| /* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Display functions used in kernel selection. |
| */ |
| |
| #include "sysincludes.h" |
| #include "2sysincludes.h" |
| |
| #include "2common.h" |
| #include "2nvstorage.h" |
| #include "2sha.h" |
| #include "bmpblk_font.h" |
| #include "gbb_access.h" |
| #include "gbb_header.h" |
| #include "region.h" |
| #include "utility.h" |
| #include "vboot_api.h" |
| #include "vboot_common.h" |
| #include "vboot_display.h" |
| #include "vboot_nvstorage.h" |
| |
| static uint32_t disp_current_screen = VB_SCREEN_BLANK; |
| static uint32_t disp_current_index = 0; |
| static uint32_t disp_disabled_idx_mask = 0; |
| static uint32_t disp_width = 0, disp_height = 0; |
| |
| __attribute__((weak)) |
| VbError_t VbExGetLocalizationCount(uint32_t *count) { |
| return VBERROR_UNKNOWN; |
| } |
| |
| VbError_t VbGetLocalizationCount(VbCommonParams *cparams, uint32_t *count) |
| { |
| BmpBlockHeader hdr; |
| VbError_t ret; |
| |
| /* Default to 0 on error */ |
| *count = 0; |
| |
| /* First try to get the count from GBB */ |
| ret = VbGbbReadBmpHeader(cparams, &hdr); |
| if (ret == VBERROR_SUCCESS) { |
| *count = hdr.number_of_localizations; |
| return ret; |
| } |
| |
| /* If GBB is broken or missing, fallback to the callback */ |
| return VbExGetLocalizationCount(count); |
| } |
| |
| /* |
| * TODO: We could cache the font info to speed things up, by making the |
| * in-memory font structure distinct from the in-flash version. We'll do that |
| * Real Soon Now. Until then, we just repeat the same linear search every time. |
| */ |
| |
| VbFont_t *VbInternalizeFontData(FontArrayHeader *fonthdr) |
| { |
| /* Just return the raw data pointer for now. */ |
| return (VbFont_t *)fonthdr; |
| } |
| |
| void VbDoneWithFontForNow(VbFont_t *ptr) |
| { |
| /* Nothing. */ |
| } |
| |
| ImageInfo *VbFindFontGlyph(VbFont_t *font, uint32_t ascii, |
| void **bufferptr, uint32_t *buffersize) |
| { |
| uint8_t *ptr, *firstptr; |
| uint32_t max; |
| uint32_t i; |
| FontArrayEntryHeader *entry; |
| |
| ptr = (uint8_t *)font; |
| max = ((FontArrayHeader *)ptr)->num_entries; |
| ptr += sizeof(FontArrayHeader); |
| firstptr = ptr; |
| |
| /* |
| * Simple linear search. |
| * |
| * Note: We're assuming glpyhs are uncompressed. That's true because |
| * the bmpblk_font tool doesn't compress anything. The bmpblk_utility |
| * does, but it compresses the entire font blob at once, and we've |
| * already uncompressed that before we got here. |
| */ |
| for(i=0; i<max; i++) { |
| entry = (FontArrayEntryHeader *)ptr; |
| if (entry->ascii == ascii) { |
| *bufferptr = ptr + sizeof(FontArrayEntryHeader); |
| *buffersize = entry->info.original_size; |
| return &(entry->info); |
| } |
| ptr += sizeof(FontArrayEntryHeader)+entry->info.compressed_size; |
| } |
| |
| /* |
| * We must return something valid. We'll just use the first glyph in |
| * the font structure (so it should be something distinct). |
| */ |
| entry = (FontArrayEntryHeader *)firstptr; |
| *bufferptr = firstptr + sizeof(FontArrayEntryHeader); |
| *buffersize = entry->info.original_size; |
| return &(entry->info); |
| } |
| |
| void VbRenderTextAtPos(const char *text, int right_to_left, |
| uint32_t x, uint32_t y, VbFont_t *font) |
| { |
