Andrew Boie ea6e4ad098 kernel: support non-identity RAM mapping ... Some platforms may have multiple RAM regions which are dis-continuous in the physical memory map. We really want these to be in a continuous virtual region, and we need to stop assuming that there is just one SRAM region that is identity-mapped. We no longer use CONFIG_SRAM_BASE_ADDRESS and CONFIG_SRAM_SIZE as the bounds of kernel RAM, and no longer assume in the core kernel that these are identity mapped at boot. Two new Kconfigs, CONFIG_KERNEL_VM_BASE and CONFIG_KERNEL_RAM_SIZE now indicate the bounds of this region in virtual memory. We are currently only memory-mapping physical device driver MMIO regions so we do not need virtual-to-physical calculations to re-map RAM yet. When the time comes an architecture interface will be defined for this. Platforms which just have one RAM region may continue to identity-map it. Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>		2020-11-09 20:19:13 -05:00
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arc	arch: arc: add support of ARConnect inter-core debug unit	2020-11-09 15:52:15 -06:00
arm
common
nios2
posix
riscv	arch: riscv: add memory protection support	2020-11-09 15:37:11 -05:00
x86	x86: add support for common page tables	2020-11-05 09:33:40 -05:00
xtensa
CMakeLists.txt
Kconfig	kernel: support non-identity RAM mapping	2020-11-09 20:19:13 -05:00