mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-14 16:46:23 +00:00
b42dd73603
When a chip has special/non-contiguous SRAM physical memory region, rather than extending the generic linker file ad nauseam, define a mechanism to declare a chip specific list of those regions. To do so, a chip must declare the CONFIG_CHIP_MEMORY_REGIONS configuration and have a memory_regions.inc with the list of regions. The special-purpose preprocessed chip/<chip_name>/memory_regions.inc file has one region declaration per line using the following macro: REGION(name, attributes, start_address, size) Each region will get a proper MEMORY entry and a section in the linker file. the __SECTION(region_name) helper is provided as a convenience to declare variable in a specific region. Note: those 'special' regions are NOT cleared at startup contrary to .bss. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=b:67081508 TEST=on ZerbleBarn, along with the following CLs, run the firmware with large arrays in special AHB memory regions. Change-Id: I3f156ef6e5feb4a6a0b2ae2468bae8a20483f17c Reviewed-on: https://chromium-review.googlesource.com/946368 Commit-Ready: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly