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https://github.com/CTCaer/switch-l4t-atf.git
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d35dee23b6
The previous code required that a certificate be signed with the ROT key before the platform's NV counter could be updated with the value in the certificate. This implies that the Non-Trusted NV counter was not being updated for Non-Trusted content certificates, as they cannot be signed with the ROT key in the TBBR CoT scheme. The code is reworked to only allow updating the platform's Trusted NV counter when a certificate protected by the Trusted NV counter is signed with the ROT key. Content certificates protected by the Non-Trusted NV counter are allowed to update the platform's Non-Trusted NV counter, assuming that the certificate value is higher than the platform's value. A new optional platform API has been introduced, named plat_set_nv_ctr2(). Platforms may choose to implement it and perform additional checks based on the authentication image descriptor before modifying the NV counters. A default weak implementation is available that just calls into plat_set_nv_ctr(). Fixes ARM-software/tf-issues#426 Change-Id: I4fc978fd28a3007bc0cef972ff1f69ad0413b79c Signed-off-by: dp-arm <dimitris.papastamos@arm.com> |
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| .. | ||
| diagrams | ||
| plat | ||
| spd | ||
| auth-framework.md | ||
| change-log.md | ||
| cpu-specific-build-macros.md | ||
| firmware-design.md | ||
| firmware-update.md | ||
| interrupt-framework-design.md | ||
| platform-migration-guide.md | ||
| porting-guide.md | ||
| psci-lib-integration-guide.md | ||
| psci-pd-tree.md | ||
| reset-design.md | ||
| rt-svc-writers-guide.md | ||
| trusted-board-boot.md | ||
| user-guide.md | ||