É possível rodar Linux com menos de 10 MB de RAM?

© 2017 Renesas Electronics Corporation. All rights reserved. BIG IDEAS FOR EVERY SPACEPage 1
É possível rodar Linux
com menos de 10MB de
RAM?
Renesas Electronics Corporation

Renesas RZ microprocessor (MPU) product family
RZ/A Microprocessors
RZ/A1 Linux Support
Summary
AGENDA

S1
SVGA
WXGA
1080p
Segment
Displays
RZ/G1
RZ/A1
4K
R-Car gen3
Synergy S5 & S7
Synergy S3 S3
Synergy S1
MCUs
MPUR-Car gen2
Cortex-M0
Cortex-M4+
Cortex-M4+
Cortex-M4
Cortex-A9
Dual & Quad Cortex-A7
and A15s, plus image
processors, and more
Dual & Quad
Cortex-A7, A15
Dual & Quad Cortex-A53, A57
plus image processors,etc.
RZ/A
Series
MPU
SoC
SoC
S5
S7
R-Car
Gen3
Series
Synergy Platform
• Software
• Microcontrollers
• Tools & Kits
• Solutions
• Gallery
Performance
R-Car
Gen2
Series
RZ/G
Series
RZ/T
RENESAS ARM-BASED MCUS & MPUS

RENESAS RZ FAMILY
RZ/A1H
(10MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1M
(5MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1
Cortex-A9, Single Core
Large Embedded RAM
RZ/A1LU
(3MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1L
(3MB)
400MHz Cortex-A9
1000 DMIPS
Linux, RTOS, bare-metal
H.264, 3D graphics
Linux, Android, QNX
RZ/G1
Multi-Core
Cortex-A7 & A15
Wider memory bus than
RZ/G1N, more flexible
I/O, faster graphics
RZ/G1N, 1.5GHz
Dual Cortex-A15
10500 DMIPS
RZ/G1M, 1.5GHz
Dual Cortex-A15
10500 DMIPS
RZ/G1H, 1.4GHz
Quad Cortex-A15
Quad Cortex-A7
Over 25K DMIPS
Power-
Optimized
Performance-
Optimized
RZ/G1E, 1GHz
Dual Cortex-A7
3800 DMIPS
4-layer board & no
PMIC with RZ/G1C
RZ/G1C, 1GHz
Dual Cortex-A7
3800 DMIPS
BOM Cost-
Optimized
RZ/A1LC
(2MB)
400MHz Cortex-A9
1000 DMIPS

FOR REFERENCE:
GUI RESOLUTIONS BY RENESAS DEVICE
SVGA
800x600
WXGA
1280x800
HD 1080
1920x1080
Segment
Displays
RZ/G1
RZ/A1
Synergy S5 & S7
Synergy S1 & S3
RL78

RZ/A Microprocessors
MPU Performance with MCU Ease of Design

RENESAS RZ/A
RZ/A1H
(10MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1M
(5MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1
Cortex-A9, Single Core
Large Embedded RAM
RZ/A1LU
(3MB)
400MHz Cortex-A9
1000 DMIPS
RZ/A1L
(3MB)
400MHz Cortex-A9
1000 DMIPS
Linux, RTOS, bare-metal
RZ/A1LC
(2MB)
400MHz Cortex-A9
1000 DMIPS
ARM Cortex A class CPU performance
▪ 400MHz ARM Cortex-A9, superscalar core
▪ Up to 1000 DMIPS
Large on-chip integrated RAM size
▪ Internal SRAM covers 2MB-10MB
▪ No need for high speed external DDR DRAM Memory
Simple Board Design
▪ Fewer board layers (simple 4 layer board design)
▪ No need for PMIC (Power Management IC)
Execute in place directly from QSPI flash
▪ No need to load program from flash to RAM
▪ Smaller RAM footprint, efficient RAM usage
Camera and LCD support
▪ Up to 2 independent camera inputs (Analog and Digital)
▪ Up to 2 LCD controllers

RZ/A1 Applications
HMI/GUI
On-chip SRAM and 400MHz Cortex
A9 Core for smooth High Res. HMIs
- Home Appliance
- Medical Panels
- Industrial HMI
- Commercial Kitchen
Camera Applications
Support for Analog and digital
camera interfaces
- Backup Cameras
- Scan Engines (QR Code)
- Camera modules (face and body
detection)
Connectivity
Ethernet and SDHC interface for
WiFi
- Routers
- Connected Power Meters
Thermal Imaging
Connected Power/Energy Meter

