1 /* $NetBSD: efibootx64.c,v 1.5 2019/09/13 02:19:46 manu Exp $ */ 2 3 /*- 4 * Copyright (c) 2016 Kimihiro Nonaka <nonaka@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 startprog64_start(physaddr_t, physaddr_t, physaddr_t, u_long, 34 void *, physaddr_t); 35 extern void (*startprog64)(physaddr_t, physaddr_t, physaddr_t, u_long, 36 void *, physaddr_t); 37 extern u_int startprog64_size; 38 39 void multiboot64_start(physaddr_t, physaddr_t, uint32_t); 40 extern void (*multiboot64)(physaddr_t, physaddr_t, uint32_t); 41 extern u_int multiboot64_size; 42 43 void 44 efi_md_init(void) 45 { 46 EFI_STATUS status; 47 EFI_PHYSICAL_ADDRESS addr; 48 u_int sz; 49 50 addr = EFI_ALLOCATE_MAX_ADDRESS; 51 sz = EFI_SIZE_TO_PAGES(startprog64_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 startprog64 = (void *)addr; 58 CopyMem(startprog64, startprog64_start, startprog64_size); 59 60 addr = EFI_ALLOCATE_MAX_ADDRESS; 61 sz = EFI_SIZE_TO_PAGES(multiboot64_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 multiboot64 = (void *)addr; 68 CopyMem(multiboot64, multiboot64_start, multiboot64_size); 69 } 70 71 /* ARGSUSED */ 72 void 73 startprog(physaddr_t entry, uint32_t argc, uint32_t *argv, physaddr_t sp) 74 { 75 uint32_t *newsp = (void *)((char *)startprog64 + startprog64_size); 76 77 /* Copy argv to new stack pointer */ 78 if (argc > 0) { 79 newsp -= argc; 80 memcpy(newsp, argv, sizeof(*argv) * argc); 81 } 82 83 (*startprog64)(efi_kernel_start, efi_kernel_start + efi_loadaddr, 84 (physaddr_t)newsp, efi_kernel_size, startprog64, entry); 85 } 86 87 /* ARGSUSED */ 88 void 89 multiboot(physaddr_t entry, physaddr_t header, physaddr_t sp, uint32_t magic) 90 { 91 (*multiboot64)(entry, header, magic); 92 } 93