Add support for the M3W 3.0 SoC and synchronize the upstream ATF with
Renesas downstream ATF release v2.0.1.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Method cpld_reset_cpu of bl31 is called from the Linux kernel and uses
GPIO6, GPIO2 pins as SPI bus lines to control the CPLD device. But in the
kernel GPIO6_8 pin are initialized to work in interrupt mode instead of
the input/output mode. This leads to the fact that the SPI bus becomes
non-functional. In this patch we switch the GPIO6_8 pin back to the
input-output mode.
Signed-off-by: Sergii Boryshchenko <sergii.boryshchenko@globallogic.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
The ATF code fails to build with PMIC_ROHM_BD9571=0, add the missing
function into the PWRC code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Use the SCIF SCFSR:TEND bit to check that all data were transmitted by
the SCIF and that there are no more valid data to transmit in the FIFO.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Call the function only from architecture setup and at the end of
suspend cycle instead of calling it all over the place.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.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>
Reference code:
==============
rar_gen3: IPL and Secure Monitor Rev1.0.22
https://github.com/renesas-rcar/arm-trusted-firmware [rcar_gen3]
Author: Takuya Sakata <takuya.sakata.wz@bp.renesas.com>
Date: Thu Aug 30 21:26:41 2018 +0900
Update IPL and Secure Monitor Rev1.0.22
General Information:
===================
This port has been tested on the Salvator-X Soc_id r8a7795 revision
ES1.1 (uses an SPD).
Build Tested:
-------------
ATFW_OPT="LSI=H3 RCAR_DRAM_SPLIT=1 RCAR_LOSSY_ENABLE=1"
MBEDTLS_DIR=$mbedtls
$ make clean bl2 bl31 rcar PLAT=rcar ${ATFW_OPT} SPD=opteed
Other dependencies:
------------------
* mbed_tls:
git@github.com:ARMmbed/mbedtls.git [devel]
Merge: 68dbc94 f34a4c1
Author: Simon Butcher <simon.butcher@arm.com>
Date: Thu Aug 30 00:57:28 2018 +0100
* optee_os:
https://github.com/BayLibre/optee_os
Until it gets merged into OP-TEE, the port requires Renesas' Trusted
Environment with a modification to support power management.
Author: Jorge Ramirez-Ortiz <jramirez@baylibre.com>
Date: Thu Aug 30 16:49:49 2018 +0200
plat-rcar: cpu-suspend: handle the power level
Signed-off-by: Jorge Ramirez-Ortiz <jramirez@baylibre.com>
* u-boot:
The port has beent tested using mainline uboot.
Author: Fabio Estevam <festevam@gmail.com>
Date: Tue Sep 4 10:23:12 2018 -0300
*linux:
The port has beent tested using mainline kernel.
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun Sep 16 11:52:37 2018 -0700
Linux 4.19-rc4
Overview
---------
BOOTROM starts the cpu at EL3; In this port BL2 will therefore be entered
at this exception level (the Renesas' ATF reference tree [1] resets into
EL1 before entering BL2 - see its bl2.ld.S)
BL2 initializes DDR (and i2c to talk to the PMIC on some platforms)
before determining the boot reason (cold or warm).
During suspend all CPUs are switched off and the DDR is put in
backup mode (some kind of self-refresh mode). This means that BL2 is
always entered in a cold boot scenario.
Once BL2 boots, it determines the boot reason, writes it to shared
memory (BOOT_KIND_BASE) together with the BL31 parameters
(PARAMS_BASE) and jumps to BL31.
To all effects, BL31 is as if it is being entered in reset mode since
it still needs to initialize the rest of the cores; this is the reason
behind using direct shared memory access to BOOT_KIND_BASE and
PARAMS_BASE instead of using registers to get to those locations (see
el3_common_macros.S and bl31_entrypoint.S for the RESET_TO_BL31 use
case).
Depending on the boot reason BL31 initializes the rest of the cores:
in case of suspend, it uses a MBOX memory region to recover the
program counters.
[1] https://github.com/renesas-rcar/arm-trusted-firmware
Tests
-----
* cpuidle
-------
enable kernel's cpuidle arm_idle driver and boot
* system suspend
--------------
$ cat suspend.sh
#!/bin/bash
i2cset -f -y 7 0x30 0x20 0x0F
read -p "Switch off SW23 and press return " foo
echo mem > /sys/power/state
* cpu hotplug:
------------
$ cat offline.sh
#!/bin/bash
nbr=$1
echo 0 > /sys/devices/system/cpu/cpu$nbr/online
printf "ONLINE: " && cat /sys/devices/system/cpu/online
printf "OFFLINE: " && cat /sys/devices/system/cpu/offline
$ cat online.sh
#!/bin/bash
nbr=$1
echo 1 > /sys/devices/system/cpu/cpu$nbr/online
printf "ONLINE: " && cat /sys/devices/system/cpu/online
printf "OFFLINE: " && cat /sys/devices/system/cpu/offline
Signed-off-by: ldts <jramirez@baylibre.com>
Marek Vasut
Sergii Boryshchenko
Antonio Nino Diaz
ldts
Jorge Ramirez-Ortiz