* [U-Boot] [PATCH] arm: mediatek: add missing arch timer configuration for MT7629
@ 2019-07-10 9:35 Weijie Gao
2019-07-18 23:59 ` Tom Rini
0 siblings, 1 reply; 2+ messages in thread
From: Weijie Gao @ 2019-07-10 9:35 UTC (permalink / raw)
To: u-boot
This patch sets CNTVOFF of ARM CP15 timer to zero to make sure the virtual
counter is fully usable for linux kernel.
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
arch/arm/mach-mediatek/mt7629/lowlevel_init.S | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/mach-mediatek/mt7629/lowlevel_init.S b/arch/arm/mach-mediatek/mt7629/lowlevel_init.S
index 3375796b79..0a0672cbea 100644
--- a/arch/arm/mach-mediatek/mt7629/lowlevel_init.S
+++ b/arch/arm/mach-mediatek/mt7629/lowlevel_init.S
@@ -4,6 +4,7 @@
*/
#include <linux/linkage.h>
+#include <asm/proc-armv/ptrace.h>
#define WAIT_CODE_SRAM_BASE 0x0010ff00
@@ -27,6 +28,18 @@ ENTRY(lowlevel_init)
movt r0, #0x131
mcr p15, 0, r0, c14, c0, 0
+ cps #MON_MODE
+ mrc p15, 0, r1, c1, c1, 0 @ Get Secure Config
+ orr r0, r1, #1
+ mcr p15, 0, r0, c1, c1, 0 @ Set Non Secure bit
+ isb
+ mov r0, #0
+ mcrr p15, 4, r0, r0, c14 @ CNTVOFF = 0
+ isb
+ mcr p15, 0, r1, c1, c1, 0 @ Set Secure bit
+ isb
+ cps #SVC_MODE
+
/* enable SMP bit */
mrc p15, 0, r0, c1, c0, 1
orr r0, r0, #0x40
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [U-Boot] [PATCH] arm: mediatek: add missing arch timer configuration for MT7629
2019-07-10 9:35 [U-Boot] [PATCH] arm: mediatek: add missing arch timer configuration for MT7629 Weijie Gao
@ 2019-07-18 23:59 ` Tom Rini
0 siblings, 0 replies; 2+ messages in thread
From: Tom Rini @ 2019-07-18 23:59 UTC (permalink / raw)
To: u-boot
On Wed, Jul 10, 2019 at 05:35:42PM +0800, Weijie Gao wrote:
> This patch sets CNTVOFF of ARM CP15 timer to zero to make sure the virtual
> counter is fully usable for linux kernel.
>
> Cc: Albert Aribaud <albert.u.boot@aribaud.net>
> Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Applied to u-boot/master, thanks!
--
Tom
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2019-07-10 9:35 [U-Boot] [PATCH] arm: mediatek: add missing arch timer configuration for MT7629 Weijie Gao
2019-07-18 23:59 ` Tom Rini
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