[U-Boot] [PATCH v2 2/2] warp7 : run sec_init for CAAM RNG

[Bryan O'Donoghue]

This patch adds a sec_init call into board_init. Doing so in conjunction
with the patch "drivers/crypto/fsl: assign job-rings to non-TrustZone"
enables use of the CAAM in Linux when OPTEE/TrustZone is active.

u-boot will initialise the RNG and assign ownership of the job-ring
registers to a non-TrustZone context. Linux then simply has to detect or be
told to skip RNG initialisation.

This change is safe both for the OPTEE/TrustZone boot path and the regular
non-OPTEE/TrustZone boot path.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
Cc: Fabio Estevam <fabio.estevam at nxp.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Marco Franchi <marco.franchi at nxp.com>
Cc: Vanessa Maegima <vanessa.maegima at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 board/warp7/warp7.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/board/warp7/warp7.c b/board/warp7/warp7.c
index 337e76b..219ab6f 100644
--- a/board/warp7/warp7.c
+++ b/board/warp7/warp7.c
@@ -16,6 +16,7 @@
 #include <asm/io.h>
 #include <common.h>
 #include <fsl_esdhc.h>
+#include <fsl_sec.h>
 #include <i2c.h>
 #include <mmc.h>
 #include <asm/arch/crm_regs.h>
@@ -225,6 +226,10 @@ int board_init(void)
 		setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 	#endif
 
+	#ifdef CONFIG_FSL_CAAM
+		sec_init();
+	#endif
+
 	return 0;
 }
 
@@ -366,5 +371,4 @@ int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 
 	return 0;
 }
-
 #endif /* ifdef CONFIG_USB_GADGET */
-- 
2.7.4