[U-Boot-Users] Flash write crash on MPC8548CDS

[ksi at koi8.net]

1.3.2-rc1-gb6f29c84-dirty crashes on the very first attempt to write in
Flash. After that it gets back to the prompt and _ALL_ subsequent writes
work just fine. Only the very first one fails.

Looks like something is not initialized properly. Before I start digging
does anyone has a fix for it? This is quite new platform for me so it could
take time for me to come up with a fix...

Here is what happens on the very first Flash write attempt (original config
with no changes, stock MPC8548CDS with SW2[1..2] set to "off-off", was
"off-on" out of the box for booting Freescale's U-Boot 1.1.something from
alternate Flash.)

=== Cut ===
U-Boot 1.3.2-rc1-gb6f29c84-dirty (Feb 19 2008 - 13:34:21)

CPU:   8548_E, Version: 2.1, (0x80390021)
Core:  E500, Version: 2.2, (0x80210022)
Clock Configuration:
        CPU:1320 MHz, CCB: 528 MHz,
        DDR: 264 MHz, LBC:  66 MHz
L1:    D-cache 32 kB enabled
        I-cache 32 kB enabled
Board: CDS Version 0x13, PCI Slot 1
CPU Board Revision 0.0 (0x0000)
I2C:   ready
DRAM:  Initializing
     SDRAM: 64 MB
     DDR: 256 MB
FLASH: 16 MB
L2 cache 512KB: enabled
     PCI: 64 bit, unknown MHz, async, host, external-arbiter
                Scanning PCI bus 00
PCI on bus 00 - 02

     PCIE connected to slot as Root Complex (base address e000a000)
PCIE on bus 3 - 3
In:    serial
Out:   serial
Err:   serial
Net:   eTSEC0, eTSEC1, eTSEC2, eTSEC3
Hit any key to stop autoboot:  0 
=> saveenv
Saving Environment to Flash...
Un-Protected 4 sectors
Erasing Flash...
.... done
Erased 4 sectors
Writing to Flash... External Interrupt Exception at PC: ffc1e2c, SR: 29200,
vector=500 irq IACK0 at e00600a0=2
NIP: 0FFC1E2C XER: 00000000 LR: 0FFCEBF4 REGS: 0ff5dc50 TRAP: 0500 DAR:
00000000
MSR: 00029200 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 00

GPR00: 00029200 0FF5DD40 0FF9DF78 00010000 00000000 00000555 FF800AAA
32C45D1D 
GPR08: 00000000 FF810000 0FF5DD2B 0FFF5404 0FF5DBA0 40ED2D4B 0FFF5100
00000000 
GPR16: 0FFEC778 0FFEE784 00000000 00000000 00000000 00000000 00000000
00000000 
GPR24: 0FF5DD78 0FF5DD88 00000001 FFFFF146 E4010000 0FF5DD33 0FFF572C
0FFF5404 
Call backtrace: 
0FF5DD33 0FFCEB8C 0FFCF8C8 0FFDD27C 0FFDCCCC 0FFD9B50 0FFDF230 
0FFDE944 0FFDEAB0 0FFD2384 0FFC9810 0FFC15FC 
Skipping current instr, Returning to 0x0ffc1e30
done
Protected 4 sectors
=>
=== Cut ===

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