OSA Open failed

[mipsan]

I'm testing standalone libSboot for u-boot, on Exynos ref. board. While u-boot sealing, OSA Open command is stuck and sealing failed. To seal u-boot, I use u-boot CLI, "sboot seal" instead of SPL boot.

console log is as follow;

TPM: command: 0 c1, 0 0 0 24, 0 0 0 b (size=36) [TPM] 0 4 40 0 0 0 85 a1 16 37 7b 88 c3 5 22 db d4 b1 ea 15 91 20: fe f8 a3 72 e5 waiting for status... ...got it; out_recv: reading response... TPM: response: 0 c4, 0 0 0 a, 0 0 0 12 (size=10)

TPM: command 0xb returned 0x12

Where this problem happens is ${UBOOT}lib/tlcl/oiaposap.c, TSS_OSAPopen().

Could you let me know what I should check?