On Mon, May 2, 2022 at 6:26 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > With v5.18-rc1-49-gcb813018b5c1, I still get: > > [ 0.797668] RAMDISK: Couldn't find valid RAM disk image starting at 0. > [ 0.805262] /dev/root: Can't open blockdev > [ 0.805487] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 > [ 0.805674] Please append a correct "root=" boot option; here are the available partitions: > > when trying to boot z2 from initrd. > > The other problems are gone. Ok, progress! What is your qemu command line? I see that z2 has no pcmcia device, so I tried booting from MMC, but this already fails with 5.18-rc1 without any of my patches, giving me [ 0.697481] Creating 3 MTD partitions on "physmap-flash": [ 0.698161] 0x000000000000-0x000000040000 : "U-Boot Bootloader" [ 0.702815] 0x000000040000-0x000000060000 : "U-Boot Environment" [ 0.706541] 0x000000060000-0x000000800000 : "Flash" [ 0.718066] pxa2xx-mci pxa2xx-mci.0: incomplete constraints, dummy supplies not allowed [ 0.718501] pxa2xx-mci pxa2xx-mci.0: incomplete constraints, dummy supplies not allowed Do you have MMC or some other rootfs working without my patch series? Arnd