Mark BL31 initialization functions

Mark the initialization functions in BL31, such as context management,
EHF, RAS and PSCI as __init so that they can be reclaimed by the
platform when no longer needed

Change-Id: I7446aeee3dde8950b0f410cb766b7a2312c20130
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>

bl31/bl31_main.c

@@ -57,7 +57,7 @@ uintptr_t get_arm_std_svc_args(unsigned int svc_mask)
 /*******************************************************************************
  * Simple function to initialise all BL31 helper libraries.
  ******************************************************************************/
-void bl31_lib_init(void)
+void __init bl31_lib_init(void)
 {
 	cm_init();
 }
@@ -149,7 +149,7 @@ uint32_t bl31_get_next_image_type(void)
  * This function programs EL3 registers and performs other setup to enable entry
  * into the next image after BL31 at the next ERET.
  ******************************************************************************/
-void bl31_prepare_next_image_entry(void)
+void __init bl31_prepare_next_image_entry(void)
 {
 	entry_point_info_t *next_image_info;
 	uint32_t image_type;

bl31/ehf.c

@@ -451,7 +451,7 @@ static uint64_t ehf_el3_interrupt_handler(uint32_t id, uint32_t flags,
 /*
  * Initialize the EL3 exception handling.
  */
-void ehf_init(void)
+void __init ehf_init(void)
 {
 	unsigned int flags = 0;
 	int ret __unused;

common/runtime_svc.c

@@ -93,7 +93,7 @@ static int32_t validate_rt_svc_desc(const rt_svc_desc_t *desc)
  * The unique oen is used as an index into the 'rt_svc_descs_indices' array.
  * The index of the runtime service descriptor is stored at this index.
  ******************************************************************************/
-void runtime_svc_init(void)
+void __init runtime_svc_init(void)
 {
 	int rc = 0;
 	unsigned int index, start_idx, end_idx;

lib/el3_runtime/aarch64/context_mgmt.c

@@ -36,7 +36,7 @@
  * which will used for programming an entry into a lower EL. The same context
  * will used to save state upon exception entry from that EL.
  ******************************************************************************/
-void cm_init(void)
+void __init cm_init(void)
 {
 	/*
 	 * The context management library has only global data to intialize, but

lib/extensions/ras/ras_common.c

@@ -128,7 +128,7 @@ static int ras_interrupt_handler(uint32_t intr_raw, uint32_t flags,
 	return 0;
 }
 
-void ras_init(void)
+void __init ras_init(void)
 {
 #if ENABLE_ASSERTIONS
 	/* Check RAS interrupts are sorted */

lib/psci/psci_common.c

@@ -216,7 +216,7 @@ static void psci_set_req_local_pwr_state(unsigned int pwrlvl,
 /******************************************************************************
  * This function initializes the psci_req_local_pwr_states.
  *****************************************************************************/
-void psci_init_req_local_pwr_states(void)
+void __init psci_init_req_local_pwr_states(void)
 {
 	/* Initialize the requested state of all non CPU power domains as OFF */
 	unsigned int pwrlvl;

lib/psci/psci_setup.c

@@ -32,7 +32,7 @@ unsigned int psci_caps;
  * Function which initializes the 'psci_non_cpu_pd_nodes' or the
  * 'psci_cpu_pd_nodes' corresponding to the power level.
  ******************************************************************************/
-static void psci_init_pwr_domain_node(unsigned char node_idx,
+static void __init psci_init_pwr_domain_node(unsigned char node_idx,
 					unsigned int parent_idx,
 					unsigned char level)
 {
@@ -80,7 +80,7 @@ static void psci_init_pwr_domain_node(unsigned char node_idx,
  * mapping of the CPUs to indices via plat_core_pos_by_mpidr() and
  * plat_my_core_pos() APIs.
  *******************************************************************************/
-static void psci_update_pwrlvl_limits(void)
+static void __init psci_update_pwrlvl_limits(void)
 {
 	int j, cpu_idx;
 	unsigned int nodes_idx[PLAT_MAX_PWR_LVL] = {0};
@@ -107,7 +107,7 @@ static void psci_update_pwrlvl_limits(void)
  * informs the number of root power domains. The parent nodes of the root nodes
  * will point to an invalid entry(-1).
  ******************************************************************************/
-static void populate_power_domain_tree(const unsigned char *topology)
+static void __init populate_power_domain_tree(const unsigned char *topology)
 {
 	unsigned int i, j = 0U, num_nodes_at_lvl = 1U, num_nodes_at_next_lvl;
 	unsigned int node_index = 0U, num_children;
@@ -184,7 +184,7 @@ static void populate_power_domain_tree(const unsigned char *topology)
  * |   CPU 0   |   CPU 1   |   CPU 2   |   CPU 3  |
  * ------------------------------------------------
  ******************************************************************************/
-int psci_setup(const psci_lib_args_t *lib_args)
+int __init psci_setup(const psci_lib_args_t *lib_args)
 {
 	const unsigned char *topology_tree;