| int i; |
| ImageInfo *image_info = 0; |
| void *buffer; |
| uint32_t buffersize; |
| uint32_t cur_x = x, cur_y = y; |
| |
| if (!text || !font) { |
| VB2_DEBUG(" VbRenderTextAtPos: invalid args\n"); |
| return; |
| } |
| |
| for (i=0; text[i]; i++) { |
| |
| if (text[i] == '\n') { |
| if (!image_info) |
| image_info = VbFindFontGlyph(font, text[i], |
| &buffer, |
| &buffersize); |
| cur_x = x; |
| cur_y += image_info->height; |
| continue; |
| } |
| |
| image_info = VbFindFontGlyph(font, text[i], &buffer, |
| &buffersize); |
| |
| if (right_to_left) |
| cur_x -= image_info->width; |
| |
| if (VBERROR_SUCCESS != VbExDisplayImage(cur_x, cur_y, buffer, |
| buffersize)) { |
| VB2_DEBUG(" VbRenderTextAtPos: " |
| "can't display ascii 0x%x\n", text[i]); |
| } |
| |
| if (!right_to_left) |
| cur_x += image_info->width; |
| } |
| } |
| |
| VbError_t VbDisplayScreenFromGBB(struct vb2_context *ctx, |
| VbCommonParams *cparams, uint32_t screen, |
| uint32_t localization) |
| { |
| char *fullimage = NULL; |
| BmpBlockHeader hdr; |
| uint32_t screen_index; |
| VbError_t retval = VBERROR_UNKNOWN; /* Assume error until proven ok */ |
| uint32_t inoutsize; |
| uint32_t i; |
| VbFont_t *font; |
| const char *text_to_show; |
| int rtol = 0; |
| VbError_t ret; |
| |
| ret = VbGbbReadBmpHeader(cparams, &hdr); |
| if (ret) |
| return ret; |
| |
| /* |
| * Translate screen ID into index. Note that not all screens are in |
| * the GBB. |
| * |
| * TODO: ensure screen IDs match indices? Having this translation here |
| * is awful. |
| */ |
| switch (screen) { |
| case VB_SCREEN_DEVELOPER_WARNING: |
| screen_index = SCREEN_DEVELOPER_WARNING; |
| break; |
| case VB_SCREEN_RECOVERY_REMOVE: |
| screen_index = SCREEN_RECOVERY_REMOVE; |
| break; |
| case VB_SCREEN_RECOVERY_NO_GOOD: |
| screen_index = SCREEN_RECOVERY_NO_GOOD; |
| break; |
| case VB_SCREEN_RECOVERY_INSERT: |
| screen_index = SCREEN_RECOVERY_INSERT; |
| break; |
| case VB_SCREEN_RECOVERY_TO_DEV: |
| screen_index = SCREEN_RECOVERY_TO_DEV; |
| break; |
| case VB_SCREEN_DEVELOPER_TO_NORM: |
| screen_index = SCREEN_DEVELOPER_TO_NORM; |
| break; |
| case VB_SCREEN_WAIT: |
| screen_index = SCREEN_WAIT; |
| break; |
| case VB_SCREEN_TO_NORM_CONFIRMED: |
| screen_index = SCREEN_TO_NORM_CONFIRMED; |
| break; |
| case VB_SCREEN_OS_BROKEN: |
| screen_index = SCREEN_OS_BROKEN; |
| break; |
| case VB_SCREEN_BLANK: |
| case VB_SCREEN_DEVELOPER_EGG: |
| default: |
| /* Screens which aren't in the GBB */ |
| VB2_DEBUG("VbDisplayScreenFromGBB(): screen %d not in GBB\n", |
| (int)screen); |
| retval = VBERROR_INVALID_SCREEN_INDEX; |
| goto VbDisplayScreenFromGBB_exit; |
| } |
| |
| if (screen_index >= hdr.number_of_screenlayouts) { |
| VB2_DEBUG("VbDisplayScreenFromGBB(): " |
| "screen %d index %d not in the GBB\n", |
| (int)screen, (int)screen_index); |
| retval = VBERROR_INVALID_SCREEN_INDEX; |
| goto VbDisplayScreenFromGBB_exit; |
| } |
| |
| /* Clip localization to number of localizations present in the GBB */ |
| if (localization >= hdr.number_of_localizations) { |
| localization = 0; |
| vb2_nv_set(ctx, VB2_NV_LOCALIZATION_INDEX, localization); |
| vb2_nv_set(ctx, VB2_NV_BACKUP_NVRAM_REQUEST, 1); |
| } |
| |
| /* Display all bitmaps for the image */ |
| for (i = 0; i < MAX_IMAGE_IN_LAYOUT; i++) { |
