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| author | Philipp Deppenwiese <zaolin.daisuki@gmail.com> | 2018-11-20 14:22:15 +0100 |
|---|---|---|
| committer | Philipp Deppenwiese <zaolin.daisuki@gmail.com> | 2020-07-31 16:02:54 +0000 |
| commit | 5f9f77672d096a013094f3cad63cb138167dbf1b (patch) | |
| tree | e3dd64faa6844b1e577651eff519a67fc1add1d8 /src/security/memory | |
| parent | a9eec2cc2f941d6e4035620e60c1a0ae93d5167e (diff) | |
| download | coreboot-5f9f77672d096a013094f3cad63cb138167dbf1b.tar.xz | |
security/intel/txt: Add Intel TXT support
Add TXT ramstage driver:
* Show startup errors
* Check for TXT reset
* Check for Secrets-in-memory
* Add assembly for GETSEC instruction
* Check platform state if GETSEC instruction is supported
* Configure TXT memory regions
* Lock TXT
* Protect TSEG using DMA protected regions
* Place SINIT ACM
* Print information about ACMs
Extend the `security_clear_dram_request()` function:
* Clear all DRAM if secrets are in memory
Add a config so that the code gets build-tested. Since BIOS and SINIT
ACM binaries are not available, use the STM binary as a placeholder.
Tested on OCP Wedge100s and Facebook Watson
* Able to enter a Measured Launch Environment using SINIT ACM and TBOOT
* Secrets in Memory bit is set on ungraceful shutdown
* Memory is cleared after ungraceful shutdown
Change-Id: Iaf4be7f016cc12d3971e1e1fe171e6665e44c284
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Diffstat (limited to 'src/security/memory')
| -rw-r--r-- | src/security/memory/memory.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/security/memory/memory.c b/src/security/memory/memory.c index 664e7c17a3..ff4cd1581b 100644 --- a/src/security/memory/memory.c +++ b/src/security/memory/memory.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <types.h> +#include <stdint.h> +#include <security/intel/txt/txt.h> #include "memory.h" /** @@ -13,6 +14,9 @@ bool security_clear_dram_request(void) if (CONFIG(SECURITY_CLEAR_DRAM_ON_REGULAR_BOOT)) return true; + if (CONFIG(INTEL_TXT) && intel_txt_memory_has_secrets()) + return true; + /* TODO: Add TEE environments here */ return false; |