RENESAS RZ/A1 VALUE PROPOSITION
The performance of an MPU with the design simplicity of an MCU
Simple Power Delivery
2 chip solution
Fewer Board Layers
Simpler Routing
Lower EMI
Easy Memory Procurement
Lower BOM

HIGHLY OPTIMIZED MEMORY ARCHITECTURE
32KB
SDRAM QSPI
SRAM SRAM SRAM SRAM
128 bit x4 Crossbar Switch Fabric
NOR Flash
Highly parallel
multi-mastering
switch fabric
Predictive caching and out-of-
order execution minimizes wait
states due to cache misses
x4 parallel accesses to
SRAM possible
LCD
Controller
(2)
ARM
Cortex-A9
3 levels of
caching for
serial flash
2 levels of
caching for
SDRAM and
parallel flash
L1
L2
32KB
128KB
with Cache
QSPI
Controller
LCD
Controller
(1)
I D

© 2017 Renesas Electronics Corporation. All rights reserved. CONFIDENTIAL Page 11
RZ/A1 Devices

© 2017 Renesas Electronics Corporation. All rights reserved. Page 12
Package Line-Up
Page 12
176 BGA 176 QFP 208 QFP 256 BGA 256 QFP 324 BGA
Pitch (mm) 0.5 0.5 0.5 0.5 0.4 0.8
Size (mm x mm) 8 x 8 24 x 24 28 x 28 11 x 11 28 x 28 19 x 19
RZ/A1H ✓ ✓ ✓
RZ/A1M ✓ ✓ ✓
RZ/A1L ✓ ✓ ✓
RZ/A1LU ✓ ✓ ✓
RZ/A1LC ✓

RZ/A1H AND RZ/A1M BLOCK DIAGRAM
Enhanced Graphics and Camera
Audio and Sound
(Optional)
Security
Variety of Interfaces and Protocols
10MB/5MB On-Chip RAM
RZ/A1H,M, 400MHz
Cortex-A9
1000 DMIPS

Video Display Controller & Camera
Audio SCUX Unit Variety of Interfaces and Protocols
3MB On-Chip RAM
RZ/A1L BLOCK DIAGRAM
RZ/A1L 400MHz
Cortex-A9
1000 DMIPS

RZ/A1LU BLOCK DIAGRAM
JPEG Engine
(Optional)
Security
Ethernet AVB
3MB On-Chip RAM
RZ/A1LU, 400MHz
Cortex-A9
1000 DMIPS

RZ/A1LC (2MB SRAM)
Feature RZ/A1LU RZ/A1L RZ/A1LC
SRAM size 3MB 3MB 2MB
JPEG
Compression
Engine
Yes No No
Ethernet AVB Yes No No
Dual Data
Rate QSPI
Yes No No
Enhanced
(Optional)
Security
Yes No No
Feature RZ/A1LU RZ/A1L RZ/A1LC
IEBus No Yes No
LIN Master No Yes No
MOST50 No Yes No
Low Cost, 2MB RZ/A1LC – 176pin BGA Only Fewer features than both RZ/A1L and RZ/A1LU
RZ/A1LC, 400MHz
Cortex-A9
1000 DMIPS

Quiz
▪Sistemas com MPU costumam ser complexos por depender de
barramentos paralelos de alta velocidade. A família RZA1 tem
uma vantagem trazendo até 10MB de RAM embutida. Qual é o
tamanho do barramento interno para esta memória?