| ScreenLayout layout; |
| ImageInfo image_info; |
| char hwid[256]; |
| |
| ret = VbGbbReadImage(cparams, localization, screen_index, |
| i, &layout, &image_info, |
| &fullimage, &inoutsize); |
| if (ret == VBERROR_NO_IMAGE_PRESENT) { |
| continue; |
| } else if (ret) { |
| retval = ret; |
| goto VbDisplayScreenFromGBB_exit; |
| } |
| |
| switch(image_info.format) { |
| case FORMAT_BMP: |
| if (i == 0) { |
| /** |
| * In current version GBB bitmaps, first image |
| * is always the background. |
| */ |
| ret = VbExDisplaySetDimension( |
| image_info.width, |
| image_info.height); |
| if (ret) { |
| VB2_DEBUG("VbExDisplaySetDimension" |
| "(%d,%d): failed (%#x).\n", |
| image_info.width, |
| image_info.height, ret); |
| } |
| } |
| |
| retval = VbExDisplayImage(layout.images[i].x, |
| layout.images[i].y, |
| fullimage, inoutsize); |
| break; |
| |
| case FORMAT_FONT: |
| /* |
| * The uncompressed blob is our font structure. Cache |
| * it as needed. |
| */ |
| font = VbInternalizeFontData( |
| (FontArrayHeader *)fullimage); |
| |
| /* TODO: handle text in general here */ |
| if (TAG_HWID == image_info.tag || |
| TAG_HWID_RTOL == image_info.tag) { |
| VbRegionReadHWID(cparams, hwid, sizeof(hwid)); |
| text_to_show = hwid; |
| rtol = (TAG_HWID_RTOL == image_info.tag); |
| } else { |
| text_to_show = ""; |
| rtol = 0; |
| } |
| |
| VbRenderTextAtPos(text_to_show, rtol, |
| layout.images[i].x, |
| layout.images[i].y, font); |
| |
| VbDoneWithFontForNow(font); |
| break; |
| |
| default: |
| VB2_DEBUG("VbDisplayScreenFromGBB(): " |
| "unsupported ImageFormat %d\n", |
| image_info.format); |
| retval = VBERROR_INVALID_GBB; |
| } |
| |
| free(fullimage); |
| |
| if (VBERROR_SUCCESS != retval) |
| goto VbDisplayScreenFromGBB_exit; |
| } |
| |
| /* Successful if all bitmaps displayed */ |
| retval = VBERROR_SUCCESS; |
| |
| VbRegionCheckVersion(cparams); |
| |
| VbDisplayScreenFromGBB_exit: |
| VB2_DEBUG("leaving VbDisplayScreenFromGBB() with %d\n",retval); |
| return retval; |
| } |
| |
| /* |
| * This is the deprecated display screen function. This should be called only |
| * if bmpblk.bin is found in GBB. New devices store graphics data in cbfs |
| * and screens are rendered by Depthcharge (chromium:502066). |
| */ |
| static VbError_t VbDisplayScreenLegacy(struct vb2_context *ctx, |
| VbCommonParams *cparams, uint32_t screen, |
| int force, uint32_t locale) |
| { |
| VbError_t retval; |
| |
| /* Initialize display if necessary */ |
| if (!disp_width) { |
| retval = VbExDisplayInit(&disp_width, &disp_height); |
| if (VBERROR_SUCCESS != retval) |
| return retval; |
| } |
| |
| /* If the screen is blank, turn off the backlight; else turn it on. */ |
| VbExDisplayBacklight(VB_SCREEN_BLANK == screen ? 0 : 1); |
| |
| /* Look in the GBB first */ |
| if (VBERROR_SUCCESS == VbDisplayScreenFromGBB(ctx, cparams, screen, |
| locale)) |
| return VBERROR_SUCCESS; |
| |
| /* If screen wasn't in the GBB bitmaps, fall back to a default */ |
| return VbExDisplayScreen(screen, locale); |
| } |
| |
| VbError_t VbDisplayScreen(struct vb2_context *ctx, |
| VbCommonParams *cparams, uint32_t screen, int force) |
| { |
| uint32_t locale; |
| GoogleBinaryBlockHeader *gbb = cparams->gbb; |
| VbError_t rv; |
| |
