Tegra: sip: add VPR resize enabled check
The Memory Controller provides a control register to check
if the video memory can be resized. The previous bootloader
might have locked this feature, which will be reflected by
this register.
This patch reads the control register before processing
a video memory resize request. An error code, -ENOTSUP,
is returned if the feature is locked.
Change-Id: Ia1d67f7a94aa15c6b18ff5c9b9b952e179596ae3
Signed-off-by: Anthony Zhou <anzhou@nvidia.com>
diff --git a/plat/nvidia/tegra/include/t132/tegra_def.h b/plat/nvidia/tegra/include/t132/tegra_def.h
index 8e6c1fd..afdcd36 100644
--- a/plat/nvidia/tegra/include/t132/tegra_def.h
+++ b/plat/nvidia/tegra/include/t132/tegra_def.h
@@ -104,6 +104,8 @@
#define MC_VIDEO_PROTECT_BASE_HI U(0x978)
#define MC_VIDEO_PROTECT_BASE_LO U(0x648)
#define MC_VIDEO_PROTECT_SIZE_MB U(0x64c)
+#define MC_VIDEO_PROTECT_REG_CTRL U(0x650)
+#define MC_VIDEO_PROTECT_WRITE_ACCESS_ENABLED U(3)
/*******************************************************************************
* Tegra TZRAM constants