From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH v2 03/12] ARM: i.MX8MQ: Configure cntfrq only in EL3
Date: Thu, 19 Jul 2018 18:03:48 -0700 [thread overview]
Message-ID: <20180720010357.22822-4-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20180720010357.22822-1-andrew.smirnov@gmail.com>
We only can (and should only need to) configure cntfrq when running in
EL3 and executing this code in any other exception level will result
in exception.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
arch/arm/mach-imx/imx8mq.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-imx/imx8mq.c b/arch/arm/mach-imx/imx8mq.c
index f3246e437..dbcf4fa59 100644
--- a/arch/arm/mach-imx/imx8mq.c
+++ b/arch/arm/mach-imx/imx8mq.c
@@ -62,12 +62,14 @@ static void imx8mq_silicon_revision(void)
static int imx8mq_init_syscnt_frequency(void)
{
- void __iomem *syscnt = IOMEM(MX8MQ_SYSCNT_CTRL_BASE_ADDR);
- /*
- * Update with accurate clock frequency
- */
- set_cntfrq(syscnt_get_cntfrq(syscnt));
- syscnt_enable(syscnt);
+ if (current_el() == 3) {
+ void __iomem *syscnt = IOMEM(MX8MQ_SYSCNT_CTRL_BASE_ADDR);
+ /*
+ * Update with accurate clock frequency
+ */
+ set_cntfrq(syscnt_get_cntfrq(syscnt));
+ syscnt_enable(syscnt);
+ }
return 0;
}
--
2.17.1
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next prev parent reply other threads:[~2018-07-20 1:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-20 1:03 [PATCH v2 00/12] ARM: i.MX8MQ and EVK support, part II Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 01/12] ARM: nxp-imx8mq-evk: Update DDR initialization code Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 02/12] ARM: Add code to support SMCCC on AArch64 Andrey Smirnov
2018-07-20 1:03 ` Andrey Smirnov [this message]
2018-07-20 1:03 ` [PATCH v2 04/12] ARM: i.MX8MQ: Add code to load BL31 ATF blob Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 05/12] ARM: i.MX: fimware: Add pre-built " Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 06/12] ARM: i.MX: Move i.MX header definitions to mach-imx Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 07/12] ARM: i.MX: xload-esdhc: Make use of <mach/imx-header.h> Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 08/12] ARM: i.MX: xload-esdhc: Allow placing image to align its etnry point Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 09/12] ARM: nxp-imx8mq-evk: Add code to load ATF BL31 blob Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 10/12] ARM: i.MX8MQ: Query and display ATF fimware hash if availible Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 11/12] ARM: nxp-imx8mq-evk: Add bootflow comments Andrey Smirnov
2018-07-20 1:03 ` [PATCH v2 12/12] firmware: Fix copy-paste comment mistake Andrey Smirnov
2018-08-08 6:34 ` [PATCH v2 00/12] ARM: i.MX8MQ and EVK support, part II Sascha Hauer
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