Tegra: smmu: remove context save sequence
SMMU and MC registers are saved as part of the System Suspend sequence.
The register list includes some NS world SMMU registers that need to be
saved by NS world software instead. All that remains as a result are
the MC registers.
This patch moves code to MC file as a result and renames all the
variables and defines to use the MC prefix instead of SMMU. The
Tegra186 and Tegra194 platform ports are updated to provide the MC
context register list to the parent driver. The memory required for
context save is reduced due to removal of the SMMU registers.
Change-Id: I83a05079039f52f9ce91c938ada6cd6dfd9c843f
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>
diff --git a/plat/nvidia/tegra/soc/t194/plat_trampoline.S b/plat/nvidia/tegra/soc/t194/plat_trampoline.S
index 540c201..819920f 100644
--- a/plat/nvidia/tegra/soc/t194/plat_trampoline.S
+++ b/plat/nvidia/tegra/soc/t194/plat_trampoline.S
@@ -12,7 +12,7 @@
#define TEGRA194_STATE_SYSTEM_SUSPEND 0x5C7
#define TEGRA194_STATE_SYSTEM_RESUME 0x600D
-#define TEGRA194_SMMU_CTX_SIZE 0x80D
+#define TEGRA194_MC_CTX_SIZE 0xFB
.align 4
.globl tegra194_cpu_reset_handler
@@ -69,8 +69,8 @@
*
* 0x0000: secure world's entrypoint
* 0x0008: BL31 size (RO + RW)
- * 0x0010: SMMU context start
- * 0x2490: SMMU context end
+ * 0x0010: MC context start
+ * 0x2490: MC context end
*/
.align 4
@@ -79,14 +79,13 @@
__tegra194_cpu_reset_handler_data:
.quad tegra_secure_entrypoint
.quad __BL31_END__ - BL31_BASE
-
.globl __tegra194_system_suspend_state
__tegra194_system_suspend_state:
.quad 0
.align 4
-__tegra194_smmu_context:
- .rept TEGRA194_SMMU_CTX_SIZE
+__tegra194_mc_context:
+ .rept TEGRA194_MC_CTX_SIZE
.quad 0
.endr
.size __tegra194_cpu_reset_handler_data, \
@@ -98,7 +97,7 @@
.globl tegra194_get_cpu_reset_handler_size
.globl tegra194_get_cpu_reset_handler_base
- .globl tegra194_get_smmu_ctx_offset
+ .globl tegra194_get_mc_ctx_offset
.globl tegra194_set_system_suspend_entry
/* return size of the CPU reset handler */
@@ -115,13 +114,13 @@
ret
endfunc tegra194_get_cpu_reset_handler_base
-/* return the size of the SMMU context */
-func tegra194_get_smmu_ctx_offset
- adr x0, __tegra194_smmu_context
+/* return the size of the MC context */
+func tegra194_get_mc_ctx_offset
+ adr x0, __tegra194_mc_context
adr x1, tegra194_cpu_reset_handler
sub x0, x0, x1
ret
-endfunc tegra194_get_smmu_ctx_offset
+endfunc tegra194_get_mc_ctx_offset
/* set system suspend state before SC7 entry */
func tegra194_set_system_suspend_entry