On 1/18/22 19:44, Fabiano Rosas wrote:
changes from v1:
- New patch that renames MSR_POW to MSR_WE for the 405.
- New patch that adds just MSR_ME to the msr_mask.
- New patches to cleanup exceptions I missed the first time around.
- Dropped the patch that added all the missing MSR bits. We have an
issue when two different MSR bits share the same number in different
CPUs. Described in v1 here:
https://lists.nongnu.org/archive/html/qemu-ppc/2022-01/msg00503.html
- Dropped the patch that adds missing exception vectors because Linux
clearly cannot handle them. And I don't have access to real hardware
to confirm some of the questions raised, so let's keep things as they
are.
- Kept the split in two patches. One that copies powerpc_excp_legacy
and other that does the changes.
Based on legoater/ppc-7.0
With only the fixes from the above branch, the ref405ep machine boots
until the shell. This series doesn't change that.
FYI, with a couple of extra patches, adding a hotfoot variant
machine and its PCI controller, network comes up with a rtl8139
and a virtio-net-pci devices. I2C seems fine. The only open issue
is the timer which is twice too fast.
I will merge this series, unless Fabiano wants to send a v3, and
the patch fixing the TLBs. The patches for the hotfoot variant can
come later.
Thanks,
C.
qemu-system-ppc -M ref405ep-hotfoot -serial null -kernel
/path/to/linux.git/build_ppc40x/arch/powerpc/boot/cuImage.hotfoot.elf -initrd
/home/legoater/work/buildroot/images//qemu_ppc_ref405ep-latest//rootfs.cpio
-net nic,model=virtio-net-pci,netdev=net0,addr=3 -netdev
bridge,id=net0,helper=/usr/libexec/qemu-bridge-helper,br=virbr0 -device
ds1338,address=0x68 -serial mon:stdio -nographic
Memory <- <0x0 0x8000000> (128MB)
CPU clock-frequency <- 0x7f28155 (133MHz)
CPU timebase-frequency <- 0x7f28155 (133MHz)
/plb: clock-frequency <- 1fca055 (33MHz)
/plb/opb: clock-frequency <- 1fca055 (33MHz)
/plb/ebc: clock-frequency <- 1fca055 (33MHz)
/plb/opb/serial@ef600300: clock-frequency <- 1d1079 (2MHz)
/plb/opb/serial@ef600400: clock-frequency <- 1d1079 (2MHz)
ethernet0: local-mac-address <- 00:00:00:00:00:00
ethernet1: local-mac-address <- 00:00:07:f2:81:55
Fixing devtree for 4M Flash
zImage starting: loaded at 0x00700000 (sp: 0xfff7ff98)
Decompression error: 'Not a gzip file'
No valid compressed data found, assume uncompressed data
Allocating 0x613ee0 bytes for kernel...
0x5f391c bytes of uncompressed data copied
Using loader supplied ramdisk at 0x1800000-0x1c6d800
initrd head: 0x30373037
Linux/PowerPC load:
Finalizing device tree... flat tree at 0xd1a960
Linux version 5.16.0-11200-g1d1df41c5a33-dirty (legoater@yukon)
(powerpc64-linux-gnu-gcc (GCC) 11.2.1 20210728 (Red Hat Cross 11.2.1-1), GNU ld
version 2.35.2-1.fc34) #127 Thu Jan 20 10:19:47 CET 2022
Found initrd at 0xc1800000:0xc1c6d800
Using PowerPC 40x Platform machine description
printk: bootconsole [udbg0] enabled
-----------------------------------------------------
phys_mem_size = 0x8000000
dcache_bsize = 0x20
icache_bsize = 0x20
cpu_features = 0x0000000000000100
possible = 0x0000000000000100
always = 0x0000000000000100
cpu_user_features = 0x86000000 0x00000000
mmu_features = 0x00000004
-----------------------------------------------------
Zone ranges:
Normal [mem 0x0000000000000000-0x0000000007ffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000000000-0x0000000007ffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
MMU: Allocated 1088 bytes of context maps for 255 contexts
Built 1 zonelists, mobility grouping on. Total pages: 32512
Kernel command line:
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
mem auto-init: stack:off, heap alloc:off, heap free:off
Kernel virtual memory layout:
* 0xffbdf000..0xfffff000 : fixmap
* 0xc9000000..0xffbdf000 : vmalloc & ioremap
Memory: 119108K/131072K available (4372K kernel code, 248K rwdata, 1308K
rodata, 168K init, 127K bss, 11964K reserved, 0K cma-reserved)
SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS: 512, nr_irqs: 512, preallocated irqs: 16
UIC0 (32 IRQ sources) at DCR 0xc0
clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x1ec031343f,
max_idle_ns: 440795203544 ns
clocksource: timebase mult[7800000] shift[24] registered
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
devtmpfs: initialized
random: get_random_u32 called from bucket_table_alloc.isra.0+0x74/0x170 with
crng_init=0
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns:
19112604462750000 ns
futex hash table entries: 256 (order: -1, 3072 bytes, linear)
NET: Registered PF_NETLINK/PF_ROUTE protocol family
