On Mon, Jan 2, 2017 at 12:48 PM, Andre Przywara <andre.przyw...@arm.com> wrote: > Hi, > > hopefully the final version of the SPL support series for the Allwinner A64 > SoC. Actually no real code changes this time, just rebased on top of recent > master, adding some comments in patches 16/26 and 19/26 following Maxime's > suggestions and adding Acked-by:s and Reviewed-by:s. > I left the final patch 26/26 in for the sake of completeness, but don't expect > it to be merged. We need a clever solution to unify 32-bit and 64-bit board > configurations, but that shouldn't hold back this series for now. > Merging everything until and including patch 21/26 (sunxi: A64: enable SPL) > would be great, the other patches until 25/26 can go in as well, I think. > > ------------- > As the previous versions this one includes support for both AArch64 and > AArch32 SPL builds. The FIT support is still missing, which means the > functionality is limited. Due to the missing ARM Trusted Firmware (ATF) > in this firmware chain we lose Ethernet and SMP, among other minor things. > A full 64-bit build can be written to an SD card as expected and will > boot the U-Boot proper prompt. However Linux will crash on boot, as > PSCI is missing. > Building the 32-bit version of the SPL and combining this with an ATF > build and the 64-bit U-Boot proper allows to use FEL booting now: > # sunxi-fel spl sunxi-spl.bin write 0x4a000000 u-boot-dtb.bin \ > write 0x44000 bl31.bin reset64 0x44000 > This way of booting the board gives full functionality. > > The first patch is a rather simple fix (with no changes to v2). > Patches 2-8 prepare the SPL code to be compiled for 64-bit in general and > AArch64 in particular. > Patches 9-11 refactor the existing boot0 header functionality to be used > by patch 12, which introduces the 64-bit switch in the first SPL > instructions. > Patches 13-20 then introduce the actual core of the SPL support: the DRAM > initialization, courtesy of Jens. This piggy backs on the existing > H3 DRAM code, deviating where needed. This has been reworked compared to > v2: I added a patch from Philipp to replace the rather uninspired > register writes in the MBUS priority setup function with some meaningful > code, explaining the various bits. Also the actual A64 DRAM code is no > longer #ifdef'ed into the H3 driver, but uses parameters to (static) > functions. The compiler detects this and removes the dead code from > the other variant, resulting in the same binary size for the H3. > > Patch 21 finally enables the 64-bit SPL support. So now building the > existing pine64_plus_defconfig will generate a sunxi-spl.bin, which > can be prepended to the U-Boot proper image (not .bin) to boot from > an SD card. Due to the missing ATF support this is of limited usability > at the moment, though. Also FEL support requires more love - to switch > back to AArch32 before returning to FEL (without crashing, that is ;-), > so this is disabled. > On my setup this results in a 26KB SPL binary, which is close to the > 28K limit mksunxiboot imposes at the moment. Adding anything (like > FIT support or DEBUG) will exceed this, and although I have patches > to let mksunxiboot get close to 32KB, this is the ulimate frontier. > > So patches 22-25 then teach the SPL how to detect an U-Boot image file > of a different bitness and do the RMR switch from AArch32 to AArch64, > if needed. > This is used by the final patch 26, which creates another _defconfig > to let the SPL compile for AArch32 using the Thumb2 encoding. This > results in a binary of less than 17KB in my case, so has plenty of > room for extensions. > > Cheers, > Andre. > > Changelog v3 .. v4: > - rebased on top of latest HEAD > - add various Reviewed-by: and Acked-by: tags > - add comments about register bit meanings in non-ODT-setting fix > - clarify meaning of delay values in single bit delay support patch > - removing stray semicolons from boot0.h header > > Changelog v2 .. v3: > - add various Reviewed-by: and Acked-by: tags > - split tiny-printf fix to handle "-" separately > - add various comments and extend commit messages > - add assembly file to re-create the embedded RMR switch code > - add patch 14/26 to explain the MBUS priority setup > - move DRAM r/w delay values into #defines to simplify re-usablity > - replace #ifdef'ed addition of A64 support to the H3 DRAM driver with an > approach using static parameters > > Changelog v1 .. v2: > - drop SPI build fix (already merged) > - confine A31 register init change to H3 and A64 > - use IS_ENABLED() instead of #idef to guard MBUS2 clock init > - fix tiny-printf (proper sign extension for 32-bit integers) > - add "size" output in commit msg to document tiny-printf size impact > - fix sdelay(): use only one register, add "cc" clobber > - update RMR switch code to provide easy access to RVBAR register address > - drop redundant DRAM frequency setting from Pine64 defconfig > - minor changes as requested by reviewers > > Andre Przywara (21): > sun6i: Restrict some register initialization to Allwinner A31 SoC > armv8: prevent using THUMB > armv8: add lowlevel_init.S > SPL: tiny-printf: add "l" modifier > SPL: tiny-printf: ignore "-" modifier > move UL() macro from armv8/mmu.h into common.h > SPL: make struct spl_image 64-bit safe > armv8: add simple sdelay implementation > armv8: move reset branch into boot hook > ARM: boot0 hook: remove macro, include whole header file > sunxi: introduce extra config option for boot0 header > sunxi: A64: do an RMR switch if started in AArch32 mode > sunxi: provide default DRAM config for sun50i in Kconfig > sunxi: H3/A64: fix non-ODT setting > sunxi: DRAM: fix H3 DRAM size display on aarch64 > sunxi: A64: enable SPL > SPL: read and store arch property from U-Boot image > Makefile: use "arm64" architecture for U-Boot image files > ARM: SPL/FIT: differentiate between arm and arm64 arch properties > sunxi: introduce RMR switch to enter payloads in 64-bit mode > sunxi: A64: add 32-bit SPL support > > Jens Kuske (3): > sunxi: H3: add and rename some DRAM contoller registers > sunxi: H3: add DRAM controller single bit delay support > sunxi: A64: use H3 DRAM initialization code for A64 as well > > Philipp Tomsich (2): > sunxi: H3: Rework MBUS priority setup > sunxi: clocks: Use the correct pattern register for PLL11
Except arm64, applied SPL support (till 21) Applied to u-boot-sunxi/master thanks! _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
