On Sun, Apr 02, 2023 at 02:41:17PM +1200, Simon Glass wrote: > Hi Abdellatif, > > On Wed, 29 Mar 2023 at 05:12, Abdellatif El Khlifi < > abdellatif.elkhl...@arm.com> wrote: > > > > turn on EFI MM communication > > > > On corstone1000 platform MM communication between u-boot > > and the secure world (Optee) is done using the FF-A bus. > > > > Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhl...@arm.com> > > Cc: Tom Rini <tr...@konsulko.com> > > Cc: Simon Glass <s...@chromium.org> > > Cc: Ilias Apalodimas <ilias.apalodi...@linaro.org> > > Cc: Jens Wiklander <jens.wiklan...@linaro.org> > > > > --- > > Changelog: > > =============== > > > > v9: update copyright string > > > > v8: > > > > * drop OP-TEE configs from Corstone-1000 defconfig > > > > v7: > > > > * improve the definition of FFA_SHARED_MM_BUFFER_ADDR and > > FFA_SHARED_MM_BUFFER_OFFSET > > * update FFA_SHARED_MM_BUFFER_ADDR value > > > > v6: > > > > * corstone-1000: enable optee driver > > * corstone-1000: remove CONFIG_ARM_FFA_EFI_RUNTIME_MODE from the defconfig > > > > v4: > > > > * corstone-1000: turn on EFI MM communication > > > > configs/corstone1000_defconfig | 2 ++ > > include/configs/corstone1000.h | 15 +++++++++++++-- > > 2 files changed, 15 insertions(+), 2 deletions(-) > > > > diff --git a/configs/corstone1000_defconfig > b/configs/corstone1000_defconfig > > index 74250c7524..a7bfcbb2b9 100644 > > --- a/configs/corstone1000_defconfig > > +++ b/configs/corstone1000_defconfig > > @@ -52,3 +52,5 @@ CONFIG_DM_SERIAL=y > > CONFIG_USB=y > > CONFIG_USB_ISP1760=y > > CONFIG_ERRNO_STR=y > > +CONFIG_EFI_MM_COMM_TEE=y > > +CONFIG_ARM_FFA_TRANSPORT=y > > diff --git a/include/configs/corstone1000.h > b/include/configs/corstone1000.h > > index 3347c11792..4ef1f05e40 100644 > > --- a/include/configs/corstone1000.h > > +++ b/include/configs/corstone1000.h > > @@ -1,9 +1,11 @@ > > /* SPDX-License-Identifier: GPL-2.0+ */ > > /* > > - * (C) Copyright 2022 ARM Limited > > * (C) Copyright 2022 Linaro > > * Rui Miguel Silva <rui.si...@linaro.org> > > - * Abdellatif El Khlifi <abdellatif.elkhl...@arm.com> > > + * Copyright 2022-2023 Arm Limited and/or its affiliates < > open-source-off...@arm.com> > > + * > > + * Authors: > > + * Abdellatif El Khlifi <abdellatif.elkhl...@arm.com> > > * > > * Configuration for Corstone1000. Parts were derived from other ARM > > * configurations. > > @@ -14,6 +16,15 @@ > > > > #include <linux/sizes.h> > > > > +#define FFA_SHARED_MM_BUFFER_SIZE SZ_4K /* 4 KB */ > > + > > +/* > > + * shared buffer physical address used for communication between > > + * u-boot and the MM SP > > + */ > > +#define FFA_SHARED_MM_BUFFER_ADDR 0x02000000UL > > +#define FFA_SHARED_MM_BUFFER_OFFSET 0 > > + > > #define V2M_BASE 0x80000000 > > > > #define CFG_PL011_CLOCK 50000000 > > -- > > 2.25.1 > > > > As a higher-level question, could this whole FFA implementation code be put > into Linux or fwupd?
Hi Simon, FF-A is basically a communication mechanism between the secure and non-secure world for Arm. Linux has support for it. fwupd should be completely agnostic to the protocol Regards /Ilias > > Regards, > Simon
