于 2018年5月17日 GMT+08:00 下午4:16:58, Andre Przywara <andre.przyw...@arm.com> 写到: >This series tries to solve three issues we currently have on >Allwinner boards: >- The DRAM sizing routine can only cope with power-of-two sized DRAM. >- The DRAM sizing routine steps through all DRAM, possibly hitting >secure > memory. >- The SPL header versioning is quite strict and tends to break every >time > we need to update it. > >So I thought about introducing something along the lines of semantic >versioning[1], where we can add backwards-compatible changes to the SPL >header without breaking every tool. This is introduced in the first
How to define the "backwards-compatible"? Should it have a standard? (e.g. tools have no change needed and U-Boot will have fallback code) >patch. >The second patch does some refactoring, so that the third patch can use >the newly gained freedom to store the DRAM size. The SPL knows the DRAM >size very well, so we store this in the SPL header, so that U-Boot >proper >can pick it up from there. This saves the call to get_ram_size() with >its deficiencies. >More information in the respective commit messages. > >I understand that this versioning solution is not fully future-proof, >but >we have only one byte for the version, and I just wanted to start >discussion on this. >There is a corresponding patch for sunxi-tools as well I am posting >shortly. > >[1] https://semver.org > >Cheers, >Andre. > >Andre Przywara (3): > sunxi: Extend SPL header versioning > sunxi: board.c: refactor SPL header checks > sunxi: store DRAM size in SPL header > > arch/arm/include/asm/arch-sunxi/spl.h | 22 ++++++++---- >board/sunxi/board.c | 66 >++++++++++++++++++++++++++++------- > 2 files changed, 70 insertions(+), 18 deletions(-) _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot