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efibootx64.c revision 1.2.2.2 
      1 /*	$NetBSD: efibootx64.c,v 1.2.2.2 2017/03/20 06:57:15 pgoyette 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 struct x86_boot_params boot_params;
     34 
     35 void startprog64_start(physaddr_t, physaddr_t, physaddr_t, u_long,
     36     void *, physaddr_t);
     37 extern void (*startprog64)(physaddr_t, physaddr_t, physaddr_t, u_long,
     38     void *, physaddr_t);
     39 extern u_int startprog64_size;
     40 
     41 void
     42 efi_md_init(void)
     43 {
     44 	EFI_STATUS status;
     45 	EFI_PHYSICAL_ADDRESS addr = EFI_ALLOCATE_MAX_ADDRESS;
     46 	u_int sz = EFI_SIZE_TO_PAGES(startprog64_size);
     47 
     48 	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress,
     49 	    EfiLoaderData, sz, &addr);
     50 	if (EFI_ERROR(status))
     51 		Panic(L"%a: AllocatePages() failed: %d page(s): %r",
     52 		    __func__, sz, status);
     53 	startprog64 = (void *)addr;
     54 	CopyMem(startprog64, startprog64_start, startprog64_size);
     55 }
     56 
     57 /* ARGSUSED */
     58 void
     59 startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp)
     60 {
     61 	uint32_t *newsp = (void *)((char *)startprog64 + startprog64_size);
     62 
     63 	/* Copy argv to new stack pointer */
     64 	if (argc > 0) {
     65 		newsp -= argc;
     66 		memcpy(newsp, argv, sizeof(*argv) * argc);
     67 	}
     68 
     69 	(*startprog64)(efi_kernel_start, efi_kernel_start + efi_loadaddr,
     70 	    (physaddr_t)newsp, efi_kernel_size, startprog64, entry);
     71 }
     72 
     73 /* ARGSUSED */
     74 void
     75 multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp)
     76 {
     77 	Panic(L"%a: not implemented", __func__);
     78 }
     79