Quiz
Resp.: 128bits

RZ/A1 Tools and RTOS support

RZ/A1 TOOL-CHAIN
Tool Category
IDE
IAR
EWARM
ARM DS-5 e2studio
Green Hills
MULTI
Compiler IAR ARM DS-5, GCC GCC Green Hills
Debugger SW IAR ARM DS-5 Segger GDB Green Hills
Debug Probes I-Jet, Jlink ULINK2, DSTREAM J-Link Green Hills Probe
Boards RSK, GENMAI RSK, GENMAI RSK GENMAI

REAL TIME OS SUPPORT
Vendor Tool
Express Logic ThreadX
FreeRTOS FreeRTOS
ARM Mbed OS
ARM RTX
Rowebots Unison RTOS
Micrium uC/OS-III

RZ/A1 Development Kits
Board Name
Renesas Starter Kit (RZ-RSK+) – RZ/A1H
YR0K77210S011BE – with LCD Panel
YR0K77210S009BE – without LCD Panel
Stream it!
YSTREAM-IT-RZ-V2
GR-PEACH mBED Board – RZ/A1H
YGRPEACHFULL - Ethernet
YGRPEACHNORMAL – with connector for WiFi module
Most broadly
supported KIT
Mbed development environment.
Works with Adruino Shields
FreeRTOS based Kit with Camera
Streaming and Display

RZ/A1 Software Development Kit https://www.renesas.com/en-us/products/software-tools/software-os-
middleware-driver/software-package/rza1-software-development-kit.html
CMSIS-RTOS RTX Kit
FreeRTOS Kit with TES Guiliani HMI
https://www.renesas.com/en-us/products/software-tools/software-os-middleware-driver/software-package/rza1-
software-development-kit-free-rtos.html
“RZ/A Software Package is an HMI software development kit for the RZ/A1 that provides
consistent support for camera input, LCD output, and image adjustment. It consists of
device drivers, middleware, and sample programs for the RZ/A1 in a single package.”
1
2

GR-PEACH ARM mBed Board for IoT
GR PEACH
REA Ordering PN: YGRPEACHFULL
First (and only) Cortex A class MPU ARM mBED Board
GR PEACH Audio Camera Shield
REA Ordering PN: YGRPEACHAUDIOCAMERASHIELD
GR PEACH LCD Shield
REA Ordering PN: YGRPEACHLCDSHIELD
•Arduino form-factor
• Compatible with a wide range of commercially
available shields
• Built-in USB drag 'n' drop FLASH programmer
•mbed.org Developer Website
• Online Compiler
• High level C/C++ SDK
• Active developer community
Available through normal Renesas Sales Channels
https://developer.mbed.org/platforms/Renesas-GR-PEACH/
Lots of sample programs
available

© 2017 Renesas Electronics Corporation. All rights reserved.
Quiz
Page 26
▪A família RZA1 conta com um Cortex-A9 @ 400MHz. O usuário
pode se beneficiar deste poder de processamento utilizando um
RTOS. Quais os três RTOS gratuitos que estão portados para
este item?

Quiz
Page 27
este item?
Resp.: CMSIS-RTOS RTX, FreeRTOS e Mbed OS

Quiz
Page 28
este item?
Resp.: CMSIS-RTOS RTX, FreeRTOS e Mbed OS

RZ/A1 Linux Support

Execute-in-Place (XIP) Linux with Renesas RZ/A1
Timesys.com (URL)
Renesas GitHub (URL)
https://youtu.be/Rbsi8aTskxI
The short 4 minute video covers
a) What is XIP Linux
b) How you can achieve Boot to Application under 3 seconds
c) WiFi Gateway Demo on XIP Linux
Sample Code at RenesasRulz (URL)
(Community Forum)
Linux 4.9 and 4.14 BSP now available for RZ/A1
http://www.elinux.org/RZ-A

About XIP Linux on RZ/A1 MPU
➢XIP Linux is just regular Linux with kernel and file system components that reside in QSPI instead of being
copied to RAM
➢Very small kernel SRAM footprint can be achieved
➢Just under 1.5MB SRAM to run (in a minimum implementation)
➢ Additional SRAM consumed for other drivers’ and applications’ r/w memory plus application’s graphics buffer/s
➢AXFS works in concert w/ XIP kernel to keep SRAM usage low
➢MMU used to map QSPI memory to application's virtual memory space without being copied to RAM first
➢Each file is broken into 4KB pages and each page can be run in XIP or RAM
➢ High granularity in how file memory can be allocated in physical memory

Linux (Standard SDRAM Architecture)
Block Diagram of RZ/A1
SDRAM Linux implementation
RZ/A1
On-Chip RAM
Flash
SDRAM
Kernel & FS
Kernel & FS
Executes from
SDRAM

