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Overview
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redpesk OS releases
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Security updates
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Application Framework Manager
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Application Framework Binder
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APIs & Services
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Security manager
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Trusted Boot
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Recovery features
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redpak
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Minimal image
- Reduce image size
- Optimizing boot time
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kernel fragments description
- Introduction to Linux Kernel Configuration
- 01 Disable IPC, Timers and Audit
- 02 Disable Kconfig, Scheduler and Initrd
- 03 Disable Perf, Profiling and Errata
- 04 Disable EFI, Power Management Debug and Energy Model
- 05 Disable Schedutil, CPUFreq Governors and Virtualization
- 06 Disable Kprobes and Jump Labels
- 07 Disable GCC Plugins and Function Alignment
- 08 Disable Partition Parsers
- 09 Enable Inline Spinlocks and Kernel Operations
- 10 Disable Swap, Memory Hotplug and KSM
- 11 Disable Networking IPv4, IPv6, Netfilter
- 12 Disable SCTP, VLAN, TIPC, BATMAN
- 13 Disable Wireless, Bluetooth, CAN and RFKILL
- 14 Disable PCI and Firmware
- 15 Disable GNSS and ProcEvents
- 16 Disable Block Storage NBD and AoE
- 17 Disable EEPROM and Misc Drivers
- 18 Disable Network Device Drivers
- 19 Disable PHY Drivers
- 20 Disable PPP, WLAN Coexistence, and Failover
- 21 Disable Input Devices
- 22 Disable Serial, TTY and TPM
- 23 Disable I2C, Power and Sensor Drivers
- 24 Disable MFD, Display and Media Drivers
- 25 Disable USB, Sound, RTC and VirtIO
- 26 Disable Filesystem Encodings and Compatibility
- 27 Enable Minimal Cryptographic Core with SHA3 and XTS
- 28 Disable Hardware Cryptography, Keep DRBG and Jitter Entropy
- 29 Disable Kernel Debugging Features
- 30 Disable Filesystem Verity and SecurityFS
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Zephyr in Redpesk
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Mender redpesk (OTA)
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Hardware support
- Download images
- Image metrics
- Trusted Boot
- Boards - ARM64
- Boards - x86_64
- Boards - Virtual
- Miscs
Debugging binder and bindings
When compiled appropriately, the binder understands the 2 configuration variables:
- AFB_DEBUG_BREAK: to emit interrupts
- AFB_DEBUG_WAIT: to wait interrupts
To use these variables, assign it the list of break or wait points to reach.
Example:
$ AFB_DEBUG_BREAK=main-entry AFB_DEBUG_WAIT=start-load,start-exec afb-binder ....
This tells to afb-binder to break at the point main-entry and to wait at the points start-load and start-exec.
The items of the list can be separated using comma, space, tab or new-line.
The break/wait points are, in the order of their occurrence:
- main-entry: before decode arguments
- main-args: before binder setup
- main-start: before starting jobs
- start-entry: before initialisation of sessions and hooks
- start-load: before load and pre-init of bindings
- start-start: before init of bindings
- start-http: before start of http server
- start-call: before execution of requests of the command line (option –call)
- start-exec: before execution of child process
Note also that a call to ‘personality’ is inserted just after the point start-start.