sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Documentation/Intel: Add minimal APCI and TempRamExit documentation

Browse Source 
Update the documentation to add the minimal ACPI support.  Also add
TempRamExit entry to the FSP features table.

TEST=None

Change-Id: I7a4576d58005a0b6834188dfeca97f1683d03cb0
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/13757
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Lee Leahy
2016-02-20 17:48:35 -08:00
committed by Leroy P Leahy
parent d08eb062df
commit bf08da27d5
3 changed files with 116 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
Documentation/Intel/SoC/soc.html
View File

@@ -32,6 +32,7 @@
<li>Set up the <a href="#MemoryMap">Memory Map"</a></li>
</ol>
</li>
<li><a href="#AcpiTables">ACPI Tables</a></li>
</ol>
@@ -556,8 +557,52 @@ Use the following steps to debug the call to TempRamInit:
<hr>
<h1><a name="AcpiTables">ACPI Tables</a></h1>
<p>
One of the payloads that needs ACPI tables is the EDK2 CorebootPayloadPkg.
</p>
<h2>FADT</h2>
<p>
The EDK2 module
CorebootModulePkg/CbSupportPei/<a target="_blank" href="https://github.com/tianocore/edk2/blob/master/CorebootModulePkg/CbSupportPei/CbSupportPei.c#l342">CbSupportPei.c</a>
requires that the FADT contains the following values:
</p>
<table border="1">
<tr bgcolor="#c0ffc0">
<td>EDK2 Field</td>
<td>Coreboot Field</td>
</tr>
<tr><td>Pm1aCntBlk</td><td>pm1a_cnt_blk</td></tr>
<tr><td>PmTmrBlk</td><td>pm_tmr_blk</td></tr>
<tr><td>ResetReg.Address</td><td>reset_reg.</td></tr>
<tr><td>ResetValue</td><td>reset_value</td></tr>
<tr><td>Pm1aEvtBlk</td><td>pm1a_evt_blk</td></tr>
<tr><td>Gpe0Blk</td><td>gpe0_blk</td></tr>
<tr><td>Gpe0BlkLen</td><td>gpe0_blk_len</td></tr>
</table>
<p>
The EDK2 data structure is defined in
MdeModulePkg/Include/IndustryStandard/<a target="_blank" href="https://github.com/tianocore/edk2/blob/master/MdePkg/Include/IndustryStandard/Acpi61.h#l111">Acpi61.h</a>
The coreboot data structure is defined in
src/arch/x86/include/arch/<a target="_blank" href="http://review.coreboot.org/gitweb?p=coreboot.git;a=blob;f=src/arch/x86/include/arch/acpi.h;hb=HEAD#l237">acpi.h</a>
</p>
<ol>
<li>
Select <a target="_blank" href="../Board/board.html#AcpiTables">HAVE_ACPI_TABLES</a>
in the board's Kconfig file
</li>
<li>Create a acpi.c module:
<ol type="A">
<li>Add the acpi_fill_in_fadt routine and initialize the values above</li>
</ol>
</li>
</ol>
<hr>
<p>Modified: 18 February 2016</p>
<p>Modified: 20 February 2016</p>
</body>
</html>