efiboot.c revision 1.14
1 /* $NetBSD: efiboot.c,v 1.14 2019/04/10 19:11:42 skrll 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 #ifdef _LP64 46 #define PRIxEFIPTR "lX" 47 #define PRIxEFISIZE "lX" 48 #else 49 #define PRIxEFIPTR "X" 50 #define PRIxEFISIZE "X" 51 #endif 52 53 static EFI_PHYSICAL_ADDRESS heap_start; 54 static UINTN heap_size = 8 * 1024 * 1024; 55 static EFI_EVENT delay_ev = 0; 56 57 EFI_STATUS EFIAPI efi_main(EFI_HANDLE, EFI_SYSTEM_TABLE *); 58 59 EFI_STATUS EFIAPI 60 efi_main(EFI_HANDLE imageHandle, EFI_SYSTEM_TABLE *systemTable) 61 { 62 EFI_STATUS status; 63 u_int sz = EFI_SIZE_TO_PAGES(heap_size); 64 65 IH = imageHandle; 66 67 InitializeLib(imageHandle, systemTable); 68 69 (void)uefi_call_wrapper(ST->ConOut->Reset, 2, ST->ConOut, FALSE); 70 if (ST->ConOut->ClearScreen) 71 (void)uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut); 72 73 status = uefi_call_wrapper(BS->AllocatePages, 4, AllocateAnyPages, EfiLoaderData, sz, &heap_start); 74 if (EFI_ERROR(status)) 75 return status; 76 setheap((void *)(uintptr_t)heap_start, (void *)(uintptr_t)(heap_start + heap_size)); 77 78 status = uefi_call_wrapper(BS->HandleProtocol, 3, imageHandle, &LoadedImageProtocol, (void **)&efi_li); 79 if (EFI_ERROR(status)) 80 return status; 81 status = uefi_call_wrapper(BS->HandleProtocol, 3, efi_li->DeviceHandle, &DevicePathProtocol, (void **)&efi_bootdp); 82 if (EFI_ERROR(status)) 83 efi_bootdp = NULL; 84 85 #ifdef EFIBOOT_DEBUG 86 Print(L"Loaded image : 0x%" PRIxEFIPTR "\n", efi_li); 87 Print(L"FilePath : 0x%" PRIxEFIPTR "\n", efi_li->FilePath); 88 Print(L"ImageBase : 0x%" PRIxEFIPTR "\n", efi_li->ImageBase); 89 Print(L"ImageSize : 0x%" PRIxEFISIZE "\n", efi_li->ImageSize); 90 Print(L"Image file : %s\n", DevicePathToStr(efi_li->FilePath)); 91 #endif 92 93 efi_acpi_probe(); 94 efi_fdt_probe(); 95 efi_pxe_probe(); 96 efi_net_probe(); 97 efi_file_system_probe(); 98 efi_block_probe(); 99 100 boot(); 101 102 return EFI_SUCCESS; 103 } 104 105 #ifdef EFIBOOT_RUNTIME_ADDRESS 106 static uint64_t 107 efi_runtime_alloc_va(uint64_t npages) 108 { 109 static uint64_t va = EFIBOOT_RUNTIME_ADDRESS; 110 static uint64_t sz = EFIBOOT_RUNTIME_SIZE; 111 uint64_t nva; 112 113 if (sz < (npages * EFI_PAGE_SIZE)) 114 panic("efi_acpi_alloc_va: couldn't allocate %" PRIu64 " pages", npages); 115 116 nva = va; 117 va += (npages * EFI_PAGE_SIZE); 118 sz -= (npages * EFI_PAGE_SIZE); 119 120 return nva; 121 } 122 #endif 123 124 #ifdef EFIBOOT_RUNTIME_ADDRESS 125 static void 126 efi_set_virtual_address_map(EFI_MEMORY_DESCRIPTOR *memmap, UINTN nentries, UINTN mapkey, UINTN descsize, UINT32 descver) 127 { 128 EFI_MEMORY_DESCRIPTOR *md, *vmd, *vmemmap; 129 EFI_STATUS status; 130 int n, nrt; 131 void *fdt; 132 133 fdt = efi_fdt_data(); 134 135 vmemmap = alloc(nentries * descsize); 136 if (vmemmap == NULL) 137 panic("FATAL: couldn't allocate virtual memory map"); 138 139 for (n = 0, nrt = 0, vmd = vmemmap, md = memmap; n < nentries; n++, md = NextMemoryDescriptor(md, descsize)) { 140 if ((md->Attribute & EFI_MEMORY_RUNTIME) == 0) 141 continue; 142 md->VirtualStart = efi_runtime_alloc_va(md->NumberOfPages); 143 144 switch (md->Type) { 145 case EfiRuntimeServicesCode: 146 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->PhysicalStart); 147 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->VirtualStart); 148 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-code", md->NumberOfPages * EFI_PAGE_SIZE); 149 break; 150 case EfiRuntimeServicesData: 151 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->PhysicalStart); 152 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->VirtualStart); 153 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-data", md->NumberOfPages * EFI_PAGE_SIZE); 154 break; 155 case EfiMemoryMappedIO: 156 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->PhysicalStart); 157 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->VirtualStart); 158 fdt_appendprop_u64(fdt, fdt_path_offset(fdt, "/chosen"), "netbsd,uefi-runtime-mmio", md->NumberOfPages * EFI_PAGE_SIZE); 159 break; 160 default: 161 break; 162 } 163 164 *vmd = *md; 165 vmd = NextMemoryDescriptor(vmd, descsize); 166 ++nrt; 167 } 168 169 status = uefi_call_wrapper(RT->SetVirtualAddressMap, 4, nrt * descsize, descsize, descver, vmemmap); 170 if (EFI_ERROR(status)) { 171 printf("WARNING: SetVirtualAddressMap failed\n"); 172 return; 173 } 174 } 175 #endif 176 177 void 178 efi_cleanup(void) 179 { 180 EFI_STATUS status; 181 EFI_MEMORY_DESCRIPTOR *memmap; 182 UINTN nentries, mapkey, descsize; 183 UINT32 descver; 184 185 memmap = LibMemoryMap(&nentries, &mapkey, &descsize, &descver); 186 187 status = uefi_call_wrapper(BS->ExitBootServices, 2, IH, mapkey); 188 if (EFI_ERROR(status)) { 189 printf("WARNING: ExitBootServices failed\n"); 190 return; 191 } 192 193 #ifdef EFIBOOT_RUNTIME_ADDRESS 194 efi_set_virtual_address_map(memmap, nentries, mapkey, descsize, descver); 195 #endif 196 } 197 198 void 199 efi_exit(void) 200 { 201 EFI_STATUS status; 202 203 status = uefi_call_wrapper(BS->Exit, 4, IH, EFI_ABORTED, 0, NULL); 204 if (EFI_ERROR(status)) 205 printf("WARNING: Exit failed\n"); 206 } 207 208 void 209 efi_reboot(void) 210 { 211 uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold, EFI_SUCCESS, 0, NULL); 212 213 printf("WARNING: Reset failed\n"); 214 } 215 216 void 217 efi_delay(int us) 218 { 219 EFI_STATUS status; 220 UINTN val; 221 222 if (delay_ev == 0) { 223 status = uefi_call_wrapper(BS->CreateEvent, 5, EVT_TIMER, TPL_APPLICATION, 0, 0, &delay_ev); 224 if (EFI_ERROR(status)) 225 return; 226 } 227 228 uefi_call_wrapper(BS->SetTimer, 3, delay_ev, TimerRelative, us * 10); 229 uefi_call_wrapper(BS->WaitForEvent, 3, 1, &delay_ev, &val); 230 } 231 232 void 233 efi_progress(const char *fmt, ...) 234 { 235 va_list ap; 236 237 if ((howto & AB_SILENT) != 0) 238 return; 239 240 va_start(ap, fmt); 241 vprintf(fmt, ap); 242 va_end(ap); 243 } 244
Indexes created Sun Sep 28 16:09:52 GMT 2025