From: Tom Rini Date: Sat, 2 Apr 2022 19:28:43 +0000 (-0400) Subject: Merge branch '2022-04-01-arm-semihosting-cleanups-and-new-features' into next X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=10d615f2fcc0d2ef1d611844eb6032fe0fca8afd;p=u-boot.git Merge branch '2022-04-01-arm-semihosting-cleanups-and-new-features' into next This brings in two related series. The first from Andre: This series is the continuation of last year's effort to support the new Armv8-R64 application profile. This led to a significant rework of the existing fastmodel (FVP) support, to both upgrade it to newest U-Boot standards (OF_CONTROL and distro_boot support), but also to generalise the code, so that plugging in the v8-R64 support in the last patch gets much easier. This is because apart from the twisted memory map between the two profiles there is actually little difference, when it comes to U-Boot relevant parts of the hardware. I kept the legacy semihosting support (which picks up magic files from the current directory), but if that fails, we go and try virtio-blk (.iso installer images work), then virtio-net. Please have a look, and give it a try, if possible. Both the v8-R and v8-A FVP models are available for free on the Arm website[1]. Patch 01/11 fixes a regression introduced in December, it should be applied now. The rest of the patches are for the next merge window. [1] https://developer.arm.com/tools-and-software/simulation-models/fast-models And the second from Sean (where we exclude 27, 28 and 29 for now): This cleans up the semihosting code and adds the following new features: - hostfs support (like sandbox) - support for being used as a SPL boot device - serial device support - falling back to normal drivers if semihosting is disabled The main device affected by these changes is vexpress64, so I'd appreciate if Andre (or anyone else) could try booting. These changes are motivated by bringup for ls1046a. When forcing JTAG boot, this device disables most communication peripherals, including serial and ethernet devices. This appears to be fixed in later generation devices, but we are stuck with it for now. Semihosting provides an easy way to run a few console commands. The patches in this series are organized as follows: 0-4: rST conversions and other documentation updates 5-9: Semihosting cleanups 10-14: Filesystem support (including SPL boot device) 15-16: Serial support 16: Documentation update 17: JTAG boot support for LS1046A 19-25: Semihosting fallback 26-29: DM puts support The last two groups of patches are "bonus;" the first 17 patches stand on their own. The last two groups could be broken out as separate series, but I have kept them in this one to help with my sanity (and not have to deal with too many outstanding series). Patch 14 depends on [1] to apply cleanly. Patch 17 depends on [2] for correctness. This series should be applied to u-boot/next (in particular, the EROFS series must have been applied). [1] https://lore.kernel.org/u-boot/CACRpkdZ+9fmNjC_mvrbPa9-iuTQVd8UkJ7Zpe7cL0c5vZygsVw@mail.gmail.com/T/ [2] https://lore.kernel.org/u-boot/20220222183840.1355337-2-sean.anderson@seco.com/ --- 10d615f2fcc0d2ef1d611844eb6032fe0fca8afd