Re: [Linaro-acpi] [PATCH] RTSM model: Create GTDT table for arch timer

On Mon, Nov 18, 2013 at 09:01:24PM +0800, Hanjun Guo wrote:

On 15 November 2013 18:24, Hanjun Guo <[1]hanjun.guo@linaro.org> wrote:

 Create GTDT table to convert arch timer for early boot.
 Signed-off-by: Hanjun Guo <[2]hanjun.guo@linaro.org>
 ---
  platforms/rtsm_ve-aemv8a.acpi/gtdt.asl |   37
 +++++++++++++++++++++-----------
  1 file changed, 24 insertions(+), 13 deletions(-)
 diff --git a/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl
 b/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl
 index 068ad4a..26eac38 100644
 --- a/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl
 +++ b/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl
 @@ -1,6 +1,7 @@
  /*
   * Copyright (c) 2013, Al Stone <[3]al.stone@linaro.org>
 - *
 + *                     Hanjun Guo <[4]hanjun.guo@linaro.org>
 + *
   * [GTDT] Generic Timer Description Table
   * Format: [ByteLength]  FieldName : HexFieldValue
   *
 @@ -21,22 +22,32 @@
  [0004]              Flags (decoded below) : 00000001
                             Memory Present : 1
 -[0004]               Secure PL1 Interrupt : 00000000
 -[0004]         SPL1 Flags (decoded below) : 00000000
 -                             Trigger Mode : 0
 +/* In Foundation model's dts file, the last cell of interrupts

Oh, sorry, typo, should be RTSM model. will in update next version.

I did it while adding it to the tree.

Graeme

 + * is 0xff01, it means its cpu mask is FF, and trigger type
 + * and flag is 1 = low-to-high edge triggered.
 + *
 + * so in ACPI the Trigger Mode is 1 - Edge triggered, and
 + * Polarity is 0 - Active high as ACPI spec describled.
 + *
 + * using direct mapping for hwirqs, it means that we using
 + * ID [16, 31] for PPI, not [0, 15] used in FDT.
 + */
 +[0004]               Secure PL1 Interrupt : 0000001d
 +[0004]         SPL1 Flags (decoded below) : 00000001
 +                             Trigger Mode : 1
                                   Polarity : 0
 -[0004]           Non-Secure PL1 Interrupt : 00000000
 -[0004]        NSPL1 Flags (decoded below) : 00000000
 -                             Trigger Mode : 0
 +[0004]           Non-Secure PL1 Interrupt : 0000001e
 +[0004]        NSPL1 Flags (decoded below) : 00000001
 +                             Trigger Mode : 1
                                   Polarity : 0
 -[0004]            Virtual Timer Interrupt : 00000000
 -[0004]           VT Flags (decoded below) : 00000000
 -                             Trigger Mode : 0
 +[0004]            Virtual Timer Interrupt : 0000001b
 +[0004]           VT Flags (decoded below) : 00000001
 +                             Trigger Mode : 1
                                   Polarity : 0
 -[0004]           Non-Secure PL2 Interrupt : 00000000
 -[0004]        NSPL2 Flags (decoded below) : 00000000
 -                             Trigger Mode : 0
 +[0004]           Non-Secure PL2 Interrupt : 0000001a
 +[0004]        NSPL2 Flags (decoded below) : 00000001
 +                             Trigger Mode : 1
                                   Polarity : 0
 --
 1.7.9.5

References

1. mailto:hanjun.guo@linaro.org
2. mailto:hanjun.guo@linaro.org
3. mailto:al.stone@linaro.org
4. mailto:hanjun.guo@linaro.org

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