[coreboot] New patch to review for coreboot: a9a1fc5 Properly identify ACPI C3 states in _CST table.

Stefan Reinauer (stefan.reinauer@coreboot.org) gerrit at coreboot.org
Tue Jul 24 00:12:15 CEST 2012


Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1297

-gerrit

commit a9a1fc5987493575c759af510647836138052a26
Author: Duncan Laurie <dlaurie at chromium.org>
Date:   Wed Jun 20 14:38:53 2012 -0700

    Properly identify ACPI C3 states in _CST table.
    
    Dump and disassemble ACPI tables and look in _CST.
    
    In the last entry the state was getting set to 0:
    
    Package (0x04)
    {
      ResourceTemplate ()
      {
        Register (FFixedHW,
                  0x01,               // Bit Width
                  0x02,               // Bit Offset
                  0x0000000000000030, // Address
                  0x01,               // Access Size
                  )
      },
      0x00000000,                     // State
      0x0000005A,                     // Latency
      0x000000C8                      // Power
    }
    
    Now it is properly identifed as state 3:
    
    Package (0x04)
    {
      ResourceTemplate ()
      {
        Register (FFixedHW,
                  0x01,               // Bit Width
                  0x02,               // Bit Offset
                  0x0000000000000030, // Address
                  0x01,               // Access Size
                  )
      },
      0x00000003,                     // State
      0x0000005A,                     // Latency
      0x000000C8                      // Power
    }
    
    Change-Id: Ie0a68606c5a43ac5fb5ba7bb9a3fef933ad67b64
    Signed-off-by: Duncan Laurie <dlaurie at google.com>
---
 src/cpu/intel/model_206ax/acpi.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/cpu/intel/model_206ax/acpi.c b/src/cpu/intel/model_206ax/acpi.c
index dea23e7..5d3f3a0 100644
--- a/src/cpu/intel/model_206ax/acpi.c
+++ b/src/cpu/intel/model_206ax/acpi.c
@@ -79,7 +79,7 @@ static int generate_cstate_entries(acpi_cstate_t *cstates,
 		length += acpigen_write_CST_package_entry(&cstates[c2]);
 	}
 	if (c3 > 0) {
-		cstates[c2].ctype = 2;
+		cstates[c3].ctype = 3;
 		length += acpigen_write_CST_package_entry(&cstates[c3]);
 	}
 




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