From: Tom Rini Date: Mon, 26 Aug 2024 20:06:16 +0000 (-0600) Subject: Merge patch series "global_data: Reduce size of struct global_data" X-Git-Url: http://git.dujemihanovic.xyz/img/static/%7B%7B%20%24.Site.BaseURL%20%7D%7Dposts/index.xml?a=commitdiff_plain;h=02d587a447ccae12618abbfb2b8ddd88ac3c7648;p=u-boot.git Merge patch series "global_data: Reduce size of struct global_data" Simon Glass says: The global data structure has grown quite a lot over the years, being the best place to put an important pointer or something that must be accessed before and after relocation. This series attempts to reduce the size a little, by moving some things out and shrinking and aligning some fields. Some fields are needed during init but not afterwards. To deal with this a new 'boardf' structure is created, which sits on the stack and is only present during board_init_f(). It is possible that more fields could move to this struct, but for now only 4 are moved. An assumption is made that an int is 32-bits wide on all architectures, which seems to be true, but maintainers should be able to confirm. Mostly the code-size impact is neutral, but the patch 'Use less space for environment fields' does increase U-Boot's size by about 30 bytes on aarch64. For firefly-rk3399 (64-bit) the size of global reduces from 456 to 368 bytes. For SPL it reduces from 416 to 272 bytes. There are other things which could be attempted, for example: - Using hlist instead of list for some lists - Checking that only necessary fields are present in SPL --- 02d587a447ccae12618abbfb2b8ddd88ac3c7648