From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 03/11] ARM: i.MX8MQ: Configure cntfrq only in EL3
Date: Fri, 29 Jun 2018 20:48:52 -0700 [thread overview]
Message-ID: <20180630034900.3324-4-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20180630034900.3324-1-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:[~2018-06-30 3:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-30 3:48 [PATCH 00/11] ARM: i.MX8MQ and EVK support, part II Andrey Smirnov
2018-06-30 3:48 ` [PATCH 01/11] ARM: nxp-imx8mq-evk: Update DDR initialization code Andrey Smirnov
2018-06-30 3:48 ` [PATCH 02/11] ARM: Add code to support SMCCC on AArch64 Andrey Smirnov
2018-07-02 6:26 ` Sascha Hauer
2018-07-03 17:44 ` Andrey Smirnov
2018-06-30 3:48 ` Andrey Smirnov [this message]
2018-06-30 3:48 ` [PATCH 04/11] ARM: i.MX8MQ: Add a macro to load BL31 ATF blob Andrey Smirnov
2018-07-02 6:25 ` Sascha Hauer
2018-07-03 17:58 ` Andrey Smirnov
2018-07-19 23:01 ` Andrey Smirnov
2018-06-30 3:48 ` [PATCH 05/11] ARM: i.MX: xload-esdhc: Move image base to MX8MQ_ATF_BL33_BASE_ADDR Andrey Smirnov
2018-06-30 3:48 ` [PATCH 06/11] ARM: i.MX: xload-esdhc: Allow patching first word of the image Andrey Smirnov
2018-07-02 6:20 ` Sascha Hauer
2018-07-03 18:12 ` Andrey Smirnov
2018-06-30 3:48 ` [PATCH 07/11] ARM: i.MX: fimware: Add pre-built BL31 ATF blob Andrey Smirnov
2018-07-02 5:23 ` Sascha Hauer
2018-07-03 17:59 ` Andrey Smirnov
2018-06-30 3:48 ` [PATCH 08/11] ARM: nxp-imx8mq-evk: Add code to load ATF BL31 blob Andrey Smirnov
2018-06-30 3:48 ` [PATCH 09/11] ARM: i.MX8MQ: Query and display ATF fimware hash if availible Andrey Smirnov
2018-06-30 3:48 ` [PATCH 10/11] ARM: nxp-imx8mq-evk: Add bootflow comments Andrey Smirnov
2018-07-02 5:48 ` Sascha Hauer
2018-07-03 18:00 ` Andrey Smirnov
2018-06-30 3:49 ` [PATCH 11/11] firmware: Fix copy-paste comment mistake Andrey Smirnov
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