RZ/A1 Linux (XIP from QSPI Architecture)
QSPI Flash
FS Application Data
(r/w)
RZ/A1
On-Chip RAM KernelKernel Code
(r/o) Executes the kernel
from QSPI.
AXFS File System (FS) executes
from QSPI.
Portions copied to on-chip SRAM as
needed.
Enables XIP in all RZ/A1 devices.
Kernel Data (r/w)
Boot Loader (U-Boot)
File SystemFS Application
Code (r/o)
3MB (RZ/A1L)
5MB (RZ/A1M)
10MB (RZ/A1H)

Very Fast Boot-Up with XIP Linux on RZ/A1
Sub-five-second Linux boot
Software Code Payload Need Not Be Copied from Flash to External Memory
Up to 30 seconds on competing devices using
traditional DRAM execution
vs.
3, 2, 1, BOOT……………..!
LCD Output Screen
Example below: Boot to a multiple application GUI launcher screen

Support for Various Graphics Frameworks
Crank Software Storyboard Suite
▪ Optimized for embedded systems
▪ Very responsive performance
▪ Superior GUI design environment
DirectFB
▪ Direct frame buffer access
▪ Very efficient - does not require copying all graphics from QSPI to SRAM in order to run
▪ Very responsive performance with minimal SRAM footprint
Qt
▪ Industry standard for large memory systems
▪ Can be used in XIP environment, as well

Typical XIP Linux SRAM Usage (est.)
Component SRAM (MB) est.* Comments
Kernel 1.5 Minimum kernel includes:
- MTU2 Timer (kernel time keeper). SCIF2 - 1 ch (serial console)
- RIIC - 1 ch (keeps LEDs blinking). AXFS file system
File System Apps 0.05 Per app to get it started
USB 0.30 Need RAM size to read thumb drive
(50KB code, 250KB buffer)
Ethernet 0.20
WiFi 0.50 Silex - 400 KB, GP - 50 KB
WiFi encryption 0.00 Supplicant - user-space app
Gainspan gets rid of this 0.25
Audio 0.25 Sound system in Linux
Qt 0.85 Estimation assumes 10x10 KB graphics widgets.
Must also account for LCD buffer.
Crank TBD n/a
Direct FB 0.35 Estimation assumes 10x10 KB graphics widgets.
Must also account for LCD buffer. No need to double buffer (don't have
to hold everything in RAM - can use pointers to QSPI).
*Estimates do not include LCD buffer space Preliminary Pending Further Benchmarking

RZ/A1 Linux – Example Demo

XIP Linux DirectFB Graphics Demo
Demo selector & animation apps
▪ Running from QSPI in XIP mode
Graphics content
▪ Pulled from QSPI flash in real-time
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77 81 85 89 93
CPU Utilization
DirectFB Animation Video
System resources used
• Average CPU utilization = 12%
• QSPI memory used = 8.2 MB
• Max SRAM = 2.79 MB (fast animation)
(kernel & app.) 2.72 MB (slow animation)
• SRAM (frame buffers) = 1.5 MB
• WVGA (800x480 @ 16 bpp)
• Max SRAM (total) = 4.29 MB (fast animation)
4.22 MB (slow animation)
• Drivers used
• MTU2 Timer (kernel time keeper), UART (for serial
communication), RIIC - 1 ch (keeps LEDs blinking), AXFS
file system, LCD (VDC5), Touchscreen (I2C)

DirectFB “Sonic” Demo Memory Layout
Demo would run in RZ/A1M with 0.7 MB
of SRAM headroom
QSPI Flash
FS Application Data
(r/w)
RZ/A1
On-Chip RAM
Kernel
(4.0 MB)
XIP kernel
AXFS File System
• DirectFB (0.5 MB)
• RootFS (1.5 MB)
• Graphic Images (2.2 MB)
o Background (1.5MB)
o Sonic sprites (0.7 MB)
o Buttons (0.05 MB)
Kernel Data (r/w)
Boot Loader (U-Boot)
File System
(4.2 MB)5MB (RZ/A1M)
2.79 MB
1.5 MB Frame Buffers
4.29 MB
0.71 MB

