diff options
| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-01-19 16:58:29 +0000 |
|---|---|---|
| committer | Kostya Porotchkin <kostap@marvell.com> | 2018-04-16 14:06:36 +0300 |
| commit | a8b539ba7f4709b2f296fb07373badad88060fa4 (patch) | |
| tree | 3fdc3722bdb32d0451f5971cc80bfbdf5cfe8e1d /include/services/arm_arch_svc.h | |
| parent | 80bb363257d27f9c454481fcec78e6460d9b4191 (diff) | |
Implement support for SMCCC v1.1
SMCCC v1.1 comes with a relaxed calling convention for AArch64
callers. The caller only needs to save x0-x3 before doing an SMC
call.
This patch adds support for SMCCC_VERSION and SMCCC_ARCH_FEATURES.
Refer to "Firmware Interfaces for mitigating CVE_2017_5715 System
Software on Arm Systems"[0] for more information.
[0] https://developer.arm.com/-/media/developer/pdf/ARM%20DEN%200070A%20Firmware%20interfaces%20for%20mitigating%20CVE-2017-5715_V1.0.pdf
Change-Id: If5b1c55c17d6c5c7cb9c2c3ed355d3a91cdad0a9
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/53235
Tested-by: Kostya Porotchkin <kostap@marvell.com>
Reviewed-by: Kostya Porotchkin <kostap@marvell.com>
Diffstat (limited to 'include/services/arm_arch_svc.h')
| -rw-r--r-- | include/services/arm_arch_svc.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/services/arm_arch_svc.h b/include/services/arm_arch_svc.h new file mode 100644 index 00000000..29616013 --- /dev/null +++ b/include/services/arm_arch_svc.h @@ -0,0 +1,14 @@ +/* + * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef __ARM_ARCH_SVC_H__ +#define __ARM_ARCH_SVC_H__ + +#define SMCCC_VERSION U(0x80000000) +#define SMCCC_ARCH_FEATURES U(0x80000001) +#define SMCCC_ARCH_WORKAROUND_1 U(0x80008000) + +#endif /* __ARM_ARCH_SVC_H__ */ |