adc32659fb
Bootloader: * set permissions to kernel read/write, no user access for initially mapped memory areas * set permissions to kernel read/write, no execute, no user access for UART Kernel: * physical memory mapper uses kernel read/write mapping with no-execute bit enabled * all other pages are mapped as read/write/execute for kernel and user * proper access permissions and memory types to be implemented later Enforce memory access permissions by setting DACR to client mode for domain #0, no access for other domains. see ARM Architecture Reference Manual, section B3.7 Memory access control and in particular the following subsections: B3.7.1 Access permissions B3.7.2 Execute-never restrictions on instruction fetching B3.7.3 Domains, Short-descriptor format only Change-Id: I8127b4c72dc516d013cb9751d80d6f3a9ec835e6 Reviewed-on: https://review.haiku-os.org/c/haiku/+/5233 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com> |
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