Import USB DFU programmer from ST ...

This commit imports, squashes and fixes up the following commits by ST:

110dad1 stm32mp1: add USB programmer
d6c7f1f plat/st: initialize dev_status with correct status
78ddbb9 io: io_programmer_st_usb: improve timeout management in usb loop

It excludes the code for the UART programmer.
I used it this way:

make CROSS_COMPILE=arm-none-eabi- PLAT=stm32mp1 ARCH=aarch32 ARM_ARCH_MAJOR=7 AARCH32_SP=sp_min STM32MP_SDMMC=1 STM32MP_EMMC=1 STM32MP_USB_PROGRAMMER=1 DTB_FILE_NAME=stm32mp157c-dk2.dtb DEBUG=1
dfu-util -d 0483:df11 -a 1 -D build/stm32mp1/debug/tf-a-stm32mp157c-dk2.stm32
dfu-util -d 0483:df11 -a 0 -D build/stm32mp1/debug/tf-a-stm32mp157c-dk2.stm32
dfu-util -d 0483:df11 -a 3 -D ~/barebox/images/barebox-stm32mp157c-seeed-odyssey.img
dfu-util -d 0483:df11 -e -a 0

stm32mp1: cosmetics in platform.mk ...

Remove some useless extra tabs or spaces.
Replace some spaces with tabs.

Change-Id: I0e8e2a1a1be7a1109ba7f3e3ae35e3fe1b5b4552
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: update rules for stm32image tool ...

In heavy parallel builds, it has sometimes been seen issues with the
tool not generated before it was needed. Change some rules order and
dependency to solve that.

Change-Id: I8f4b4f46a2ea0fe496bc66bca47c66d1c81d3c99
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: add macros to define PLAT_PARTITION_MAX_ENTRIES ...

There were fixed values when computing PLAT_PARTITION_MAX_ENTRIES.
Use STM32_BL33_PARTS_NUM and STM32_RUNTIME_PARTS_NUM. The first one is
for the number of copies of BL33. The second one depends on the use case
SP_min or OP-TEE. For OP-TEE, there are 3 partitions. For SP_min, as it
is in the same binary as BL2, it is set to 0. It will be set to 1 if
BL32 is in a separate binary.

Change-Id: Iba4d8ec5fbc713bebfbdcd9f9426c3fded20d3ad
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: sort platform.mk ...

First put Makefile variables definition, then definitions for each feature,
then C flags, then source files, then compilation rules.

Change-Id: I238115ea2fe4ebafccd2135979814c27932c34e2
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: use ASFLAGS for binary paths ...

To simplify the rule that creates the concatenated binary, use ASFLAGS
instead of adding all paths in the AS command line. This allows a better
management if a binary is not present.

Change-Id: Ic8b4566e7dedc6f55be355a92e3b214cef138d9b
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: use internal MAKE_LD macro to generate stm32 linker files ...

The previous proprietary version was not correctly handling dependencies.
Using MAKE_LD from make_helpers files now correctly handles that.
The generated linker script is the same as before.

Change-Id: Iccfd8dc3fffa7a33e73b184b72e0dfd5d26bc9c9
Signed-off-by: Yann Gautier <yann.gautier@st.com>

build_macros.mk: include assert and define loop macros ...

Loop macros make it easier for developers to include new variables to
assert or define and also help code code readability on makefiles.

Change-Id: I0d21d6e67b3eca8976c4d856ac8ccc02c8bb5ffa
Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>

stm32mp1: disable neon in sp_min ...

Disable use of Neon VFP support for platform stm32mp1 when
building with SP_MIN runtime services as these can conflict with
non-secure world use of NEON support. This is preferred over a
systematic backup/restore of NEON context when switching
between non-secure and secure worlds.

When NEON support is disabled, this is done for both BL2 and BL32 as
build process uses common libraries built once for both binaries.

Change-Id: I4e8808dcb6ef58fc839e6f85fd6e45cfbaa34be0
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>

plat/stm32: Use generic fdt_read_uint32_array() implementation ...

