diff options
Diffstat (limited to 'src/security/intel/txt')
| -rw-r--r-- | src/security/intel/txt/Kconfig | 16 | ||||
| -rw-r--r-- | src/security/intel/txt/ramstage.c | 7 |
2 files changed, 21 insertions, 2 deletions
diff --git a/src/security/intel/txt/Kconfig b/src/security/intel/txt/Kconfig index f9e4bc4bf4..c1442c86ee 100644 --- a/src/security/intel/txt/Kconfig +++ b/src/security/intel/txt/Kconfig @@ -70,4 +70,20 @@ config INTEL_TXT_CBFS_SINIT_ACM string default "txt_sinit_acm.bin" +config INTEL_TXT_SINIT_SIZE + hex + default 0x20000 + help + This is the size that will be programmed in TXT_SINIT_SIZE. + This needs to be at least the size of the SINIT ACM. + This is platform dependent. For instance on CPX this has + to be the ACM size + 64K. + +config INTEL_TXT_HEAP_SIZE + hex + default 0xe0000 + help + This is the size that will be programmed in TXT_HEAP_SIZE. + This is platform dependent. + endif diff --git a/src/security/intel/txt/ramstage.c b/src/security/intel/txt/ramstage.c index 81d2dd1083..c33af893ac 100644 --- a/src/security/intel/txt/ramstage.c +++ b/src/security/intel/txt/ramstage.c @@ -372,6 +372,9 @@ static void lockdown_intel_txt(void *unused) return; } + _Static_assert(CONFIG_INTEL_TXT_HEAP_SIZE + CONFIG_INTEL_TXT_SINIT_SIZE + < CONFIG_INTEL_TXT_DPR_SIZE * MiB, "TXT Heap and Sinit must fit DPR"); + if (dpr.size < CONFIG_INTEL_TXT_DPR_SIZE) { printk(BIOS_ERR, "TEE-TXT: MCH DPR configured size is too small.\n"); return; @@ -396,7 +399,7 @@ static void lockdown_intel_txt(void *unused) * Document Number: 558294 * Chapter 5.5.6.3 Intel TXT Heap Memory Region */ - write64((void *)TXT_HEAP_SIZE, 0xE0000); + write64((void *)TXT_HEAP_SIZE, CONFIG_INTEL_TXT_HEAP_SIZE); write64((void *)TXT_HEAP_BASE, ALIGN_DOWN(tseg_base - read64((void *)TXT_HEAP_SIZE), 4096)); @@ -404,7 +407,7 @@ static void lockdown_intel_txt(void *unused) * Document Number: 558294 * Chapter 5.5.6.2 SINIT Memory Region */ - write64((void *)TXT_SINIT_SIZE, 0x20000); + write64((void *)TXT_SINIT_SIZE, CONFIG_INTEL_TXT_SINIT_SIZE); write64((void *)TXT_SINIT_BASE, ALIGN_DOWN(read64((void *)TXT_HEAP_BASE) - read64((void *)TXT_SINIT_SIZE), 4096)); |