efiboot.c revision 1.10
1 /* $NetBSD: efiboot.c,v 1.10 2018/10/28 10:17:47 jmcneill 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 "efifile.h" 31 #include "efiblock.h" 32 #include "efifdt.h" 33 #include "efiacpi.h" 34 35 #include <sys/reboot.h> 36 37 #include <libfdt.h> 38 39 EFI_HANDLE IH; 40 EFI_DEVICE_PATH *efi_bootdp; 41 EFI_LOADED_IMAGE *efi_li; 42 43 int howto = 0; 44 45 static EFI_PHYSICAL_ADDRESS heap_start; 46 static UINTN heap_size = 8 * 1024 * 1024; 47 static EFI_EVENT delay_ev = 0; 48 49 EFI_STATUS EFIAPI efi_main(EFI_HANDLE, EFI_SYSTEM_TABLE *); 50 51 EFI_STATUS EFIAPI 52 efi_main(EFI_HANDLE imageHandle, EFI_SYSTEM_TABLE *systemTable) 53 { 54 EFI_STATUS status; 55 u_int sz = EFI_SIZE_TO_PAGES(heap_size); 56 57 IH = imageHandle; 58 59 InitializeLib(imageHandle, systemTable); 60 61 (void)uefi_call_wrapper(ST->ConOut->Reset, 2, ST->ConOut, FALSE); 62 if (ST->ConOut->ClearScreen) 63 (void)uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut); 64 65 status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateAnyPages, EfiLoaderData, sz, &heap_start); 66 if (EFI_ERROR(status)) 67 return status; 68 setheap((void *)heap_start, (void *)(heap_start + heap_size)); 69 70 status = uefi_call_wrapper(BS->HandleProtocol, 3, imageHandle, &LoadedImageProtocol, (void **)&efi_li); 71 if (EFI_ERROR(status)) 72 return status; 73 status = uefi_call_wrapper(BS->HandleProtocol, 3, efi_li->DeviceHandle, &DevicePathProtocol, (void **)&efi_bootdp); 74 if (EFI_ERROR(status)) 75 efi_bootdp = NULL; 76 77 #ifdef EFIBOOT_DEBUG 78 Print(L"Loaded image : 0x%lX\n", efi_li); 79 Print(L"FilePath : 0x%lX\n", efi_li->FilePath); 80 Print(L"ImageBase : 0x%lX\n", efi_li->ImageBase); 81 Print(L"ImageSize : 0x%lX\n", efi_li->ImageSize); 82 Print(L"Image file : %s\n", DevicePathToStr(efi_li->FilePath)); 83 #endif 84 85 efi_acpi_probe(); 86 efi_fdt_probe(); 87 efi_file_system_probe(); 88 efi_block_probe(); 89 efi_pxe_probe(); 90 efi_net_probe(); 91 92 boot(); 93 94 return EFI_SUCCESS; 95 } 96 97 #ifdef EFIBOOT_RUNTIME_ADDRESS 98 static uint64_t 99 efi_runtime_alloc_va(uint64_t npages) 100 { 101 static uint64_t va = EFIBOOT_RUNTIME_ADDRESS; 102 static uint64_t sz = EFIBOOT_RUNTIME_SIZE; 103 uint64_t nva; 104 105 if (sz < (npages * EFI_PAGE_SIZE)) 106 panic("efi_acpi_alloc_va: couldn't allocate %" PRIu64 " pages", npages); 107 108 nva = va; 109 va += (npages * EFI_PAGE_SIZE); 110 sz -= (npages * EFI_PAGE_SIZE); 111 112 return nva; 113 } 114 #endif 115 116 #ifdef EFIBOOT_RUNTIME_ADDRESS 117 static void 118 efi_set_virtual_address_map(EFI_MEMORY_DESCRIPTOR *memmap, UINTN nentries, UINTN mapkey, UINTN descsize, UINT32 descver) 119 { 120 EFI_MEMORY_DESCRIPTOR *md, *vmd, *vmemmap; 121 EFI_STATUS status; 122 int n, nrt; 123 void *fdt; 124 125 fdt = efi_fdt_data(); 126 127 vmemmap = alloc(nentries * descsize); 128 if (vmemmap == NULL) 129 panic("FATAL: couldn't allocate virtual memory map"); 130 131 for (n = 0, nrt = 0, vmd = vmemmap, md = memmap; n < nentries; n++, md = NextMemoryDescriptor(md, descsize)) { 132 if ((md->Attribute & EFI_MEMORY_RUNTIME) == 0) 133 continue; 134 md->VirtualStart = efi_runtime_alloc_va(md->NumberOfPages); 135 136 switch (md->Type) { 137 case EfiRuntimeServicesCode: 138 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->PhysicalStart); 139 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->VirtualStart); 140 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->NumberOfPages * EFI_PAGE_SIZE); 141 break; 142 case EfiRuntimeServicesData: 143 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->PhysicalStart); 144 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->VirtualStart); 145 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->NumberOfPages * EFI_PAGE_SIZE); 146 break; 147 default: 148 break; 149 } 150 151 *vmd = *md; 152 vmd = NextMemoryDescriptor(vmd, descsize); 153 ++nrt; 154 } 155 156 status = uefi_call_wrapper(RT->SetVirtualAddressMap, 4, nrt * descsize, descsize, descver, vmemmap); 157 if (EFI_ERROR(status)) { 158 printf("WARNING: SetVirtualAddressMap failed\n"); 159 return; 160 } 161 } 162 #endif 163 164 void 165 efi_cleanup(void) 166 { 167 EFI_STATUS status; 168 EFI_MEMORY_DESCRIPTOR *memmap; 169 UINTN nentries, mapkey, descsize; 170 UINT32 descver; 171 172 memmap = LibMemoryMap(&nentries, &mapkey, &descsize, &descver); 173 174 status = uefi_call_wrapper(BS->ExitBootServices, 2, IH, mapkey); 175 if (EFI_ERROR(status)) { 176 printf("WARNING: ExitBootServices failed\n"); 177 return; 178 } 179 180 #ifdef EFIBOOT_RUNTIME_ADDRESS 181 efi_set_virtual_address_map(memmap, nentries, mapkey, descsize, descver); 182 #endif 183 } 184 185 void 186 efi_exit(void) 187 { 188 EFI_STATUS status; 189 190 status = uefi_call_wrapper(BS->Exit, 4, IH, EFI_ABORTED, 0, NULL); 191 if (EFI_ERROR(status)) 192 printf("WARNING: Exit failed\n"); 193 } 194 195 void 196 efi_reboot(void) 197 { 198 uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold, EFI_SUCCESS, 0, NULL); 199 200 printf("WARNING: Reset failed\n"); 201 } 202 203 void 204 efi_delay(int us) 205 { 206 EFI_STATUS status; 207 UINTN val; 208 209 if (delay_ev == 0) { 210 status = uefi_call_wrapper(BS->CreateEvent, 5, EVT_TIMER, TPL_APPLICATION, 0, 0, &delay_ev); 211 if (EFI_ERROR(status)) 212 return; 213 } 214 215 uefi_call_wrapper(BS->SetTimer, 3, delay_ev, TimerRelative, us * 10); 216 uefi_call_wrapper(BS->WaitForEvent, 3, 1, &delay_ev, &val); 217 } 218 219 void 220 efi_progress(const char *fmt, ...) 221 { 222 va_list ap; 223 224 if ((howto & AB_SILENT) != 0) 225 return; 226 227 va_start(ap, fmt); 228 vprintf(fmt, ap); 229 va_end(ap); 230 } 231
Indexes created Tue Sep 30 06:09:59 GMT 2025