Commit Graph

921 Commits

Author SHA1 Message Date
Andre Przywara 93fa305c0a plat/allwinner: Only enable DRIVEVBUS if really needed
The DRIVEVBUS power rail of the AXP803 PMIC is mostly used to supply
the USB bus power on micro USB sockets, when used in host mode. As this
is a dynamic operation, and mostly we want micro USB sockets to act in
client mode initially, BL31 should not actually enable this power line.
However, on some boards DRIVEVBUS is used to supply power to normal
USB-A sockets. Failing to activate this line there results in
non-functional USB in U-Boot on those boards.

For that reason we were enabling DRIVEVBUS so far, as it did not seem to
cause any harm to the other boards. However it turns out that on the
Pinephone (and other systems with a battery), actually enabling DRIVEVBUS
unconditionally causes serious problems (reboot loop).

To accommodate both use cases, without reverting to a build time option,
check the default OTG configuration in the devicetree. For boards with
USB-A sockets this is set to "host", on boards with micro-B sockets to
"otg". Depending on this setting, we either enable DRIVEVBUS or leave it
alone.

This fixes TF-A on the Pinephone and potentially other battery powered
devices.

Change-Id: Iec0e07f218b2b4393bf4e05c3386261f8ed19e9f
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2020-08-17 11:13:59 +01:00
Manish Pandey 2947412d54 dualroot: add chain of trust for Platform owned SPs
For dualroot CoT there are two sets of SP certificates, one owned by
Silicon Provider(SiP) and other owned by Platform. Each certificate can
have a maximum of 4 SPs.

This patch reduces the number of SiP owned SPs from 8 to 4 and adds
the remaining 4 to Plat owned SP.
Plat owned SP certificate is signed using Platform RoT key and
protected against anti-rollback using the Non-trusted Non-volatile
counter.

Change-Id: Idc3ddd87d6d85a5506a7435f45a6ec17c4c50425
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
2020-08-12 14:30:31 +01:00
Manish Pandey 03a5225c6a tbbr/dualroot: rename SP package certificate file
Currently only single signing domain is supported for SP packages but
there is plan to support dual signing domains if CoT is dualroot.

SP_CONTENT_CERT_ID is the certificate file which is currently generated
and signed with trusted world key which in-turn is derived from Silicon
provider RoT key.
To allow dual signing domain for SP packages, other certificate file
will be derived from Platform owned RoT key.

This patch renames "SP_CONTENT_CERT_ID" to "SIP_SP_CONTENT_CERT_ID" and
does other related changes.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I0bc445a3ab257e2dac03faa64f46e36a9fed5e93
2020-07-31 12:46:21 +01:00
Alexei Fedorov b29c350cda GIC-600: Fix MISRA-2012 defects
This patch fixes violation of Rules 10.1, 10.4,
11.9 and 13.2 reported by MISRA-2012 scan.

Change-Id: Ibe9190cb0f26ae85d9a31db8e92fbd32f1740e25
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
2020-07-29 16:51:05 +00:00
Alexei Fedorov 858e69e85e TZ DMC620 driver: Fix MISRA-2012 defects
This patch fixes defects 10.3, 10.4, 10.7, 20.7
reported by MISRA-2012 scan and adds braces for
conditional statements according to the TF-A
coding style.

Change-Id: If84ed31cdd55bc8e7cdd2a5f48c0dacc25792112
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
2020-07-27 15:04:14 +01:00
joanna.farley 3ee148d643 Merge changes from topics "af/add_measured_boot_bl1_bl2", "af/add_measured_boot_driver", "af/add_measured_boot_driver_support", "af/add_measured_boot_fconf", "af/add_measured_boot_fvp" into integration
* changes:
  plat/arm/board/fvp: Add support for Measured Boot
  TF-A: Add support for Measured Boot driver to FCONF
  TF-A: Add support for Measured Boot driver in BL1 and BL2
  TF-A: Add Event Log for Measured Boot
  TF-A: Add support for Measured Boot driver
2020-07-22 16:35:11 +00:00
Manish Pandey f15c59d7ac Merge "io_fip: return -ENFILE when a file is already open" into integration 2020-07-21 21:41:51 +00:00
Manish Pandey f7bfed693f Merge "gicv3: Do power management on Arm GIC-Clayton as well" into integration 2020-07-21 21:34:52 +00:00
Alexei Fedorov d686fa3b97 TF-A: Add Event Log for Measured Boot
This patch adds support for Event Log generation required
for Measured Boot functionality.

