Re: kernel 3.10 + ColdFire MCF5271

Hi Ertheb,

On 18/03/15 03:16, ertheb wrote:
> Hi all,
> 
> I use uClinux since 2008 on a board compatible with the Freescale M5271EVB.
> 
> I have successfully used kernel 2.4, 2.6, 3.1 and 3.3 with the default
> Freescale M5271EVB configuration.
> 
> Recently, i have tried to use uClinux-dist-20140504 with kernel 3.10.
> Compilation is o.k but a crash occurs at the kernel boot (see below).
> 
> I have applied the kernel patch 3.10.0 to 3.10.68 (2015-02-06) without
> success.
> 
> PC register address is located inside fec_probe function, i think crash
> occurs when kernel try to probe a second FEC module.
> (MCF5271 has only one fec module).
> 
> I made this modification and now kernel boot correctly.
> 
> uClinux-dist/linux-3.x/arch/m68k/include/asm/m527xsim.h
> 
> /*
>  *    FEC ethernet module.
>  */
>  #define    MCFFEC_BASE0        (MCF_IPSBAR + 0x1000)
>  #define    MCFFEC_SIZE0        0x800
> 
> +#ifdef CONFIG_M5275
>  #define    MCFFEC_BASE1        (MCF_IPSBAR + 0x1800)
>  #define    MCFFEC_SIZE1        0x800
> +#endif

Yes, that is broken. That looks to be the right place to fix it here too.
I'll generate a fix for mainline.

The next uclinux-dist will be based around a linux-3.18 kernel, and
I will fix it in there too.

Thanks
Greg




> Linux version 3.10.0-uc0 (root@debian-st8) (gcc version 4.2.4) #15 Tue
> Feb 10 09:38:33 CET 2015
> 
> 
> uClinux/COLDFIRE(m527x)
> COLDFIRE port done by Greg Ungerer, [email protected]
> Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne
> Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 2040
> Kernel command line: console=ttyS1,19200
> PID hash table entries: 2048 (order: 0, 8192 bytes)
> Dentry cache hash table entries: 2048 (order: 0, 8192 bytes)
> Inode-cache hash table entries: 2048 (order: 0, 8192 bytes)
> Sorting __ex_table...
> Memory: 13448k/13448k available (1408k kernel code, 1464k data, 64k init)
> Virtual kernel memory layout:
>     vector  : 0x00000000 - 0x00000400   (   1 KiB)
>     kmap    : 0x00000000 - 0xffffffff   (4095 MiB)
>     vmalloc : 0x00000000 - 0xffffffff   (4095 MiB)
>     lowmem  : 0x00000000 - 0x01000000   (  16 MiB)
>       .init : 0x001c0000 - 0x001d0000   (  64 KiB)
>       .text : 0x00020000 - 0x0017f8b0   (1407 KiB)
>       .data : 0x0017f8b0 - 0x001bffc0   ( 258 KiB)
>       .bss  : 0x001d0000 - 0x001dd238   (  53 KiB)
> SLUB: HWalign=16, Order=0-3, MinObjects=0, CPUs=1, Nodes=8
> NR_IRQS:256
> Calibrating delay loop... 64.71 BogoMIPS (lpj=323584)
> pid_max: default: 32768 minimum: 301
> Mount-cache hash table entries: 1024
> NET: Registered protocol family 16
> bio: create slab <bio-0> at 0
> pps_core: LinuxPPS API ver. 1 registered
> pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
> <[email protected]>
> PTP clock support registered
> Switching to clocksource pit
> NET: Registered protocol family 2
> TCP established hash table entries: 1024 (order: 0, 8192 bytes)
> TCP bind hash table entries: 2048 (order: 0, 8192 bytes)
> TCP: Hash tables configured (established 1024 bind 2048)
> TCP: reno registered
> UDP hash table entries: 512 (order: 0, 8192 bytes)
> UDP-Lite hash table entries: 512 (order: 0, 8192 bytes)
> NET: Registered protocol family 1
> ROMFS MTD (C) 2007 Red Hat, Inc.
> io scheduler noop registered (default)
> ColdFire internal UART serial driver
> ttyS0 at MMIO 0x40000200 (irq = 77) is a ColdFire UART
> ttyS1 at MMIO 0x40000240 (irq = 78) is a ColdFire UART
> console [ttyS1] enabled
> ttyS2 at MMIO 0x40000280 (irq = 79) is a ColdFire UART
> brd: module loaded
> uclinux[mtd]: probe address=0x1dd238 size=0xda000
> uclinux[mtd]: set ROMfs to be root filesystem
> Creating 1 MTD partitions on "ram":
> 0x000000000000-0x0000000da000 : "ROMfs"
> libphy: fec_enet_mii_bus: probed
> bad frame format: 00000000
> PC: [<000fcbe0>] 0x0fcbe0
> SR: 2004  SP: 0084be3c  a2: 001d9394
> d0: 00954000    d1: 00000000    d2: 001aee36    d3: 00954000
> d4: 001bb77a    d5: 00000000    a0: 400018e4    a1: 0084be96
> Process swapper (pid: 1, task=0084c000)
> Frame format=4 eff addr=001aee68 pc=0084bef0
> Stack from 0084be78:
>         00000000 00000000 001aee36 001aee36 001bb73c 0003bb34 001cd5d4
> 001aee68
>         001aee36 000eebac 001aee2c 000ed938 001aee36 001aee68 0017e20a
> 001aee36
>         000edd74 001bb73c 001aee36 00000000 000ec0a0 000edd00 001bb73c
> 000ec3a6
>         001aee36 001bb73c 00000007 0000001c 00942420 001badcc 0083eacc
> 0086eed0
>         000ed744 001badcc 00000000 001bb73c 000edd00 000ecf0c 001bb73c
> 00000007
>         0000001c 00000000 001cf908 001bb73c 001c0096 0003bb34 001cd5d4
> 000ee036
> Call Trace:
>         [<0003bb34>] 0x03bb34
>  [<000eebac>] 0x0eebac
>  [<000ed938>] 0x0ed938
>  [<0017e20a>] 0x17e20a
>  [<000edd74>] 0x0edd74
> 
>         [<000ec0a0>] 0x0ec0a0
>  [<000edd00>] 0x0edd00
>  [<000ec3a6>] 0x0ec3a6
>  [<000ed744>] 0x0ed744
>  [<000edd00>] 0x0edd00
> 
>         [<000ecf0c>] 0x0ecf0c
>  [<001c0096>] 0x1c0096
>  [<0003bb34>] 0x03bb34
>  [<000ee036>] 0x0ee036
>  [<001c9c70>] 0x1c9c70
> 
>         [<001c0096>] 0x1c0096
>  [<0003bb34>] 0x03bb34
>  [<000eecfe>] 0x0eecfe
>  [<001c9c7c>] 0x1c9c7c
>  [<001c01a6>] 0x1c01a6
> 
>         [<001c0096>] 0x1c0096
>  [<001c0668>] 0x1c0668
>  [<001c9c70>] 0x1c9c70
>  [<0017d172>] 0x17d172
>  [<0017d17c>] 0x17d17c
> 
>         [<0017d172>] 0x17d172
>  [<00020598>] 0x020598
> 
> Code: 014c 6000 fc66 43ef 0026 2054 41e8 00e4 <2010> 2280 2054 41e8 00e8
> 2010 4240 4840 3f40 002a 2d
> Disabling lock debugging due to kernel taint
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
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