* [PATCH] Platform/FVP-AArch64: switch to the SBSA watchdog
@ 2018-12-18 16:46 Ard Biesheuvel
2018-12-19 16:25 ` Leif Lindholm
0 siblings, 1 reply; 4+ messages in thread
From: Ard Biesheuvel @ 2018-12-18 16:46 UTC (permalink / raw)
To: edk2-devel
On the FVP Foundation model, the SP805 watchdog appears to be 'wired'
incorrectly, resulting in a watchdog counter that decrements at the
APB clock rate of 24 MHz instead of the usual 32 kHz. Since the
timer start value is only 32-bits wide, this makes the watchdog
unusable in UEFI, since the default timeout set by the DXE core is
5 minutes, which is not representable in 32-bit at this clock rate.
So switch to the SBSA watchdog instead, which is wired up to the
generic timer, and ticks at the correct rate.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc | 7 ++++---
Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf | 2 +-
Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h | 3 +++
Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf | 3 +++
Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c | 7 ++++++-
5 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
index 7db1c675c3d9..0941edeaf53c 100644
--- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
+++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
@@ -133,9 +133,10 @@
gArmPlatformTokenSpaceGuid.PcdPL031RtcBase|0x1C170000
## SBSA Watchdog Count
-!ifndef DISABLE_SBSA_WATCHDOG
gArmPlatformTokenSpaceGuid.PcdWatchdogCount|1
-!endif
+ gArmTokenSpaceGuid.PcdGenericWatchdogControlBase|0x2a440000
+ gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase|0x2a450000
+ gArmTokenSpaceGuid.PcdGenericWatchdogEl2IntrNum|59
!ifdef EDK2_ENABLE_PL111
## PL111 Versatile Express Motherboard controller
@@ -265,7 +266,7 @@
!ifdef EDK2_ENABLE_PL111
ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
!endif
- ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
+ ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
# SMBIOS Support
diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
index 239029d05cf1..c3e573e1bb4f 100644
--- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
+++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
@@ -116,7 +116,7 @@ FvNameGuid = 87940482-fc81-41c3-87e6-399cf85ac8a0
!ifdef EDK2_ENABLE_PL111
INF ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
!endif
- INF ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
+ INF ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
#
# Semi-hosting filesystem
diff --git a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
index d856b6daa1d7..e267912ef5f5 100644
--- a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
+++ b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
@@ -76,4 +76,7 @@
#define PL111_CLCD_MOTHERBOARD_VIDEO_MODE_OSC_ID 1
#define PL111_CLCD_CORE_TILE_VIDEO_MODE_OSC_ID 1
+#define SBSA_WATCHDOG_BASE 0x2a440000
+#define SBSA_WATCHDOG_SIZE (2 * SIZE_64KB)
+
#endif
diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
index 53898c5e957e..511a2ac99b75 100644
--- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
+++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
@@ -60,5 +60,8 @@
gArmPlatformTokenSpaceGuid.PcdArmMaliDpBase
gArmPlatformTokenSpaceGuid.PcdArmMaliDpMemoryRegionLength
+ gArmTokenSpaceGuid.PcdGenericWatchdogControlBase
+ gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase
+
[Ppis]
gArmMpCoreInfoPpiGuid
diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
index c8eefa0cf28b..eb8f6a48cd02 100644
--- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
+++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
@@ -23,7 +23,7 @@
#define DP_BASE_DESCRIPTOR ((FixedPcdGet64 (PcdArmMaliDpBase) != 0) ? 1 : 0)
// Number of Virtual Memory Map Descriptors
-#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 + DP_BASE_DESCRIPTOR)
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (10 + DP_BASE_DESCRIPTOR)
// DDR attributes
#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
@@ -175,6 +175,11 @@ ArmPlatformGetVirtualMemoryMap (
VirtualMemoryTable[Index].Attributes = CacheAttributes;
}
+ VirtualMemoryTable[++Index].PhysicalBase = SBSA_WATCHDOG_BASE;
+ VirtualMemoryTable[Index].VirtualBase = SBSA_WATCHDOG_BASE;
+ VirtualMemoryTable[Index].Length = SBSA_WATCHDOG_SIZE;
+ VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
+
// End of Table
VirtualMemoryTable[++Index].PhysicalBase = 0;
VirtualMemoryTable[Index].VirtualBase = 0;
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] Platform/FVP-AArch64: switch to the SBSA watchdog
2018-12-18 16:46 [PATCH] Platform/FVP-AArch64: switch to the SBSA watchdog Ard Biesheuvel
@ 2018-12-19 16:25 ` Leif Lindholm
2018-12-20 10:02 ` Thomas Abraham
0 siblings, 1 reply; 4+ messages in thread
From: Leif Lindholm @ 2018-12-19 16:25 UTC (permalink / raw)
To: Ard Biesheuvel; +Cc: edk2-devel, sami.mujawar, Thomas Panakamattam Abraham
On Tue, Dec 18, 2018 at 05:46:21PM +0100, Ard Biesheuvel wrote:
> On the FVP Foundation model, the SP805 watchdog appears to be 'wired'
> incorrectly, resulting in a watchdog counter that decrements at the
> APB clock rate of 24 MHz instead of the usual 32 kHz. Since the
> timer start value is only 32-bits wide, this makes the watchdog
> unusable in UEFI, since the default timeout set by the DXE core is
> 5 minutes, which is not representable in 32-bit at this clock rate.