| /* If requested screen is the same as the current one, we're done. */ |
| if (disp_current_screen == screen && !force) |
| return VBERROR_SUCCESS; |
| |
| /* Read the locale last saved */ |
| locale = vb2_nv_get(ctx, VB2_NV_LOCALIZATION_INDEX); |
| |
| if (gbb->bmpfv_size == 0) |
| rv = VbExDisplayScreen(screen, locale); |
| else |
| rv = VbDisplayScreenLegacy(ctx, cparams, screen, force, locale); |
| |
| if (rv == VBERROR_SUCCESS) |
| /* Keep track of the currently displayed screen */ |
| disp_current_screen = screen; |
| |
| return rv; |
| } |
| |
| VbError_t VbDisplayMenu(struct vb2_context *ctx, |
| VbCommonParams *cparams, uint32_t screen, int force, |
| uint32_t selected_index, uint32_t disabled_idx_mask) |
| { |
| uint32_t locale; |
| VbError_t rv; |
| uint32_t redraw_base_screen = 0; |
| |
| /* |
| * If requested screen/selected_index is the same as the current one, |
| * we're done. |
| */ |
| if (disp_current_screen == screen && |
| disp_current_index == selected_index && |
| !force) |
| return VBERROR_SUCCESS; |
| |
| /* |
| * If current screen is not the same, make sure we redraw the base |
| * screen as well to avoid having artifacts from the menu. |
| */ |
| if (disp_current_screen != screen) |
| redraw_base_screen = 1; |
| |
| /* Read the locale last saved */ |
| locale = vb2_nv_get(ctx, VB2_NV_LOCALIZATION_INDEX); |
| |
| rv = VbExDisplayMenu(screen, locale, selected_index, |
| disabled_idx_mask, redraw_base_screen); |
| |
| if (rv == VBERROR_SUCCESS) { |
| /* |
| * Keep track of the currently displayed screen and |
| * selected_index |
| */ |
| disp_current_screen = screen; |
| disp_current_index = selected_index; |
| disp_disabled_idx_mask = disabled_idx_mask; |
| } |
| |
| return rv; |
| } |
| |
| static void Uint8ToString(char *buf, uint8_t val) |
| { |
| const char *trans = "0123456789abcdef"; |
| *buf++ = trans[val >> 4]; |
| *buf = trans[val & 0xF]; |
| } |
| |
| static void FillInSha1Sum(char *outbuf, VbPublicKey *key) |
| { |
| uint8_t *buf = ((uint8_t *)key) + key->key_offset; |
| uint64_t buflen = key->key_size; |
| uint8_t digest[VB2_SHA1_DIGEST_SIZE]; |
| int i; |
| |
| vb2_digest_buffer(buf, buflen, VB2_HASH_SHA1, digest, sizeof(digest)); |
| for (i = 0; i < sizeof(digest); i++) { |
| Uint8ToString(outbuf, digest[i]); |
| outbuf += 2; |
| } |
| *outbuf = '\0'; |
| } |
| |
| const char *RecoveryReasonString(uint8_t code) |
| { |
| switch(code) { |
| case VBNV_RECOVERY_NOT_REQUESTED: |
| return "Recovery not requested"; |
| case VBNV_RECOVERY_LEGACY: |
| return "Recovery requested from legacy utility"; |
| case VBNV_RECOVERY_RO_MANUAL: |
| return "recovery button pressed"; |
| case VBNV_RECOVERY_RO_INVALID_RW: |
| return "RW firmware failed signature check"; |
| case VBNV_RECOVERY_RO_S3_RESUME: |
| return "S3 resume failed"; |
| case VBNV_RECOVERY_DEP_RO_TPM_ERROR: |
| return "TPM error in read-only firmware"; |
| case VBNV_RECOVERY_RO_SHARED_DATA: |
| return "Shared data error in read-only firmware"; |
| case VBNV_RECOVERY_RO_TEST_S3: |
| return "Test error from S3Resume()"; |
| case VBNV_RECOVERY_RO_TEST_LFS: |
| return "Test error from LoadFirmwareSetup()"; |
| case VBNV_RECOVERY_RO_TEST_LF: |
| return "Test error from LoadFirmware()"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_NOT_DONE: |
