Update USB init code to do a softreset.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10208 6f19259b-4bc3-4df7-8a09-765794883524
2010-03-05 07:10:52 +00:00
parent 0c1a4aa69a
commit 51866b5465
2 changed files with 7 additions and 0 deletions
--- a/Omap35xxPkg/PciEmulation/PciEmulation.c
+++ b/Omap35xxPkg/PciEmulation/PciEmulation.c
@@ -62,6 +62,12 @@ ConfigureUSBHost (
  EFI_STATUS Status;
  UINT8      Data = 0;

+  // Do a softreset 
+  MmioOr32 (UHH_SYSCONFIG, UHH_SYSCONFIG_SOFTRESET);
+  // When the bit clears reset is complete
+  while ((MmioRead32 (UHH_SYSCONFIG) & UHH_SYSCONFIG_SOFTRESET) == UHH_SYSCONFIG_SOFTRESET);
+
+
  // Take USB host out of force-standby mode
  MmioWrite32 (UHH_SYSCONFIG, UHH_SYSCONFIG_MIDLEMODE_NO_STANDBY
                             | UHH_SYSCONFIG_CLOCKACTIVITY_ON