>
> So switch to the SBSA watchdog instead, which is wired up to the
> generic timer, and ticks at the correct rate.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>From my point of view:
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
But I'd like a nod from Sami or Thomas (added to cc) as well.
> ---
> Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc | 7 ++++---
> Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf | 2 +-
> Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h | 3 +++
> Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf | 3 +++
> Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c | 7 ++++++-
> 5 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> index 7db1c675c3d9..0941edeaf53c 100644
> --- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> +++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> @@ -133,9 +133,10 @@
> gArmPlatformTokenSpaceGuid.PcdPL031RtcBase|0x1C170000
>
> ## SBSA Watchdog Count
> -!ifndef DISABLE_SBSA_WATCHDOG
> gArmPlatformTokenSpaceGuid.PcdWatchdogCount|1
> -!endif
> + gArmTokenSpaceGuid.PcdGenericWatchdogControlBase|0x2a440000
> + gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase|0x2a450000
> + gArmTokenSpaceGuid.PcdGenericWatchdogEl2IntrNum|59
>
> !ifdef EDK2_ENABLE_PL111
> ## PL111 Versatile Express Motherboard controller
> @@ -265,7 +266,7 @@
> !ifdef EDK2_ENABLE_PL111
> ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
> !endif
> - ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
> + ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
>
> # SMBIOS Support
>
> diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> index 239029d05cf1..c3e573e1bb4f 100644
> --- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> +++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> @@ -116,7 +116,7 @@ FvNameGuid = 87940482-fc81-41c3-87e6-399cf85ac8a0
> !ifdef EDK2_ENABLE_PL111
> INF ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
> !endif
> - INF ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
> + INF ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
>
> #
> # Semi-hosting filesystem
> diff --git a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> index d856b6daa1d7..e267912ef5f5 100644
> --- a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> +++ b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> @@ -76,4 +76,7 @@
> #define PL111_CLCD_MOTHERBOARD_VIDEO_MODE_OSC_ID 1
> #define PL111_CLCD_CORE_TILE_VIDEO_MODE_OSC_ID 1
>
> +#define SBSA_WATCHDOG_BASE 0x2a440000
> +#define SBSA_WATCHDOG_SIZE (2 * SIZE_64KB)
> +
> #endif
> diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> index 53898c5e957e..511a2ac99b75 100644
> --- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> +++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> @@ -60,5 +60,8 @@
> gArmPlatformTokenSpaceGuid.PcdArmMaliDpBase
> gArmPlatformTokenSpaceGuid.PcdArmMaliDpMemoryRegionLength
>
> + gArmTokenSpaceGuid.PcdGenericWatchdogControlBase
> + gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase
> +
> [Ppis]
> gArmMpCoreInfoPpiGuid
> diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> index c8eefa0cf28b..eb8f6a48cd02 100644
> --- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> +++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> @@ -23,7 +23,7 @@
> #define DP_BASE_DESCRIPTOR ((FixedPcdGet64 (PcdArmMaliDpBase) != 0) ? 1 : 0)
>
> // Number of Virtual Memory Map Descriptors
> -#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 + DP_BASE_DESCRIPTOR)
> +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (10 + DP_BASE_DESCRIPTOR)
>
> // DDR attributes
> #define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> @@ -175,6 +175,11 @@ ArmPlatformGetVirtualMemoryMap (
> VirtualMemoryTable[Index].Attributes = CacheAttributes;
