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Diffstat (limited to 'src/boot/efi/boot.c')
-rw-r--r--src/boot/efi/boot.c108
1 files changed, 60 insertions, 48 deletions
diff --git a/src/boot/efi/boot.c b/src/boot/efi/boot.c
index 827c11844c..30c1ead1aa 100644
--- a/src/boot/efi/boot.c
+++ b/src/boot/efi/boot.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
@@ -18,11 +16,13 @@
#include <efi.h>
#include <efilib.h>
-#include "util.h"
#include "console.h"
+#include "disk.h"
#include "graphics.h"
-#include "pefile.h"
#include "linux.h"
+#include "pefile.h"
+#include "util.h"
+#include "measure.h"
#ifndef EFI_OS_INDICATIONS_BOOT_TO_FW_UI
#define EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001ULL
@@ -69,16 +69,14 @@ typedef struct {
BOOLEAN no_editor;
} Config;
-static VOID cursor_left(UINTN *cursor, UINTN *first)
-{
+static VOID cursor_left(UINTN *cursor, UINTN *first) {
if ((*cursor) > 0)
(*cursor)--;
else if ((*first) > 0)
(*first)--;
}
-static VOID cursor_right(UINTN *cursor, UINTN *first, UINTN x_max, UINTN len)
-{
+static VOID cursor_right(UINTN *cursor, UINTN *first, UINTN x_max, UINTN len) {
if ((*cursor)+1 < x_max)
(*cursor)++;
else if ((*first) + (*cursor) < len)
@@ -855,13 +853,11 @@ static VOID config_entry_free(ConfigEntry *entry) {
FreePool(entry->options);
}
-static BOOLEAN is_digit(CHAR16 c)
-{
+static BOOLEAN is_digit(CHAR16 c) {
return (c >= '0') && (c <= '9');
}
-static UINTN c_order(CHAR16 c)
-{
+static UINTN c_order(CHAR16 c) {
if (c == '\0')
return 0;
if (is_digit(c))
@@ -872,8 +868,7 @@ static UINTN c_order(CHAR16 c)
return c + 0x10000;
}
-static INTN str_verscmp(CHAR16 *s1, CHAR16 *s2)
-{
+static INTN str_verscmp(CHAR16 *s1, CHAR16 *s2) {
CHAR16 *os1 = s1;
CHAR16 *os2 = s2;
@@ -1139,13 +1134,11 @@ static VOID config_entry_add_from_file(Config *config, EFI_HANDLE *device, CHAR1
config_add_entry(config, entry);
}
-static VOID config_load(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir, CHAR16 *loaded_image_path) {
- EFI_FILE_HANDLE entries_dir;
- EFI_STATUS err;
+static VOID config_load_defaults(Config *config, EFI_FILE *root_dir) {
CHAR8 *content = NULL;
UINTN sec;
UINTN len;
- UINTN i;
+ EFI_STATUS err;
len = file_read(root_dir, L"\\loader\\loader.conf", 0, 0, &content);
if (len > 0)
@@ -1158,6 +1151,11 @@ static VOID config_load(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir,
config->timeout_sec = sec;
} else
config->timeout_sec_efivar = -1;
+}
+
+static VOID config_load_entries(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir, CHAR16 *loaded_image_path) {
+ EFI_FILE_HANDLE entries_dir;
+ EFI_STATUS err;
err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &entries_dir, L"\\loader\\entries", EFI_FILE_MODE_READ, 0ULL);
if (!EFI_ERROR(err)) {
@@ -1194,8 +1192,11 @@ static VOID config_load(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir,
}
uefi_call_wrapper(entries_dir->Close, 1, entries_dir);
}
+}
+
+static VOID config_sort_entries(Config *config) {
+ UINTN i;
- /* sort entries after version number */
for (i = 1; i < config->entry_count; i++) {
BOOLEAN more;
UINTN k;
@@ -1495,6 +1496,7 @@ static VOID config_entry_add_osx(Config *config) {
static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_image, EFI_FILE *root_dir) {
EFI_FILE_HANDLE linux_dir;
EFI_STATUS err;
+ ConfigEntry *entry;
err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &linux_dir, L"\\EFI\\Linux", EFI_FILE_MODE_READ, 0ULL);
if (!EFI_ERROR(err)) {
@@ -1504,6 +1506,7 @@ static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_ima
EFI_FILE_INFO *f;
CHAR8 *sections[] = {
(UINT8 *)".osrel",
+ (UINT8 *)".cmdline",
NULL
};
UINTN offs[ELEMENTSOF(sections)-1] = {};
@@ -1535,7 +1538,7 @@ static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_ima
if (StriCmp(f->FileName + len - 4, L".efi") != 0)
continue;
- /* look for an .osrel section in the .efi binary */
+ /* look for .osrel and .cmdline sections in the .efi binary */
err = pefile_locate_sections(linux_dir, f->FileName, sections, addrs, offs, szs);
