Adding support for the Intel SS4000-E NAS aka the EM-7210

Tom Judge tom at tomjudge.com
Sat Sep 26 05:47:43 UTC 2009 

<<SNIP -- Previous message removed as I now have a booting (ish) kernel>>

Hi,

Stanislav, Rue first thanks for your help with this.

I have since relised the errors in my ways and now have a booting kernel 
that I can load at 0x01008000.  It seems the first mistake that I made 
was to use the ep80219 as the base for my port. I should have read the 
linux notes more carefully as it states that they can boot the iq31244 
kernel on this board.

I have since then migrated the code to use the iq31244 as the base, and 
have a kernel that kind of boots.

Fist thing I have noticed is I get this error while booting:
pmap_bootstrap: WARNING! wrong cache mode for L2 pte @ 0xc1003c00

I don't really know how to fix this so some pointers would be welcome.

The next problem is that I get the following error when either em or ata 
are compiled into my kernel:

Fatal kernel mode data abort: 'External Linefetch Abort (P)'

If I remove both ata and em from the kernel then the kernel gets to 
trying to mount the rootfs and fails because it wants to mount an NFS 
root from em0.

Bellow is a full backtrace for the em crash and a backtrace for the ata 
crash can be found here:

http://www.tomjudge.com/index.php/SS4000-E/Notes

And my current code can be found as a patch here: 
http://www.tomjudge.com/tmp/em7210.patch


Thanks in advance for the help

Tom


RedBoot> load -b 0x01008000 kernel
Using default protocol (TFTP)
Address offset = 0x40000000
Entry point: 0x01008100, address range: 0x01008000-0x01337274
RedBoot> go
pmap_bootstrap: WARNING! wrong cache mode for L2 pte @ 0xc1003c00
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2009 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-CURRENT #14: Sat Sep 26 05:30:30 UTC 2009
    root at rita.nodomain:/data/arm_build/arm/usr/src/sys/EM-7210
CPU: i80219 400MHz step A-0 (XScale core)
  DC enabled IC enabled WB enabled LABT branch prediction enabled
  32KB/32B 32-way Instruction cache
  32KB/32B 32-way write-back-locking Data cache
real memory  = 536870912 (512 MB)
avail memory = 503738368 (480 MB)
iq0: <Intel 80321> on motherboard
obio0 on iq0
uart0: <16550 or compatible> on obio0
uart0: [FILTER]
uart0: console (115200,n,8,1)
itimer0: <i80321 timer> on iq0
iopwdog0: <i80321 Watchdog, must be tickled every 7 seconds> on iq0
pcib0: <i80321 PCI bus> on iq0
pci0: <PCI bus> on pcib0
Device 1 routed to irq 27
Device 2 routed to irq 30
Device 3 routed to irq 29
Device 5 routed to irq 30
Device 5 routed to irq 29
Device 5 routed to irq 27
em0: <Intel(R) PRO/1000 Network Connection 6.9.14> port 
0xfe400000-0xfe40003f mem 0-0x1ffff,0x20000-0x3ffff irq 27 at device 1.0 
on pci0
Fatal kernel mode data abort: 'External Linefetch Abort (P)'
trapframe: 0xc00faae4
FSR=00000406, FAR=Invalid,  spsr=200000d3
r0 =c13e3c00, r1 =cd5b9000, r2 =00000010, r3 =0000000a
r4 =c317e008, r5 =cd5b9000, r6 =c13e3c00, r7 =c128d4fc
r8 =c317e008, r9 =c1397280, r10=c317e000, r11=c00fab54
r12=c00fab58, ssp=c00fab30, slr=c1022a88, pc =c1022a84

