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exec.c revision 1.3.2.2 
      1 /* $NetBSD: exec.c,v 1.3.2.2 2018/09/06 06:56:47 pgoyette Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      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 #include "efifdt.h"
     31 
     32 #include <loadfile.h>
     33 
     34 u_long load_offset = 0;
     35 
     36 int
     37 exec_netbsd(const char *fname, const char *args)
     38 {
     39 	EFI_PHYSICAL_ADDRESS addr;
     40 	u_long marks[MARK_MAX], alloc_size;
     41 	EFI_STATUS status;
     42 	int fd;
     43 
     44 	memset(marks, 0, sizeof(marks));
     45 	fd = loadfile(fname, marks, COUNT_KERNEL | LOAD_NOTE);
     46 	if (fd < 0) {
     47 		printf("boot: %s: %s\n", fname, strerror(errno));
     48 		return EIO;
     49 	}
     50 	close(fd);
     51 	marks[MARK_END] = (((u_long) marks[MARK_END] + sizeof(int) - 1)) & (-sizeof(int));
     52 	alloc_size = marks[MARK_END] - marks[MARK_START] + EFIBOOT_ALIGN;
     53 
     54 #ifdef EFIBOOT_ALLOCATE_MAX_ADDRESS
     55 	addr = EFIBOOT_ALLOCATE_MAX_ADDRESS;
     56 	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateMaxAddress, EfiLoaderData,
     57 	    EFI_SIZE_TO_PAGES(alloc_size), &addr);
     58 #else
     59 	addr = 0;
     60 	status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateAnyPages, EfiLoaderData,
     61 	    EFI_SIZE_TO_PAGES(alloc_size), &addr);
     62 #endif
     63 	if (EFI_ERROR(status)) {
     64 		printf("Failed to allocate %lu bytes for kernel image (error %lu)\n",
     65 		    alloc_size, status);
     66 		return ENOMEM;
     67 	}
     68 
     69 	memset(marks, 0, sizeof(marks));
     70 	load_offset = (addr + EFIBOOT_ALIGN) & ~(EFIBOOT_ALIGN - 1);
     71 	fd = loadfile(fname, marks, LOAD_KERNEL);
     72 	if (fd < 0) {
     73 		printf("boot: %s: %s\n", fname, strerror(errno));
     74 		goto cleanup;
     75 	}
     76 	close(fd);
     77 	load_offset = 0;
     78 
     79 	if (efi_fdt_size() > 0) {
     80 		efi_fdt_bootargs(args);
     81 		efi_fdt_memory_map();
     82 	}
     83 
     84 	efi_cleanup();
     85 	efi_boot_kernel(marks);
     86 
     87 	/* This should not happen.. */
     88 	printf("boot returned\n");
     89 
     90 cleanup:
     91 	uefi_call_wrapper(BS->FreePages, 2, addr, EFI_SIZE_TO_PAGES(alloc_size));
     92 	return EIO;
     93 }
     94