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* [PATCH v1 1/1] ShellPkg: Acpivew/GTDT: Print timer flags information.
@ 2023-07-12 11:44 yeoreum.yun
  2023-07-13  7:11 ` PierreGondois
  2023-07-13 14:24 ` [edk2-devel] " Pedro Falcato
  0 siblings, 2 replies; 4+ messages in thread
From: yeoreum.yun @ 2023-07-12 11:44 UTC (permalink / raw)
  To: devel; +Cc: yeoreum.yun, zhichao.gao, sami.mujawar, pierre.gondois

Currently, GTDT only prints the value of timer flags in hex.
This change prints the detail informaiton about Timer flags in GTDT.

before:
    Shell> acpiview -s GTDT
    ...
    Non-Secure EL1 timer FLAGS         : 0x2
    Virtual timer GSIV                 : 0x1B
    Virtual timer FLAGS                : 0x2
    ...

after:
    Shell> acpiview -s GTDT
    ...
    Non-Secure EL1 timer FLAGS         : 0x2
    Timer Interrupt Mode             : Level Trigger(0)
    Timer Interrupt Polarity         : Active Low(1)
    Always-on Capability             : 0
    Reserved                         : 0

    Virtual timer GSIV                 : 0x1B
    Virtual timer FLAGS                : 0x2

Signed-off-by: levi.yun <yeoreum.yun@arm.com>
---
The changes can be seen at https://github.com/LeviYeoReum/edk2/compare/master...LeviYeoReum:edk2:refs.geads/2711_gtdt_flags_v1
 ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c | 111 +++++++++++++++++---
 1 file changed, 98 insertions(+), 13 deletions(-)

diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
index e62927098a010a0e1dad8361dcfc6559d32dcebf..0001d4231e88c03fa1e296539e9fbc76eb5dd7e1 100644
--- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
+++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Gtdt/GtdtParser.c
@@ -84,33 +84,118 @@ ValidateGtFrameNumber (
   }

 }



+/**

+  This function prints Triggermode information in timer flags.

+

+  @param [in] Format     Print format.

+  @param [in] Ptr        Pointer to the start of the field data.

+**/

+STATIC

+VOID

+EFIAPI

+PrintTimerInterruptMode (

+  IN CONST CHAR16  *Format OPTIONAL,

+  IN UINT8         *Ptr

+  )

+{

+  UINT8  TriggerMode;

+

+  TriggerMode = (*(UINT8 *)Ptr);

+

+  Print (

+    L"%s(%d)",

+    ((TriggerMode) ? L"Edge Trigger" : L"Level Trigger"),

+    TriggerMode

+    );

+}

+

+/**

+  This function prints Polarity information in timer flags.

+

+  @param [in] Format     Print format.

+  @param [in] Ptr        Pointer to the start of the field data.

+**/

+STATIC

+VOID

+EFIAPI

+PrintTimerInterruptPolarity (

+  IN CONST CHAR16  *Format OPTIONAL,

+  IN UINT8         *Ptr

+  )

+{

+  UINT8  Polarity;

+

+  Polarity = (*(UINT8 *)Ptr);

+

+  Print (

+    L"%s(%d)",

+    ((Polarity) ? L"Active Low" : L"Active High"),

+    Polarity

+    );

+}

+

+/**

+  An ACPI_PARSER array describing the Timer Flags Field in GTDT Table.

+**/

+STATIC CONST ACPI_PARSER  TimerFlagsParser[] = {

+  { L"Timer Interrupt Mode",     1,  0, NULL,  PrintTimerInterruptMode,     NULL, NULL, NULL },

+  { L"Timer Interrupt Polarity", 1,  1, NULL,  PrintTimerInterruptPolarity, NULL, NULL, NULL },

+  { L"Always-on Capability",     1,  2, L"%d", NULL,                        NULL, NULL, NULL },

+  { L"Reserved",                 29, 3, L"%d", NULL,                        NULL, NULL, NULL },

+};

+

+/**

+  This function parses the Timer Flags.

+

+  @param [in]   Format  Print format.