| return "RW firmware check not done"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_DEV_MISMATCH: |
| return "RW firmware developer flag mismatch"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_REC_MISMATCH: |
| return "RW firmware recovery flag mismatch"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + |
| VBSD_LF_CHECK_VERIFY_KEYBLOCK: |
| return "RW firmware unable to verify key block"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_KEY_ROLLBACK: |
| return "RW firmware key version rollback detected"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + |
| VBSD_LF_CHECK_DATA_KEY_PARSE: |
| return "RW firmware unable to parse data key"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + |
| VBSD_LF_CHECK_VERIFY_PREAMBLE: |
| return "RW firmware unable to verify preamble"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_FW_ROLLBACK: |
| return "RW firmware version rollback detected"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_GET_FW_BODY: |
| return "RW firmware unable to get firmware body"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + |
| VBSD_LF_CHECK_HASH_WRONG_SIZE: |
| return "RW firmware hash is wrong size"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_VERIFY_BODY: |
| return "RW firmware unable to verify firmware body"; |
| case VBNV_RECOVERY_RO_INVALID_RW_CHECK_MIN + VBSD_LF_CHECK_NO_RO_NORMAL: |
| return "RW firmware read-only normal path is not supported"; |
| case VBNV_RECOVERY_RO_FIRMWARE: |
| return "Firmware problem outside of verified boot"; |
| case VBNV_RECOVERY_RO_TPM_REBOOT: |
| return "TPM requires a system reboot (should be transient)"; |
| case VBNV_RECOVERY_EC_SOFTWARE_SYNC: |
| return "EC software sync error"; |
| case VBNV_RECOVERY_EC_UNKNOWN_IMAGE: |
| return "EC software sync unable to determine active EC image"; |
| case VBNV_RECOVERY_DEP_EC_HASH: |
| return "EC software sync error obtaining EC image hash"; |
| case VBNV_RECOVERY_EC_EXPECTED_IMAGE: |
| return "EC software sync error " |
| "obtaining expected EC image from BIOS"; |
| case VBNV_RECOVERY_EC_EXPECTED_HASH: |
| return "EC software sync error " |
| "obtaining expected EC hash from BIOS"; |
| case VBNV_RECOVERY_EC_HASH_MISMATCH: |
| return "EC software sync error " |
| "comparing expected EC hash and image"; |
| case VBNV_RECOVERY_EC_UPDATE: |
| return "EC software sync error updating EC"; |
| case VBNV_RECOVERY_EC_JUMP_RW: |
| return "EC software sync unable to jump to EC-RW"; |
| case VBNV_RECOVERY_EC_PROTECT: |
| return "EC software sync protection error"; |
| case VBNV_RECOVERY_VB2_SECDATA_INIT: |
| return "Secure NVRAM (TPM) initialization error"; |
| case VBNV_RECOVERY_VB2_GBB_HEADER: |
| return "Error parsing GBB header"; |
| case VBNV_RECOVERY_VB2_TPM_CLEAR_OWNER: |
| return "Error trying to clear TPM owner"; |
| case VBNV_RECOVERY_VB2_DEV_SWITCH: |
| return "Error reading or updating developer switch"; |
| case VBNV_RECOVERY_VB2_FW_SLOT: |
| return "Error selecting RW firmware slot"; |
| case VBNV_RECOVERY_RO_UNSPECIFIED: |
| return "Unspecified/unknown error in RO firmware"; |
| case VBNV_RECOVERY_RW_DEV_SCREEN: |
| return "User requested recovery from dev-mode warning screen"; |
| case VBNV_RECOVERY_RW_NO_OS: |
