[PATCH 6/7] Platform/RaspberryPi: Power up sd, and tweak GPIOs

["Jeremy Linton" <jeremy.linton@arm.com>]

It seems we should be powering up the sd cards, and possibly
the clocks as well to assure they are setup properly before
we attempt to access the controller.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
---
 Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
index 28f57438c5..8829740938 100644
--- a/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
+++ b/Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c
@@ -552,6 +552,15 @@ ApplyVariables (
       GpioPinFuncSet (37, GPIO_FSEL_ALT3);
       GpioPinFuncSet (38, GPIO_FSEL_ALT3);
       GpioPinFuncSet (39, GPIO_FSEL_ALT3);
+
+      /*
+       * power and clock everything by default
+       */
+      Status = mFwProtocol->SetPowerState (0, 1, 1); //SD on
+      Status = mFwProtocol->SetGpioConfig (RPI_EXP_GPIO_SD_VOLT, 
+                                           RPI_EXP_GPIO_DIR_OUT, 1); //3.3v
+      Status = mFwProtocol->SetClockState (RPI_MBOX_CLOCK_RATE_EMMC2, 1);
+      Status = mFwProtocol->SetClockState (RPI_MBOX_CLOCK_RATE_EMMC, 1);
     }
   } else {
     DEBUG ((DEBUG_ERROR, "Model Family %d not supported...\n", mModelFamily));
-- 
2.13.7