diff options
Diffstat (limited to 'grub-core/kern/efi/efi.c')
| -rw-r--r-- | grub-core/kern/efi/efi.c | 1017 |
1 files changed, 1017 insertions, 0 deletions
diff --git a/grub-core/kern/efi/efi.c b/grub-core/kern/efi/efi.c new file mode 100644 index 0000000..8cff7be --- /dev/null +++ b/grub-core/kern/efi/efi.c @@ -0,0 +1,1017 @@ +/* efi.c - generic EFI support */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/misc.h> +#include <grub/charset.h> +#include <grub/efi/api.h> +#include <grub/efi/efi.h> +#include <grub/efi/console_control.h> +#include <grub/efi/pe32.h> +#include <grub/time.h> +#include <grub/term.h> +#include <grub/kernel.h> +#include <grub/mm.h> +#include <grub/loader.h> + +/* The handle of GRUB itself. Filled in by the startup code. */ +grub_efi_handle_t grub_efi_image_handle; + +/* The pointer to a system table. Filled in by the startup code. */ +grub_efi_system_table_t *grub_efi_system_table; + +static grub_efi_guid_t console_control_guid = GRUB_EFI_CONSOLE_CONTROL_GUID; +static grub_efi_guid_t loaded_image_guid = GRUB_EFI_LOADED_IMAGE_GUID; +static grub_efi_guid_t device_path_guid = GRUB_EFI_DEVICE_PATH_GUID; + +void * +grub_efi_locate_protocol (grub_efi_guid_t *protocol, void *registration) +{ + void *interface; + grub_efi_status_t status; + + status = efi_call_3 (grub_efi_system_table->boot_services->locate_protocol, + protocol, registration, &interface); + if (status != GRUB_EFI_SUCCESS) + return 0; + + return interface; +} + +/* Return the array of handles which meet the requirement. If successful, + the number of handles is stored in NUM_HANDLES. The array is allocated + from the heap. */ +grub_efi_handle_t * +grub_efi_locate_handle (grub_efi_locate_search_type_t search_type, + grub_efi_guid_t *protocol, + void *search_key, + grub_efi_uintn_t *num_handles) +{ + grub_efi_boot_services_t *b; + grub_efi_status_t status; + grub_efi_handle_t *buffer; + grub_efi_uintn_t buffer_size = 8 * sizeof (grub_efi_handle_t); + + buffer = grub_malloc (buffer_size); + if (! buffer) + return 0; + + b = grub_efi_system_table->boot_services; + status = efi_call_5 (b->locate_handle, search_type, protocol, search_key, + &buffer_size, buffer); + if (status == GRUB_EFI_BUFFER_TOO_SMALL) + { + grub_free (buffer); + buffer = grub_malloc (buffer_size); + if (! buffer) + return 0; + + status = efi_call_5 (b->locate_handle, search_type, protocol, search_key, + &buffer_size, buffer); + } + + if (status != GRUB_EFI_SUCCESS) + { + grub_free (buffer); + return 0; + } + + *num_handles = buffer_size / sizeof (grub_efi_handle_t); + return buffer; +} + +void * +grub_efi_open_protocol (grub_efi_handle_t handle, + grub_efi_guid_t *protocol, + grub_efi_uint32_t attributes) +{ + grub_efi_boot_services_t *b; + grub_efi_status_t status; + void *interface; + + b = grub_efi_system_table->boot_services; + status = efi_call_6 (b->open_protocol, handle, + protocol, + &interface, + grub_efi_image_handle, + 0, + attributes); + if (status != GRUB_EFI_SUCCESS) + return 0; + + return interface; +} + +int +grub_efi_set_text_mode (int on) +{ + grub_efi_console_control_protocol_t *c; + grub_efi_screen_mode_t mode, new_mode; + + c = grub_efi_locate_protocol (&console_control_guid, 0); + if (! c) + /* No console control protocol instance available, assume it is + already in text mode. */ + return 1; + + if (efi_call_4 (c->get_mode, c, &mode, 0, 