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ce063e0829
This commit introduces the build infrastructure changes needed for creating a shared RO library. (libsharedobjs). The end goal is for the library to contain various objects that can be shared with both the RO and RW EC images. Now, there are 3 make goals: ro, rw, and libsharedobjs. In order for changes that are only specific to a single image (ie: RW only) to be applied correctly, the object files are now built separately for the RO, RW, shared objects library targets. NOTE: Certain EC targets are incompatible with this model due to the fact that only one image is present within flash at a time. BRANCH=none BUG=None TEST=make -j buildall tests TEST=make -j BOARD=cr50 xrefs TEST=make BOARD=samus dis TEST=Built samus EC image and compared that the final EC image was identical to the upstream version (except for the git SHAs & version strings). CQ-DEPEND=CL:285934 Change-Id: I8e67f089710be9c6d7017718109262394bdad2f5 Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/274079 Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org> Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_CONFIG_STD_INTERNAL_FLASH_H
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#define __CROS_EC_CONFIG_STD_INTERNAL_FLASH_H
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/*
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* Standard memory-mapped flash layout:
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* - RO image starts at the beginning of flash.
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* - PSTATE immediately follows the RO image.
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* - RW image starts at the second half of flash.
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* - WP region consists of the first half of flash (RO + PSTATE).
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*/
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/*
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* The EC uses the one bank of flash to emulate a SPI-like write protect
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* register with persistent state.
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*/
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#define CONFIG_FW_PSTATE_SIZE CONFIG_FLASH_BANK_SIZE
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#define CONFIG_FW_PSTATE_OFF (CONFIG_FW_IMAGE_SIZE - CONFIG_FW_PSTATE_SIZE)
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/* Size of one firmware image in flash */
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#define CONFIG_FW_IMAGE_SIZE ((CONFIG_FLASH_PHYSICAL_SIZE - \
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CONFIG_SHAREDLIB_SIZE) / 2)
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#define CONFIG_FLASH_SIZE CONFIG_FLASH_PHYSICAL_SIZE
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/*
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* By default, there is no shared objects library. However, if configured, the
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* shared objects library will be placed after the RO image.
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*/
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#define CONFIG_SHAREDLIB_MEM_OFF (CONFIG_RO_MEM_OFF + \
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CONFIG_FW_IMAGE_SIZE)
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#define CONFIG_SHAREDLIB_STORAGE_OFF (CONFIG_RO_STORAGE_OFF + \
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CONFIG_FW_IMAGE_SIZE)
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#define CONFIG_SHAREDLIB_SIZE 0
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#define CONFIG_RO_MEM_OFF 0
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#define CONFIG_RO_STORAGE_OFF 0
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#define CONFIG_RO_SIZE (CONFIG_FW_IMAGE_SIZE - CONFIG_FW_PSTATE_SIZE)
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#define CONFIG_RW_MEM_OFF (CONFIG_SHAREDLIB_MEM_OFF + \
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CONFIG_SHAREDLIB_SIZE)
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#define CONFIG_RW_STORAGE_OFF (CONFIG_SHAREDLIB_STORAGE_OFF + \
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CONFIG_SHAREDLIB_SIZE)
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#define CONFIG_RW_SIZE CONFIG_FW_IMAGE_SIZE
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#define CONFIG_WP_OFF CONFIG_RO_STORAGE_OFF
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#define CONFIG_WP_SIZE CONFIG_FW_IMAGE_SIZE
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#endif /* __CROS_EC_CONFIG_STD_INTERNAL_FLASH_H */
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