if (EFI_ERROR(err))
continue;
@@ -1575,10 +1578,21 @@ static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_ima
if (os_name && os_id && (os_version || os_build)) {
CHAR16 *conf;
CHAR16 *path;
+ CHAR16 *cmdline;
conf = PoolPrint(L"%s-%s", os_id, os_version ? : os_build);
path = PoolPrint(L"\\EFI\\Linux\\%s", f->FileName);
- config_entry_add_loader(config, loaded_image->DeviceHandle, LOADER_LINUX, conf, 'l', os_name, path);
+ entry = config_entry_add_loader(config, loaded_image->DeviceHandle, LOADER_LINUX, conf, 'l', os_name, path);
+
+ FreePool(content);
+ /* read the embedded cmdline file */
+ len = file_read(linux_dir, f->FileName, offs[1], szs[1] - 1 , &content);
+ if (len > 0) {
+ cmdline = stra_to_str(content);
+ entry->options = cmdline;
+ cmdline = NULL;
+ }
+ FreePool(cmdline);
FreePool(conf);
FreePool(path);
}
@@ -1631,6 +1645,18 @@ static EFI_STATUS image_start(EFI_HANDLE parent_image, const Config *config, con
}
loaded_image->LoadOptions = options;
loaded_image->LoadOptionsSize = (StrLen(loaded_image->LoadOptions)+1) * sizeof(CHAR16);
+
+#ifdef SD_BOOT_LOG_TPM
+ /* Try to log any options to the TPM, escpecially to catch manually edited options */
+ err = tpm_log_event(SD_TPM_PCR,
+ (EFI_PHYSICAL_ADDRESS) loaded_image->LoadOptions,
+ loaded_image->LoadOptionsSize, loaded_image->LoadOptions);
+ if (EFI_ERROR(err)) {
+ Print(L"Unable to add image options measurement: %r", err);
+ uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
+ return err;
+ }
+#endif
}
efivar_set_time_usec(L"LoaderTimeExecUSec", 0);
@@ -1683,11 +1709,11 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
EFI_LOADED_IMAGE *loaded_image;
EFI_FILE *root_dir;
CHAR16 *loaded_image_path;
- EFI_DEVICE_PATH *device_path;
EFI_STATUS err;
Config config;
UINT64 init_usec;
BOOLEAN menu = FALSE;
+ CHAR16 uuid[37];
InitializeLib(image, sys_table);
init_usec = time_usec();
@@ -1709,29 +1735,8 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
}
/* export the device path this image is started from */
- device_path = DevicePathFromHandle(loaded_image->DeviceHandle);
- if (device_path) {
- EFI_DEVICE_PATH *path, *paths;
-
- paths = UnpackDevicePath(device_path);
- for (path = paths; !IsDevicePathEnd(path); path = NextDevicePathNode(path)) {
- HARDDRIVE_DEVICE_PATH *drive;
- CHAR16 uuid[37];
-
- if (DevicePathType(path) != MEDIA_DEVICE_PATH)
- continue;
- if (DevicePathSubType(path) != MEDIA_HARDDRIVE_DP)
- continue;
- drive = (HARDDRIVE_DEVICE_PATH *)path;
- if (drive->SignatureType != SIGNATURE_TYPE_GUID)
- continue;
-
- GuidToString(uuid, (EFI_GUID *)&drive->Signature);
- efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
- break;
- }
- FreePool(paths);
- }
+ if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS)
+ efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
root_dir = LibOpenRoot(loaded_image->DeviceHandle);
if (!root_dir) {
@@ -1745,12 +1750,19 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
loaded_image_path = DevicePathToStr(loaded_image->FilePath);
efivar_set(L"LoaderImageIdentifier", loaded_image_path, FALSE);
- /* scan "\loader\entries\*.conf" files */
ZeroMem(&config, sizeof(Config));
- config_load(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path);
+ config_load_defaults(&config, root_dir);
- /* if we find some well-known loaders, add them to the end of the list */
+ /* scan /EFI/Linux/ directory */
config_entry_add_linux(&config, loaded_image, root_dir);
+
+ /* scan /loader/entries/\*.conf files */
+ config_load_entries(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path);
+
+ /* sort entries after version number */
+ config_sort_entries(&config);
+
+ /* if we find some well-known loaders, add them to the end of the list */
config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
L"auto-windows", 'w', L"Windows Boot Manager", L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi");
config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-22 22:41:48 +0000