0) != GRUB_EFI_SUCCESS) + return 0; + + new_mode = on ? GRUB_EFI_SCREEN_TEXT : GRUB_EFI_SCREEN_GRAPHICS; + if (mode != new_mode) + if (efi_call_2 (c->set_mode, c, new_mode) != GRUB_EFI_SUCCESS) + return 0; + + return 1; +} + +void +grub_efi_stall (grub_efi_uintn_t microseconds) +{ + efi_call_1 (grub_efi_system_table->boot_services->stall, microseconds); +} + +grub_efi_loaded_image_t * +grub_efi_get_loaded_image (grub_efi_handle_t image_handle) +{ + return grub_efi_open_protocol (image_handle, + &loaded_image_guid, + GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL); +} + +void +grub_reboot (void) +{ + grub_machine_fini (GRUB_LOADER_FLAG_NORETURN | + GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY); + efi_call_4 (grub_efi_system_table->runtime_services->reset_system, + GRUB_EFI_RESET_COLD, GRUB_EFI_SUCCESS, 0, NULL); + for (;;) ; +} + +void +grub_exit (void) +{ + grub_machine_fini (GRUB_LOADER_FLAG_NORETURN); + efi_call_4 (grub_efi_system_table->boot_services->exit, + grub_efi_image_handle, GRUB_EFI_SUCCESS, 0, 0); + for (;;) ; +} + +grub_err_t +grub_efi_set_virtual_address_map (grub_efi_uintn_t memory_map_size, + grub_efi_uintn_t descriptor_size, + grub_efi_uint32_t descriptor_version, + grub_efi_memory_descriptor_t *virtual_map) +{ + grub_efi_runtime_services_t *r; + grub_efi_status_t status; + + r = grub_efi_system_table->runtime_services; + status = efi_call_4 (r->set_virtual_address_map, memory_map_size, + descriptor_size, descriptor_version, virtual_map); + + if (status == GRUB_EFI_SUCCESS) + return GRUB_ERR_NONE; + + return grub_error (GRUB_ERR_IO, "set_virtual_address_map failed"); +} + +grub_err_t +grub_efi_set_variable(const char *var, const grub_efi_guid_t *guid, + void *data, grub_size_t datasize) +{ + grub_efi_status_t status; + grub_efi_runtime_services_t *r; + grub_efi_char16_t *var16; + grub_size_t len, len16; + + len = grub_strlen (var); + len16 = len * GRUB_MAX_UTF16_PER_UTF8; + var16 = grub_calloc (len16 + 1, sizeof (var16[0])); + if (!var16) + return grub_errno; + len16 = grub_utf8_to_utf16 (var16, len16, (grub_uint8_t *) var, len, NULL); + var16[len16] = 0; + + r = grub_efi_system_table->runtime_services; + + status = efi_call_5 (r->set_variable, var16, guid, + (GRUB_EFI_VARIABLE_NON_VOLATILE + | GRUB_EFI_VARIABLE_BOOTSERVICE_ACCESS + | GRUB_EFI_VARIABLE_RUNTIME_ACCESS), + datasize, data); + grub_free (var16); + if (status == GRUB_EFI_SUCCESS) + return GRUB_ERR_NONE; + + return grub_error (GRUB_ERR_IO, "could not set EFI variable `%s'", var); +} + +grub_efi_status_t +grub_efi_get_variable_with_attributes (const char *var, + const grub_efi_guid_t *guid, + grub_size_t *datasize_out, + void **data_out, + grub_efi_uint32_t *attributes) +{ + grub_efi_status_t status; + grub_efi_uintn_t datasize = 0; + grub_efi_runtime_services_t *r; + grub_efi_char16_t *var16; + void *data; + grub_size_t len, len16; + + *data_out = NULL; + *datasize_out = 0; + + len = grub_strlen (var); + len16 = len * GRUB_MAX_UTF16_PER_UTF8; + var16 = grub_calloc (len16 + 1, sizeof (var16[0])); + if (!var16) + return GRUB_EFI_OUT_OF_RESOURCES; + len16 = grub_utf8_to_utf16 (var16, len16, (grub_uint8_t *) var, len, NULL); + var16[len16] = 0; + + r = grub_efi_system_table->runtime_services; + + status = efi_call_5 (r->get_variable, var16, guid, NULL, &datasize, NULL); + + if (status != GRUB_EFI_BUFFER_TOO_SMALL || !datasize) + { + grub_free (var16); + return status; + } + + data = grub_malloc (datasize); + if (!data) + { + grub_free (var16); + return GRUB_EFI_OUT_OF_RESOURCES; + } + + status = efi_call_5 (r->get_variable, var16, guid, attributes, &datasize, data); + grub_free (var16); + + if (status == GRUB_EFI_SUCCESS) + { + *data_out = data; + *datasize_out = datasize; + return status; + } + + grub_free (data); + return status; +} + +grub_efi_status_t +grub_efi_get_variable (const char *var, const grub_efi_guid_t *guid, + grub_size_t *datasize_out, void **data_out) +{ + return grub_efi_get_variable_with_attributes (var, guid, datasize_out, data_out, NULL); +} + +#pragma GCC diagnostic ignored "-Wcast-align" + +/* Search the mods section from the PE32/PE32+ image. This code uses + a PE32 header, but should work with PE32+ as well. */ +grub_addr_t +grub_efi_modules_addr (void) +{ + grub_efi_loaded_image_t *image; + struct grub_pe32_header *header; + struct grub_pe32_coff_header *coff_header; + struct grub_pe32_section_table *sections; + struct grub_pe32_section_table *section; + struct grub_module_info *info; + grub_uint16_t i; + + image = grub_efi_get_loaded_image (grub_efi_image_handle); + if (! image) + return 0; + + header = image->image_base; + coff_header = &(header->coff_header); + sections + = (struct grub_pe32_section_table *) ((char *) coff_header + + sizeof (*coff_header) + + coff_header->optional_header_size); + + for (i = 0, section = sections; + i < coff_header->num_sections; + i++, section++) + { + if (grub_strcmp (section->name, "mods") == 0) + break; + } + + if (i == coff_header->num_sections) + { + grub_dprintf("sections", "section %d is last section; invalid.\n", i); + return 0; + } + + info = (struct grub_module_info *) ((char *) image->image_base + + section->virtual_address); + if (section->name[0] != '.' && info->magic != GRUB_MODULE_MAGIC) + { + grub_dprintf("sections", + "section %d has bad magic %08x, should be %08x\n", + i, info->magic, GRUB_MODULE_MAGIC); + return 0; + } + + grub_dprintf("sections", "returning section info for section %d: \"%s\"\n", + i, section->name); + return (grub_addr_t) info; +} + +#pragma GCC diagnostic error "-Wcast-align" + +char * +grub_efi_get_filename (grub_efi_device_path_t *dp0) +{ + char *name = 0, *p, *pi; + grub_size_t filesize = 0; + grub_efi_device_path_t *dp; + + if (!dp0) + return NULL; + + dp = dp0; + + while (dp) + { + grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp); + grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp); + + if (type == GRUB_EFI_END_DEVICE_PATH_TYPE) + break; + if (type == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE + && subtype == GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE) + { + grub_efi_uint16_t len = GRUB_EFI_DEVICE_PATH_LENGTH (dp); + + if (len < 4) + { + grub_error (GRUB_ERR_OUT_OF_RANGE, + "malformed EFI Device Path node has length=%d", len); + return NULL; + } + len = (len - 4) / sizeof (grub_efi_char16_t); + filesize += GRUB_MAX_UTF8_PER_UTF16 * len + 2; + } + + dp = GRUB_EFI_NEXT_DEVICE_PATH (dp); + } + + if (!filesize) + return NULL; + + dp = dp0; + + p = name = grub_malloc (filesize); + if (!name) + return NULL; + + while (dp) + { + grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp); + grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp); + + if (type == GRUB_EFI_END_DEVICE_PATH_TYPE) + break; + else