diff --git a/stand/efi/boot1/boot1.c b/stand/efi/boot1/boot1.c index 088821ecd1f8..2f9801c8ea92 100644 --- a/stand/efi/boot1/boot1.c +++ b/stand/efi/boot1/boot1.c @@ -1,324 +1,344 @@ /*- * Copyright (c) 1998 Robert Nordier * All rights reserved. * Copyright (c) 2001 Robert Drehmel * All rights reserved. * Copyright (c) 2014 Nathan Whitehorn * All rights reserved. * Copyright (c) 2015 Eric McCorkle * All rights reserved. * * Redistribution and use in source and binary forms are freely * permitted provided that the above copyright notice and this * paragraph and the following disclaimer are duplicated in all * such forms. * * This software is provided "AS IS" and without any express or * implied warranties, including, without limitation, the implied * warranties of merchantability and fitness for a particular * purpose. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include "boot_module.h" #include "paths.h" #include "proto.h" static void efi_panic(EFI_STATUS s, const char *fmt, ...) __dead2 __printflike(2, 3); const boot_module_t *boot_modules[] = { #ifdef EFI_ZFS_BOOT &zfs_module, #endif #ifdef EFI_UFS_BOOT &ufs_module #endif }; const UINTN num_boot_modules = nitems(boot_modules); static EFI_GUID BlockIoProtocolGUID = BLOCK_IO_PROTOCOL; static EFI_GUID DevicePathGUID = DEVICE_PATH_PROTOCOL; static EFI_GUID LoadedImageGUID = LOADED_IMAGE_PROTOCOL; static EFI_GUID ConsoleControlGUID = EFI_CONSOLE_CONTROL_PROTOCOL_GUID; static EFI_PHYSICAL_ADDRESS heap; static UINTN heapsize; /* * try_boot only returns if it fails to load the loader. If it succeeds * it simply boots, otherwise it returns the status of last EFI call. */ EFI_STATUS try_boot(const boot_module_t *mod, dev_info_t *dev, void *loaderbuf, size_t loadersize) { size_t bufsize, cmdsize; void *buf; char *cmd; EFI_HANDLE loaderhandle; EFI_LOADED_IMAGE *loaded_image; EFI_STATUS status; /* * Read in and parse the command line from /boot.config or /boot/config, * if present. We'll pass it the next stage via a simple ASCII * string. loader.efi has a hack for ASCII strings, so we'll use that to * keep the size down here. We only try to read the alternate file if * we get EFI_NOT_FOUND because all other errors mean that the boot_module * had troubles with the filesystem. We could return early, but we'll let * loading the actual kernel sort all that out. Since these files are * optional, we don't report errors in trying to read them. */ cmd = NULL; cmdsize = 0; status = mod->load(PATH_DOTCONFIG, dev, &buf, &bufsize); if (status == EFI_NOT_FOUND) status = mod->load(PATH_CONFIG, dev, &buf, &bufsize); if (status == EFI_SUCCESS) { cmdsize = bufsize + 1; cmd = malloc(cmdsize); if (cmd == NULL) goto errout; memcpy(cmd, buf, bufsize); cmd[bufsize] = '\0'; free(buf); buf = NULL; } + /* + * See if there's any env variables the module wants to set. If so, + * append it to any config present. + */ + if (mod->extra_env != NULL) { + const char *env = mod->extra_env(); + if (env != NULL) { + size_t newlen = cmdsize + strlen(env) + 1; + + cmd = realloc(cmd, newlen); + if (cmd == NULL) + goto errout; + if (cmdsize > 0) + strlcat(cmd, " ", newlen); + strlcat(cmd, env, newlen); + cmdsize = strlen(cmd); + free(__DECONST(char *, env)); + } + } + if ((status = BS->LoadImage(TRUE, IH, efi_devpath_last_node(dev->devpath), loaderbuf, loadersize, &loaderhandle)) != EFI_SUCCESS) { printf("Failed to load image provided by %s, size: %zu, (%lu)\n", mod->name, loadersize, EFI_ERROR_CODE(status)); goto errout; } status = OpenProtocolByHandle(loaderhandle, &LoadedImageGUID, (void **)&loaded_image); if (status != EFI_SUCCESS) { printf("Failed to query LoadedImage provided by %s (%lu)\n", mod->name, EFI_ERROR_CODE(status)); goto errout; } if (cmd != NULL) printf(" command args: %s\n", cmd); loaded_image->DeviceHandle = dev->devhandle; loaded_image->LoadOptionsSize = cmdsize; loaded_image->LoadOptions = cmd; DPRINTF("Starting '%s' in 5 seconds...", PATH_LOADER_EFI); DSTALL(1000000); DPRINTF("."); DSTALL(1000000); DPRINTF("."); DSTALL(1000000); DPRINTF("."); DSTALL(1000000); DPRINTF("."); DSTALL(1000000); DPRINTF(".\n"); if ((status = BS->StartImage(loaderhandle, NULL, NULL)) != EFI_SUCCESS) { printf("Failed to start image provided by %s (%lu)\n", mod->name, EFI_ERROR_CODE(status)); loaded_image->LoadOptionsSize = 0; loaded_image->LoadOptions = NULL; } errout: if (cmd != NULL) free(cmd); if (buf != NULL) free(buf); if (loaderbuf != NULL) free(loaderbuf); return (status); } EFI_STATUS efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE *Xsystab) { EFI_HANDLE *handles; EFI_LOADED_IMAGE *img; EFI_DEVICE_PATH *imgpath; EFI_STATUS status; EFI_CONSOLE_CONTROL_PROTOCOL *ConsoleControl = NULL; SIMPLE_TEXT_OUTPUT_INTERFACE *conout = NULL; UINTN i, hsize, nhandles; CHAR16 *text; /* Basic initialization*/ ST = Xsystab; IH = Ximage; BS = ST->BootServices; RS = ST->RuntimeServices; heapsize = 64 * 1024 * 1024; status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, EFI_SIZE_TO_PAGES(heapsize), &heap); if (status != EFI_SUCCESS) { ST->ConOut->OutputString(ST->ConOut, __DECONST(CHAR16 *, L"Failed to allocate memory for heap.\r\n")); BS->Exit(IH, status, 0, NULL); } setheap((void *)(uintptr_t)heap, (void *)(uintptr_t)(heap + heapsize)); /* Set up the console, so printf works. */ status = BS->LocateProtocol(&ConsoleControlGUID, NULL, (VOID **)&ConsoleControl); if (status == EFI_SUCCESS) (void)ConsoleControl->SetMode(ConsoleControl, EfiConsoleControlScreenText); /* * Reset the console enable the cursor. Later we'll choose a better * console size through GOP/UGA. */ conout = ST->ConOut; conout->Reset(conout, TRUE); /* Explicitly set conout to mode 0, 80x25 */ conout->SetMode(conout, 0); conout->EnableCursor(conout, TRUE); conout->ClearScreen(conout); printf("\n>> FreeBSD EFI boot block\n"); printf(" Loader path: %s\n\n", PATH_LOADER_EFI); printf(" Initializing modules:"); for (i = 0; i < num_boot_modules; i++) { printf(" %s", boot_modules[i]->name); if (boot_modules[i]->init != NULL) boot_modules[i]->init(); } putchar('\n'); /* Fetch all the block I/O handles, we have to search through them later */ hsize = 0; BS->LocateHandle(ByProtocol, &BlockIoProtocolGUID, NULL, &hsize, NULL); handles = malloc(hsize); if (handles == NULL) efi_panic(EFI_OUT_OF_RESOURCES, "Failed to allocate %d handles\n", hsize); status = BS->LocateHandle(ByProtocol, &BlockIoProtocolGUID, NULL, &hsize, handles); if (status != EFI_SUCCESS) efi_panic(status, "Failed to get device handles\n"); nhandles = hsize / sizeof(*handles); /* Determine the devpath of our image so we can prefer it. */ status = OpenProtocolByHandle(IH, &LoadedImageGUID, (void **)&img); imgpath = NULL; if (status == EFI_SUCCESS) { text = efi_devpath_name(img->FilePath); if (text != NULL) { printf(" Load Path: %S\n", text); efi_setenv_freebsd_wcs("Boot1Path", text); efi_free_devpath_name(text); } status = OpenProtocolByHandle(img->DeviceHandle, &DevicePathGUID, (void **)&imgpath); if (status != EFI_SUCCESS) { DPRINTF("Failed to get image DevicePath (%lu)\n", EFI_ERROR_CODE(status)); } else { text = efi_devpath_name(imgpath); if (text != NULL) { printf(" Load Device: %S\n", text); efi_setenv_freebsd_wcs("Boot1Dev", text); efi_free_devpath_name(text); } } } choice_protocol(handles, nhandles, imgpath); /* If we get here, we're out of luck... */ efi_panic(EFI_LOAD_ERROR, "No bootable partitions found!"); } /* * add_device adds a device to the passed devinfo list. */ void add_device(dev_info_t **devinfop, dev_info_t *devinfo) { dev_info_t *dev; if (*devinfop == NULL) { *devinfop = devinfo; return; } for (dev = *devinfop; dev->next != NULL; dev = dev->next) ; dev->next = devinfo; } void efi_exit(EFI_STATUS s) { BS->FreePages(heap, EFI_SIZE_TO_PAGES(heapsize)); BS->Exit(IH, s, 0, NULL); } void exit(int error __unused) { efi_exit(EFI_LOAD_ERROR); } /* * OK. We totally give up. Exit back to EFI with a sensible status so * it can try the next option on the list. */ static void efi_panic(EFI_STATUS s, const char *fmt, ...) { va_list ap; printf("panic: "); va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); printf("\n"); efi_exit(s); } int getchar(void) { return (-1); } void putchar(int c) { CHAR16 buf[2]; if (c == '\n') { buf[0] = '\r'; buf[1] = 0; ST->ConOut->OutputString(ST->ConOut, buf); } buf[0] = c; buf[1] = 0; ST->ConOut->OutputString(ST->ConOut, buf); } diff --git a/stand/efi/boot1/boot_module.h b/stand/efi/boot1/boot_module.h index 99046fb53577..4ecfa4c72a83 100644 --- a/stand/efi/boot1/boot_module.h +++ b/stand/efi/boot1/boot_module.h @@ -1,112 +1,115 @@ /*- * Copyright (c) 2015 Eric McCorkle * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _BOOT_MODULE_H_ #define _BOOT_MODULE_H_ #include #include #include #include #ifdef EFI_DEBUG #define DPRINTF(fmt, args...) printf(fmt, ##args) #define DSTALL(d) BS->Stall(d) #else #define DPRINTF(fmt, ...) {} #define DSTALL(d) {} #endif /* EFI device info */ typedef struct dev_info { EFI_BLOCK_IO *dev; EFI_DEVICE_PATH *devpath; EFI_HANDLE devhandle; void *devdata; uint64_t partoff; int preferred; struct dev_info *next; } dev_info_t; /* * A boot loader module. * * This is a standard interface for filesystem modules in the EFI system. */ typedef struct boot_module_t { const char *name; /* init is the optional initialiser for the module. */ void (*init)(void); /* * probe checks to see if the module can handle dev. * * Return codes: * EFI_SUCCESS = The module can handle the device. * EFI_NOT_FOUND = The module can not handle the device. * Other = The module encountered an error. */ EFI_STATUS (*probe)(dev_info_t* dev); /* * load should select the best out of a set of devices that probe * indicated were loadable and load the specified file. * * Return codes: * EFI_SUCCESS = The module can handle the device. * EFI_NOT_FOUND = The module can not handle the device. * Other = The module encountered an error. */ EFI_STATUS (*load)(const char *filepath, dev_info_t *devinfo, void **buf, size_t *bufsize); /* status outputs information about the probed devices. */ void (*status)(void); /* valid devices as found by probe. */ dev_info_t *(*devices)(void); + + /* return any environment variables to pass to next stage */ + const char *(*extra_env)(void); } boot_module_t; extern const boot_module_t *boot_modules[]; extern const UINTN num_boot_modules; /* Standard boot modules. */ #ifdef EFI_UFS_BOOT extern const boot_module_t ufs_module; #endif #ifdef EFI_ZFS_BOOT extern const boot_module_t zfs_module; #endif /* Functions available to modules. */ extern void add_device(dev_info_t **devinfop, dev_info_t *devinfo); #endif