| return "No OS kernel detected (or kernel rollback attempt?)"; |
| case VBNV_RECOVERY_RW_INVALID_OS: |
| return "OS kernel failed signature check"; |
| case VBNV_RECOVERY_DEP_RW_TPM_ERROR: |
| return "TPM error in rewritable firmware"; |
| case VBNV_RECOVERY_RW_DEV_MISMATCH: |
| return "RW firmware in dev mode, but dev switch is off"; |
| case VBNV_RECOVERY_RW_SHARED_DATA: |
| return "Shared data error in rewritable firmware"; |
| case VBNV_RECOVERY_RW_TEST_LK: |
| return "Test error from LoadKernel()"; |
| case VBNV_RECOVERY_DEP_RW_NO_DISK: |
| return "No bootable disk found"; |
| case VBNV_RECOVERY_TPM_E_FAIL: |
| return "TPM error that was not fixed by reboot"; |
| case VBNV_RECOVERY_RO_TPM_S_ERROR: |
| return "TPM setup error in read-only firmware"; |
| case VBNV_RECOVERY_RO_TPM_W_ERROR: |
| return "TPM write error in read-only firmware"; |
| case VBNV_RECOVERY_RO_TPM_L_ERROR: |
| return "TPM lock error in read-only firmware"; |
| case VBNV_RECOVERY_RO_TPM_U_ERROR: |
| return "TPM update error in read-only firmware"; |
| case VBNV_RECOVERY_RW_TPM_R_ERROR: |
| return "TPM read error in rewritable firmware"; |
| case VBNV_RECOVERY_RW_TPM_W_ERROR: |
| return "TPM write error in rewritable firmware"; |
| case VBNV_RECOVERY_RW_TPM_L_ERROR: |
| return "TPM lock error in rewritable firmware"; |
| case VBNV_RECOVERY_EC_HASH_FAILED: |
| return "EC software sync unable to get EC image hash"; |
| case VBNV_RECOVERY_EC_HASH_SIZE: |
| return "EC software sync invalid image hash size"; |
| case VBNV_RECOVERY_LK_UNSPECIFIED: |
| return "Unspecified error while trying to load kernel"; |
| case VBNV_RECOVERY_RW_NO_DISK: |
| return "No bootable storage device in system"; |
| case VBNV_RECOVERY_RW_NO_KERNEL: |
| return "No bootable kernel found on disk"; |
| case VBNV_RECOVERY_RW_BCB_ERROR: |
| return "BCB partition error on disk"; |
| case VBNV_RECOVERY_FW_FASTBOOT: |
| return "Fastboot-mode requested in firmware"; |
| case VBNV_RECOVERY_RO_TPM_REC_HASH_L_ERROR: |
| return "Recovery hash space lock error in RO firmware"; |
| case VBNV_RECOVERY_RW_UNSPECIFIED: |
| return "Unspecified/unknown error in RW firmware"; |
| case VBNV_RECOVERY_KE_DM_VERITY: |
| return "DM-verity error"; |
| case VBNV_RECOVERY_KE_UNSPECIFIED: |
| return "Unspecified/unknown error in kernel"; |
| case VBNV_RECOVERY_US_TEST: |
| return "Recovery mode test from user-mode"; |
| case VBNV_RECOVERY_BCB_USER_MODE: |
| return "User-mode requested recovery via BCB"; |
| case VBNV_RECOVERY_US_FASTBOOT: |
| return "User-mode requested fastboot mode"; |
| case VBNV_RECOVERY_TRAIN_AND_REBOOT: |
| return "User-mode requested DRAM train and reboot"; |
| case VBNV_RECOVERY_US_UNSPECIFIED: |
| return "Unspecified/unknown error in user-mode"; |
| } |
| return "We have no idea what this means"; |
| } |
| |
| #define DEBUG_INFO_SIZE 512 |
| |
| VbError_t VbDisplayDebugInfo(struct vb2_context *ctx, VbCommonParams *cparams) |
| { |
| VbSharedDataHeader *shared = |
| (VbSharedDataHeader *)cparams->shared_data_blob; |
| GoogleBinaryBlockHeader *gbb = cparams->gbb; |
| char buf[DEBUG_INFO_SIZE] = ""; |
| char sha1sum[VB2_SHA1_DIGEST_SIZE * 2 + 1]; |
| char hwid[256]; |
| uint32_t used = 0; |
| VbPublicKey *key; |
| VbError_t ret; |
| uint32_t i; |
| |
