diff options
| author | Olivier Martin <olivier.martin@arm.com> | 2013-09-23 09:40:27 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-09-23 09:40:27 +0000 |
| commit | d8c4bb9afa0bd87e4d790f5e8974939bcaea1353 (patch) | |
| tree | c758589119a170609a0a1845280ee8724d0436e8 /ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe | |
| parent | 64669acab3cae4541e07939f314f152a11b8dcc9 (diff) | |
| download | edk2-platforms-d8c4bb9afa0bd87e4d790f5e8974939bcaea1353.tar.xz | |
ArmPlatformPkg/LcdGraphicsOutputDxe: Call LcdShutdown() on ExitBootServices() if PcdGopDisableOnExitBootServices
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14702 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe')
5 files changed, 17 insertions, 7 deletions
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcd.c b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcd.c index c9baa98224..9186912dfc 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcd.c +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcd.c @@ -120,6 +120,6 @@ LcdShutdown ( VOID
)
{
- // Nothing to do in terms of hardware.
- // We could switch off the monitor display if required
+ // Disable the controller
+ MmioWrite32 (HDLCD_REG_COMMAND, HDLCD_DISABLE);
}
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcdGraphicsOutputDxe.inf b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcdGraphicsOutputDxe.inf index ac61bf75eb..8de4752b72 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcdGraphicsOutputDxe.inf +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcdGraphicsOutputDxe.inf @@ -56,5 +56,8 @@ [FixedPcd]
gArmPlatformTokenSpaceGuid.PcdArmHdLcdBase
+[FeaturePcd]
+ gArmPlatformTokenSpaceGuid.PcdGopDisableOnExitBootServices
+
[Depex]
gEfiCpuArchProtocolGuid
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c index 34a56b3d8d..f4165d0003 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c @@ -225,7 +225,13 @@ LcdGraphicsExitBootServicesEvent ( IN VOID *Context
)
{
- //TODO: Implement me
+ // By default, this PCD is FALSE. But if a platform starts a predefined OS that
+ // does not use a framebuffer then we might want to disable the display controller
+ // to avoid to display corrupted information on the screen.
+ if (FeaturePcdGet (PcdGopDisableOnExitBootServices)) {
+ // Turn-off the Display controller
+ LcdShutdown ();
+ }
}
/***************************************
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c index a955acb4dc..ad841cd8dc 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c @@ -99,8 +99,6 @@ LcdShutdown ( VOID
)
{
- // Nothing to do in terms of hardware.
- // We could switch off the monitor display if required
-
- //TODO: ImplementMe
+ // Disable the controller
+ MmioAnd32 (PL111_REG_LCD_CONTROL, ~PL111_CTRL_LCD_EN);
}
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111LcdGraphicsOutputDxe.inf b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111LcdGraphicsOutputDxe.inf index 5387e53c4a..27f00617e4 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111LcdGraphicsOutputDxe.inf +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111LcdGraphicsOutputDxe.inf @@ -52,5 +52,8 @@ [FixedPcd]
gArmPlatformTokenSpaceGuid.PcdPL111LcdBase
+[FeaturePcd]
+ gArmPlatformTokenSpaceGuid.PcdGopDisableOnExitBootServices
+
[Depex]
gEfiCpuArchProtocolGuid
|