[thread pid 0 tid 100000 ]
Stopped at      e1000_init_script_state_82541+0x24c:    blx     r7
db> bt
Tracing pid 0 tid 100000 td 0xc133b240
db_trace_thread() at db_trace_thread+0xc
scp=0xc1291910 rlv=0xc100d0f0 (db_command_init+0x2a8)
        rsp=0xc00fa7e0 rfp=0xc00fa7fc
        r10=0x00000001 r9=0xc1340d94
        r8=0xc13385c4 r7=0x00000062 r6=0x00000002 r5=0x00000010
        r4=0xc133b240
db_command_init() at db_command_init+0x1d0
scp=0xc100d018 rlv=0xc100cba0 (db_skip_to_eol+0x49c)
        rsp=0xc00fa800 rfp=0xc00fa8a4
        r5=0x00000000 r4=0xc13188d0
db_skip_to_eol() at db_skip_to_eol+0x1d0
scp=0xc100c8d4 rlv=0xc100cd0c (db_command_loop+0x60)
        rsp=0xc00fa8a8 rfp=0xc00fa8b4
        r10=0x00000000 r8=0x00000406
        r7=0xc00faae4 r6=0xc1340d90 r5=0x600000d3 r4=0xc00fa8c0
db_command_loop() at db_command_loop+0xc
scp=0xc100ccb8 rlv=0xc100f050 (X_db_sym_numargs+0xf4)
        rsp=0xc00fa8b8 rfp=0xc00fa9d4
X_db_sym_numargs() at X_db_sym_numargs+0x14
scp=0xc100ef70 rlv=0xc10fc0c4 (kdb_trap+0xa4)
        rsp=0xc00fa9d8 rfp=0xc00faa00
        r4=0x000000c0
kdb_trap() at kdb_trap+0xc
scp=0xc10fc02c rlv=0xc12a1dc4 (badaddr_read+0x280)
        rsp=0xc00faa04 rfp=0xc00faa20
        r10=0x00000000 r9=0xc1397280
        r8=0xc00faae4 r7=0x00000406 r6=0x00000000 r5=0x00000406
        r4=0xc00faae4
badaddr_read() at badaddr_read+0xfc
scp=0xc12a1c40 rlv=0xc12a225c (prefetch_abort_handler+0x440)
        rsp=0xc00faa24 rfp=0xc00faa44
        r6=0xc133b240 r5=0xc00faef8
        r4=0xc00faae4
prefetch_abort_handler() at prefetch_abort_handler+0x378
scp=0xc12a2194 rlv=0xc12a2428 (data_abort_handler+0x110)
        rsp=0xc00faa48 rfp=0xc00faae0
        r7=0xc133b240 r6=0xc13e3c00
        r5=0xc00faef8 r4=0xc133af78
data_abort_handler() at data_abort_handler+0xc
scp=0xc12a2324 rlv=0xc129334c (address_exception_entry+0x50)
        rsp=0xc00faae4 rfp=0xc00fab54
        r10=0xc317e000 r9=0xc1397280
        r8=0xc317e008 r7=0xc128d4fc r6=0xc13e3c00 r5=0xffff1004
        r4=0xc317e008
e1000_init_script_state_82541() at e1000_init_script_state_82541+0x20c
scp=0xc1022a44 rlv=0xc10319d0 (e1000_init_nvm_params+0x24)
        rsp=0xc00fab58 rfp=0xc00fab64
        r7=0xc0000002 r6=0x00000001
        r5=0xc317e008 r4=0x00000000
e1000_init_nvm_params() at e1000_init_nvm_params+0xc
scp=0xc10319b8 rlv=0xc1032914 (e1000_setup_init_funcs+0x150)
        rsp=0xc00fab68 rfp=0xc00fab80
e1000_setup_init_funcs() at e1000_setup_init_funcs+0xc
scp=0xc10327d0 rlv=0xc101d8e0 (db_write_cmd+0xa85c)
        rsp=0xc00fab84 rfp=0xc00fac0c
        r6=0x0000443c r5=0xc1397280
        r4=0x00004400
db_write_cmd() at db_write_cmd+0x9ee8
scp=0xc101cf6c rlv=0xc10f6d1c (device_attach+0x2c8)
        rsp=0xc00fac10 rfp=0xc00fac4c
        r10=0xc1397280 r9=0x00000009
        r8=0xffffffff r7=0xc10f53c4 r6=0xc13972cc r5=0x80000000
        r4=0xc1397300
device_attach() at device_attach+0xc
scp=0xc10f6a60 rlv=0xc10f80e0 (device_probe_and_attach+0x34)
        rsp=0xc00fac50 rfp=0xc00fac60
        r10=0xc1397300 r8=0xffffffff
        r7=0xc10f53c4 r6=0x00000000 r5=0x00000000 r4=0xc1397280
device_probe_and_attach() at device_probe_and_attach+0xc
scp=0xc10f80b8 rlv=0xc10f8104 (bus_generic_attach+0x20)
        rsp=0xc00fac64 rfp=0xc00fac74
        r4=0xc1397280
bus_generic_attach() at bus_generic_attach+0xc
scp=0xc10f80f0 rlv=0xc105c318 (pci_add_children+0x240)
        rsp=0xc00fac78 rfp=0xc00fac98
        r4=0xc1397300
pci_add_children() at pci_add_children+0x154
scp=0xc105c22c rlv=0xc10f6d1c (device_attach+0x2c8)
        rsp=0xc00fac9c rfp=0xc00facd8