| /* Redisplay current screen to overwrite any previous debug output. |
| * Need to use VbDisplayMenu instead of VbDisplayScreen |
| * in order to ensure that the selected menu item is |
| * highlighted. On a non-detachable screen, this will be a |
| * no-op. |
| */ |
| VbDisplayMenu(ctx, cparams, disp_current_screen, 1, |
| disp_current_index, disp_disabled_idx_mask); |
| |
| /* Add hardware ID */ |
| VbRegionReadHWID(cparams, hwid, sizeof(hwid)); |
| used += StrnAppend(buf + used, "HWID: ", DEBUG_INFO_SIZE - used); |
| used += StrnAppend(buf + used, hwid, DEBUG_INFO_SIZE - used); |
| |
| /* Add recovery reason and subcode */ |
| i = vb2_nv_get(ctx, VB2_NV_RECOVERY_SUBCODE); |
| used += StrnAppend(buf + used, |
| "\nrecovery_reason: 0x", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| shared->recovery_reason, 16, 2); |
| used += StrnAppend(buf + used, " / 0x", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 16, 2); |
| used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used); |
| used += StrnAppend(buf + used, |
| RecoveryReasonString(shared->recovery_reason), |
| DEBUG_INFO_SIZE - used); |
| |
| /* Add VbSharedData flags */ |
| used += StrnAppend(buf + used, "\nVbSD.flags: 0x", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| shared->flags, 16, 8); |
| |
| /* Add raw contents of VbNvStorage */ |
| used += StrnAppend(buf + used, "\nVbNv.raw:", DEBUG_INFO_SIZE - used); |
| for (i = 0; i < VBNV_BLOCK_SIZE; i++) { |
| used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| ctx->nvdata[i], 16, 2); |
| } |
| |
| /* Add dev_boot_usb flag */ |
| i = vb2_nv_get(ctx, VB2_NV_DEV_BOOT_USB); |
| used += StrnAppend(buf + used, "\ndev_boot_usb: ", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0); |
| |
| /* Add dev_boot_legacy flag */ |
| i = vb2_nv_get(ctx, VB2_NV_DEV_BOOT_LEGACY); |
| used += StrnAppend(buf + used, |
| "\ndev_boot_legacy: ", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0); |
| |
| /* Add dev_default_boot flag */ |
| i = vb2_nv_get(ctx, VB2_NV_DEV_DEFAULT_BOOT); |
| used += StrnAppend(buf + used, |
| "\ndev_default_boot: ", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0); |
| |
| /* Add dev_boot_signed_only flag */ |
| i = vb2_nv_get(ctx, VB2_NV_DEV_BOOT_SIGNED_ONLY); |
| used += StrnAppend(buf + used, "\ndev_boot_signed_only: ", |
| DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0); |
| |
| /* Add dev_boot_fastboot_full_cap flag */ |
| i = vb2_nv_get(ctx, VB2_NV_DEV_BOOT_FASTBOOT_FULL_CAP); |
| used += StrnAppend(buf + used, "\ndev_boot_fastboot_full_cap: ", |
| DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0); |
| |
| /* Add TPM versions */ |
| used += StrnAppend(buf + used, "\nTPM: fwver=0x", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| shared->fw_version_tpm, 16, 8); |
| used += StrnAppend(buf + used, " kernver=0x", DEBUG_INFO_SIZE - used); |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| shared->kernel_version_tpm, 16, 8); |
| |
| /* Add GBB flags */ |
| used += StrnAppend(buf + used, "\ngbb.flags: 0x", DEBUG_INFO_SIZE - used); |
| if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1) { |
| used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, |
| gbb->flags, 16, 8); |
| } else { |
| used += StrnAppend(buf + used, |
