fix(st-rif): do not assign an unused value for node when parsing config

In risaf_parse_fwconfig(), node was assigned a -1 value. But it is then
overwritten without the first value being used. Remove

fix(st-rif): do not assign an unused value for node when parsing config

In risaf_parse_fwconfig(), node was assigned a -1 value. But it is then
overwritten without the first value being used. Remove this assignment.
This issue was found by Coverity: Defect (unused_value).

Change-Id: Id463d91bb62e37e3413ee8ddd9089f7a93c8e8b0
Signed-off-by: Yann Gautier <yann.gautier@st.com>

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feat(st-rif): add STM32MP2x support in RIFSC driver

Adapt RIFSC driver to support all STM32MP2 variants, with specific
RIFSC IDs- in semaphore list, and maximum ID.

Signed-off-by: Nicolas Le Bayon

feat(st-rif): add STM32MP2x support in RIFSC driver

Adapt RIFSC driver to support all STM32MP2 variants, with specific
RIFSC IDs- in semaphore list, and maximum ID.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: Ice244c4518c0b657d625bd7269ea6ad9a04e80c6

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feat(st-rif): add RISAF MCE support for STM32MP21

On STM32MP21, RISAF embeds a second encryption method, based on MCE
peripheral, specifically against side-channel attacks using a specific
key with

feat(st-rif): add RISAF MCE support for STM32MP21

On STM32MP21, RISAF embeds a second encryption method, based on MCE
peripheral, specifically against side-channel attacks using a specific
key with two possible sizes: 128 or 256 bits.
Size can be configured via device tree.
Add stm32mp2_risaf_write_mce_key() service in RISAF driver.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: I819385b0d9dcaa1081b51206211cec5b73b4d4b4

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feat(st-drivers): add RIFSC driver

RIFSC (RIF Security Controller) is responsible for the isolation
of hardware resources like memory or peripherals. It is composed of:

-RISC registers(slave periph

feat(st-drivers): add RIFSC driver

RIFSC (RIF Security Controller) is responsible for the isolation
of hardware resources like memory or peripherals. It is composed of:

-RISC registers(slave peripherals) with RISUP(Resource Isolation
Slave Unit for Peripherals) OR RISAL(Resource Isolation Slave Unit
for Address space - Lite) logics.
-RIMC registers(Non RIF-Aware masters counterpart) with RIMU
(Resource Isolation Master Unit) logic. It is possible for a master to
inherit from its slave port(RISUP) configuration.

This doesn't support semaphore acquisition.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: Iba4cdbf53243292fa0b42cad8392c43734dd9bc2

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feat(st-drivers): add RISAF driver

Introduction of Resource Isolation Slave for Address space - Full
(RISAF) driver to configure main memory regions with access rights
defined in device node in DT(t

feat(st-drivers): add RISAF driver

Introduction of Resource Isolation Slave for Address space - Full
(RISAF) driver to configure main memory regions with access rights
defined in device node in DT(through FCONF compliance) or statically.

The driver is enabled as BL2 sources. Add driver-related platform
services.
RISAF base addresses and key size are set in platform definitions.

Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: Iae99985e8db7cb2b27f9ca25669e74c8e08792d2

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