plat/arm: Move fconf population after the enablement of MMU
In BL2, fw_config's population happened before the cache gets
enabled.
Hence to boost the performance, moved fw_config's population
after cache gets enabled (i.e. after MMU gets enabled).
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I2e75cabd76b1cb7a660f6b72f409ab40d2877284
diff --git a/plat/arm/common/arm_bl2_setup.c b/plat/arm/common/arm_bl2_setup.c
index 80f3b32..60d8f6e 100644
--- a/plat/arm/common/arm_bl2_setup.c
+++ b/plat/arm/common/arm_bl2_setup.c
@@ -26,6 +26,9 @@
/* Data structure which holds the extents of the trusted SRAM for BL2 */
static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);
+/* Base address of fw_config received from BL1 */
+static uintptr_t fw_config_base;
+
/*
* Check that BL2_BASE is above ARM_FW_CONFIG_LIMIT. This reserved page is
* for `meminfo_t` data structure and fw_configs passed from BL1.
@@ -57,21 +60,13 @@
void arm_bl2_early_platform_setup(uintptr_t fw_config,
struct meminfo *mem_layout)
{
- const struct dyn_cfg_dtb_info_t *tb_fw_config_info;
/* Initialize the console to provide early debug support */
arm_console_boot_init();
/* Setup the BL2 memory layout */
bl2_tzram_layout = *mem_layout;
- /* Fill the properties struct with the info from the config dtb */
- fconf_populate("FW_CONFIG", fw_config);
-
- /* TB_FW_CONFIG was also loaded by BL1 */
- tb_fw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, TB_FW_CONFIG_ID);
- assert(tb_fw_config_info != NULL);
-
- fconf_populate("TB_FW", tb_fw_config_info->config_addr);
+ fw_config_base = fw_config;
/* Initialise the IO layer and register platform IO devices */
plat_arm_io_setup();
@@ -135,6 +130,7 @@
#if ARM_CRYPTOCELL_INTEG
ARM_MAP_BL_COHERENT_RAM,
#endif
+ ARM_MAP_BL_CONFIG_REGION,
{0}
};
@@ -151,7 +147,18 @@
void bl2_plat_arch_setup(void)
{
+ const struct dyn_cfg_dtb_info_t *tb_fw_config_info;
+
arm_bl2_plat_arch_setup();
+
+ /* Fill the properties struct with the info from the config dtb */
+ fconf_populate("FW_CONFIG", fw_config_base);
+
+ /* TB_FW_CONFIG was also loaded by BL1 */
+ tb_fw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, TB_FW_CONFIG_ID);
+ assert(tb_fw_config_info != NULL);
+
+ fconf_populate("TB_FW", tb_fw_config_info->config_addr);
}
int arm_bl2_handle_post_image_load(unsigned int image_id)