Change-Id: I34f05a33565e6659e78499d62cc6fb00b7d6c2dc
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
2020-07-21 20:33:15 +00:00
Andre Przywara e270e67511 gicv3: Do power management on Arm GIC-Clayton as well
The Arm GIC-Clayton IP has the same power management requirements as
the GIC-600, when it comes to powering up the redistributors before
using them.

Add the IIDR value to the existing list of implementations requiring
the power sequence.

Change-Id: Ib965dfe278c40a4fff94f65a8d445c27a2ae6fd2
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2020-07-21 11:52:47 +01:00
Alexei Fedorov 1322dc94f7 TF-A GICv2 driver: Introduce makefile
This patch moves all GICv2 driver files into new added
'gicv2.mk' makefile for the benefit of the generic driver
which can evolve in the future without affecting platforms.

NOTE: Usage of 'drivers/arm/gic/common/gic_common.c' file
is now deprecated and platforms with GICv2 driver need to
be modified to include 'drivers/arm/gic/v2/gicv2.mk' in
their makefiles.

Change-Id: Ib10e71bdda0e5c7e80a049ddce2de1dd839602d1
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
2020-07-20 16:44:34 +00:00
Madhukar Pappireddy c82a2bcd38 Merge changes from topic "brcm_rng_driver" into integration
* changes:
  driver: brcm: add RNG driver
  plat/brcm: Define RNG base address
2020-07-17 15:31:26 +00:00
Manish Pandey 6e99fe1a37 Merge "IO Driver Misra Cleanup" into integration 2020-07-16 22:43:12 +00:00
johpow01 d471bd9cfc IO Driver Misra Cleanup
This patch cleans up MISRA C violations in the IO driver files.  Some
things did not make sense to fix or would require sweeping changes
but the simple issues have been resolved.

Defects Fixed

File                        Line Rule
drivers/io/io_fip.c         39   MISRA C-2012 Rule 5.6 (required)
drivers/io/io_fip.c         52   MISRA C-2012 Rule 8.9 (advisory)
drivers/io/io_fip.c         60   MISRA C-2012 Rule 5.9 (advisory)
drivers/io/io_fip.c         285  MISRA C-2012 Rule 8.9 (advisory)
drivers/io/io_fip.c         336  MISRA C-2012 Rule 15.4 (advisory)
drivers/io/io_fip.c         340  MISRA C-2012 Rule 15.4 (advisory)
drivers/io/io_fip.c         342  MISRA C-2012 Rule 15.4 (advisory)
drivers/io/io_memmap.c      30   MISRA C-2012 Rule 5.6 (required)
drivers/io/io_memmap.c      32   MISRA C-2012 Rule 5.9 (advisory)
drivers/io/io_memmap.c      85   MISRA C-2012 Rule 11.8 (required)
drivers/io/io_semihosting.c 66   MISRA C-2012 Rule 11.8 (required)
drivers/io/io_storage.c     73   MISRA C-2012 Rule 5.9 (advisory)
drivers/io/io_storage.c     116  MISRA C-2012 Rule 13.4 (advisory)