H.264 Running in XIP Linux
 Consilient H.264 demo
(Software IP)
● XIP kernel, standard FS
● Adds less than 1 MB of SRAM
overhead to QVGA system
Resolution
Frame Rate
(Linux)
SRAM Overhead*
H.264
Encode
QVGA
(320 @ 240) 30 fps 0.8 MB
VGA
(640 x 480) 7 fps 2.5 MB
H.264
Decode
QVGA
(320 @ 240) 90 fps 0.8 MB
VGA
(640 x 480) 35 fps 2.5 MB
SDCard
Decoder
Encoder
*SRAM overhead includes
o H.264 algorithm state memory
o H.264 algorithm program
o 2 Frame capture buffers (YUV 420) for encoder
o 2 Frame display buffers (YUV 420) for decoder

BSP Build Environment
Page 41
Features
▪ A single build script (build.sh) is used to perform all operations (configure, build, download, etc...)
▪ u-boot and kernel source are hosted individually on github.com (automatically downloaded by build script)
▪ Includes Sample applications
▪ Includes testing documentation (doc/testing/*).
▪ Sample Device Trees Examples (arch/arm/boot/dts/r7s72100-rskrza1_testing.dts)
▪ List of Renesas BSP drivers (doc/kernel_drivers.txt)
▪ Contains a ‘update’ command to pull in repository updates
▪ Buildroot Long Term Support (LTS) updates are maintained (for 1 year)
▪ Contains a tool to make creating your own custom board BSP easier
▪ Uses Segger J-Link to download images to boards
Board Selection Screen

Online Resources
Page 42
Application Notes, Pre-Built Binaries (RSK, Stream it), BSP Porting Guides, Demos, Forum
▪ https://renesasrulz.com/rz/m/files_linux
▪ https://renesasrulz.com/rz/f/rz---forum
Build Instructions and Required Board Modifications
▪ https://elinux.org/RZ-A
▪ Supported boards: RSK, Stream it, Genmai, GR-PEACH, YLCDRZA1H
Github Repositories
▪ https://github.com/renesas-rz

RZ/A1 Linux BSP
Page 43
Linux 4.9
▪ Linux-4.9.x kernel + LTSI + longterm stable updates
▪ u-boot-2017.05
▪ Buildroot-2016.08, Buildroot-2017.02.x (LTS)
▪ PREEMPT_RT branch
▪ https://github.com/renesas-rz/rza_linux-4.9_bsp
Linux 4.14
▪ Linux-4.14.x kernel + longterm stable updates
▪ u-boot-2017.05
▪ Buildroot-2017.02.x (LTS)
▪ https://github.com/renesas-rz/rza_linux-4.14_bsp

RZ/A1 Linux BSP
Page 44
Linux 3.14 (EOL)
▪ Linux 3.14.79 (final)
▪ u-boot-2015.01
▪ Buildroot-2014.05, Buildroot-2016.08
▪ No more BSP releases (EOL by kernel community)
▪ Github repositories will only be updated with bug fixes

System Configuration Diagram
Bootloader u-boot
SCUX, SSI, SPDIF,
SDG, CDROMDEC
Audio
VDC5, JCU, CEU, R-GPVG,
DVDEC, IMR, DISCOM, PFV
Graphics
MTU2, OSTM, RTC,
WDT, MotorPWM
Timers
USB(HOST/FUNC), SD/SDIO/MMC, SCI/SCIF,
ETHER, SPI, I2C, CAN, LIN, EtherAVB, MOST
Connectivity
On-chip RAM, BSC,
SPIBSC, NAND
Memory
DMAC, ADC,
CPG (LPM)
System
System calls
Process management
Timer management
Interrupt
management
Architecture
dependent
Memory
management
Memory manager
Device drivers
Block type Character type Network type
Linux Kernel
File system
Device management
Protocol stack
Subsystems
Userland
User application
Buildroot
Libraries (system library, user library)
System commands, system server
RZ/A1 hardware IP
White text: Supported
Light blue text: Unsupported
External hardware
Linux kernel
Overview of RZ/A1 XIP Linux

General Diagram
Page 46
Support
 Application notes
 Demo programs
 Q&A (community-based)
Internet
Host environment for development
 Ubuntu 14.04
Target board
 RSK+ for RZ/A1H
Development tool
 J-LINK Lite
(flash programming tool)
(JTAG debugging tool)
Source code
Linux Kernel
U-Boot
Buildroot
RZ/A1 XIP Linux BSP
Patch files, build scripts, etc.
GCC ToolChain
Linaro ToolChain
GCC/binutils/uclibc, etc.
Binary programs
User applications
Lineo Solutions, Inc. provides consulting,
customizing, and support services for
RZ/A1 Linux (fee-based).
eLinux

