Hi all, Yesterday Peter Maydell asked on IRC if I had any working Exynos4 image. I looked at some old backuped notes and could boot Guenter initrd with BusyBox. I'll use this cover letter to share my notes, they might help to have this board fully usable again.
This board is listed as "Odd Fixes". Since we have it covered, I thought it was worthwhile to have it covered by tests to avoid more regressions. Frédéric Basse used this board last year: https://fredericb.info/2018/03/emulating-exynos-4210-bootrom-in-qemu.html I'll have a look a these particular commits he added: - https://github.com/frederic/qemu-exynos-bootrom/commit/9be5c9f2253dbc04ee sd: add sd clock support to SDHC_CLKCON - https://github.com/frederic/qemu-exynos-bootrom/commit/6f045949ee2fdec624 sd: always reply to ACMD41 (SD_APP_OP_COND) Guenter also carries on this patch: - https://github.com/groeck/qemu/commit/0a80543cc910d hw/timer/exynos4210_mct: Initialize timer before starting it When booting a recent Linux kernel, the qemu message "Timer with period zero, disabling" is seen, apparently because a timer is started before being initialized. Fix the problem by initializing the offending timer before starting it. It might also be interesting to use Krzysztof's initramfs image: https://github.com/krzk/tools/blob/master/run-qemu.sh#L29 The 1st test added works fine, however the 2nd (SD card) is not reliable so it is disabled. We might need to adapt the ADMA patch Igor sent once: https://patchwork.ozlabs.org/patch/181854/ If you want to run the Avocado tests, you need these other patches pending review: - https://lists.gnu.org/archive/html/qemu-devel/2019-09/msg06439.html "tests/boot_linux_console: Extract the gunzip() helper" - https://lists.gnu.org/archive/html/qemu-devel/2019-09/msg06438.html "python/qemu/machine: Allow to use other serial consoles than default" (only for the 2nd disabled test) Regards, Phil. Based-on: 20190926173428.10713-16-f4...@amsat.org Philippe Mathieu-Daudé (5): tests/boot_linux_console: Add initrd test for the Exynos4210 hw/sd/sdhci: Add a comment to distinct the i.MX eSDHC functions hw/sd/sdhci: Add dummy Samsung SDHCI controller hw/arm/exynos4210: Use the Samsung s3c SDHCI controller tests/boot_linux_console: Add sdcard test for the Exynos4210 hw/arm/exynos4210.c | 2 +- hw/sd/sdhci.c | 68 +++++++++++++++++++- include/hw/sd/sdhci.h | 2 + tests/acceptance/boot_linux_console.py | 88 ++++++++++++++++++++++++++ 4 files changed, 158 insertions(+), 2 deletions(-) -- 2.20.1