Linux, U-Boot, and Root File Systems

It seems I'm not done with silly mistakes.

The flash device is 16 bit, but it is being used in 8-bit mode.

Switching to ".width = 1" solves the problem of detecting two devices and twice as much flash.

It also eliminated the CLEANMARKER error.

Now, I think I am down to flash driver problems.

The Spansion part is slightly different from the original AMD part. Specifically, the erase commands need to be written to specific offsets in the flash. For the original part, it was sufficient to write the commands to the start address of the flash.

The older sector erase sequence (for flash starting at address 0x0, and sector to erase at SA) was:

Address Data

---------------------

0x0 0xAA

0x0 0x55

0x0 0x80

0x0 0xAA

0x0 0x55

SA 0x30

New Sector Erase Sequence:

Address Data

---------------------

0xAAA 0xAA

0x555 0x55

0xAAA 0x80

0xAAA 0xAA

0x555 0x55

SA 0x30

Here is the new boot log output. It does eventually get to a command prompt, but it keeps generating errors about erase and write errors.

Am I on the right track here?

Linux version 2.6.30-00494-g84a224b-dirty (pinta@drake-linux.fw5540.net) (gcc version 4.1.2)# 47 Tue Oct 6 14:08:55 EDT 2009
console  enabled
Early printk initialized
Linux/Nios II-MMU
init_bootmem_node(?,0x6391, 0x6000, 0x8000)
free_bootmem(0x6391000, 0x1c6f000)
reserve_bootmem(0x6391000, 0x400)
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 8128
Kernel command line:
NR_IRQS:32
PID hash table entries: 128 (order: 7, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
We have 32768 pages of RAM
Memory available: 28824k/3648k RAM, 0k/0k ROM (2119k kernel code, 1528k data)
Calibrating delay loop... 41.98 BogoMIPS (lpj=209920)
Mount-cache hash table entries: 512
net_namespace: 492 bytes
NET: Registered protocol family 16
init_BSP(): registering device resources
bio: create slab <bio-0> at 0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
NET: Registered protocol family 1
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
JFFS2: default compression mode: priority
msgmni has been set to 56
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
ttyJ0 at MMIO 0x21208b0 (irq = 1) is a Altera JTAG UART
ttyS0 at MMIO 0x2120840 (irq = 4) is a Altera UART
console handover: boot  -> real 
ttyS1 at MMIO 0x2120b00 (irq = 8) is a Altera UART
smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>
eth0: SMC91C11xFD (rev 2) at e2110300 IRQ 6 
eth0: Ethernet addr: 00:07:ed:0f:0a:53
physmap platform flash device: 01000000 at 00000000
Physmap Width: 1
physmap-flash.0: Found 1 x16 devices at 0x0 in 8-bit bank in cfi_chip_setup
 Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
cmdlinepart partition parsing not available
RedBoot partition parsing not available
Using physmap partition information
Creating 3 MTD partitions on "physmap-flash.0":
0x000000000000-0x000000060000 : "U-Boot"
0x000000060000-0x000000200000 : "uImage"
0x000000200000-0x000001000000 : "romfs/jffs2"
TCP cubic registered
NET: Registered protocol family 10
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
/home/pinta/projects/micropump/nios_linux/nios2-linux/linux-2.6/drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: link down
ADDRCONF(NETDEV_UP): eth0: link is not ready
IP-Config: Unable to set interface netmask (-22).
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00120000: 0x55ff instead
JFFS2: Erase block at 0x00120000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x002b0000: 0x55ff instead
JFFS2: Erase block at 0x002b0000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00440000: 0x55ff instead
JFFS2: Erase block at 0x00440000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x005d0000: 0x55ff instead
JFFS2: Erase block at 0x005d0000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00760000: 0x55ff instead
JFFS2: Erase block at 0x00760000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x008f0000: 0x55ff instead
JFFS2: Erase block at 0x008f0000 is not formatted. It will be erased
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00010: 0xd76a instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00014: 0x5000 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00018: 0x6a00 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a0001c: 0x0040 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00020: 0x0068 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00024: 0x40ff instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00028: 0x6880 instead
Empty flash at 0x00a0002c ends at 0x00a0004c
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a0004c: 0x0400 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00050: 0x0404 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00a00054: 0x0704 instead
Further such events for this erase block will not be printed