Signed-off-by: John Powell <john.powell@arm.com>
Change-Id: Id9b1b2b684588d4eaab674ed4ed04f3950dd21f4
2020-07-16 13:10:23 -05:00
Madhukar Pappireddy 21e04cf2a0 Merge "drivers/stm32_hash: register resources as secure or not" into integration 2020-07-16 14:40:29 +00:00
Madhukar Pappireddy a254799646 Merge "drivers/stm32_gpio: register GPIO resources as secure or not" into integration 2020-07-16 14:40:23 +00:00
Madhukar Pappireddy aa8390c2c8 Merge "drivers/stm32_iwdg: register IWDG resources as secure or not" into integration 2020-07-16 14:40:18 +00:00
Madhukar Pappireddy f4d5b6a78a Merge "drivers/stm32mp_pmic: register PMIC resources as secure or not" into integration 2020-07-16 14:40:13 +00:00
Madhukar Pappireddy 6c71c9bb63 Merge "drivers: st: clock: register parent of secure clocks" into integration 2020-07-16 14:38:46 +00:00
Manish Pandey 8d5db315d3 Merge "io_storage: remove redundant assigments" into integration 2020-07-14 14:11:14 +00:00
Bharat Gooty c10563ba42 driver: brcm: add RNG driver
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
Change-Id: I490d7e4d49bd9f5a62d343a264a1e14c2066ceca
2020-07-13 18:01:19 +05:30
Masahiro Yamada 6eb75a1a2f io_fip: return -ENFILE when a file is already open
The cause of failure is not memory shortage.

The comment for ENFILE in include/lib/libc/errno.h

  /* Too many open files in system */

... is a better match to the warning message here.

Change-Id: I45a1740995d464edd8b3e32b93f1f92ba17e5874
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-07-11 15:24:13 +09:00
Konstantin Porotchkin 506ff4c0c1 drivers: marvell: Fix the LLC SRAM driver
- Fix the line address macro
- LLC invalidate and enable before ways lock for allocation
- Add support for limited SRAM size allocation
- Add SRAM RW test function

Change-Id: I1867ece3047566ddd7931bd7472e1f47fb42c8d4
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
2020-07-10 10:55:33 +00:00
Grzegorz Jaszczyk 2cae4a8586 drivers: marvell: mg_conf_cm3: pass comphy lane number to AP FW
Since the AP process can be enabled on different setups, the information
about used comphy lane should be passed to AP FW. For instance:
- A8K development board uses comphy lane 2 for eth 0
- cn913x development board uses comphy lane 4 for eth 0

Change-Id: Icf001fb3eea4d9c24c09384e49844ecaf8655ad2
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-07-10 10:55:09 +00:00
Grzegorz Jaszczyk 0081cdd1c6 plat: marvell: armada: move mg conf related code to appropriate driver
Now when mg_conf_cm3 driver is present - move all relevant code there.

Change-Id: I444d9e877c450d6ee69ca3a49b547e4c3aeac0be
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-07-10 10:55:03 +00:00
Grzegorz Jaszczyk 5a9e46e69c marvell: comphy: start AP FW when comphy AP mode selected
After configuring comphy to AP mode also start AP FW.

Change-Id: Ib28977d7ee643575a818ba17f69dea0b7e8e0df4
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-07-10 10:54:57 +00:00
Grzegorz Jaszczyk 9b88367323 drivers: marvell: mg_conf_cm3: add basic driver
Implement function which will allow to start AP FW.

Change-Id: Ie0fc8ad138bf56b10809cdc92d1e5e96a2aaf33f
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-07-10 10:54:50 +00:00
Masahiro Yamada a1ab463a9d io_storage: remove redundant assigments
The assignments to 'result' are unneeded.

Change-Id: I18899f10bf9bd7f219f0e47a981683d8b4701bde
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-07-09 22:27:47 +09:00
Etienne Carriere 3d0d0a1b4c drivers/stm32_hash: register resources as secure or not
Register in the shared resources driver the secure or non-secure state
of the HASH instances. Note that only BL32 needs to register the
shared peripheral because BL2 does not embed the shared resources
driver.

Change-Id: I7f78fa8e47da71d48ef8b1dfe4d6f040fe918d8b
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
2020-07-08 12:56:23 +02:00
Etienne Carriere 66de6f3c30 drivers/stm32_gpio: register GPIO resources as secure or not
Register in the shared resources driver the secure or non-secure state
of the GPIO pins.

Change-Id: Ifda473bcbbb0af799be6587961d6641edf887605
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
2020-07-08 12:56:20 +02:00
Etienne Carriere bcc360f7e0 drivers/stm32_iwdg: register IWDG resources as secure or not
Register in the shared resources driver the secure or non-secure state
of the IWDG instances.