> }
>
> + VirtualMemoryTable[++Index].PhysicalBase = SBSA_WATCHDOG_BASE;
> + VirtualMemoryTable[Index].VirtualBase = SBSA_WATCHDOG_BASE;
> + VirtualMemoryTable[Index].Length = SBSA_WATCHDOG_SIZE;
> + VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
> +
> // End of Table
> VirtualMemoryTable[++Index].PhysicalBase = 0;
> VirtualMemoryTable[Index].VirtualBase = 0;
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Platform/FVP-AArch64: switch to the SBSA watchdog
2018-12-19 16:25 ` Leif Lindholm
@ 2018-12-20 10:02 ` Thomas Abraham
2018-12-20 11:09 ` Ard Biesheuvel
0 siblings, 1 reply; 4+ messages in thread
From: Thomas Abraham @ 2018-12-20 10:02 UTC (permalink / raw)
To: Leif Lindholm; +Cc: Ard Biesheuvel, edk2-devel
On Wed, Dec 19, 2018 at 10:04 PM Leif Lindholm <leif.lindholm@linaro.org> wrote:
>
> On Tue, Dec 18, 2018 at 05:46:21PM +0100, Ard Biesheuvel wrote:
> > On the FVP Foundation model, the SP805 watchdog appears to be 'wired'
> > incorrectly, resulting in a watchdog counter that decrements at the
> > APB clock rate of 24 MHz instead of the usual 32 kHz. Since the
> > timer start value is only 32-bits wide, this makes the watchdog
> > unusable in UEFI, since the default timeout set by the DXE core is
> > 5 minutes, which is not representable in 32-bit at this clock rate.
> >
> > So switch to the SBSA watchdog instead, which is wired up to the
> > generic timer, and ticks at the correct rate.
> >
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>
> From my point of view:
> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
>
> But I'd like a nod from Sami or Thomas (added to cc) as well.
I have not been able test this patch yet but the changes looks fine.
- Thomas.
>
> > ---
> > Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc | 7 ++++---
> > Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf | 2 +-
> > Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h | 3 +++
> > Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf | 3 +++
> > Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c | 7 ++++++-
> > 5 files changed, 17 insertions(+), 5 deletions(-)
> >
> > diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> > index 7db1c675c3d9..0941edeaf53c 100644
> > --- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> > +++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
> > @@ -133,9 +133,10 @@
> > gArmPlatformTokenSpaceGuid.PcdPL031RtcBase|0x1C170000
> >
> > ## SBSA Watchdog Count
> > -!ifndef DISABLE_SBSA_WATCHDOG
> > gArmPlatformTokenSpaceGuid.PcdWatchdogCount|1
> > -!endif
> > + gArmTokenSpaceGuid.PcdGenericWatchdogControlBase|0x2a440000
> > + gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase|0x2a450000
> > + gArmTokenSpaceGuid.PcdGenericWatchdogEl2IntrNum|59
> >
> > !ifdef EDK2_ENABLE_PL111
> > ## PL111 Versatile Express Motherboard controller
> > @@ -265,7 +266,7 @@
> > !ifdef EDK2_ENABLE_PL111
> > ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
> > !endif
> > - ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
> > + ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
> >
> > # SMBIOS Support
> >
> > diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> > index 239029d05cf1..c3e573e1bb4f 100644
> > --- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> > +++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
> > @@ -116,7 +116,7 @@ FvNameGuid = 87940482-fc81-41c3-87e6-399cf85ac8a0
> > !ifdef EDK2_ENABLE_PL111
> > INF ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.inf
> > !endif
> > - INF ArmPlatformPkg/Drivers/SP805WatchdogDxe/SP805WatchdogDxe.inf
> > + INF ArmPkg/Drivers/GenericWatchdogDxe/GenericWatchdogDxe.inf
> >
> > #
> > # Semi-hosting filesystem
> > diff --git a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> > index d856b6daa1d7..e267912ef5f5 100644