if (type == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE + && subtype == GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE) + { + grub_efi_file_path_device_path_t *fp; + grub_efi_uint16_t len; + grub_efi_char16_t *dup_name; + + *p++ = '/'; + + len = GRUB_EFI_DEVICE_PATH_LENGTH (dp); + if (len < 4) + { + grub_error (GRUB_ERR_OUT_OF_RANGE, + "malformed EFI Device Path node has length=%d", len); + grub_free (name); + return NULL; + } + + len = (len - 4) / sizeof (grub_efi_char16_t); + fp = (grub_efi_file_path_device_path_t *) dp; + /* According to EFI spec Path Name is NULL terminated */ + while (len > 0 && fp->path_name[len - 1] == 0) + len--; + + dup_name = grub_calloc (len, sizeof (*dup_name)); + if (!dup_name) + { + grub_free (name); + return NULL; + } + p = (char *) grub_utf16_to_utf8 ((unsigned char *) p, + grub_memcpy (dup_name, fp->path_name, len * sizeof (*dup_name)), + len); + grub_free (dup_name); + } + + dp = GRUB_EFI_NEXT_DEVICE_PATH (dp); + } + + *p = '\0'; + + for (pi = name, p = name; *pi;) + { + /* EFI breaks paths with backslashes. */ + if (*pi == '\\' || *pi == '/') + { + *p++ = '/'; + while (*pi == '\\' || *pi == '/') + pi++; + continue; + } + *p++ = *pi++; + } + *p = '\0'; + + return name; +} + +grub_efi_device_path_t * +grub_efi_get_device_path (grub_efi_handle_t handle) +{ + return grub_efi_open_protocol (handle, &device_path_guid, + GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL); +} + +/* Return the device path node right before the end node. */ +grub_efi_device_path_t * +grub_efi_find_last_device_path (const grub_efi_device_path_t *dp) +{ + grub_efi_device_path_t *next, *p; + + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp)) + return 0; + + for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p); + ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next); + p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next)) + ; + + return p; +} + +/* Duplicate a device path. */ +grub_efi_device_path_t * +grub_efi_duplicate_device_path (const grub_efi_device_path_t *dp) +{ + grub_efi_device_path_t *p; + grub_size_t total_size = 0; + + for (p = (grub_efi_device_path_t *) dp; + ; + p = GRUB_EFI_NEXT_DEVICE_PATH (p)) + { + grub_size_t len = GRUB_EFI_DEVICE_PATH_LENGTH (p); + + /* + * In the event that we find a node that's completely garbage, for + * example if we get to 0x7f 0x01 0x02 0x00 ... (EndInstance with a size + * of 2), GRUB_EFI_END_ENTIRE_DEVICE_PATH() will be true and + * GRUB_EFI_NEXT_DEVICE_PATH() will return NULL, so we won't continue, + * and neither should our consumers, but there won't be any error raised + * even though the device path is junk. + * + * This keeps us from passing junk down back to our caller. + */ + if (len < 4) + { + grub_error (GRUB_ERR_OUT_OF_RANGE, + "malformed EFI Device Path node has length=%" PRIuGRUB_SIZE, len); + return NULL; + } + + total_size += len; + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p)) + break; + } + + p = grub_malloc (total_size); + if (! p) + return 0; + + grub_memcpy (p, dp, total_size); + return p; +} + +static void +dump_vendor_path (const char *type, grub_efi_vendor_device_path_t *vendor) +{ + grub_uint32_t vendor_data_len = vendor->header.length - sizeof (*vendor); + grub_printf ("/%sVendor(%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x)[%x: ", + type, + (unsigned) vendor->vendor_guid.data1, + (unsigned) vendor->vendor_guid.data2, + (unsigned) vendor->vendor_guid.data3, + (unsigned) vendor->vendor_guid.data4[0], + (unsigned) vendor->vendor_guid.data4[1], + (unsigned) vendor->vendor_guid.data4[2], + (unsigned) vendor->vendor_guid.data4[3], + (unsigned) vendor->vendor_guid.data4[4], + (unsigned) vendor->vendor_guid.data4[5], + (unsigned) vendor->vendor_guid.data4[6], + (unsigned) vendor->vendor_guid.data4[7], + vendor_data_len); + if (vendor->header.length > sizeof (*vendor)) + { + grub_uint32_t i; + for (i = 0; i < vendor_data_len; i++) + grub_printf ("%02x ", vendor->vendor_defined_data[i]); + } + grub_printf ("]"); +} + + +/* Print the chain of Device Path nodes. This is mainly for debugging. */ +void +grub_efi_print_device_path (grub_efi_device_path_t *dp) +{ + while (GRUB_EFI_DEVICE_PATH_VALID (dp)) + { + grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp); + grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp); + grub_efi_uint16_t len = GRUB_EFI_DEVICE_PATH_LENGTH (dp); + + switch (type) + { + case GRUB_EFI_END_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE: + grub_printf ("/EndEntire\n"); + //grub_putchar ('\n'); + break; + case GRUB_EFI_END_THIS_DEVICE_PATH_SUBTYPE: + grub_printf ("/EndThis\n"); + //grub_putchar ('\n'); + break; + default: + grub_printf ("/EndUnknown(%x)\n", (unsigned) subtype); + break; + } + break; + + case GRUB_EFI_HARDWARE_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_PCI_DEVICE_PATH_SUBTYPE: + { + grub_efi_pci_device_path_t *pci + = (grub_efi_pci_device_path_t *) dp; + grub_printf ("/PCI(%x,%x)", + (unsigned) pci->function, (unsigned) pci->device); + } + break; + case GRUB_EFI_PCCARD_DEVICE_PATH_SUBTYPE: + { + grub_efi_pccard_device_path_t *pccard + = (grub_efi_pccard_device_path_t *) dp; + grub_printf ("/PCCARD(%x)", + (unsigned) pccard->function); + } + break; + case GRUB_EFI_MEMORY_MAPPED_DEVICE_PATH_SUBTYPE: + { + grub_efi_memory_mapped_device_path_t *mmapped + = (grub_efi_memory_mapped_device_path_t *) dp; + grub_printf ("/MMap(%x,%llx,%llx)", + (unsigned) mmapped->memory_type, + (unsigned long long) mmapped->start_address, + (unsigned long long) mmapped->end_address); + } + break; + case GRUB_EFI_VENDOR_DEVICE_PATH_SUBTYPE: + dump_vendor_path ("Hardware", + (grub_efi_vendor_device_path_t *) dp); + break; + case GRUB_EFI_CONTROLLER_DEVICE_PATH_SUBTYPE: + { + grub_efi_controller_device_path_t *controller + = (grub_efi_controller_device_path_t *) dp; + grub_printf ("/Ctrl(%x)", + (unsigned) controller->controller_number); + } + break; + default: + grub_printf ("/UnknownHW(%x)", (unsigned) subtype); + break; + } + break; + + case GRUB_EFI_ACPI_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_ACPI_DEVICE_PATH_SUBTYPE: + { + grub_efi_acpi_device_path_t *acpi + = (grub_efi_acpi_device_path_t *) dp; + grub_printf ("/ACPI(%x,%x)", + (unsigned) acpi->hid, + (unsigned) acpi->uid); + } + break; + case GRUB_EFI_EXPANDED_ACPI_DEVICE_PATH_SUBTYPE: + { + grub_efi_expanded_acpi_device_path_t *eacpi + = (grub_efi_expanded_acpi_device_path_t *) dp; + grub_printf ("/ACPI("); + + if (GRUB_EFI_EXPANDED_ACPI_HIDSTR (dp)[0] == '\0') + grub_printf ("%x,", (unsigned) eacpi->hid); + else + grub_printf ("%s,", GRUB_EFI_EXPANDED_ACPI_HIDSTR (dp)); + + if (GRUB_EFI_EXPANDED_ACPI_UIDSTR (dp)[0] == '\0') + grub_printf ("%x,", (unsigned) eacpi->uid); + else + grub_printf ("%s,", GRUB_EFI_EXPANDED_ACPI_UIDSTR (dp)); + + if (GRUB_EFI_EXPANDED_ACPI_CIDSTR (dp)[0] == '\0') + grub_printf ("%x)", (unsigned) eacpi->cid); + else + grub_printf ("%s)", GRUB_EFI_EXPANDED_ACPI_CIDSTR (dp)); + } + break; + default: + grub_printf ("/UnknownACPI(%x)", (unsigned) subtype); + break; + } + break; + + case GRUB_EFI_MESSAGING_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_ATAPI_DEVICE_PATH_SUBTYPE: + { + grub_efi_atapi_device_path_t *atapi + = (grub_efi_atapi_device_path_t *) dp; + grub_printf ("/ATAPI(%x,%x,%x)", + (unsigned) atapi->primary_secondary, + (unsigned) atapi->slave_master, + (unsigned) atapi->lun); + } + break; + case GRUB_EFI_SCSI_DEVICE_PATH_SUBTYPE: + { + grub_efi_scsi_device_path_t *scsi + = (grub_efi_scsi_device_path_t *) dp; + grub_printf ("/SCSI(%x,%x)", + (unsigned) scsi->pun, + (unsigned) scsi->lun); + } + break; + case GRUB_EFI_FIBRE_CHANNEL_DEVICE_PATH_SUBTYPE: + { + grub_efi_fibre_channel_device_path_t *fc + = (grub_efi_fibre_channel_device_path_t *) dp; + grub_printf ("/FibreChannel(%llx,%llx)", + (unsigned long long) fc->wwn, + (unsigned long long) fc->lun); + } + break; + case GRUB_EFI_1394_DEVICE_PATH_SUBTYPE: + { + grub_efi_1394_device_path_t *firewire + = (grub_efi_1394_device_path_t *) dp; + grub_printf ("/1394(%llx)", + (unsigned long long) firewire->guid); + } + break; + case GRUB_EFI_USB_DEVICE_PATH_SUBTYPE: + { + grub_efi_usb_device_path_t *usb + = (grub_efi_usb_device_path_t *) dp; + grub_printf ("/USB(%x,%x)", + (unsigned) usb->parent_port_number, + (unsigned) usb->usb_interface); + } + break; + case GRUB_EFI_USB_CLASS_DEVICE_PATH_SUBTYPE: + { + grub_efi_usb_class_device_path_t *usb_class + = (grub_efi_usb_class_device_path_t *) dp; + grub_printf ("/USBClass(%x,%x,%x,%x,%x)", + (unsigned) usb_class->vendor_id, + (unsigned) usb_class->product_id, + (unsigned) usb_class->device_class, + (unsigned) usb_class->device_subclass, + (unsigned) usb_class->device_protocol); + } + break; + case GRUB_EFI_I2O_DEVICE_PATH_SUBTYPE: + { + grub_efi_i2o_device_path_t *i2o + = (grub_efi_i2o_device_path_t *) dp; + grub_printf ("/I2O(%x)", (unsigned) i2o->tid); + } + break; + case GRUB_EFI_MAC_ADDRESS_DEVICE_PATH_SUBTYPE: + { + grub_efi_mac_address_device_path_t *mac + = (grub_efi_mac_address_device_path_t *) dp; + grub_printf ("/MacAddr(%02x:%02x:%02x:%02x:%02x:%02x,%x)", + (unsigned) mac->mac_address[0], + (unsigned) mac->mac_address[1], + (unsigned) mac->mac_address[2], + (unsigned) mac->mac_address[3], + (unsigned) mac->mac_address[4], + (unsigned) mac->mac_address[5], + (unsigned) mac->if_type); + } + break; + case GRUB_EFI_IPV4_DEVICE_PATH_SUBTYPE: + { + grub_efi_ipv4_device_path_t *ipv4 + = (grub_efi_ipv4_device_path_t *) dp; + grub_printf ("/IPv4(%u.%u.%u.%u,%u.%u.%u.%u,%u,%u,%x,%x)", + (unsigned) ipv4->local_ip_address[0], + (unsigned) ipv4->local_ip_address[1], + (unsigned) ipv4->local_ip_address[2], + (unsigned) ipv4->local_ip_address[3], + (unsigned) ipv4->remote_ip_address[0], + (unsigned) ipv4->remote_ip_address[1], + (unsigned) ipv4->remote_ip_address[2], + (unsigned) ipv4->remote_ip_address[3], + (unsigned) ipv4->local_port, + (unsigned) ipv4->remote_port, + (unsigned) ipv4->protocol, + (unsigned) ipv4->static_ip_address); + } + break; + case GRUB_EFI_IPV6_DEVICE_PATH_SUBTYPE: + { + grub_efi_ipv6_device_path_t *ipv6 + = (grub_efi_ipv6_device_path_t *) dp; + grub_printf ("/IPv6(%x:%x:%x:%x:%x:%x:%x:%x,%x:%x:%x:%x:%x:%x:%x:%x,%u,%u,%x,%x)", + (unsigned) ipv6->local_ip_address[0], + (unsigned) ipv6->local_ip_address[1], + (unsigned) ipv6->local_ip_address[2], + (unsigned) ipv6->local_ip_address[3], + (unsigned) ipv6->local_ip_address[4], + (unsigned) ipv6->local_ip_address[5], + (unsigned) ipv6->local_ip_address[6], + (unsigned) ipv6->local_ip_address[7], + (unsigned) ipv6->remote_ip_address[0], + (unsigned) ipv6->remote_ip_address[1], + (unsigned) ipv6->remote_ip_address[2], + (unsigned) ipv6->remote_ip_address[3], + (unsigned) ipv6->remote_ip_address[4], + (unsigned) ipv6->remote_ip_address[5], + (unsigned) ipv6->remote_ip_address[6], + (unsigned) ipv6->remote_ip_address[7], + (unsigned) ipv6->local_port, + (unsigned) ipv6->remote_port, + (unsigned) ipv6->protocol, + (unsigned) ipv6->static_ip_address); + } + break; + case GRUB_EFI_INFINIBAND_DEVICE_PATH_SUBTYPE: + { + grub_efi_infiniband_device_path_t *ib + = (grub_efi_infiniband_device_path_t *) dp; + grub_printf ("/InfiniBand(%x,%llx,%llx,%llx)", + (unsigned) ib->port_gid[0], /* XXX */ + (unsigned long long) ib->remote_id, + (unsigned long long) ib->target_port_id, + (unsigned long long) ib->device_id); + } + break; + case GRUB_EFI_UART_DEVICE_PATH_SUBTYPE: + { + grub_efi_uart_device_path_t *uart + = (grub_efi_uart_device_path_t *) dp; + grub_printf ("/UART(%llu,%u,%x,%x)", + (unsigned long long) uart->baud_rate, + uart->data_bits, + uart->parity, + uart->stop_bits); + } + break; + case GRUB_EFI_SATA_DEVICE_PATH_SUBTYPE: + { + grub_efi_sata_device_path_t *sata; + sata = (grub_efi_sata_device_path_t *) dp; + grub_printf ("/Sata(%x,%x,%x)", + sata->hba_port, + sata->multiplier_port, + sata->lun); + } + break; + + case GRUB_EFI_VENDOR_MESSAGING_DEVICE_PATH_SUBTYPE: + dump_vendor_path ("Messaging", + (grub_efi_vendor_device_path_t *) dp); + break; + default: + grub_printf ("/UnknownMessaging(%x)", (unsigned) subtype); + break; + } + break; + + case GRUB_EFI_MEDIA_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE: + { + grub_efi_hard_drive_device_path_t *hd = (grub_efi_hard_drive_device_path_t *) dp; + grub_printf ("/HD(%u,%llx,%llx,%02x%02x%02x%02x%02x%02x%02x%02x,%x,%x)", + hd->partition_number, + (unsigned long long) hd->partition_start, + (unsigned long long) hd->partition_size, + (unsigned) hd->partition_signature[0], + (unsigned) hd->partition_signature[1], + (unsigned) hd->partition_signature[2], + (unsigned) hd->partition_signature[3], + (unsigned) hd->partition_signature[4], + (unsigned) hd->partition_signature[5], + (unsigned) hd->partition_signature[6], + (unsigned) hd->partition_signature[7], + (unsigned) hd->partmap_type, + (unsigned) hd->signature_type); + } + break; + case GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE: + { + grub_efi_cdrom_device_path_t *cd + = (grub_efi_cdrom_device_path_t *) dp; + grub_printf ("/CD(%u,%llx,%llx)", + cd->boot_entry, + (unsigned long long) cd->partition_start, + (unsigned long long) cd->partition_size); + } + break; + case GRUB_EFI_VENDOR_MEDIA_DEVICE_PATH_SUBTYPE: + dump_vendor_path ("Media", + (grub_efi_vendor_device_path_t *) dp); + break; + case GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE: + { + grub_efi_file_path_device_path_t *fp; + grub_uint8_t *buf; + fp = (grub_efi_file_path_device_path_t *) dp; + buf = grub_malloc ((len - 4) * 