leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drivers: rng: optee_rng: register to CONFIG_OPTEE_SERVICE_DISCOVERY

Browse Source 
Changes optee_rng driver to register itself has a OP-TEE service so
that a device is bound for the driver when OP-TEE enumerates the
PTA RNG service.

Cc: Sughosh Ganu <sughosh.ganu@linaro.org>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Etienne Carriere 2022-07-26 16:21:43 +02:00 committed by Tom Rini
parent 94ccfb78a4
commit 57fb86a97d
2 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/rng/Kconfig
View File

@ -41,6 +41,7 @@ config RNG_NPCM
config RNG_OPTEE
bool "OP-TEE based Random Number Generator support"
depends on DM_RNG && OPTEE
default y if OPTEE_SERVICE_DISCOVERY
help
This driver provides support for the OP-TEE based Random Number
Generator on ARM SoCs where hardware entropy sources are not

7
drivers/rng/optee_rng.c
View File

@ -11,6 +11,9 @@
#include <dm/device.h>
#include <dm/device_compat.h>
#include <linux/sizes.h>
#include <tee/optee_service.h>
#define DRIVER_NAME "optee-rng"
#define TEE_ERROR_HEALTH_TEST_FAIL 0x00000001
@ -35,6 +38,8 @@
#define TA_HWRNG_UUID { 0xab7a617c, 0xb8e7, 0x4d8f, \
{ 0x83, 0x01, 0xd0, 0x9b, 0x61, 0x03, 0x6b, 0x64 } }
OPTEE_SERVICE_DRIVER(optee_rng, TA_HWRNG_UUID, DRIVER_NAME);
/** open_session_ta_hwrng() - Open session with hwrng Trusted App
*
* @dev: device
@ -177,7 +182,7 @@ static const struct dm_rng_ops optee_rng_ops = {
};
U_BOOT_DRIVER(optee_rng) = {
.name = "optee-rng",
.name = DRIVER_NAME,
.id = UCLASS_RNG,
.ops = &optee_rng_ops,
.probe = optee_rng_probe,