On 1/12/21 6:12 PM, Finn Thain wrote:
If you're a museum interested in cultural artifacts from decades past, or
if you're a business doing data recovery, you're going to need to operate
those platforms.
Or if you're camping patent expirations and want to be able to point at prior
art for new hardware development WITHOUT a legal team big enough to have its own
office building.
Once removed from mainline Linux, a port becomes basically frozen, and may
not be compatible with future emulators, which are a moving target. I say
that because last year I fixed bugs in Linux/m68k that made it incomatible
with recent QEMU releases (it was only compatible with old QEMU releases).
Speaking of which, my qemu m68k system has failed to boot ever since commit:
commit f93bfeb55255bddaa16597e187a99ae6131b964a
Author: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Date: Sun Jun 28 14:23:12 2020 +1000
macintosh/via-macii: Poll the device most likely to respond
Poll the most recently polled device by default, rather than the lowest
device address that happens to be enabled in autopoll_devs. This improves
input latency. Re-use macii_queue_poll() rather than duplicate that logic.
This eliminates a static struct and function.
It hangs in a cpu-eating loop after "random: crng init done". Miniconfig
attached, the qemu invocation is:
qemu-system-m68k -M q800 -nographic -no-reboot -m 256 -kernel vmlinux \
-initrd cpio.gz -append "panic=1 HOST=m68k console=ttyS0
Rob
P.S. This is the toybox "make root" m68k target from
https://github.com/landley/toybox/blob/master/scripts/mkroot.sh#L171 if that's
useful to know. It doesn't get to the root filesystem and the build just creates
that miniconfig and runs it as the comments say...
# make ARCH=m68k allnoconfig KCONFIG_ALLCONFIG=m68k.miniconf
# make ARCH=m68k -j $(nproc)
# boot vmlinux
# CONFIG_EMBEDDED is not set
# architecture independent
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_RD_GZIP=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT2=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_UTF8=y
CONFIG_MISC_FILESYSTEMS=y
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_XATTR=y
CONFIG_SQUASHFS_ZLIB=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IPV6=y
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
CONFIG_NETCONSOLE=y
CONFIG_ETHERNET=y
CONFIG_COMPAT_32BIT_TIME=y
CONFIG_EARLY_PRINTK=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# architecture specific
CONFIG_MMU=y
CONFIG_M68040=y
CONFIG_M68KFPU_EMU=y
CONFIG_MAC=y
CONFIG_SCSI_MAC_ESP=y
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_ADB=y
CONFIG_ADB_MACII=y
CONFIG_NET_CORE=y
CONFIG_MACSONIC=y
CONFIG_SERIAL_PMACZILOG=y
CONFIG_SERIAL_PMACZILOG_TTYS=y
CONFIG_SERIAL_PMACZILOG_CONSOLE=y