Change-Id: I3a3bc9525447f6a2a465891ca3a3fd5fe664ca07
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
2020-07-08 12:56:17 +02:00
Etienne Carriere f564d439a9 drivers/stm32mp_pmic: register PMIC resources as secure or not
Register in the shared resources driver the secure or non-secure
state of the PMIC.

Change-Id: Ic1f172ba62785018f8e9bb321782d725e2d2f434
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
2020-07-08 12:56:15 +02:00
Etienne Carriere 37e8295abd drivers: st: clock: register parent of secure clocks
Introduce stm32mp1_register_clock_parents_secure() in stm32mp1
clock driver to allow platform shared resources to register as
secure the parent clocks of a clock registered as secure.

Change-Id: I53a9ab6aa78ee840ededce67e7b12a84e08ee843
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
2020-07-08 12:55:56 +02:00
Varun Wadekar 8e570b71d8 drivers: arm: gicv3: auto-detect presence of GIC600-AE
This patch adds the IIDR value for GIC600-AE to the gicv3_is_gic600()
helper function. This helps platforms supporting this version of the
GIC600 interrupt controller to function with the generic GIC driver.

Verified with tftf-validation test suite

******************************* Summary *******************************
> Test suite 'Framework Validation'
                                                                Passed
> Test suite 'Timer framework Validation'
                                                                Passed
=================================
Tests Skipped : 0
Tests Passed  : 6
Tests Failed  : 0
Tests Crashed : 0
Total tests   : 6
=================================
NOTICE:  Exiting tests.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I518ae7b56f7f372e374e453287d76ca370fc3574
2020-07-07 10:31:11 -07:00
Manish Pandey edd8188d32 Merge changes Ib9c82b85,Ib348e097,I4dc315e4,I58a8ce44,Iebc03361, ... into integration
* changes:
  plat: marvell: armada: a8k: add OP-TEE OS MMU tables
  drivers: marvell: add support for mapping the entire LLC to SRAM
  plat: marvell: armada: add LLC SRAM CCU setup for AP806/AP807 platforms
  plat: marvell: armada: reduce memory size reserved for FIP image
  plat: marvell: armada: platform definitions cleanup
  plat: marvell: armada: a8k: check CCU window state before loading MSS BL2
  drivers: marvell: add CCU driver API for window state checking
  drivers: marvell: align and extend llc macros
  plat: marvell: a8k: move address config of cp1/2 to BL2
  plat: marvell: armada: re-enable BL32_BASE definition
  plat: marvell: a8k: extend includes to take advantage of the phy_porting_layer
  marvell: comphy: initialize common phy selector for AP mode
  marvell: comphy: update rx_training procedure
  plat: marvell: armada: configure amb for all CPs
  plat: marvell: armada: modify PLAT_FAMILY name for 37xx SoCs
2020-06-26 13:59:38 +00:00
Manish V Badarkhe 04e06973e1 fconf: Clean confused naming between TB_FW and FW_CONFIG
Cleaned up confused naming between TB_FW and FW_CONFIG.

Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I9e9f6e6ca076d38fee0388f97d370431ae067f08
2020-06-24 08:44:26 +01:00
Louis Mayencourt 243875eaf9 tbbr/dualroot: Add fw_config image in chain of trust
fw_config image is authenticated using secure boot framework by
adding it into the single root and dual root chain of trust.

The COT for fw_config image looks as below:

+------------------+       +-------------------+
| ROTPK/ROTPK Hash |------>| Trusted Boot fw   |
+------------------+       | Certificate       |
                           | (Auth Image)      |
                          /+-------------------+
                         /                   |
                        /                    |
                       /                     |
                      /                      |
                     L                       v
+------------------+       +-------------------+
| fw_config hash   |------>| fw_config         |
|                  |       | (Data Image)      |
+------------------+       +-------------------+

Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I08fc8ee95c29a95bb140c807dd06e772474c7367
2020-06-24 08:44:26 +01:00
Madhukar Pappireddy b667b3696b Merge "TF-A GIC driver: Add barrier before eoi" into integration 2020-06-22 19:57:52 +00:00
Manish Pandey 453e12c2f1 Merge changes from topic "scmi-msg" into integration
* changes:
  drivers/scmi-msg: smt entry points for incoming messages
  drivers/scmi-msg: support for reset domain protocol
  drivers/scmi-msg: support for clock protocol
  drivers/scmi-msg: driver for processing scmi messages
2020-06-22 14:24:31 +00:00
Sandeep Tripathy 5eb16c4717 TF-A GIC driver: Add barrier before eoi
It is desired to have the peripheral writes completed to clear the
interrupt condition and de-assert the interrupt request to GIC before
EOI write. Failing which spurious interrupt will occurred.

A barrier is needed to ensure peripheral register write transfers are
complete before EOI is done.

GICv2 memory mapped DEVICE nGnR(n)E writes are ordered from core point
of view. However these writes may pass over different interconnects,
bridges, buffers leaving some rare chances for the actual write to
complete out of order.

GICv3 ICC EOI system register writes have no ordering against nGnR(n)E
memory writes as they are over different interfaces.

Hence a dsb can ensure from core no writes are issued before the previous
writes are *complete*.

Signed-off-by: Sandeep Tripathy <sandeep.tripathy@broadcom.com>
Change-Id: Ie6362009e2f91955be99dca8ece14ade7b4811d6
2020-06-22 16:08:35 +05:30
Konstantin Porotchkin 5a40d70f06 drivers: marvell: add support for mapping the entire LLC to SRAM
Add llc_sram_enable() and llc_sram_disable() APIs to Marvell
cache_lls driver.
Add LLC_SRAM definition to Marvell common makefile - disabled
by the default.
Add description of LLC_SRAM flag to the build documentation.

Change-Id: Ib348e09752ce1206d29268ef96c9018b781db182
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
2020-06-19 18:03:29 +02:00
Konstantin Porotchkin 957a5add63 drivers: marvell: add CCU driver API for window state checking
Add ccu_is_win_enabled() API for checking the CCU window
state using AP and window indexes.

Change-Id: Ib955a2cac28b2729b0a763f3bbbea28b476a2fe4
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
2020-06-19 17:59:44 +02:00
Konstantin Porotchkin 772aa5ba75 drivers: marvell: align and extend llc macros
Make all LLC-related macros to start with the same prefix
Add more LLC control registers definitions
This patch is a preparation step for LLC SRAM support

Change-Id: I0a4f0fc83e8ef35be93dd239a85f2a9f88d1ab19
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
2020-06-19 17:59:43 +02:00
Grzegorz Jaszczyk 050eb19c7e marvell: comphy: initialize common phy selector for AP mode
Configuring common phy selector which was missing for AP mode.

Change-Id: I15be1ba50b8aafe9094734abec139d72c18bb224
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-06-19 17:13:09 +02:00
Grzegorz Jaszczyk 8e8ec8cff7 marvell: comphy: update rx_training procedure
1) Relay only on rx training, remove parts responsible for tx training
(trx training).
2) Add extra steps e.g. preconfigure FFE before starting training.
3) Remove some unnecessary steps like RRBS31 loopback setting which
shouldn't be relevant for tx_training.

Change-Id: Ib1e8567714f9ce33578186a262c339aa4b1c51f2
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
2020-06-19 17:13:09 +02:00
Manish Pandey 9935047b20 Merge changes I80316689,I23cac4fb,If911e7de,I169ff358,I4e040cd5, ... into integration
* changes:
  ddr: a80x0: add DDR 32-bit ECC mode support
  ble: ap807: improve PLL configuration sequence
  ble: ap807: clean-up PLL configuration sequence
  ddr: a80x0: add DDR 32-bit mode support
  plat: marvell: mci: perform mci link tuning for all mci interfaces
  plat: marvell: mci: use more meaningful name for mci link tuning
  plat: marvell: a8k: remove wrong or unnecessary comments
  plat: marvell: ap807: enable snoop filter for ap807
  plat: marvell: ap807: update configuration space of each CP
  plat: marvell: ap807: use correct address for MCIx4 register
  plat: marvell: add support for PLL 2.2GHz mode
  plat: marvell: armada: make a8k_common.mk and mss_common.mk more generic
  marvell: armada: add extra level in marvell platform hierarchy
2020-06-17 19:44:51 +00:00
Etienne Carriere 7d6fa6ecbe drivers/scmi-msg: smt entry points for incoming messages
This change implements SCMI channels for reading a SCMI message from a
shared memory and call the SCMI message drivers to route the message
to the target platform services.

