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Open Virtualization Licensing Options
Flexible Open Source and Commercial Solutions
Different organizations require different products and licensing models. To satisfy these requirements, we offer a number of licensing options for our hypervisor and Trusted Execution Environment (TEE) software. These options include an open source GNU GPL-licensed distribution as well as a commercial version available under royalty and royalty-free licenses.
Advantages of Licensing the SierraVisor and SierraTEE Software:
- The commercial versions provide features not available in the open source software
- Customers receive licensing rights to use the SierraVisor and SierraTEE software without being constrained by GPL license restrictions
- Any modifications or improvements to the source code do not have to be released to the open source community
- Copyright notices and licenses for Sierraware do not have to be distributed with products
- Optional technical support and professional services offerings accelerate equipment manufacturers' time-to-market
Comparison of Commercial and Open Source Products
| Features |
SierraTEE |
Open Virtualization
TEE |
| TrustZone Extensions (GP Client & Internal API) |
Yes |
Yes |
| Multitasking Microkernel |
Yes |
No |
| Kernel/User Task Separation |
Yes |
No |
| Task Isolation (Each process has its own isolated memory space) |
Yes |
No |
| POSIX compliant libc |
Yes |
Partial |
| Crypto library |
Yes |
OpenSSL |
|
Dynamic Application Loader (Load 3rd party apps at run time) |
Yes |
No |
| TEE background tasks & preemption |
Yes |
No |
| FAT32, NAND, XOR (Storage & File system) |
Yes |
No |
| Secure Boot |
Yes |
No |
| Virtual UART |
Yes |
No
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| Features |
SierraVisor |
Open Virtualization
Hypervisor |
| TrustZone Virtualization |
Yes |
Yes |
| Hardware Virtualization (A15, A5x/64bit) |
Yes |
No |
| Hypervisor Tasks |
Yes |
No |
|
Ability to run guest like Android in user space |
Yes |
No |
|
I/O Virtualization using 'virtio'; Ethernet, UART, Storage |
Yes |
No |
| Hypercall/Zero copy buffers |
Yes |
No |
| VPCU scheduler for both Guest & TEE Microkernel |
Yes |
No |
| Guest Reboot/Suspend |
Yes |
No |
| BSP |
| ARM Fast Models |
Yes |
Yes |
| Xilinx Zynq-7000, Broadcom 74xx, Freescale iMX6, Samsung Exynos4 |
Yes |
No |
Contact Sierraware to discuss your options for licensing the SierraVisor, SierraTEE, and Open Virtualization software.
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