Tegra186: system resume from TZSRAM memory
TZSRAM loses power during System suspend, so the entire contents
are copied to TZDRAM before Sysem Suspend entry. The warmboot code
verifies and restores the contents to TZSRAM during System Resume.
This patch removes the code that sets up CPU vector to point to
TZSRAM during System Resume as a result. The trampoline code can
also be completely removed as a result.
Change-Id: I2830eb1db16efef3dfd96c4e3afc41a307588ca1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t186/plat_memctrl.c b/plat/nvidia/tegra/soc/t186/plat_memctrl.c
index 09377bb..7ff7e77 100644
--- a/plat/nvidia/tegra/soc/t186/plat_memctrl.c
+++ b/plat/nvidia/tegra/soc/t186/plat_memctrl.c
@@ -10,8 +10,8 @@
#include <mce.h>
#include <memctrl_v2.h>
-#include <tegra_mc_def.h>
#include <tegra186_private.h>
+#include <tegra_mc_def.h>
#include <tegra_platform.h>
#include <tegra_private.h>
@@ -711,13 +711,6 @@
void plat_memctrl_tzdram_setup(uint64_t phys_base, uint64_t size_in_bytes)
{
uint32_t val;
- uint64_t src_base_tzdram;
- const plat_params_from_bl2_t *params_from_bl2 = bl31_get_plat_params();
- uint64_t src_len_in_bytes = BL31_END - BL31_START;
-
- /* base address of BL3-1 source in TZDRAM */
- src_base_tzdram = params_from_bl2->tzdram_base +
- tegra186_get_cpu_reset_handler_size();
/*
* Setup the Memory controller to allow only secure accesses to
@@ -747,15 +740,6 @@
mmio_write_32(TEGRA_SCRATCH_BASE + SCRATCH_TZDRAM_ADDR_HI, val);
/*
- * save tzdram_addr_lo and ATF-size, this would be used in SC7-RF to
- * generate SHA256.
- */
- mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV68_LO,
- (uint32_t)src_base_tzdram);
- mmio_write_32(TEGRA_SCRATCH_BASE + SECURE_SCRATCH_RSV0_HI,
- (uint32_t)src_len_in_bytes);
-
- /*
* MCE propagates the security configuration values across the
* CCPLEX.
*/