Make BL31's ns_entry_info a single-cpu area
ns_entry_info used to be a per-cpu array. This is a waste of space
because it is only accessed by the primary CPU on the cold boot path.
This patch reduces ns_entry_info to a single-cpu area.
Change-Id: I647c70c4e76069560f1aaad37a1d5910f56fba4c
diff --git a/plat/fvp/bl31_plat_setup.c b/plat/fvp/bl31_plat_setup.c
index 221b85a..6c59e84 100644
--- a/plat/fvp/bl31_plat_setup.c
+++ b/plat/fvp/bl31_plat_setup.c
@@ -70,13 +70,11 @@
#define BL31_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
/*******************************************************************************
- * This data structures holds information copied by BL31 from BL2 to pass
- * control to the non-trusted software images. A per-cpu entry was created to
- * use the same structure in the warm boot path but that's not the case right
- * now. Persisting with this approach for the time being. TODO: Can this be
- * moved out of device memory.
+ * This data structure holds information copied by BL31 from BL2 to pass
+ * control to the normal world software images.
+ * TODO: Can this be moved out of device memory.
******************************************************************************/
-el_change_info ns_entry_info[PLATFORM_CORE_COUNT]
+static el_change_info ns_entry_info
__attribute__ ((aligned(PLATFORM_CACHE_LINE_SIZE),
section("tzfw_coherent_mem")));
@@ -96,9 +94,9 @@
* always run in the non-secure state. In the final architecture there
* will be a series of images. This function will need enhancement then
******************************************************************************/
-el_change_info *bl31_get_next_image_info(unsigned long mpidr)
+el_change_info *bl31_get_next_image_info(void)
{
- return &ns_entry_info[platform_get_core_pos(mpidr)];
+ return &ns_entry_info;
}
/*******************************************************************************
@@ -108,11 +106,9 @@
* layout can be used while creating page tables.
******************************************************************************/
void bl31_early_platform_setup(meminfo *mem_layout,
- void *data,
- unsigned long mpidr)
+ void *data)
{
el_change_info *image_info = (el_change_info *) data;
- unsigned int lin_index = platform_get_core_pos(mpidr);
/* Setup the BL31 memory layout */
bl31_tzram_layout.total_base = mem_layout->total_base;
@@ -122,12 +118,12 @@
bl31_tzram_layout.attr = mem_layout->attr;
bl31_tzram_layout.next = 0;
- /* Save information about jumping into the NS world */
- ns_entry_info[lin_index].entrypoint = image_info->entrypoint;
- ns_entry_info[lin_index].spsr = image_info->spsr;
- ns_entry_info[lin_index].args = image_info->args;
- ns_entry_info[lin_index].security_state = image_info->security_state;
- ns_entry_info[lin_index].next = image_info->next;
+ /* Save information about jumping into the normal world */
+ ns_entry_info.entrypoint = image_info->entrypoint;
+ ns_entry_info.spsr = image_info->spsr;
+ ns_entry_info.args = image_info->args;
+ ns_entry_info.security_state = image_info->security_state;
+ ns_entry_info.next = image_info->next;
/* Initialize the platform config for future decision making */
platform_config_setup();