+  @param [in]   Ptr     Pointer to the start of the Timer flags.

+ **/

+STATIC

+VOID

+EFIAPI

+DumpTimerFlags (

+  IN CONST CHAR16  *Format OPTIONAL,

+  IN UINT8         *Ptr

+  )

+{

+  DumpUint32 (L"0x%x\n", Ptr);

+  ParseAcpiBitFields (

+    TRUE,

+    2,

+    NULL,

+    Ptr,

+    4,

+    PARSER_PARAMS (TimerFlagsParser)

+    );

+}

+

 /**

   An ACPI_PARSER array describing the ACPI GTDT Table.

 **/

 STATIC CONST ACPI_PARSER  GtdtParser[] = {

   PARSE_ACPI_HEADER (&AcpiHdrInfo),

-  { L"CntControlBase Physical Address",8,      36,  L"0x%lx", NULL, NULL,

+  { L"CntControlBase Physical Address",8,      36,  L"0x%lx", NULL,           NULL,

     NULL,                             NULL },

-  { L"Reserved",                      4,      44,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Secure EL1 timer GSIV",         4,      48,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Secure EL1 timer FLAGS",        4,      52,  L"0x%x",  NULL, NULL,NULL,  NULL },

+  { L"Reserved",                      4,      44,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Secure EL1 timer GSIV",         4,      48,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Secure EL1 timer FLAGS",        4,      52,  NULL,     DumpTimerFlags, NULL,NULL,  NULL },



-  { L"Non-Secure EL1 timer GSIV",     4,      56,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Non-Secure EL1 timer FLAGS",    4,      60,  L"0x%x",  NULL, NULL,NULL,  NULL },

+  { L"Non-Secure EL1 timer GSIV",     4,      56,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Non-Secure EL1 timer FLAGS",    4,      60,  NULL,     DumpTimerFlags, NULL,NULL,  NULL },



-  { L"Virtual timer GSIV",            4,      64,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Virtual timer FLAGS",           4,      68,  L"0x%x",  NULL, NULL,NULL,  NULL },

+  { L"Virtual timer GSIV",            4,      64,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Virtual timer FLAGS",           4,      68,  L"0x%x",  DumpTimerFlags, NULL,NULL,  NULL },



-  { L"Non-Secure EL2 timer GSIV",     4,      72,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Non-Secure EL2 timer FLAGS",    4,      76,  L"0x%x",  NULL, NULL,NULL,  NULL },

+  { L"Non-Secure EL2 timer GSIV",     4,      72,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Non-Secure EL2 timer FLAGS",    4,      76,  L"0x%x",  DumpTimerFlags, NULL,NULL,  NULL },



-  { L"CntReadBase Physical address",  8,      80,  L"0x%lx", NULL, NULL,NULL,  NULL },

+  { L"CntReadBase Physical address",  8,      80,  L"0x%lx", NULL,           NULL,NULL,  NULL },

   { L"Platform Timer Count",          4,      88,  L"%d",    NULL,

     (VOID **)&GtdtPlatformTimerCount, NULL,   NULL },

   { L"Platform Timer Offset",         4,      92,  L"0x%x",  NULL,

     (VOID **)&GtdtPlatformTimerOffset,NULL,   NULL },

-  { L"Virtual EL2 Timer GSIV",        4,      96,  L"0x%x",  NULL, NULL,NULL,  NULL },

-  { L"Virtual EL2 Timer Flags",       4,      100, L"0x%x",  NULL, NULL,NULL,  NULL }

+  { L"Virtual EL2 Timer GSIV",        4,      96,  L"0x%x",  NULL,           NULL,NULL,  NULL },

+  { L"Virtual EL2 Timer Flags",       4,      100, L"0x%x",  NULL,           NULL,NULL,  NULL }

 };



 /**

--
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2023-07-12 11:44 [PATCH v1 1/1] ShellPkg: Acpivew/GTDT: Print timer flags information yeoreum.yun
2023-07-13  7:11 ` PierreGondois
2023-07-13 14:24 ` [edk2-devel] " Pedro Falcato
2023-07-14  9:04   ` levi.yun

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