Messages in this thread | | | Date | Mon, 2 May 2022 13:35:11 -0700 | From | Guenter Roeck <> | Subject | Re: [PATCH v2 00/48] ARM: PXA multiplatform support |
| |
On 5/2/22 12:21, Arnd Bergmann wrote: > On Mon, May 2, 2022 at 6:26 PM Guenter Roeck <linux@roeck-us.net> 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 >
To boot from initrd:
qemu-system-arm -M z2 -kernel \ arch/arm/boot/zImage -no-reboot -initrd \ rootfs-armv5.cpio --append \ "panic=-1 slub_debug=FZPUA rdinit=/sbin/init console=ttyS0" -nographic \ -monitor null -serial stdio
where rootfs-armv5.cpio is from my repository at github.com.
https://github.com/groeck/linux-build-test/blob/master/rootfs/arm/rootfs-armv5.cpio.gz
> Do you have MMC or some other rootfs working without my patch series? >
I can boot z2 from mmc and flash, but I have a number of configuration flags enabled on top of pxa_defconfig. That also works with your latest patch series. See https://kerneltests.org/builders/qemu-arm-testing/builds/75/steps/qemubuildcommand/logs/stdio
# Always enable ... enable_config "${defconfig}" CONFIG_DEVTMPFS CONFIG_DEVTMPFS_MOUNT CONFIG_BLK_DEV_INITRD # Options needed to be built into the kernel for device support # on pxa devices # MTD, squashfs enable_config_cond "${defconfig}" CONFIG_MTD_BLOCK CONFIG_MTD_PXA2XX CONFIG_SQUASHFS # MMC enable_config_cond "${defconfig}" CONFIG_MMC_BLOCK CONFIG_MMC_PXA # PCMCIA enable_config_cond "${defconfig}" CONFIG_ATA CONFIG_BLK_DEV_SD CONFIG_PCCARD enable_config_cond "${defconfig}" CONFIG_PCMCIA CONFIG_PATA_PCMCIA CONFIG_PCMCIA_PXA2XX # USB enable_config_cond "${defconfig}" CONFIG_USB CONFIG_USB_STORAGE CONFIG_USB_OHCI_HCD CONFIG_USB_OHCI_HCD_PXA27X
Hope this helps, Guenter
| |