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+Renesas R-Car
+=============
+
+"R-Car" is the nickname for Renesas' system-on-chip (SoC) family for
+car information systems designed for the next-generation of automotive
+computing for the age of autonomous vehicles.
+
+The scalable R-Car hardware platform and flexible software platform
+cover the full product range, from the premium class to the entry
+level. Plug-ins are available for multiple open-source software tools.
+
+
+Renesas R-Car Gen3 evaluation boards:
+-------------------------------------
+
++------------+-----------------+-----------------------------+
+| | Standard | Low Cost Boards (LCB) |
++============+=================+=============================+
+| R-Car H3 | - Salvator-X | - R-Car Starter Kit Premier |
+| | - Salvator-XS | |
++------------+-----------------+-----------------------------+
+| R-Car M3-W | - Salvator-X | |
+| | - Salvator-XS | - R-Car Starter Kit Pro |
++------------+-----------------+-----------------------------+
+| R-Car M3-N | - Salvator-X | |
+| | - Salvator-XS | |
++------------+-----------------+-----------------------------+
+| R-Car V3M | - Eagle | - Starter Kit |
++------------+-----------------+-----------------------------+
+| R-Car V3H | - Condor | - Starter Kit |
++------------+-----------------+-----------------------------+
+| R-Car D3 | - Draak | |
++------------+-----------------+-----------------------------+
+
+`boards info <https://elinux.org/R-Car>`__
+
+The current TF-A port has been tested on the R-Car H3 Salvator-X
+Soc_id r8a7795 revision ES1.1 (uses a Secure Payload Dispatcher)
+
+
+::
+
+ ARM CA57 (ARMv8) 1.5 GHz quad core, with NEON/VFPv4, L1$ I/D
+ 48K/32K, L2$ 2MB
+ ARM CA53 (ARMv8) 1.2 GHz quad core, with NEON/VFPv4, L1$ I/D 32K/32K,
+ L2$ 512K
+ Memory controller for LPDDR4-3200 4GB in 2 channels, each 64-bit wide
+ Two- and three-dimensional graphics engines,
+ Video processing units,
+ 3 channels Display Output,
+ 6 channels Video Input,
+ SD card host interface,
+ USB3.0 and USB2.0 interfaces,
+ CAN interfaces
+ Ethernet AVB
+ PCI Express Interfaces
+ Memories
+ INTERNAL 384KB SYSTEM RAM
+ DDR 4 GB LPDDR4
+ HYPERFLASH 64 MB HYPER FLASH (512 MBITS, 160 MHZ, 320 MBYTES/S)
+ QSPI FLASH 16MB QSPI (128 MBITS,80 MHZ,80 MBYTES/S)1 HEADER QSPI
+ MODULE
+ EMMC 32 GB EMMC (HS400 240 MBYTES/S)
+ MICROSD-CARD SLOT (SDR104 100 MBYTES/S)
+
+
+Overview
+--------
+On the rcar-gen3 the BOOTROM starts the cpu at EL3; for 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 on some platforms i2c to interface to the
+PMIC) 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
+
+
+How to build
+------------
+
+The TF-A build options depend on the target board so you will have to
+refer to those specific instructions. What follows is customized to
+the H3 SiP Salvator-X development system used in this port.
+
+Build Tested:
+~~~~~~~~~~~~~
+RCAR_OPT="LSI=H3 RCAR_DRAM_SPLIT=1 RCAR_LOSSY_ENABLE=1"
+MBEDTLS_DIR=$mbedtls_src
+
+$ MBEDTLS_DIR=$mbedtls_src_tree make clean bl2 bl31 rcar_layout_tool \
+PLAT=rcar ${RCAR_OPT} SPD=opteed
+
+System Tested:
+~~~~~~~~~~~~~~
+* mbed_tls:
+ git@github.com:ARMmbed/mbedtls.git [devel]
+
+ commit 552754a6ee82bab25d1bdf28c8261a4518e65e4d
+ Merge: 68dbc94 f34a4c1
+ Author: Simon Butcher <simon.butcher@arm.com>
+ Date: Thu Aug 30 00:57:28 2018 +0100
+
+* optee_os:
+ https://github.com/BayLibre/optee_os
+
+ Until it gets merged into OP-TEE, the port requires Renesas'
+ Trusted Environment with a modification to support power
+ management.
+ commit 80105192cba9e704ebe8df7ab84095edc2922f84
+
+ Author: Jorge Ramirez-Ortiz <jramirez@baylibre.com>
+ Date: Thu Aug 30 16:49:49 2018 +0200
+ plat-rcar: cpu-suspend: handle the power level
+ Signed-off-by: Jorge Ramirez-Ortiz <jramirez@baylibre.com>
+
+* u-boot:
+ The port has beent tested using mainline uboot.
+
+ commit 4cdeda511f8037015b568396e6dcc3d8fb41e8c0
+ Author: Fabio Estevam <festevam@gmail.com>
+ Date: Tue Sep 4 10:23:12 2018 -0300
+
+* linux:
+ The port has beent tested using mainline kernel.
+
+ commit 7876320f88802b22d4e2daf7eb027dd14175a0f8
+ Author: Linus Torvalds <torvalds@linux-foundation.org>
+ Date: Sun Sep 16 11:52:37 2018 -0700
+ Linux 4.19-rc4
+
+TF-A Build Procedure
+~~~~~~~~~~~~~~~~~~~~
+
+- Fetch all the above 4 repositories.
+
+- Prepare the AARCH64 toolchain.