Supplementary Explanation
 Why are there multiple versions, 3.14, 4.9, 4.14, and so on? Which version should I use?
✓ Each version of the Linux kernel has its own maintenance period,
1)
and it is no longer maintained once that period
elapses. The maintenance period of 3.14 has already expired, to migration to 4.9 is underway. We are also preparing a
4.14 version that will support the latest kernel requests.
✓ Compared with current support for 3.14, there are fewer drivers and application notes for 4.9 and 4.14. Renesas
recommends 4.9, but in light of the above considerations you may wish to select 3.14.
 Are RZ/A1L, RZ/A1LU, and RZ/A1LC MCUs supported?
✓ These MCUs are supported by 3.14, 4.9, and 4.14. Stream It! Ver. 2 is available as a migration example.
 Should I use the release version from RenesasRulz or the latest version available on Github?
✓ The release version on RenesasRulz is a snapshot intended for demo and evaluation use.
✓ For prototyping and development, use the latest version from Github.
1) For details on Linux kernel categories and maintenance periods, refer to the link below. Note that the maintenance
period of longterm releases of version 4.4 and after has been extended from two years to six years.
https://www.kernel.org/category/releases.html

Support for Peripheral Functions (1)
1) Connect EEPROM, port expander, etc.
2) Connect to PMOD connector. (ST7735FB driver supplied with Linux can be used but is unsupported.)
3) MAX9856 is used as an external codec with the MAX9856 driver supplied with Linux.
4) FT5x06 is used as a touch panel with the FT5x06 driver supplied with Linux.
●: Supported.
×: Unsupported.
Peripheral Function Driver Overview Linux-3.14 Linux-4.9 Linux-4.14
Linux Kernel Linux Kernel ● ● ●
LinuxDriver
QSPI flash MTD driver supplied with Linux is used. ×4 mode and dual-chip configuration support, R yes, W no. ● ● ●
NOR flash MTD driver supplied with Linux is used. NOR flash R/W yes. ● ● ●
Serial (SCI/SCIF) Conforms to Linux-standard driver interface. 300 to 115,200 bps support (300 and 600 bps not usable with RSK). ● ● ●
I2C Conforms to Linux-standard driver interface. 100 and 400 kbps support. 10-bit addresses not supported.
(1
● ● ●
SPI (RSPI) Conforms to Linux-standard driver interface.
(2
● ● ●
Ethernet Conforms to Linux-standard driver interface. 10/100 Mbps, half-duplex/full-duplex support. ● ● ●
USB host Conforms to Linux-standard driver interface. HID devices and mass storage class support. ● ● ●
USB function Conforms to Linux-standard driver interface. CDC Ethernet gadget support. ● ● ●
SDHC/SDIO Conforms to Linux-standard driver interface. Plug/unplug detection support. ● ● ●
MMC Conforms to Linux-standard driver interface. ● ● ●
Audio (SSIF/SCUX) Conforms to Linux-standard driver interface (ALSA). Play/record/sampling rate conversion support.
(3
● ● ●
Display (VDC5/LVDS) Conforms to Linux-standard driver interface (LinuxFB). (Support for display function only.)
(4
● ● ●
DMAC Conforms to Linux-standard driver interface (DMAEngine). SDHC/SDIO, MMC, and audio driver support. ● ● ●
RTC Conforms to Linux-standard driver interface. ● ● ●
L2CC PL310 driver supplied with Linux is used. ● ● ●
Functions and Features of RZ/A1 XIP Linux

