After EMIF DRAM is configured, but before it is used, calls are made on secure devices to reserve any configured memory region needed by the secure world and then to lock the EMIF firewall configuration. If any other firewall configuration needs to be applied, it must happen before the lock call.
Signed-off-by: Daniel Allred d-allred@ti.com --- arch/arm/cpu/armv7/omap-common/emif-common.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c index 2b79010..b26984e 100644 --- a/arch/arm/cpu/armv7/omap-common/emif-common.c +++ b/arch/arm/cpu/armv7/omap-common/emif-common.c @@ -14,6 +14,7 @@ #include <asm/arch/clock.h> #include <asm/arch/sys_proto.h> #include <asm/omap_common.h> +#include <asm/omap_sec_common.h> #include <asm/utils.h> #include <linux/compiler.h>
@@ -1477,6 +1478,20 @@ void sdram_init(void) debug("get_ram_size() successful"); }
+#if defined(CONFIG_TI_SECURE_DEVICE) + /* + * On HS devices, do static EMIF firewall configuration + * but only do it if not already running in SDRAM + */ + if (!in_sdram) + if (0 != secure_emif_reserve()) + hang(); + + /* On HS devices, ensure static EMIF firewall APIs are locked */ + if (0 != secure_emif_firewall_lock()) + hang(); +#endif + if (sdram_type == EMIF_SDRAM_TYPE_DDR3 && (!in_sdram && !warm_reset()) && (!is_dra7xx())) { if (emif1_enabled)