ずっと放置してたNITROGEN6Xをさわりだす。

U-Boot 2009.08-00495-g10adc6d (Apr 24 2012 - 13:27:04)

CPU:   Freescale i.MX 6 family 0.0V at 792 MHz
Temperature:   can't get valid data!
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock     : 66000000Hz
ipg per clock : 66000000Hz
uart clock    : 80000000Hz
cspi clock    : 60000000Hz
ahb clock     : 132000000Hz
axi clock   : 264000000Hz
emi_slow clock: 29333333Hz
ddr clock     : 528000000Hz
usdhc1 clock  : 200000000Hz
usdhc2 clock  : 200000000Hz
usdhc3 clock  : 200000000Hz
usdhc4 clock  : 200000000Hz
nfc clock     : 24000000Hz
Board: MX6Q-SABRELITE:[ POR]
Boot Device: I2C
I2C:   ready
DRAM:   1 GB
MMC:   FSL_USDHC: 0,FSL_USDHC: 1
JEDEC ID: 0xbf:0x25:0x41
Reading SPI NOR flash 0xc0000 [0x2000 bytes] -> ram 0x276009b8
SUCCESS

In:    serial
Out:   serial
Err:   serial
Checking for recovery command file...
** Bad partition 6 **
Card did not respond to voltage select!
** Bad partition 6 **
MMC Device 2 not found
MMC Device 2 not found
** Block device MMC 2 not supported
Net:   got MAC address from IIM: 00:19:b8:**:**:**
FEC0 [PRIME]


MX6Q SABRELITE U-Boot > printenv
bootdelay=3
baudrate=115200
ipaddr=192.168.1.103
serverip=192.168.1.101
netmask=255.255.255.0
loadaddr=0x10800000
rd_loadaddr=0x11000000
netdev=eth0
ethprime=FEC0
bootargs_base=setenv bootargs console=ttymxc1,115200 video=mxcfb0:dev=ldb,LDB-XGA,if=RGB666 video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24
bootargs_nfs=setenv bootargs ${bootargs} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp rw rootwait enable_wait_mode=off
bootcmd_net=dhcp && run bootargs_base bootargs_nfs && bootm
bootargs_mmc=setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootwait rw
bootcmd_mmc=for disk in 0 1 ; do mmc dev ${disk} ;for fs in fat ext2 ; do ${fs}load mmc ${disk}:1 10008000 /6q_bootscript && source 10008000 ; done ; done
clearenv=sf probe 1 && sf erase 0xc0000 0x2000 && echo restored environment to factory default
upgradeu=for disk in 0 1 ; do mmc dev ${disk} ;for fs in fat ext2 ; do ${fs}load mmc ${disk}:1 10008000 /6q_upgrade && source 10008000 ; done ; done
bootfile=uImage
nfsroot=/your/nfs/dir
bootcmd=run bootcmd_mmc
ethact=FEC0
stdin=serial
stdout=serial
stderr=serial


MX6Q SABRELITE U-Boot > tftpboot netbsd.bin
Found phy at 6
FEC: Link is Up 796d
Using FEC0 device
TFTP from server 10.0.0.1; our IP address is 10.0.0.2
Filename 'n'.
Load address: 0x10800000
Loading: #################################################################
#################################################################
##############################
done
Bytes transferred = 2340672 (23b740 hex)
MX6Q SABRELITE U-Boot > go 10800000
## Starting application at 0x10800000 ...
@

以前はしもとさんからもらったパッチをあてて適当に修正したら a9_start() までは来た。
「@」が a9_start() の先頭付近にある XPUTC(#64) によるもので、とりあえずここで止まった。
XPUTC(#65) (「A」が出力されるはず…)にも来てないということは armv7_icache_inv_all が動いてないのか。謎。