SMT refers to the shared memory management protocol which is used
to get/put message/response in shared memory. SMT is a 28byte header
stating shared memory state and exchanged protocol data.

The processing entry for a SCMI message can be a secure interrupt
or fastcall SMCCC invocation.

SMT description in this implementation is based on the OP-TEE
project [1] itself based in the SCP-firmware implementation [2].

Link: [1] a58c4d706d
Link: [2] https://github.com/ARM-software/SCP-firmware.git

Change-Id: I416c7dab5c67954c6fe80bae8d8cdfdcda66873e
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2020-06-17 18:46:43 +02:00
Etienne Carriere 6cc2c1cbed drivers/scmi-msg: support for reset domain protocol
Adds SCMI reset domain protocol support in the SCMI message drivers
as defined in SCMI specification v2.0 [1]. Not all the messages
defined in the specification are supported.

scmi_msg_get_rd_handler() sanitizes the message_id value
against any speculative use of reset domain ID as a index since by
SCMI specification, IDs are indices.

This implementation is based on the OP-TEE project implementation [2]
itself based on the SCP-firmware implementation [3] of the SCMI
protocol server side.

Link: [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
Link: [2] 56a1f10ed9
Link: [3] https://github.com/ARM-software/SCP-firmware.git

Change-Id: If7cf13de40a815dedb40dcd5af8b6bb6725d9078
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2020-06-17 11:07:11 +02:00
Etienne Carriere c9e8300012 drivers/scmi-msg: support for clock protocol
Adds SCMI clock protocol support in the SCMI message drivers as
defined in SCMI specification v2.0 [1] for clock protocol messages.

Platform can provide one of the plat_scmi_clock_*() handler for the
supported operations set/get state/rate and others.

scmi_msg_get_clock_handler() sanitizes the message_id value
against any speculative use of clock ID as a index since by
SCMI specification, IDs are indices.

This implementation is based on the OP-TEE project implementation [2]
itself based on the SCP-firmware implementation [3] of the SCMI
protocol server side.

Link: [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
Link: [2] a7a9e3ba71
Link: [3] https://github.com/ARM-software/SCP-firmware.git

Change-Id: Ib56e096512042d4f7b9563d1e4181554eb8ed02c
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2020-06-17 11:07:02 +02:00
Etienne Carriere 75366ccd9b drivers/scmi-msg: driver for processing scmi messages
This change introduces drivers to allow a platform to create a basic
SCMI service and register handlers for client request (SCMI agent) on
system resources. This is the first piece of the drivers: an entry
function, the SCMI base protocol support and helpers for create
the response message.

With this change, scmi_process_message() is the entry function to
process an incoming SCMI message. The function expect the message
is already copied from shared memory into secure memory. The message
structure stores message reference and output buffer reference where
response message shall be stored.

scmi_process_message() calls the SCMI protocol driver according to
the protocol ID in the message. The SCMI protocol driver will call
defined platform handlers according to the message content.

This change introduces only the SCMI base protocol as defined in
SCMI specification v2.0 [1]. Not all the messages defined
in the specification are supported.

The SCMI message implementation is derived from the OP-TEE project [2]
itself based on the SCP-firmware implementation [3] of the SCMI protocol
server side.

Link: [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
Link: [2] ae8c806809
Link: [3] https://github.com/ARM-software/SCP-firmware/tree/v2.6.0

Change-Id: I639c4154a39fca60606264baf8d32452641f45e9
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
2020-06-17 11:05:04 +02:00