1 /*- 2 * Copyright (c) 2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 29 #include <stand.h> 30 #include <string.h> 31 32 #include <sys/param.h> 33 #include <sys/linker.h> 34 #include <machine/elf.h> 35 36 #include <bootstrap.h> 37 38 #include <efi.h> 39 #include <efilib.h> 40 41 #include "loader_efi.h" 42 #include "cache.h" 43 44 #include "platform/acfreebsd.h" 45 #include "acconfig.h" 46 #define ACPI_SYSTEM_XFACE 47 #define ACPI_USE_SYSTEM_INTTYPES 48 #include "actypes.h" 49 #include "actbl.h" 50 51 static EFI_GUID acpi_guid = ACPI_TABLE_GUID; 52 static EFI_GUID acpi20_guid = ACPI_20_TABLE_GUID; 53 54 static int elf64_exec(struct preloaded_file *amp); 55 static int elf64_obj_exec(struct preloaded_file *amp); 56 57 int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp); 58 59 static struct file_format arm64_elf = { 60 elf64_loadfile, 61 elf64_exec 62 }; 63 64 struct file_format *file_formats[] = { 65 &arm64_elf, 66 NULL 67 }; 68 69 static int 70 elf64_exec(struct preloaded_file *fp) 71 { 72 vm_offset_t modulep, kernendp; 73 vm_offset_t clean_addr; 74 size_t clean_size; 75 struct file_metadata *md; 76 ACPI_TABLE_RSDP *rsdp; 77 Elf_Ehdr *ehdr; 78 char buf[24]; 79 int err, revision; 80 void (*entry)(vm_offset_t); 81 82 rsdp = efi_get_table(&acpi20_guid); 83 if (rsdp == NULL) { 84 rsdp = efi_get_table(&acpi_guid); 85 } 86 if (rsdp != NULL) { 87 sprintf(buf, "0x%016llx", (unsigned long long)rsdp); 88 setenv("hint.acpi.0.rsdp", buf, 1); 89 revision = rsdp->Revision; 90 if (revision == 0) 91 revision = 1; 92 sprintf(buf, "%d", revision); 93 setenv("hint.acpi.0.revision", buf, 1); 94 strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId)); 95 buf[sizeof(rsdp->OemId)] = '\0'; 96 setenv("hint.acpi.0.oem", buf, 1); 97 sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress); 98 setenv("hint.acpi.0.rsdt", buf, 1); 99 if (revision >= 2) { 100 /* XXX extended checksum? */ 101 sprintf(buf, "0x%016llx", 102 (unsigned long long)rsdp->XsdtPhysicalAddress); 103 setenv("hint.acpi.0.xsdt", buf, 1); 104 sprintf(buf, "%d", rsdp->Length); 105 setenv("hint.acpi.0.xsdt_length", buf, 1); 106 } 107 } 108 109 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 110 return (EFTYPE); 111 112 ehdr = (Elf_Ehdr *)&(md->md_data); 113 entry = efi_translate(ehdr->e_entry); 114 115 efi_time_fini(); 116 err = bi_load(fp->f_args, &modulep, &kernendp); 117 if (err != 0) { 118 efi_time_init(); 119 return (err); 120 } 121 122 dev_cleanup(); 123 124 /* Clean D-cache under kernel area and invalidate whole I-cache */ 125 clean_addr = (vm_offset_t)efi_translate(fp->f_addr); 126 clean_size = (vm_offset_t)efi_translate(kernendp) - clean_addr; 127 128 cpu_flush_dcache((void *)clean_addr, clean_size); 129 cpu_inval_icache(NULL, 0); 130 131 (*entry)(modulep); 132 panic("exec returned"); 133 } 134 135 static int 136 elf64_obj_exec(struct preloaded_file *fp) 137 { 138 139 printf("%s called for preloaded file %p (=%s):\n", __func__, fp, 140 fp->f_name); 141 return (ENOSYS); 142 } 143 144