Merge pull request #1137 from soby-mathew/sm/arm_plat_en_gicv3_save

Enable GICv3 save for ARM platforms

4 files changed, 50 insertions, 2 deletions

diff --git a/include/plat/arm/board/common/board_arm_def.h b/include/plat/arm/board/common/board_arm_def.h
index 93828c9d..7a4594cc 100644
--- a/include/plat/arm/board/common/board_arm_def.h
+++ b/include/plat/arm/board/common/board_arm_def.h
@@ -53,7 +53,7 @@
  * enable dynamic memory mapping.
  */
 #if defined(IMAGE_BL31) || defined(IMAGE_BL32)
-# define PLAT_ARM_MMAP_ENTRIES		6
+# define PLAT_ARM_MMAP_ENTRIES		7
 # define MAX_XLAT_TABLES		5
 #else
 # define PLAT_ARM_MMAP_ENTRIES		11
diff --git a/include/plat/arm/common/arm_common.ld.S b/include/plat/arm/common/arm_common.ld.S
new file mode 100644
index 00000000..478b08c2
--- /dev/null
+++ b/include/plat/arm/common/arm_common.ld.S
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef __ARM_COMMON_LD_S__
+#define __ARM_COMMON_LD_S__
+
+MEMORY {
+    EL3_SEC_DRAM (rw): ORIGIN = ARM_EL3_TZC_DRAM1_BASE, LENGTH = ARM_EL3_TZC_DRAM1_SIZE
+}
+
+SECTIONS
+{
+	. = ARM_EL3_TZC_DRAM1_BASE;
+	ASSERT(. == ALIGN(4096),
+	"ARM_EL3_TZC_DRAM_BASE address is not aligned on a page boundary.")
+	el3_tzc_dram (NOLOAD) : ALIGN(4096) {
+	__EL3_SEC_DRAM_START__ = .;
+	*(arm_el3_tzc_dram)
+	__EL3_SEC_DRAM_UNALIGNED_END__ = .;
+
+	. = NEXT(4096);
+	__EL3_SEC_DRAM_END__ = .;
+	} >EL3_SEC_DRAM
+}
+
+#endif /* __ARM_COMMON_LD_S__ */
diff --git a/include/plat/arm/common/arm_def.h b/include/plat/arm/common/arm_def.h
index c84fabd9..6cab91fe 100644
--- a/include/plat/arm/common/arm_def.h
+++ b/include/plat/arm/common/arm_def.h
@@ -77,11 +77,23 @@
 #define ARM_SCP_TZC_DRAM1_END		(ARM_SCP_TZC_DRAM1_BASE +	\
 					 ARM_SCP_TZC_DRAM1_SIZE - 1)
 
+/*
+ * Define a 2MB region within the TZC secured DRAM for use by EL3 runtime
+ * firmware. This region is meant to be NOLOAD and will not be zero
+ * initialized. Data sections with the attribute `arm_el3_tzc_dram` will be
+ * placed here.
+ */
+#define ARM_EL3_TZC_DRAM1_BASE		(ARM_SCP_TZC_DRAM1_BASE - ARM_EL3_TZC_DRAM1_SIZE)
+#define ARM_EL3_TZC_DRAM1_SIZE		ULL(0x00200000) /* 2 MB */
+#define ARM_EL3_TZC_DRAM1_END		(ARM_EL3_TZC_DRAM1_BASE +	\
+					ARM_EL3_TZC_DRAM1_SIZE - 1)
+
 #define ARM_AP_TZC_DRAM1_BASE		(ARM_DRAM1_BASE +		\
 					 ARM_DRAM1_SIZE -		\
 					 ARM_TZC_DRAM1_SIZE)
 #define ARM_AP_TZC_DRAM1_SIZE		(ARM_TZC_DRAM1_SIZE -		\
-					 ARM_SCP_TZC_DRAM1_SIZE)
+					 (ARM_SCP_TZC_DRAM1_SIZE +	\
+					 ARM_EL3_TZC_DRAM1_SIZE))
 #define ARM_AP_TZC_DRAM1_END		(ARM_AP_TZC_DRAM1_BASE +	\
 					 ARM_AP_TZC_DRAM1_SIZE - 1)
 
@@ -224,6 +236,11 @@
 						MT_MEMORY | MT_RW | MT_SECURE)
 #endif
 
+#define ARM_MAP_EL3_TZC_DRAM		MAP_REGION_FLAT(			\
+						ARM_EL3_TZC_DRAM1_BASE,	\
+						ARM_EL3_TZC_DRAM1_SIZE,	\
+						MT_MEMORY | MT_RW | MT_SECURE)
+
 /*
  * The number of regions like RO(code), coherent and data required by
  * different BL stages which need to be mapped in the MMU.
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index 4e589c0c..33d951c2 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -120,6 +120,7 @@ void arm_configure_sys_timer(void);
 int arm_validate_power_state(unsigned int power_state,
 			    psci_power_state_t *req_state);
 int arm_validate_ns_entrypoint(uintptr_t entrypoint);
+void arm_system_pwr_domain_save(void);
 void arm_system_pwr_domain_resume(void);
 void arm_program_trusted_mailbox(uintptr_t address);
 int arm_psci_read_mem_protect(int *val);
@@ -183,6 +184,8 @@ void plat_arm_gic_cpuif_disable(void);
 void plat_arm_gic_redistif_on(void);
 void plat_arm_gic_redistif_off(void);
 void plat_arm_gic_pcpu_init(void);
+void plat_arm_gic_save(void);
+void plat_arm_gic_resume(void);
 void plat_arm_security_setup(void);
 void plat_arm_pwrc_setup(void);
 void plat_arm_interconnect_init(void);