Tegra186: save/restore BL31 context to/from TZDRAM
This patch adds support to save the BL31 state to the TZDRAM
before entering system suspend. The TZRAM loses state during
system suspend and so we need to copy the entire BL31 code to
TZDRAM before entering the state.
In order to restore the state on exiting system suspend, a new
CPU reset handler is implemented which gets copied to TZDRAM
during boot. TO keep things simple we use this same reset handler
for booting secondary CPUs too.
Change-Id: I770f799c255d22279b5cdb9b4d587d3a4c54fad7
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/include/drivers/memctrl_v2.h b/plat/nvidia/tegra/include/drivers/memctrl_v2.h
index fe7f7a0..04c0e8d 100644
--- a/plat/nvidia/tegra/include/drivers/memctrl_v2.h
+++ b/plat/nvidia/tegra/include/drivers/memctrl_v2.h
@@ -31,7 +31,6 @@
#ifndef __MEMCTRLV2_H__
#define __MEMCTRLV2_H__
-#include <mmio.h>
#include <tegra_def.h>
/*******************************************************************************
@@ -297,6 +296,8 @@
#define MC_TXN_OVERRIDE_CGID_TAG_ADR 3
#define MC_TXN_OVERRIDE_CGID_TAG_MASK 3
+#ifndef __ASSEMBLY__
+
/*******************************************************************************
* Structure to hold the transaction override settings to use to override
* client inputs
@@ -347,6 +348,8 @@
.override_enable = OVERRIDE_ ## access \
}
+#endif /* __ASSMEBLY__ */
+
/*******************************************************************************
* TZDRAM carveout configuration registers
******************************************************************************/
@@ -545,6 +548,10 @@
#define MC_SMMU_CLIENT_CONFIG5_APEDMAW_UNORDERED (0 << 0)
#define MC_SMMU_CLIENT_CONFIG5_APEDMAW_MASK (1 << 0)
+#ifndef __ASSEMBLY__
+
+#include <mmio.h>
+
static inline uint32_t tegra_mc_read_32(uint32_t off)
{
return mmio_read_32(TEGRA_MC_BASE + off);
@@ -601,5 +608,6 @@
MC_TXN_OVERRIDE_CONFIG_AXID_OVERRIDE_CGID | \
MC_TXN_OVERRIDE_CONFIG_AXID_OVERRIDE_SO_DEV_CGID_SO_DEV_CLIENT); \
}
+#endif /* __ASSMEBLY__ */
#endif /* __MEMCTRLV2_H__ */