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efibootia32.c revision 1.8 
      1 /*	$NetBSD: efibootia32.c,v 1.8 2023/06/19 04:30:27 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2016 Kimihiro Nonaka <nonaka (at) netbsd.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include "efiboot.h"
     30 
     31 #include <sys/bootblock.h>
     32 
     33 void startprog32_start(physaddr_t, uint32_t, uint32_t *, physaddr_t,
     34     physaddr_t, physaddr_t, u_long, void *);
     35 extern void (*startprog32)(physaddr_t, uint32_t, uint32_t *, physaddr_t,
     36     physaddr_t, physaddr_t, u_long, void *);
     37 extern u_int startprog32_size;
     38 
     39 void multiboot32_start(physaddr_t, physaddr_t, uint32_t);
     40 extern void (*multiboot32)(physaddr_t, physaddr_t, uint32_t);
     41 extern u_int multiboot32_size;
     42 
     43 void
     44 efi_md_init(void)
     45 {
     46 	EFI_STATUS status;
     47 	EFI_PHYSICAL_ADDRESS addr = EFI_ALLOCATE_MAX_ADDRESS;
     48 	u_int sz = EFI_SIZE_TO_PAGES(startprog32_size);
     49 
     50 	addr = EFI_ALLOCATE_MAX_ADDRESS;
     51 	sz = EFI_SIZE_TO_PAGES(startprog32_size);
     52 	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
     53 	    EfiLoaderData, sz, &addr);
     54 	if (EFI_ERROR(status))
     55 		panic("%s: AllocatePages() failed: %d page(s): %" PRIxMAX,
     56 		    __func__, sz, (uintmax_t)status);
     57 	startprog32 = (void *)(u_long)addr;
     58 	CopyMem(startprog32, startprog32_start, startprog32_size);
     59 
     60 	addr = EFI_ALLOCATE_MAX_ADDRESS;
     61 	sz = EFI_SIZE_TO_PAGES(multiboot32_size);
     62 	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
     63 	    EfiLoaderData, sz, &addr);
     64 	if (EFI_ERROR(status))
     65 		panic("%s: AllocatePages() failed: %d page(s): %" PRIxMAX,
     66 		    __func__, sz, (uintmax_t)status);
     67 	multiboot32 = (void *)(u_long)addr;
     68 	CopyMem(multiboot32, multiboot32_start, multiboot32_size);
     69 }
     70 
     71 /* ARGSUSED */
     72 void
     73 startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
     74 {
     75 
     76 	(*startprog32)(entry, argc, argv,
     77 	    (physaddr_t)startprog32 + startprog32_size,
     78 	    efi_kernel_start, efi_load_start,
     79 	    efi_kernel_size, startprog32);
     80 }
     81 
     82 /* ARGSUSED */
     83 void
     84 multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp, uint32_t magic)
     85 {
     86 	(*multiboot32)(entry, header, magic);
     87 }
     88