In case of monitor in DDR, BL2 exports the low power
functions using the context.
Adapt BL2 to embed the critical section and context
to share the corresponding information.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I198a50f3f15ab0e54d9e65e23da3d1c6fe3f8df5
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/182043


Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@st.com>

STGEN should also be saved before entering in Stop mode,
because its clock may be gated.

Signed-off-by: Pascal Paillet <p.paillet@st.com>
Change-Id: I864c3241e4c4daaec7eb32a17a6a8b5d90f0e999

When RCC[TZEN] is enabled secure world needs to save the secure and
non-secure clock configuration settings and restore them when
resuming.

Function stm32mp1_clk_mpu_suspend()/stm32mp1_clk_mpu_resume() are
made local and renamed clk_mpu_suspend()/clk_mpu_resume(). The
overall clock configuration is saved with stm32mp1_clock_suspend()
and restored with stm32mp1_clock_resume().

Change-Id: I1fc0c693c59ffe972961c2b23f30a39a520f3aaa
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>

When TF-A BL2 boots an OP-TEE, the OP-TEE may be a old version that
provides a V1 PM context. In such case, precomputed PLL1 settings
are not available in the wakeup context and shall be recomputed.

With this stm32_get_pll1_settings_from_context() has a return value
that states if the PLL1 settings were restored.

Change-Id: Ia561e4ee42a788bc14a05e583650c5eb050131fd
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/153628


Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: CIBUILD <smet-aci-builds@lists.codex.cro.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@st.com>

When coming back from standby, the backup value must be
restored with the sleep time.
Rework the function to add a backup counter value to be
added to the sleep time and move stgen functions to
stm32mp generic code.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I978a591a3a344561758117742b0dcdd862e1a6f0

All OPP PLL1 settings are computed during cold boot and saved in RAM.
During standby mode transitions, they are saved in the context and
restored when coming back to normal mode.
stm32_get_pll1_settings_from_context() is added to get easily them in BL2.
stm32_are_pll1_settings_valid_in_context() is used in BL32 and determines
if settings are already computed or not.

Change-Id: I8bfe925be4e9a0dd2cce8bf5486f54584d1d1716
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>

Change-Id: I8e0ba794e5ded1290fb83fe8d43ce54d4dc0e320
Signed-off-by: Yann Gautier <yann.gautier@st.com>

Add function stm32_get_boot_interface to get the current boot interface
from information saved in the TAMP register.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: I6e99fe172d895fd9d8dcb8d827b949d0e89b7879
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/tf-a/+/180870


Reviewed-by: CITOOLS <smet-aci-reviews@lists.codex.cro.st.com>
Reviewed-by: Yann GAUTIER <yann.gautier@st.com>
Tested-by: Yann GAUTIER <yann.gautier@st.com>

All identifiers, regardless of use, that start with two underscores are
reserved. This means they can't be used in header guards.

The style that this project is now to use the full name of the file in
capital letters followed by 'H'. For example, for a file called
"uart_example.h", the header guard is UART_EXAMPLE_H.

The exceptions are files that are imported from other projects:

- CryptoCell driver
- dt-bindings folders
- zlib headers

Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

This will be used by BL33 to get boot device and instance.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>