2015-1-8 · 老板交待任务，这个星期我都在研究trust zone的东东，之前有看过代码，但没有深入了解！好吧，这次看来我要跟它杠上了。网上有很多资料，但很多讲得太抽象，至少对门外汉来说有些难以理解，我估计有些文单可能翻译过来的吧，有些拗口。
2020-7-1 · 2.6 Security defined by address. The NXP IDAU implementation of Arm TrustZone for CPU0 involves using address bit 28 to divide the address space into potential secure and non-secure regions. Address bit 28 is not decoded in memory access hardware, so each physical location appears in two places on whatever bus they are located on. HO ARM TrustZone - HandsOn Training 2019-1-16 · o BP147 TrustZone protection controller o TZC-380 TrustZone address space controller o TZC 400 o MMU-40x o MMU-500 o Securing peripherals TrustZone aware peripherals o Interrupt controller o Other masters – System Control Processor (SCP) o DMA controller o Power peripherals o Trusted key storage and counters o Trusted entropy source (PDF) Virtualization on TrustZone-Enabled Microcontrollers add a TrustZone Address Space Controller (TZASC) and a TrustZone Protection Controller (TZPC), which allow memory and devices to be configured as either secure or non-secure. SANCTUARY: ARMing TrustZone with User-space Enclaves In particular, we leverage TrustZone's versatile Address-Space Controller available in current ARM System-on-Chip reference designs, to enforce two-way hardware-level isolation: (i) security-sensitive apps are shielded against a compromised normal-world OS, while (ii) the system is also protected from potentially malicious apps in isolated
virtual memory address space in the normal domain, but not vice versa. Note that the virtual MMU mechanism can only guarantee the isolation of virtual memory spaces, but not the physical memory spaces. TrustZone includes a TrustZone Address Space Controller (TZASC) to partition DRAM into secure or non-secure memory regions. The normal domain can-
Address Space Controllers – Arm
The TrustZone® Address Space Controller (TZC) is intended to filter DDR accesses according to security rules and non-secure master address ID. This is a simplified diagram of TZC. TZC is composed of two filter units, one per AXI port. Filters are working concurrently. The two filters are controlled by a common control register
TrustZone Address Space Controller (TZASC) The Cortex A9 MPCore internal Interrupt Controller The first and easiest part seemed to be the configuration of the physical memory areas that should be preserved for the secure world but invisible to the non-secure world, i.e., the RAM where the secure software stack is located in.