2 + 1); + if (buf) + { + grub_efi_char16_t *dup_name = grub_malloc (len - 4); + if (!dup_name) + { + grub_errno = GRUB_ERR_NONE; + grub_printf ("/File((null))"); + grub_free (buf); + break; + } + *grub_utf16_to_utf8 (buf, grub_memcpy (dup_name, fp->path_name, len - 4), + (len - 4) / sizeof (grub_efi_char16_t)) + = '\0'; + grub_free (dup_name); + } + else + grub_errno = GRUB_ERR_NONE; + grub_printf ("/File(%s)", buf); + grub_free (buf); + } + break; + case GRUB_EFI_PROTOCOL_DEVICE_PATH_SUBTYPE: + { + grub_efi_protocol_device_path_t *proto + = (grub_efi_protocol_device_path_t *) dp; + grub_printf ("/Protocol(%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x)", + (unsigned) proto->guid.data1, + (unsigned) proto->guid.data2, + (unsigned) proto->guid.data3, + (unsigned) proto->guid.data4[0], + (unsigned) proto->guid.data4[1], + (unsigned) proto->guid.data4[2], + (unsigned) proto->guid.data4[3], + (unsigned) proto->guid.data4[4], + (unsigned) proto->guid.data4[5], + (unsigned) proto->guid.data4[6], + (unsigned) proto->guid.data4[7]); + } + break; + default: + grub_printf ("/UnknownMedia(%x)", (unsigned) subtype); + break; + } + break; + + case GRUB_EFI_BIOS_DEVICE_PATH_TYPE: + switch (subtype) + { + case GRUB_EFI_BIOS_DEVICE_PATH_SUBTYPE: + { + grub_efi_bios_device_path_t *bios + = (grub_efi_bios_device_path_t *) dp; + grub_printf ("/BIOS(%x,%x,%s)", + (unsigned) bios->device_type, + (unsigned) bios->status_flags, + (char *) (dp + 1)); + } + break; + default: + grub_printf ("/UnknownBIOS(%x)", (unsigned) subtype); + break; + } + break; + + default: + grub_printf ("/UnknownType(%x,%x)\n", + (unsigned) type, + (unsigned) subtype); + return; + break; + } + + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp)) + break; + + dp = (grub_efi_device_path_t *) ((char *) dp + len); + } +} + +/* Compare device paths. */ +int +grub_efi_compare_device_paths (const grub_efi_device_path_t *dp1, + const grub_efi_device_path_t *dp2) +{ + if (! dp1 || ! dp2) + /* Return non-zero. */ + return 1; + + if (dp1 == dp2) + return 0; + + while (GRUB_EFI_DEVICE_PATH_VALID (dp1) && GRUB_EFI_DEVICE_PATH_VALID (dp2)) + { + grub_efi_uint8_t type1, type2; + grub_efi_uint8_t subtype1, subtype2; + grub_efi_uint16_t len1, len2; + int ret; + + type1 = GRUB_EFI_DEVICE_PATH_TYPE (dp1); + type2 = GRUB_EFI_DEVICE_PATH_TYPE (dp2); + + if (type1 != type2) + return (int) type2 - (int) type1; + + subtype1 = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp1); + subtype2 = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp2); + + if (subtype1 != subtype2) + return (int) subtype1 - (int) subtype2; + + len1 = GRUB_EFI_DEVICE_PATH_LENGTH (dp1); + len2 = GRUB_EFI_DEVICE_PATH_LENGTH (dp2); + + if (len1 != len2) + return (int) len1 - (int) len2; + + ret = grub_memcmp (dp1, dp2, len1); + if (ret != 0) + return ret; + + if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp1)) + break; + + dp1 = (grub_efi_device_path_t *) ((char *) dp1 + len1); + dp2 = (grub_efi_device_path_t *) ((char *) dp2 + len2); + } + + /* + * There's no "right" answer here, but we probably don't want to call a valid + * dp and an invalid dp equal, so pick one way or the other. + */ + if (GRUB_EFI_DEVICE_PATH_VALID (dp1) && !GRUB_EFI_DEVICE_PATH_VALID (dp2)) + return 1; + else if (!GRUB_EFI_DEVICE_PATH_VALID (dp1) && GRUB_EFI_DEVICE_PATH_VALID (dp2)) + return -1; + + return 0; +} |