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* [PATCH] mach-imx: hab: Unlock CAAM MID for OP-TEE
@ 2020-04-22 11:44 Albert Schwarzkopf
  2020-04-22 12:34 ` Rouven Czerwinski
  0 siblings, 1 reply; 4+ messages in thread
From: Albert Schwarzkopf @ 2020-04-22 11:44 UTC (permalink / raw)
  To: barebox

The current CSF config used by barebox does not allow a successful
bootup of OP-TEE within a closed HAB configuration. As specified
in section 2.1 of the application notes [1], OP-TEE requires that
the "UNLOCK MID" HAB command is present in the CSF file for
this case.

This patch adds the mentioned command if support for OP-TEE is
enabled in the configuration. It's based on the discussion
in [2].

[1] https://www.nxp.com/docs/en/application-note/AN12056.pdf
[2] https://github.com/OP-TEE/optee_os/issues/3609

Signed-off-by: Albert Schwarzkopf <a.schwarzkopf@phytec.de>
---
 arch/arm/mach-imx/include/mach/habv4-imx6-gencsf.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf.h b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf.h
index 581887960..0e6c7e2dd 100644
--- a/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf.h
+++ b/arch/arm/mach-imx/include/mach/habv4-imx6-gencsf.h
@@ -29,7 +29,11 @@ hab [Authenticate CSF]
 
 hab [Unlock]
 hab Engine = CAAM
+#if defined(CONFIG_BOOTM_OPTEE) || defined(CONFIG_PBL_OPTEE)
+hab Features = MID,RNG
+#else
 hab Features = RNG
+#endif
 
 hab [Install Key]
 /* verification key index in key store (0, 2...4) */
-- 
2.17.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-04-23  7:09 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-22 11:44 [PATCH] mach-imx: hab: Unlock CAAM MID for OP-TEE Albert Schwarzkopf
2020-04-22 12:34 ` Rouven Czerwinski
2020-04-23  7:08   ` Sascha Hauer
2020-04-23  7:09     ` Rouven Czerwinski

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