        r6=0xc139734c r5=0x80000000
        r4=0xc13da400
device_attach() at device_attach+0xc
scp=0xc10f6a60 rlv=0xc10f80e0 (device_probe_and_attach+0x34)
        rsp=0xc00facdc rfp=0xc00facec
        r10=0xc13da400 r8=0xffffffff
        r7=0x00000000 r6=0xc13da400 r5=0xc13b6318 r4=0xc1397300
device_probe_and_attach() at device_probe_and_attach+0xc
scp=0xc10f80b8 rlv=0xc10f8104 (bus_generic_attach+0x20)
        rsp=0xc00facf0 rfp=0xc00fad00
        r4=0xc1397300
bus_generic_attach() at bus_generic_attach+0xc
scp=0xc10f80f0 rlv=0xc12a7824 (i80321_sdram_bounds+0x860)
        rsp=0xc00fad04 rfp=0xc00fad20
        r4=0xc13b6360
i80321_sdram_bounds() at i80321_sdram_bounds+0x6f4
scp=0xc12a76b8 rlv=0xc10f6d1c (device_attach+0x2c8)
        rsp=0xc00fad24 rfp=0xc00fad60
        r7=0xc10f53c4 r6=0xc13da44c
        r5=0x80000000 r4=0xc13da680
device_attach() at device_attach+0xc
scp=0xc10f6a60 rlv=0xc10f80e0 (device_probe_and_attach+0x34)
        rsp=0xc00fad64 rfp=0xc00fad74
        r10=0xc13da680 r8=0xc13da680
        r7=0x40000004 r6=0xc13e3c00 r5=0x00000000 r4=0xc13da400
device_probe_and_attach() at device_probe_and_attach+0xc
scp=0xc10f80b8 rlv=0xc10f8104 (bus_generic_attach+0x20)
        rsp=0xc00fad78 rfp=0xc00fad88
        r4=0xc13da400
bus_generic_attach() at bus_generic_attach+0xc
scp=0xc10f80f0 rlv=0xc12a8460 (iq80321_attach+0x370)
        rsp=0xc00fad8c rfp=0xc00fadb8
        r4=0xc12de3c8
iq80321_attach() at iq80321_attach+0xc
scp=0xc12a80fc rlv=0xc10f6d1c (device_attach+0x2c8)
        rsp=0xc00fadbc rfp=0xc00fadf8
        r8=0xffffffff r7=0xc10f53c4
        r6=0xc13da6cc r5=0x80000000 r4=0xc13da700
device_attach() at device_attach+0xc
scp=0xc10f6a60 rlv=0xc10f80e0 (device_probe_and_attach+0x34)
        rsp=0xc00fadfc rfp=0xc00fae0c
        r10=0xc13da700 r8=0xffffffff
        r7=0xc10f53c4 r6=0xc13da74c r5=0x80000000 r4=0xc13da680
device_probe_and_attach() at device_probe_and_attach+0xc
scp=0xc10f80b8 rlv=0xc10f8104 (bus_generic_attach+0x20)
        rsp=0xc00fae10 rfp=0xc00fae20
        r4=0xc13da680
bus_generic_attach() at bus_generic_attach+0xc
scp=0xc10f80f0 rlv=0xc1296270 (minidumpsys+0xaf4)
        rsp=0xc00fae24 rfp=0xc00fae34
        r4=0xc13da700
minidumpsys() at minidumpsys+0xae4
scp=0xc1296260 rlv=0xc10f6d1c (device_attach+0x2c8)
        rsp=0xc00fae38 rfp=0xc00fae74
        r4=0xc12d1318
device_attach() at device_attach+0xc
scp=0xc10f6a60 rlv=0xc10f80e0 (device_probe_and_attach+0x34)
        rsp=0xc00fae78 rfp=0xc00fae88
        r10=0x0000000a r8=0x00000000
        r7=0xa10081a4 r6=0xc13dab80 r5=0xc1335374 r4=0xc13da700
device_probe_and_attach() at device_probe_and_attach+0xc
scp=0xc10f80b8 rlv=0xc10f83c4 (bus_generic_new_pass+0xe4)
        rsp=0xc00fae8c rfp=0xc00faea4
        r4=0xc13da700
bus_generic_new_pass() at bus_generic_new_pass+0xc
scp=0xc10f82ec rlv=0xc10f43c0 (bus_set_pass+0x98)
        rsp=0xc00faea8 rfp=0xc00faec0
        r6=0x7fffffff r5=0xc13dab80
        r4=0xc13f1a80
bus_set_pass() at bus_set_pass+0xc
scp=0xc10f4334 rlv=0xc10f4408 (root_bus_configure+0x14)
        rsp=0xc00faec4 rfp=0xc00faed0
        r6=0x00000006 r5=0xa10081b0
        r4=0xc12e0358
root_bus_configure() at root_bus_configure+0xc
scp=0xc10f4400 rlv=0xc128c310 (xdr_sizeof+0x1d0)
        rsp=0xc00faed4 rfp=0xc00faee0
xdr_sizeof() at xdr_sizeof+0x1cc
scp=0xc128c30c rlv=0xc1083620 (mi_startup+0xdc)
        rsp=0xc00faee4 rfp=0xc00faef4
mi_startup() at mi_startup+0xc
scp=0xc1083550 rlv=0xc1008248 (btext+0x148)
        rsp=0xc00faef8 rfp=0x00000000
        r4=0xa1008288
db>

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