| "0 (default)", DEBUG_INFO_SIZE - used); |
| } |
| |
| /* Add sha1sum for Root & Recovery keys */ |
| ret = VbGbbReadRootKey(cparams, &key); |
| if (!ret) { |
| FillInSha1Sum(sha1sum, key); |
| free(key); |
| used += StrnAppend(buf + used, "\ngbb.rootkey: ", |
| DEBUG_INFO_SIZE - used); |
| used += StrnAppend(buf + used, sha1sum, |
| DEBUG_INFO_SIZE - used); |
| } |
| |
| ret = VbGbbReadRecoveryKey(cparams, &key); |
| if (!ret) { |
| FillInSha1Sum(sha1sum, key); |
| free(key); |
| used += StrnAppend(buf + used, "\ngbb.recovery_key: ", |
| DEBUG_INFO_SIZE - used); |
| used += StrnAppend(buf + used, sha1sum, |
| DEBUG_INFO_SIZE - used); |
| } |
| |
| /* If we're in dev-mode, show the kernel subkey that we expect, too. */ |
| if (0 == shared->recovery_reason) { |
| FillInSha1Sum(sha1sum, &shared->kernel_subkey); |
| used += StrnAppend(buf + used, |
| "\nkernel_subkey: ", DEBUG_INFO_SIZE - used); |
| used += StrnAppend(buf + used, sha1sum, DEBUG_INFO_SIZE - used); |
| } |
| |
| /* Make sure we finish with a newline */ |
| used += StrnAppend(buf + used, "\n", DEBUG_INFO_SIZE - used); |
| |
| /* TODO: add more interesting data: |
| * - Information on current disks */ |
| |
| buf[DEBUG_INFO_SIZE - 1] = '\0'; |
| return VbExDisplayDebugInfo(buf); |
| } |
| |
| #define MAGIC_WORD_LEN 5 |
| #define MAGIC_WORD "xyzzy" |
| static uint8_t MagicBuffer[MAGIC_WORD_LEN]; |
| |
| VbError_t VbCheckDisplayKey(struct vb2_context *ctx, VbCommonParams *cparams, |
| uint32_t key) |
| { |
| int i; |
| |
| /* Update key buffer */ |
| for(i = 1; i < MAGIC_WORD_LEN; i++) |
| MagicBuffer[i - 1] = MagicBuffer[i]; |
| /* Save as lower-case ASCII */ |
| MagicBuffer[MAGIC_WORD_LEN - 1] = (key | 0x20) & 0xFF; |
| |
| if ('\t' == key) { |
| /* Tab = display debug info */ |
| return VbDisplayDebugInfo(ctx, cparams); |
| } else if (VB_KEY_LEFT == key || VB_KEY_RIGHT == key || |
| VB_KEY_DOWN == key || VB_KEY_UP == key) { |
| /* Arrow keys = change localization */ |
| uint32_t loc = 0; |
| uint32_t count = 0; |
| |
| loc = vb2_nv_get(ctx, VB2_NV_LOCALIZATION_INDEX); |
| if (VBERROR_SUCCESS != VbGetLocalizationCount(cparams, &count)) |
| loc = 0; /* No localization count (bad GBB?) */ |
| else if (VB_KEY_RIGHT == key || VB_KEY_UP == key) |
| loc = (loc < count - 1 ? loc + 1 : 0); |
| else |
| loc = (loc > 0 ? loc - 1 : count - 1); |
| VB2_DEBUG("VbCheckDisplayKey() - change localization to %d\n", |
| (int)loc); |
| vb2_nv_set(ctx, VB2_NV_LOCALIZATION_INDEX, loc); |
| vb2_nv_set(ctx, VB2_NV_BACKUP_NVRAM_REQUEST, 1); |
| |
| #ifdef SAVE_LOCALE_IMMEDIATELY |
| /* |
| * This is a workaround for coreboot on x86, which will power |
| * off asynchronously without giving us a chance to react. |
| * This is not an example of the Right Way to do things. See |
| * chrome-os-partner:7689. |
| */ |
| if (ctx->flags & VB2_CONTEXT_NVDATA_CHANGED) { |
| VbExNvStorageWrite(ctx.nvdata); |
| ctx.flags &= ~VB2_CONTEXT_NVDATA_CHANGED; |
| } |
| #endif |
| |
| /* Force redraw of current screen */ |
| return VbDisplayScreen(ctx, cparams, disp_current_screen, 1); |
| } |
| |
| if (0 == memcmp(MagicBuffer, MAGIC_WORD, MAGIC_WORD_LEN)) { |
| if (VBEASTEREGG) |
| (void)VbDisplayScreen(ctx, cparams, disp_current_screen, |
| 1); |
| } |
| |
| return VBERROR_SUCCESS; |
| } |