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ARM: DRA7: Add secure emif setup calls

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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>
This commit is contained in:
Daniel Allred 2016-09-02 00:40:22 -05:00 committed by Tom Rini
parent 6d132b2b09
commit 501f0ef304
1 changed files with 15 additions and 0 deletions
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15
arch/arm/cpu/armv7/omap-common/emif-common.c
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@ -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)