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 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <string.h> 32 33 #include <sys/param.h> 34 #include <sys/linker.h> 35 #include <machine/elf.h> 36 37 #include <bootstrap.h> 38 39 #include <efi.h> 40 #include <efilib.h> 41 42 #include "loader_efi.h" 43 #include "cache.h" 44 45 #include "platform/acfreebsd.h" 46 #include "acconfig.h" 47 #define ACPI_SYSTEM_XFACE 48 #define ACPI_USE_SYSTEM_INTTYPES 49 #include "actypes.h" 50 #include "actbl.h" 51 52 static EFI_GUID acpi_guid = ACPI_TABLE_GUID; 53 static EFI_GUID acpi20_guid = ACPI_20_TABLE_GUID; 54 55 static int elf64_exec(struct preloaded_file *amp); 56 static int elf64_obj_exec(struct preloaded_file *amp); 57 58 int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp, 59 bool exit_bs); 60 61 static struct file_format arm64_elf = { 62 elf64_loadfile, 63 elf64_exec 64 }; 65 66 struct file_format *file_formats[] = { 67 &arm64_elf, 68 NULL 69 }; 70 71 static int 72 elf64_exec(struct preloaded_file *fp) 73 { 74 vm_offset_t modulep, kernendp; 75 vm_offset_t clean_addr; 76 size_t clean_size; 77 struct file_metadata *md; 78 ACPI_TABLE_RSDP *rsdp; 79 Elf_Ehdr *ehdr; 80 char buf[24]; 81 int err, revision; 82 void (*entry)(vm_offset_t); 83 84 /* 85 * Report the RSDP to the kernel. The old code used the 'hints' method 86 * to communicate this to the kernel, but this is now considered legacy. 87 * Instead, move to setting different tunables that start with acpi. 88 * The old 'hints' can be removed before we branch for FreeBSD 15. 89 */ 90 91 rsdp = efi_get_table(&acpi20_guid); 92 if (rsdp == NULL) { 93 rsdp = efi_get_table(&acpi_guid); 94 } 95 if (rsdp != NULL) { 96 sprintf(buf, "0x%016llx", (unsigned long long)rsdp); 97 setenv("hint.acpi.0.rsdp", buf, 1); 98 setenv("acpi.rsdp", buf, 1); 99 revision = rsdp->Revision; 100 if (revision == 0) 101 revision = 1; 102 sprintf(buf, "%d", revision); 103 setenv("hint.acpi.0.revision", buf, 1); 104 setenv("acpi.revision", buf, 1); 105 strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId)); 106 buf[sizeof(rsdp->OemId)] = '\0'; 107 setenv("hint.acpi.0.oem", buf, 1); 108 setenv("acpi.oem", buf, 1); 109 sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress); 110 setenv("hint.acpi.0.rsdt", buf, 1); 111 setenv("acpi.rsdt", buf, 1); 112 if (revision >= 2) { 113 /* XXX extended checksum? */ 114 sprintf(buf, "0x%016llx", 115 (unsigned long long)rsdp->XsdtPhysicalAddress); 116 setenv("hint.acpi.0.xsdt", buf, 1); 117 setenv("acpi.xsdt", buf, 1); 118 sprintf(buf, "%d", rsdp->Length); 119 setenv("hint.acpi.0.xsdt_length", buf, 1); 120 setenv("acpi.xsdt_length", buf, 1); 121 } 122 } 123 124 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 125 return(EFTYPE); 126 127 ehdr = (Elf_Ehdr *)&(md->md_data); 128 entry = efi_translate(ehdr->e_entry); 129 130 efi_time_fini(); 131 err = bi_load(fp->f_args, &modulep, &kernendp, true); 132 if (err != 0) { 133 efi_time_init(); 134 return (err); 135 } 136 137 dev_cleanup(); 138 139 /* Clean D-cache under kernel area and invalidate whole I-cache */ 140 clean_addr = (vm_offset_t)efi_translate(fp->f_addr); 141 clean_size = (vm_offset_t)efi_translate(kernendp) - clean_addr; 142 143 cpu_flush_dcache((void *)clean_addr, clean_size); 144 cpu_inval_icache(); 145 146 (*entry)(modulep); 147 panic("exec returned"); 148 } 149 150 static int 151 elf64_obj_exec(struct preloaded_file *fp) 152 { 153 154 printf("%s called for preloaded file %p (=%s):\n", __func__, fp, 155 fp->f_name); 156 return (ENOSYS); 157 } 158 159