> > --- a/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> > +++ b/Platform/ARM/VExpressPkg/Include/Platform/RTSM/ArmPlatform.h
> > @@ -76,4 +76,7 @@
> > #define PL111_CLCD_MOTHERBOARD_VIDEO_MODE_OSC_ID 1
> > #define PL111_CLCD_CORE_TILE_VIDEO_MODE_OSC_ID 1
> >
> > +#define SBSA_WATCHDOG_BASE 0x2a440000
> > +#define SBSA_WATCHDOG_SIZE (2 * SIZE_64KB)
> > +
> > #endif
> > diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> > index 53898c5e957e..511a2ac99b75 100644
> > --- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> > +++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/ArmVExpressLib.inf
> > @@ -60,5 +60,8 @@
> > gArmPlatformTokenSpaceGuid.PcdArmMaliDpBase
> > gArmPlatformTokenSpaceGuid.PcdArmMaliDpMemoryRegionLength
> >
> > + gArmTokenSpaceGuid.PcdGenericWatchdogControlBase
> > + gArmTokenSpaceGuid.PcdGenericWatchdogRefreshBase
> > +
> > [Ppis]
> > gArmMpCoreInfoPpiGuid
> > diff --git a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > index c8eefa0cf28b..eb8f6a48cd02 100644
> > --- a/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > +++ b/Platform/ARM/VExpressPkg/Library/ArmVExpressLibRTSM/RTSMMem.c
> > @@ -23,7 +23,7 @@
> > #define DP_BASE_DESCRIPTOR ((FixedPcdGet64 (PcdArmMaliDpBase) != 0) ? 1 : 0)
> >
> > // Number of Virtual Memory Map Descriptors
> > -#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (9 + DP_BASE_DESCRIPTOR)
> > +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (10 + DP_BASE_DESCRIPTOR)
> >
> > // DDR attributes
> > #define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> > @@ -175,6 +175,11 @@ ArmPlatformGetVirtualMemoryMap (
> > VirtualMemoryTable[Index].Attributes = CacheAttributes;
> > }
> >
> > + VirtualMemoryTable[++Index].PhysicalBase = SBSA_WATCHDOG_BASE;
> > + VirtualMemoryTable[Index].VirtualBase = SBSA_WATCHDOG_BASE;
> > + VirtualMemoryTable[Index].Length = SBSA_WATCHDOG_SIZE;
> > + VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
> > +
> > // End of Table
> > VirtualMemoryTable[++Index].PhysicalBase = 0;
> > VirtualMemoryTable[Index].VirtualBase = 0;
> > --
> > 2.17.1
> >
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] Platform/FVP-AArch64: switch to the SBSA watchdog
2018-12-20 10:02 ` Thomas Abraham
@ 2018-12-20 11:09 ` Ard Biesheuvel
0 siblings, 0 replies; 4+ messages in thread
From: Ard Biesheuvel @ 2018-12-20 11:09 UTC (permalink / raw)
To: Thomas Abraham; +Cc: Leif Lindholm, edk2-devel@lists.01.org
On Thu, 20 Dec 2018 at 11:03, Thomas Abraham <thomas.abraham@arm.com> wrote:
>
> On Wed, Dec 19, 2018 at 10:04 PM Leif Lindholm <leif.lindholm@linaro.org> wrote:
> >
> > On Tue, Dec 18, 2018 at 05:46:21PM +0100, Ard Biesheuvel wrote:
> > > On the FVP Foundation model, the SP805 watchdog appears to be 'wired'
> > > incorrectly, resulting in a watchdog counter that decrements at the
> > > APB clock rate of 24 MHz instead of the usual 32 kHz. Since the
> > > timer start value is only 32-bits wide, this makes the watchdog
> > > unusable in UEFI, since the default timeout set by the DXE core is
> > > 5 minutes, which is not representable in 32-bit at this clock rate.
> > >
> > > So switch to the SBSA watchdog instead, which is wired up to the
> > > generic timer, and ticks at the correct rate.
> > >
> > > Contributed-under: TianoCore Contribution Agreement 1.1
> > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> >
> > From my point of view:
> > Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> >
> > But I'd like a nod from Sami or Thomas (added to cc) as well.
>
> I have not been able test this patch yet but the changes looks fine.
>
> - Thomas.
>
Thanks all
Pushed as dc6b5ef8a6c2..88e5de1a2346
^ permalink raw reply [flat|nested] 4+ messages in thread
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