DMA: preallocated 128 KiB GFP_KERNEL pool for atomic allocations
thermal_sys: Registered thermal governor 'step_wise'
PCI host bridge /plb/pci@ec000000 (primary) ranges:
MEM 0x0000000080000000..0x000000009fffffff -> 0x0000000080000000
IO 0x00000000e8000000..0x00000000e800ffff -> 0x0000000000000000
4xx PCI DMA offset set to 0x00000000
4xx PCI DMA window base to 0x0000000000000000
DMA window size 0x0000000080000000
PCI: Probing PCI hardware
PCI host bridge to bus 0008:00
pci_bus 0008:00: root bus resource [io 0x0000-0xffff]
pci_bus 0008:00: root bus resource [mem 0x80000000-0x9fffffff]
pci_bus 0008:00: root bus resource [bus 00-ff]
pci_bus 0008:00: busn_res: [bus 00-ff] end is updated to ff
pci 0008:00:00.0: [1014:027f] type 00 class 0x068000
PCI: Hiding 4xx host bridge resources 0008:00:00.0
pci 0008:00:03.0: [1af4:1000] type 00 class 0x020000
pci 0008:00:03.0: reg 0x10: [io 0x0000-0x001f]
pci 0008:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref]
pci 0008:00:03.0: reg 0x30: [mem 0x00000000-0x0003ffff pref]
pci_bus 0008:00: busn_res: [bus 00-ff] end is updated to 00
pci 0008:00:03.0: BAR 6: assigned [mem 0x80000000-0x8003ffff pref]
pci 0008:00:03.0: BAR 4: assigned [mem 0x80040000-0x80043fff 64bit pref]
pci 0008:00:03.0: BAR 0: assigned [io 0x1000-0x101f]
pci_bus 0008:00: resource 4 [io 0x0000-0xffff]
pci_bus 0008:00: resource 5 [mem 0x80000000-0x9fffffff]
vgaarb: loaded
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
<giome...@linux.it>
PTP clock support registered
clocksource: Switched to clocksource timebase
NET: Registered PF_INET protocol family
IP idents hash table entries: 2048 (order: 2, 16384 bytes, linear)
tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
NET: Registered PF_UNIX/PF_LOCAL protocol family
PCI: CLS 0 bytes, default 32
Trying to unpack rootfs image as initramfs...
workingset: timestamp_bits=30 max_order=15 bucket_order=0
io scheduler mq-deadline registered
io scheduler kyber registered
virtio-pci 0008:00:03.0: enabling device (0000 -> 0003)
Freeing initrd memory: 4532K
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
printk: console [ttyS0] disabled
serial8250.0: ttyS0 at MMIO 0xef600400 (irq = 16, base_baud = 119047) is a
16550A
printk: console [ttyS0] enabled
printk: console [ttyS0] enabled
printk: bootconsole [udbg0] disabled
printk: bootconsole [udbg0] disabled
serial8250.0: ttyS1 at MMIO 0xef600300 (irq = 17, base_baud = 119047) is a
16550A
printk: console [ttyS0] disabled
printk: console [ttyS0] enabled
ef600300.serial: ttyS1 at MMIO 0xef600300 (irq = 17, base_baud = 119047) is a
16550
brd: module loaded
e1000: Intel(R) PRO/1000 Network Driver
e1000: Copyright (c) 1999-2006 Intel Corporation.
i2c_dev: i2c /dev entries driver
rtc-ds1307 0-0068: registered as rtc0
rtc-ds1307 0-0068: setting system clock to 2022-01-20T09:22:34 UTC (1642670554)
ibm-iic ef600500.i2c: using standard (100 kHz) mode
lm75: probe of 0-004a failed with error -121
NET: Registered PF_PACKET protocol family
drmem: No dynamic reconfiguration memory found
Freeing unused kernel image (initmem) memory: 168K
Kernel memory protection not selected by kernel config.
Run /init as init process
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Saving random seed: random: dd: uninitialized urandom read (512 bytes read)
OK
Starting network: udhcpc: started, v1.34.1
random: mktemp: uninitialized urandom read (6 bytes read)
udhcpc: broadcasting discover
udhcpc: broadcasting select for 192.168.199.76, server 192.168.199.1
udhcpc: lease of 192.168.199.76 obtained from 192.168.199.1, lease time 3600
deleting routers
random: mktemp: uninitialized urandom read (6 bytes read)
adding dns 192.168.199.1
OK
Welcome to Buildroot
buildroot login: root
# cat /proc/cpuinfo
processor : 0
cpu : 405EP
clock : 133.333333MHz
revision : 9.80 (pvr 5121 0950)
bogomips : 266.66
timebase : 133333333
platform : PowerPC 40x Platform
model : est,hotfoot
Memory : 128 MB
# cat /proc/interrupts
CPU0
16: 1552 UIC 1 Level ttyS0
23: 12 UIC 2 Level IBM IIC
27: 8 UIC 27 Level virtio0
LOC: 52166 Local timer interrupts for timer event device
BCT: 0 Broadcast timer interrupts for timer event device
LOC: 0 Local timer interrupts for others
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
MCE: 0 Machine check exceptions
NMI: 0 System Reset interrupts
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
inet 192.168.199.76/24 brd 192.168.199.255 scope global eth0
valid_lft forever preferred_lft forever
# hwclock random: fast init done
Thu Jan 20 09:22:53 2022 0.000000 seconds
#
