
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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@ -41,18 +41,18 @@
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the developer may NOT be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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@ -86,11 +86,11 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bios32.c,v 1.1 2017/08/15 06:27:40 maxv Exp $");
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__KERNEL_RCSID(0, "$NetBSD: bios32.c,v 1.2 2017/08/15 06:37:50 maxv Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/device.h>
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#include <dev/isa/isareg.h>
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#include <machine/isa_machdep.h>
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@ -192,6 +192,55 @@ bios32_init(void)
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}
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}
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/*
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* Call BIOS32 to locate the specified BIOS32 service, and fill
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* in the entry point information.
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*/
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int
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bios32_service(uint32_t service, bios32_entry_t e, bios32_entry_info_t ei)
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{
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#ifdef i386
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uint32_t eax, ebx, ecx, edx;
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paddr_t entry;
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if (bios32_entry.offset == 0)
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return 0; /* BIOS32 not present */
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__asm volatile("lcall *(%%edi)"
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: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
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: "0" (service), "1" (0), "D" (&bios32_entry));
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if ((eax & 0xff) != 0)
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return 0; /* service not found */
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entry = ebx + edx;
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if (entry < BIOS32_START || entry >= BIOS32_END) {
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aprint_error("BIOS32: entry point for service %c%c%c%c is "
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"outside allowable range\n",
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service & 0xff,
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(service >> 8) & 0xff,
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(service >> 16) & 0xff,
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(service >> 24) & 0xff);
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return 0;
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}
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e->offset = (void *)ISA_HOLE_VADDR(entry);
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e->segment = GSEL(GCODE_SEL, SEL_KPL);
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ei->bei_base = ebx;
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ei->bei_size = ecx;
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ei->bei_entry = entry;
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#else
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(void)service;
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(void)e;
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(void)ei;
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panic("bios32_service not implemented on amd64");
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#endif
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return 1;
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}
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static int
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smbios2_check_header(const uint8_t *p)
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{
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@ -248,8 +297,7 @@ smbios2_map_kva(const uint8_t *p)
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pmap_update(pmap_kernel());
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aprint_debug("SMBIOS rev. %d.%d @ 0x%lx (%d entries)\n",
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sh->majrev, sh->minrev, (u_long)sh->addr,
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sh->count);
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sh->majrev, sh->minrev, (u_long)sh->addr, sh->count);
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}
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static int
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@ -302,57 +350,8 @@ smbios3_map_kva(const uint8_t *p)
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#endif
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pmap_update(pmap_kernel());
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aprint_debug("SMBIOS rev. %d.%d.%d @ 0x%lx\n",
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sh->majrev, sh->minrev, sh->docrev, (u_long)sh->addr);
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}
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/*
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* Call BIOS32 to locate the specified BIOS32 service, and fill
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* in the entry point information.
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*/
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int
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bios32_service(uint32_t service, bios32_entry_t e, bios32_entry_info_t ei)
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{
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#ifdef i386
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uint32_t eax, ebx, ecx, edx;
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paddr_t entry;
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if (bios32_entry.offset == 0)
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return (0); /* BIOS32 not present */
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__asm volatile("lcall *(%%edi)"
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: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
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: "0" (service), "1" (0), "D" (&bios32_entry));
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if ((eax & 0xff) != 0)
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return (0); /* service not found */
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entry = ebx + edx;
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if (entry < BIOS32_START || entry >= BIOS32_END) {
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aprint_error("BIOS32: entry point for service %c%c%c%c is "
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"outside allowable range\n",
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service & 0xff,
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(service >> 8) & 0xff,
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(service >> 16) & 0xff,
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(service >> 24) & 0xff);
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return (0);
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}
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e->offset = (void *)ISA_HOLE_VADDR(entry);
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e->segment = GSEL(GCODE_SEL, SEL_KPL);
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ei->bei_base = ebx;
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ei->bei_size = ecx;
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ei->bei_entry = entry;
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#else
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(void)service;
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(void)e;
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(void)ei;
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panic("bios32_service not implemented on amd64");
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#endif
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return (1);
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aprint_debug("SMBIOS rev. %d.%d.%d @ 0x%lx\n", sh->majrev,
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sh->minrev, sh->docrev, (u_long)sh->addr);
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}
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/*
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