From: Lucas Stach <l.stach@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH v2 05/10] ARM: don't try to install secure monitor when entered in HYP mode
Date: Sat, 24 Mar 2018 00:14:17 +0100 [thread overview]
Message-ID: <20180323231422.21137-5-l.stach@pengutronix.de> (raw)
In-Reply-To: <20180323231422.21137-1-l.stach@pengutronix.de>
When Barebox has been entered in HYP mode, the CPU is already switched
to the non-secure world and it's not possible for Barebox to install
it's own secure monitor.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
arch/arm/cpu/sm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/cpu/sm.c b/arch/arm/cpu/sm.c
index 5808dfd92bdc..71bb394c8540 100644
--- a/arch/arm/cpu/sm.c
+++ b/arch/arm/cpu/sm.c
@@ -184,6 +184,9 @@ int armv7_secure_monitor_install(void)
return -EINVAL;
}
+ if (__boot_cpu_mode == HYP_MODE)
+ return 0;
+
mmuon = get_cr() & CR_M;
vbar = get_vbar();
--
2.16.1
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next prev parent reply other threads:[~2018-03-23 23:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-23 23:14 [PATCH v2 01/10] ARM: import opcode helpers from Linux kernel Lucas Stach
2018-03-23 23:14 ` [PATCH v2 02/10] ARM: safely switch from HYP to SVC mode if required Lucas Stach
2018-03-24 10:06 ` Sam Ravnborg
2018-03-23 23:14 ` [PATCH v2 03/10] ARM: allow secure monitor code to be built without PSCI Lucas Stach
2018-03-23 23:14 ` [PATCH v2 04/10] ARM: add file for HYP mode related setup Lucas Stach
2018-03-24 10:10 ` Sam Ravnborg
2018-03-23 23:14 ` Lucas Stach [this message]
2018-03-23 23:14 ` [PATCH v2 06/10] ARM: default to starting kernel in HYP mode when entered in HYP Lucas Stach
2018-03-23 23:14 ` [PATCH v2 07/10] ARM: install HYP vectors at PBL and Barebox entry Lucas Stach
2018-03-23 23:14 ` [PATCH v2 08/10] ARM: rpi: add revision IDs for Pi 3 Model B and Pi Zero Lucas Stach
2018-03-24 10:13 ` Sam Ravnborg
2018-03-23 23:14 ` [PATCH v2 09/10] ARM: rpi: add raspberry pi 3 support Lucas Stach
2018-03-23 23:14 ` [PATCH v2 10/10] ARM: rpi: autosize malloc area Lucas Stach
2018-03-26 10:06 ` [PATCH v2 01/10] ARM: import opcode helpers from Linux kernel Roland Hieber
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