The device tree parsing code for the STM32 platform is using its own FDT
helper functions, some of them being rather generic.
In particular the existing fdt_read_uint32_array() implementation is now
almost identical to the new generic code in fdt_wrappers.c, so we can
remove the ST specific version and adjust the existing callers.

Compared to the original ST implementation the new version takes a
pointer to the DTB as the first argument, and also swaps the order of
the number of cells and the pointer.

Change-Id: Id06b0f1ba4db1ad1f733be40e82c34f46638551a
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

stm32mp1: dynamically map DDR later and non-cacheable during its test ...

A speculative accesses to DDR could be done whereas it was not reachable
and could lead to bus stall.
To correct this the dynamic mapping in MMU is used.
A first mapping is done for DDR tests with MT_NON_CACHEABLE attribute,
once DDR access is setup. It is then unmapped and a new mapping DDR is done
with cacheable attribute (through MT_MEMORY) to speed-up BL33 (or OP-TEE)
load.

The disabling of cache during DDR tests is also removed, as now useless.
A call to new functions stm32mp_{,un}map_ddr_non_cacheable() is done
instead.

PLAT_XLAT_TABLES_DYNAMIC is activated globally as used in BL2 and BL32.

BL33 max size is also updated to take into account the secure and shared
memory areas. Those are used in OP-TEE case.

Change-Id: I22c48b4a48255ee264991c34ecbb15bfe87e67c3
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: platform.mk: support generating multiple images in one build ...

Board Support for the stm32mp1 platform is contained in the device tree,
so if we remove hardcoding of board name from the Makefile, we can build
the intermediary objects once and generate one new tf-a-*.stm32 binary
for every device tree specified. All in one go.

With implicit rules implemented, we only need to change the top level
target to support multi-image builds on the stm32mp1.

Change-Id: I4cae7d32a4c03a3c29c559dc5332e002223902c1
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

stm32mp1: platform.mk: migrate to implicit rules ...

Board Support for the stm32mp1 platform is contained in the device tree,
so if we remove hardcoding of board name from the Makefile, we can build
the intermediary objects once and generate one new tf-a-*.stm32 binary
for every device tree specified. All in one go.

Prepare for this by employing implicit rules.

Change-Id: I5a022a89eb12696cd8cee7bf28ac6be54849901f
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

stm32mp1: platform.mk: derive map file name from target name ...

Doing this allows us in the next commit to use implicit rules (%-patterns)
to cover all the images we generate during a stm32mp1 build.

Change-Id: Ibde59d10ccce42566f82820117d7fd0d77345e6c
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

stm32mp1: platform.mk: generate linker script with fixed name ...

The linker script has no board-specific information that necessitates it
having a name derived from the board name. Give it a fixed name, so we
can later reuse the same linker script for multiple boards.

Change-Id: Ie6650f00389f4ab8577ae82a36c620af9c64101e
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

stm32mp1: platform.mk: use PHONY for the appropriate targets ...

Currently, building TF-A for STM32MP1 triggers a full rebuild,
avoid this by removing the .PHONY: specification for the final image and
replace it by specifying PHONYness for the targets that don't actually
produce file output.

This will come in handy in follow-up commits, when implicit rules are
introduced, as implicit rule search is skipped for .PHONY targets.

Change-Id: Ib9966479032b081a54123b99f889760e85639f19
Fixes: f74cbc93a ("stm32mp1: Link BL2, BL32 and DTB in one binary")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

stm32mp1: Add support for SPI-NOR boot device ...

STM32MP1 platform is able to boot from SPI-NOR devices.
These modifications add this support using the new
SPI-NOR framework.

Change-Id: I75ff9eba4661f9fb87ce24ced2bacbf8558ebe44
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

stm32mp1: Add support for SPI-NAND boot device ...

STM32MP1 platform is able to boot from SPI-NAND devices.
These modifications add this support using the new
SPI-NAND framework.

Change-Id: I0d5448bdc4bde153c1209e8043846c0f935ae5ba
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

stm32mp1: Add support for raw NAND boot device ...

STM32MP1 platform is able to boot from raw NAND devices.
These modifications add this support using the new
raw NAND framework.

