diff options
Diffstat (limited to 'util/cbfstool/fit.h')
| -rw-r--r-- | util/cbfstool/fit.h | 60 |
1 files changed, 50 insertions, 10 deletions
diff --git a/util/cbfstool/fit.h b/util/cbfstool/fit.h index 42b3b4722a..e5872ab599 100644 --- a/util/cbfstool/fit.h +++ b/util/cbfstool/fit.h @@ -2,6 +2,8 @@ * Firmware Interface Table support. * * Copyright (C) 2012 Google Inc. + * Copyright (C) 2019 9elements Agency GmbH + * Copyright (C) 2019 Facebook Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -19,6 +21,26 @@ #include "cbfs_image.h" #include "common.h" +/** + * Based on "Intel Trusted Execution Technology (Intel TXT) LAB Handout" and + * https://github.com/slimbootloader/slimbootloader/ + */ +enum fit_type { + FIT_TYPE_HEADER = 0, + FIT_TYPE_MICROCODE = 1, + FIT_TYPE_BIOS_ACM = 2, + FIT_TYPE_BIOS_STARTUP = 7, + FIT_TYPE_TPM_POLICY = 8, + FIT_TYPE_BIOS_POLICY = 9, + FIT_TYPE_TXT_POLICY = 0xa, + FIT_TYPE_KEY_MANIFEST = 0xb, + FIT_TYPE_BOOT_POLICY = 0xc, + FIT_TYPE_CSE_SECURE_BOOT = 0x10, + FIT_TYPE_TXTSX_POLICY = 0x2d, + FIT_TYPE_JMP_DEBUG_POLICY = 0x2f, + FIT_TYPE_UNUSED = 127, +}; + /* * Converts between offsets from the start of the specified image region and * "top-aligned" offsets from the top of the entire flash image. Should work in @@ -28,15 +50,33 @@ typedef unsigned (*fit_offset_converter_t)(const struct buffer *region, unsigned offset); -/* - * populate FIT with the MCUs prepsent in the blob provided. - * - * first_mcu_addr is an address (in ROM) that will point to a - * microcode patch. When provided, it will be forced as the first - * MCU entry into the FIT located in the topswap bootblock. - */ +struct fit_table; + +struct fit_table *fit_get_table(struct buffer *bootblock, + fit_offset_converter_t offset_fn, + uint32_t topswap_size); +int fit_dump(struct fit_table *fit); +int fit_clear_table(struct fit_table *fit); +int fit_is_supported_type(const enum fit_type type); +int fit_add_entry(struct fit_table *fit, + const uint32_t offset, + const uint32_t len, + const enum fit_type type, + const size_t max_fit_entries); +int fit_delete_entry(struct fit_table *fit, + const size_t idx); + +int fit_add_microcode_file(struct fit_table *fit, + struct cbfs_image *image, + const char *blob_name, + fit_offset_converter_t offset_helper, + const size_t max_fit_entries); + +/* Legacy code */ int fit_update_table(struct buffer *bootblock, struct cbfs_image *image, - const char *microcode_blob_name, int empty_entries, - fit_offset_converter_t offset_fn, - uint32_t topswap_size, uint32_t first_mcu_addr); + const char *microcode_blob_name, + unsigned int empty_entries, + fit_offset_converter_t offset_fn, uint32_t topswap_size, + uint32_t first_mcu_addr); + #endif |