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Simon Glass <sjg@chromium.org> says: When the SPL build-phase was first created it was designed to solve a particular problem (the need to init SDRAM so that U-Boot proper could be loaded). It has since expanded to become an important part of U-Boot, with three phases now present: TPL, VPL and SPL Due to this history, the term 'SPL' is used to mean both a particular phase (the one before U-Boot proper) and all the non-proper phases. This has become confusing. For a similar reason CONFIG_SPL_BUILD is set to 'y' for all 'SPL' phases, not just SPL. So code which can only be compiled for actual SPL, for example, must use something like this: #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) In Makefiles we have similar issues. SPL_ has been used as a variable which expands to either SPL_ or nothing, to chose between options like CONFIG_BLK and CONFIG_SPL_BLK. When TPL appeared, a new SPL_TPL variable was created which expanded to 'SPL_', 'TPL_' or nothing. Later it was updated to support 'VPL_' as well. This series starts a change in terminology and usage to resolve the above issues: - The word 'xPL' is used instead of 'SPL' to mean a non-proper build - A new CONFIG_XPL_BUILD define indicates that the current build is an 'xPL' build - The existing CONFIG_SPL_BUILD is changed to mean SPL; it is not now defined for TPL and VPL phases - The existing SPL_ Makefile variable is renamed to SPL_ - The existing SPL_TPL Makefile variable is renamed to PHASE_ It should be noted that xpl_phase() can generally be used instead of the above CONFIGs without a code-space or run-time penalty. This series does not attempt to convert all of U-Boot to use this new terminology but it makes a start. In particular, renaming spl.h and common/spl seems like a bridge too far at this point. The series is fully bisectable. It has also been checked to ensure there are no code-size changes on any commit.
30 lines
882 B
Makefile
30 lines
882 B
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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# Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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ifdef CONFIG_XPL_BUILD
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obj-$(CONFIG_SPL_FS_LOADER) += fs.o
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obj-$(CONFIG_SPL_FS_FAT) += fat/
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obj-$(CONFIG_SPL_FS_EXT4) += ext4/
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obj-$(CONFIG_SPL_FS_CBFS) += cbfs/
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obj-$(CONFIG_SPL_FS_SQUASHFS) += squashfs/
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else
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obj-y += fs.o
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obj-$(CONFIG_FS_BTRFS) += btrfs/
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obj-$(CONFIG_FS_CBFS) += cbfs/
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obj-$(CONFIG_CMD_CRAMFS) += cramfs/
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obj-$(CONFIG_FS_EXT4) += ext4/
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obj-$(CONFIG_FS_FAT) += fat/
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obj-$(CONFIG_FS_JFFS2) += jffs2/
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obj-$(CONFIG_SANDBOX) += sandbox/
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obj-$(CONFIG_SEMIHOSTING) += semihostingfs.o
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obj-$(CONFIG_CMD_UBIFS) += ubifs/
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obj-$(CONFIG_YAFFS2) += yaffs2/
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obj-$(CONFIG_CMD_ZFS) += zfs/
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obj-$(CONFIG_FS_SQUASHFS) += squashfs/
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obj-$(CONFIG_FS_EROFS) += erofs/
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endif
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obj-y += fs_internal.o
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