On 11/15/2013 03:15 AM, Hanjun Guo wrote:

Create GTDT table to convert arch timer for early boot.

Signed-off-by: Hanjun Guo hanjun.guo@linaro.org

platforms/foundation-v8.acpi/gtdt.asl | 35 ++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/platforms/foundation-v8.acpi/gtdt.asl b/platforms/foundation-v8.acpi/gtdt.asl index 18c821a..714d61c 100644 --- a/platforms/foundation-v8.acpi/gtdt.asl +++ b/platforms/foundation-v8.acpi/gtdt.asl @@ -1,5 +1,6 @@ /*

• Copyright (c) 2013, Al Stone al.stone@linaro.org

• •                 Hanjun Guo <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

• • 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
  
  

Acked-by: Al Stone al.stone@linaro.org