Change-Id: I9e9c2b03930f98a5ac23f2b6b41945bef43e5043
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

stm32mp1: add compilation flags for boot devices ...

Adds compilation flags to specify which drivers will be
embedded in the generated firmware.

Change-Id: Ie9decc89c3f26cf17e7148a3a4cf337fd35940f7
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>

stm32mp1: add authentication support for stm32image ...

This commit adds authentication binary support for STM32MP1.
It prints the bootrom authentication result if signed
image is used and authenticates the next loaded STM32 images.
It also enables the dynamic translation table support
(PLAT_XLAT_TABLES_DYNAMIC) to use bootrom services.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: Iba706519e0dc6b6fae1f3dd498383351f0f75f51

stm32mp1: add watchdog support ...

Introduce driver for STM32 IWDG peripheral (Independent Watchdog).
It is configured according to device tree content and should be enabled
from there.
The watchdog is not started by default. It can be started after an HW
reset if the dedicated OTP is fused.

The watchdog also needs to be frozen if a debugger is attached.
This is done by configuring the correct bits in DBGMCU.
This configuration is allowed by checking BSEC properties.

An increase of BL2 size is also required when adding this new code.

Change-Id: Ide7535d717885ce2f9c387cf17afd8b5607f3e7f
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>

Remove MULTI_CONSOLE_API flag and references to it ...

The new API becomes the default one.

Change-Id: Ic1d602da3dff4f4ebbcc158b885295c902a24fec
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>

stm32mp1: remove useless LIBFDT_SRCS from PLAT_BL_COMMON_SOURCES ...

Remove inclusion of libfdt source files in source file list since these
are already included from generic libfdt.mk makefile.

Change-Id: If42624557c4d88ca85d70f83b1b08c58f50afe72
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: add general SYSCFG management ...

The system configuration controller is mainly used to manage
the compensation cell and other IOs and system related settings.

The SYSCFG driver is in charge of configuring masters on the interconnect,
IO compensation, low voltage boards, or pull-ups for boot pins.
All other configurations should be handled in Linux drivers requiring it.

Device tree files are also updated to manage vdd-supply regulator.

Change-Id: I10fb513761a7d1f2b7afedca9c723ad9d1bccf42
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>

clk: stm32mp1: move oscillator functions to generic file ...

Those functions are generic for parsing nodes from device tree
hence could be located in generic source file.

The oscillators description structure is also moved to STM32MP1 clock
driver, as it is no more used in stm32mp1_clkfunc and cannot be in a
generic file.

Change-Id: I93ba74f4eea916440fef9b160d306af1b39f17c6
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: add OP-TEE support ...

Support booting OP-TEE as BL32 boot stage and secure runtime
service.

OP-TEE executes in internal RAM and uses a secure DDR area to store
the pager pagestore. Memory mapping and TZC are configured accordingly
prior OP-TEE boot. OP-TEE image is expected in OP-TEE v2 format where
a header file describes the effective boot images. This change
post processes header file content to get OP-TEE load addresses
and set OP-TEE boot arguments.

Change-Id: I02ef8b915e4be3e95b27029357d799d70e01cd44
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>

stm32mp1: split clkfunc code ...

Create a new file stm32mp_clkfunc.c to put functions that could be common
between several platforms.

Change-Id: Ica915c796b162b2345056b33328acc05035a242c
Signed-off-by: Yann Gautier <yann.gautier@st.com>

stm32mp1: split code between common and private parts ...

Some parts of code could be shared with platform derivatives,
or new platforms.
A new folder plat/st/common is created to put common parts.

stm32mp_common.h is a common API aggregate.

Remove some casts where applicable.
Fix some types where applicable.
Remove also some platform includes that are already in stm32mp1_def.h.

Change-Id: I46d763c8d9e15732d1ee7383207fd58206d7f583
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>

stm32mp1: add BSEC driver ...

The BSEC (Boot and Security and OTP control) is intended to control an OTP
(one time programmable) fuse box, used for on-chip non-volatile storage
for device configuration and security parameters.

Change-Id: I38c44684c7b9c6a1f24ec0ae3fe99cec481d5a51
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>