[PATCH v2 1/1] Silicon/Qemu/Sbsa: Enable Always-On capability for PE timers

[PATCH v2 1/1] Silicon/Qemu/Sbsa: Enable Always-On capability for PE timers

[Marcin Juszkiewicz]

From: Shashi Mallela <shashi.mallela@linaro.org>

Setting the Always-on Capability bit in GTDT table for
system PE timers in sbsa platform.This is also required
for ACS sbsa level 3 test compliancy.

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Graeme Gregory <graeme@nuviainc.com>
Signed-off-by: Shashi Mallela <shashi.mallela@linaro.org>

[fixed compilation error]

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
---
 Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc b/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
index 14733a37183d..ba145aff6413 100644
--- a/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
+++ b/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
@@ -28,8 +28,11 @@
 #define GTDT_TIMER_LEVEL_TRIGGERED  0
 #define GTDT_TIMER_ACTIVE_LOW       EFI_ACPI_6_3_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY
 #define GTDT_TIMER_ACTIVE_HIGH      0
+#define GTDT_TIMER_ALWAYS_ON        EFI_ACPI_6_3_GTDT_TIMER_FLAG_ALWAYS_ON_CAPABILITY
 
-#define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
+#define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | \
+                                     GTDT_TIMER_LEVEL_TRIGGERED | \
+                                     GTDT_TIMER_ALWAYS_ON)
 
 #define SBSA_PLATFORM_WATCHDOG_COUNT    1
 #define SBSA_PLATFORM_TIMER_COUNT       (SBSA_PLATFORM_WATCHDOG_COUNT)
-- 
2.32.0

Re: [PATCH v2 1/1] Silicon/Qemu/Sbsa: Enable Always-On capability for PE timers

[Leif Lindholm]

On Mon, Nov 01, 2021 at 18:54:57 +0100, Marcin Juszkiewicz wrote:
> From: Shashi Mallela <shashi.mallela@linaro.org>
> 
> Setting the Always-on Capability bit in GTDT table for
> system PE timers in sbsa platform.This is also required
> for ACS sbsa level 3 test compliancy.
> 
> Cc: Leif Lindholm <leif@nuviainc.com>
> Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
> Cc: Graeme Gregory <graeme@nuviainc.com>
> Signed-off-by: Shashi Mallela <shashi.mallela@linaro.org>
> 
> [fixed compilation error]
> 
> Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
> Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>

Acked-by: Leif Lindholm <leif@nuviainc.com>
Pushed as f5fe24c4efea - thanks!

> ---
>  Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc b/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
> index 14733a37183d..ba145aff6413 100644
> --- a/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
> +++ b/Silicon/Qemu/SbsaQemu/AcpiTables/Gtdt.aslc
> @@ -28,8 +28,11 @@
>  #define GTDT_TIMER_LEVEL_TRIGGERED  0
>  #define GTDT_TIMER_ACTIVE_LOW       EFI_ACPI_6_3_GTDT_TIMER_FLAG_TIMER_INTERRUPT_POLARITY
>  #define GTDT_TIMER_ACTIVE_HIGH      0
> +#define GTDT_TIMER_ALWAYS_ON        EFI_ACPI_6_3_GTDT_TIMER_FLAG_ALWAYS_ON_CAPABILITY
>  
> -#define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | GTDT_TIMER_LEVEL_TRIGGERED)
> +#define GTDT_GTIMER_FLAGS           (GTDT_TIMER_ACTIVE_LOW | \
> +                                     GTDT_TIMER_LEVEL_TRIGGERED | \
> +                                     GTDT_TIMER_ALWAYS_ON)
>  
>  #define SBSA_PLATFORM_WATCHDOG_COUNT    1
>  #define SBSA_PLATFORM_TIMER_COUNT       (SBSA_PLATFORM_WATCHDOG_COUNT)
> -- 
> 2.32.0
>