Support for Peripheral Functions (2)
● …対応済み
× …未対応
LinuxDriver
PWM (MTU2) Sample driver. Outputs square waves with specified period and duty ratio on MTU2 channel 3.
(5
● X X
CAN Sample driver. Conforms to Linux-standard driver interface. Supports can-utils package.
(5
● ● ●
GPIO Sample driver. Conforms to Linux-standard driver interface (GPIO). Port I/O support; interrupts not supported. ● ● ●
ADC Sample driver. Conforms to Linux-standard driver interface (IIO). ● ● ●
Peripheral Function Sample Program Overview Linux-3.14 Linux-4.9 Linux-4.14
UserApp
Sample
CEU (Camera) Sample program. Conforms to Linux-standard driver interface (V4L2). OV7670 camera support.
(5
● X X
JCU Sample program. JPEG decoding support using dedicated library (librzjpeg). Uses UIO. ● X X
Boot Loader Boot loader ● ● ●
LinuxDriver
Serial (SCI/SCIF) Uses driver supplied with U-Boot. Fixed at 115,200 bps. ● ● ●
Ethernet Uses driver interface supplied with U-Boot. 10/100 Mbps, half-duplex/full-duplex support. ● ● ●
I2C Uses driver interface supplied with U-Boot. 100 and 400 kbps support.
(6
● ● ●
USB host Uses driver interface supplied with U-Boot. Mass storage class support. ● ● ●
NOR flash Uses driver supplied with U-Boot. Read/write/erase support. ● ● ●
QSPI flash Uses driver interface supplied with U-Boot. Read/write/erase support; ×1/×4 mode, dual-chip support. ● ● ●
6) Connection to EEPROM, port expander, etc.
5) To run this program on an RSK board, modification of the board or a special interface is necessary.
Functions and Features of RZ/A1 XIP Linux

RZ/A1 Applications Support

GUI/HMI (HUMAN MACHINE INTERFACE)
Internal SRAM for frame buffers, layering of graphics /
images / text, 2D graphics engine (OpenVG, RGA)
Example HMI Tools supported –
• TES Guiliani on FreeRTOS
• GUIX on ThreadX
• Crank Software on XIP Linux
• Crank Software (using 2D Engine) on FreeRTOS
Ongoing Promotions –
• TES Guiliani pre-paid License
Misc. Demos –
• TES Guiliani on Stream it! ver 2.0 and RZ-RSK+
• GUIX on RZ-RSK+ and High Resolution Embedded GUI Kit
• Crank Software with 2D Gfx on RZ-RSK+
http://www.cranksoftware.com/demo_i
mage/rza1h
https://www.youtube.com/watch?v=
msiNnzLVxMM
https://www.youtube.com/watch?v=Zqk06wKB8Gs

CAMERAS SUPPORT
FOR SCANNERS, GENERAL PURPOSE VIDEO, AND EMBEDDED VISION
Strengths
• Single/ Dual Camera Support
• Cortex A9 Core for Image Processing
Tools
• Okao (Omron) Software running on their own eval board
Demos
• Backup Camera on RZ-RSK
• Streaming video on Stream it! kit
• Face Detection, Age/Gender Identification on Omron
evaluation module
Omron HVC-P2 camera module with RZ/A
Evaluation of Okao software solution
https://www.youtube.com/wa
tch?v=CCGNSfqHv1Q

JCU (JPEG Codec Unit) IP
Codec support
• Motion JPEG support in hardware
Demos
• Embedded Video Playback
• Software H.264 (Consilient Tech.)
Module Resolution FPS RAM
H.264 Encode
QVGA 40 1.3 MB
VGA 10 3.7 MB
H.264 Decode
QVGA 90 1.1 MB
VGA 35 2.5 MB
VIDEO PROCESSING

Features
▪ ARM Cortex-A9 superscalar architecture with up to
10 MB on-chip RAM with 128b wide x4 memory bus
▪ XIP from QSPI memory
▪ RTOS, bare metal and Linux Support
▪ Drive up to 2 independent LCD controllers
▪ Up to 2 independent camera inputs
Benefits
▪ Eliminate DDR DRAM entirely
▪ Performance of an MPU with the platform simplicity of
an MCU style design
▪ Lower BOM cost
▪ Accelerate time-to-market
RZ/A MPUs – SUMMARY SLIDE

Grande Prêmio

Quiz
▪O Linux XIP possibilita o uso do Linux num sistema equipado
com apenas 3MB RAM. Na implementação do Linux XIP do
RZA1, quanto de RAM é alocado para o Linux Kernel?

Quiz
Page 57
Resp.: 1.5M

Quiz
Page 58
Resp.: 1.5M

Thank You!

É possível rodar Linux com menos de 10 MB de RAM?

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É possível rodar Linux com menos de 10 MB de RAM?