+
+- Build u-boot using r8a7795_salvator-x_defconfig.
+ Result: u-boot-elf.srec
+
+.. code:: bash
+
+ make CROSS_COMPILE=aarch64-linux-gnu-
+ r8a7795_salvator-x_defconfig
+
+ make CROSS_COMPILE=aarch64-linux-gnu-
+
+- Build atf
+ Result: bootparam_sa0.srec, cert_header_sa6.srec, bl2.srec, bl31.srec
+
+.. code:: bash
+
+ RCAR_OPT="LSI=H3 RCAR_DRAM_SPLIT=1 RCAR_LOSSY_ENABLE=1"
+
+ MBEDTLS_DIR=$mbedtls_src_tree make clean bl2 bl31 rcar \
+ PLAT=rcar ${RCAR_OPT} SPD=opteed
+
+- Build optee-os
+ Result: tee.srec
+
+.. code:: bash
+
+ make -j8 PLATFORM="rcar" CFG_ARM64_core=y
+
+Install Procedure
+~~~~~~~~~~~~~~~~~
+
+- Boot the board in Mini-monitor mode and enable access to the
+ Hyperflash.
+
+
+- Use the XSL2 Mini-monitor utility to accept all the SREC ascii
+ transfers over serial.
+
+
+Boot trace
+----------
+
+Notice that BL31 traces are not accessible via the console and that in
+order to verbose the BL2 output you will have to compile TF-A with
+LOG_LEVEL=50 and DEBUG=1
+
+::
+
+ Initial Program Loader(CA57) Rev.1.0.22
+ NOTICE: BL2: PRR is R-Car H3 Ver.1.1
+ NOTICE: BL2: Board is Salvator-X Rev.1.0
+ NOTICE: BL2: Boot device is HyperFlash(80MHz)
+ NOTICE: BL2: LCM state is CM
+ NOTICE: AVS setting succeeded. DVFS_SetVID=0x53
+ NOTICE: BL2: DDR1600(rev.0.33)NOTICE: [COLD_BOOT]NOTICE: ..0
+ NOTICE: BL2: DRAM Split is 4ch
+ NOTICE: BL2: QoS is default setting(rev.0.37)
+ NOTICE: BL2: Lossy Decomp areas
+ NOTICE: Entry 0: DCMPAREACRAx:0x80000540 DCMPAREACRBx:0x570
+ NOTICE: Entry 1: DCMPAREACRAx:0x40000000 DCMPAREACRBx:0x0
+ NOTICE: Entry 2: DCMPAREACRAx:0x20000000 DCMPAREACRBx:0x0
+ NOTICE: BL2: v2.0(release):v2.0-rc0-32-gbcda69a
+ NOTICE: BL2: Built : 16:41:23, Oct 2 2018
+ NOTICE: BL2: Normal boot
+ INFO: BL2: Doing platform setup
+ INFO: BL2: Loading image id 3
+ NOTICE: BL2: dst=0xe6322000 src=0x8180000 len=512(0x200)
+ NOTICE: BL2: dst=0x43f00000 src=0x8180400 len=6144(0x1800)
+ WARNING: r-car ignoring the BL31 size from certificate,using
+ RCAR_TRUSTED_SRAM_SIZE instead
+ INFO: Loading image id=3 at address 0x44000000
+ NOTICE: rcar_file_len: len: 0x0003e000
+ NOTICE: BL2: dst=0x44000000 src=0x81c0000 len=253952(0x3e000)
+ INFO: Image id=3 loaded: 0x44000000 - 0x4403e000
+ INFO: BL2: Loading image id 4
+ INFO: Loading image id=4 at address 0x44100000
+ NOTICE: rcar_file_len: len: 0x00100000
+ NOTICE: BL2: dst=0x44100000 src=0x8200000 len=1048576(0x100000)
+ INFO: Image id=4 loaded: 0x44100000 - 0x44200000
+ INFO: BL2: Loading image id 5
+ INFO: Loading image id=5 at address 0x50000000
+ NOTICE: rcar_file_len: len: 0x00100000
+ NOTICE: BL2: dst=0x50000000 src=0x8640000 len=1048576(0x100000)
+ INFO: Image id=5 loaded: 0x50000000 - 0x50100000
+ NOTICE: BL2: Booting BL31
+ INFO: Entry point address = 0x44000000
+ INFO: SPSR = 0x3cd
+ VERBOSE: Argument #0 = 0xe6325578
+ VERBOSE: Argument #1 = 0x0
+ VERBOSE: Argument #2 = 0x0
+ VERBOSE: Argument #3 = 0x0
+ VERBOSE: Argument #4 = 0x0
+ VERBOSE: Argument #5 = 0x0
+ VERBOSE: Argument #6 = 0x0
+ VERBOSE: Argument #7 = 0x0
+
+
+ U-Boot 2018.09-rc3-00028-g3711616 (Sep 27 2018 - 18:50:24 +0200)
+
+ CPU: Renesas Electronics R8A7795 rev 1.1
+ Model: Renesas Salvator-X board based on r8a7795 ES2.0+
+ DRAM: 3.5 GiB
+ Flash: 64 MiB
+ MMC: sd@ee100000: 0, sd@ee140000: 1, sd@ee160000: 2
+ Loading Environment from MMC... OK
+ In: serial@e6e88000
+ Out: serial@e6e88000
+ Err: serial@e6e88000
+ Net: eth0: ethernet@e6800000
+ Hit any key to stop autoboot: 0
+ =>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 22:56:31 +0000