David Brown | c8d6201 | 2021-10-27 15:03:48 -0600 | [diff] [blame] | 1 | // Copyright (c) 2017-2021 Linaro LTD |
David Brown | e2acfae | 2020-01-21 16:45:01 -0700 | [diff] [blame] | 2 | // Copyright (c) 2019 JUUL Labs |
Roland Mikhel | 75c7c31 | 2023-02-23 15:39:14 +0100 | [diff] [blame] | 3 | // Copyright (c) 2019-2023 Arm Limited |
David Brown | e2acfae | 2020-01-21 16:45:01 -0700 | [diff] [blame] | 4 | // |
| 5 | // SPDX-License-Identifier: Apache-2.0 |
| 6 | |
David Brown | 902d617 | 2017-05-05 09:37:41 -0600 | [diff] [blame] | 7 | // Query the bootloader's capabilities. |
| 8 | |
| 9 | #[repr(u32)] |
Fabio Utzig | f5480c7 | 2019-11-28 10:41:57 -0300 | [diff] [blame] | 10 | #[derive(Copy, Clone, Debug, Eq, PartialEq)] |
David Brown | 902d617 | 2017-05-05 09:37:41 -0600 | [diff] [blame] | 11 | #[allow(unused)] |
| 12 | pub enum Caps { |
David Vincze | 2d736ad | 2019-02-18 11:50:22 +0100 | [diff] [blame] | 13 | RSA2048 = (1 << 0), |
Roland Mikhel | 23fdb0d | 2023-06-30 15:26:02 +0200 | [diff] [blame^] | 14 | /* reserved (1 << 1) */ |
| 15 | EcdsaP256 = (1 << 2), |
| 16 | SwapUsingScratch = (1 << 3), |
| 17 | OverwriteUpgrade = (1 << 4), |
| 18 | EncRsa = (1 << 5), |
| 19 | EncKw = (1 << 6), |
| 20 | ValidatePrimarySlot = (1 << 7), |
| 21 | RSA3072 = (1 << 8), |
| 22 | Ed25519 = (1 << 9), |
| 23 | EncEc256 = (1 << 10), |
| 24 | SwapUsingMove = (1 << 11), |
| 25 | DowngradePrevention = (1 << 12), |
| 26 | EncX25519 = (1 << 13), |
| 27 | Bootstrap = (1 << 14), |
| 28 | Aes256 = (1 << 15), |
| 29 | RamLoad = (1 << 16), |
| 30 | DirectXip = (1 << 17), |
| 31 | HwRollbackProtection = (1 << 18), |
David Brown | 902d617 | 2017-05-05 09:37:41 -0600 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | impl Caps { |
| 35 | pub fn present(self) -> bool { |
| 36 | let caps = unsafe { bootutil_get_caps() }; |
| 37 | (caps as u32) & (self as u32) != 0 |
| 38 | } |
David Brown | 4c9883b | 2019-03-05 12:13:33 -0700 | [diff] [blame] | 39 | |
David Brown | b408b43 | 2021-10-27 15:55:39 -0600 | [diff] [blame] | 40 | /// Does this build have ECDSA of some type enabled for signatures. |
| 41 | pub fn has_ecdsa() -> bool { |
Roland Mikhel | 75c7c31 | 2023-02-23 15:39:14 +0100 | [diff] [blame] | 42 | Caps::EcdsaP256.present() |
David Brown | b408b43 | 2021-10-27 15:55:39 -0600 | [diff] [blame] | 43 | } |
| 44 | |
David Brown | 4c9883b | 2019-03-05 12:13:33 -0700 | [diff] [blame] | 45 | /// Query for the number of images that have been configured into this |
| 46 | /// MCUboot build. |
| 47 | pub fn get_num_images() -> usize { |
| 48 | (unsafe { bootutil_get_num_images() }) as usize |
| 49 | } |
David Brown | dcea564 | 2021-05-26 16:12:33 -0600 | [diff] [blame] | 50 | |
| 51 | /// Query if this configuration performs some kind of upgrade by writing to flash. |
| 52 | pub fn modifies_flash() -> bool { |
| 53 | // All other configurations perform upgrades by writing to flash. |
David Brown | 812a84b | 2021-05-26 17:10:01 -0600 | [diff] [blame] | 54 | !(Self::RamLoad.present() || Self::DirectXip.present()) |
David Brown | dcea564 | 2021-05-26 16:12:33 -0600 | [diff] [blame] | 55 | } |
David Brown | 902d617 | 2017-05-05 09:37:41 -0600 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | extern "C" { |
| 59 | fn bootutil_get_caps() -> Caps; |
David Brown | 4c9883b | 2019-03-05 12:13:33 -0700 | [diff] [blame] | 60 | fn bootutil_get_num_images() -> u32; |
David Brown | 902d617 | 2017-05-05 09:37:41 -0600 | [diff] [blame] | 61 | } |