diff options
| author | Etienne Carriere <etienne.carriere@linaro.org> | 2021-05-19 17:27:41 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-07-23 14:13:25 +0300 |
| commit | 9e6da34c72274578be6f86ba7b7aa7849a624315 (patch) | |
| tree | b620295bc54e40f7a00a60e313caa5fe3073f072 /drivers/tee/tee-uclass.c | |
| parent | 674afa6b3588dafe02b99406278ed81216fbefcb (diff) | |
| download | u-boot-9e6da34c72274578be6f86ba7b7aa7849a624315.tar.xz | |
tee: optee: sync cache on pre-reloc OP-TEE invocation
This change ensures both U-Boot and OP-TEE see the same content
from shared memory when OP-TEE is invoked prior U-Boot relocation.
This change is required since U-Boot may execute with data cache off
while OP-TEE always enables cache on memory shared with U-Boot.
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Diffstat (limited to 'drivers/tee/tee-uclass.c')
| -rw-r--r-- | drivers/tee/tee-uclass.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/tee/tee-uclass.c b/drivers/tee/tee-uclass.c index cb1b28e2f8..52412a4098 100644 --- a/drivers/tee/tee-uclass.c +++ b/drivers/tee/tee-uclass.c @@ -1,15 +1,17 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Copyright (c) 2018 Linaro Limited + * Copyright (c) 2018-2020 Linaro Limited */ #define LOG_CATEGORY UCLASS_TEE #include <common.h> +#include <cpu_func.h> #include <dm.h> #include <log.h> #include <malloc.h> #include <tee.h> +#include <asm/cache.h> #include <dm/device-internal.h> #include <dm/uclass-internal.h> @@ -235,3 +237,18 @@ void tee_optee_ta_uuid_to_octets(u8 d[TEE_UUID_LEN], d[7] = s->time_hi_and_version; memcpy(d + 8, s->clock_seq_and_node, sizeof(s->clock_seq_and_node)); } + +void tee_flush_all_shm_dcache(struct udevice *dev) +{ + struct tee_uclass_priv *priv = dev_get_uclass_priv(dev); + struct tee_shm *s; + + list_for_each_entry(s, &priv->list_shm, link) { + ulong start = rounddown((ulong)s->addr, + CONFIG_SYS_CACHELINE_SIZE); + ulong end = roundup((ulong)s->addr + s->size, + CONFIG_SYS_CACHELINE_SIZE); + + flush_dcache_range(start, end); + } +} |