抱歉，前几天回校处理毕业的事情了没来得及回复您，实在是对不起！
我现在的情况是这样的，公司拿给我的板子是参照官方的原理图做的，其中修改了ddr,emmc,最开始我以为这些修改并没有多大的关系，认为直接就可以移植驱动，所以就发了这个帖子，最后发现我想的太简单了，就上论坛看帖子，参考帖子上的资料改了内存大小，其他的改不改我就不知道了，就尝试跑了一下，发现内核依然起不来，出现了uboot自启动的情况，这是什么原因，可以帮我分析一下吗？
Xshell 4 (Build 0131)
Copyright (c) 2002-2014 NetSarang Computer, Inc. All rights reserved.
Type `help' to learn how to use Xshell prompt.
Xshell:\>
Connecting to COM5...
Connected.
U-Boot 2009.08 (Jun 23 2015 - 20:16:32)
CPU: Freescale i.MX6 family TO1.5 at 792 MHz
Thermal sensor with ratio = 183
Temperature: 25 C, calibration data 0x5874ed69
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: 132000000Hz
ddr clock : 528000000Hz
usdhc1 clock : 198000000Hz
usdhc2 clock : 198000000Hz
usdhc3 clock : 198000000Hz
usdhc4 clock : 198000000Hz
nfc clock : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015 [POR ]
Boot Device: SD
I2C: ready
DRAM: 2 GB
MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
In: serial
Out: serial
Err: serial
i2c: I2C1 SDA is low, start i2c recovery...
I2C1 Recovery success
Net: got MAC address from IIM: 00:00:00:00:00:00
FEC0 [PRIME]
Hit any key to stop autoboot: 0
mmc2 is current device
MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK
## Booting kernel from Legacy Image at 10800000 ...
Image Name: Linux-3.0.35-2666-gbdde708
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3866412 Bytes = 3.7 MB
Load Address: 10008000
Entry Point: 10008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 3.0.35-2666-gbdde708 (lhs@ubuntu) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #6 SMP PREEMPT Thu Jun 4 23:02:29 PDT 2015
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board
Ignoring unrecognised tag 0x54410008
Memory policy: ECC disabled, Data cache writealloc
CPU identified as i.MX6Q, unknown revision
PERCPU: Embedded 7 pages/cpu @8c80e000 s5440 r8192 d15040 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 454656
Kernel command line: console=ttymxc0,115200 ip=192.168.1.103 root=/dev/mmcblk1p1 rootwait rw
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 131072 (order: 7, 524288 bytes)
Memory: 512MB 1280MB = 1792MB total
Memory: 1805356k/1805356k available, 291796k reserved, 360448K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xf4600000 - 0xffe00000 ( 184 MB)
vmalloc : 0xea800000 - 0xf2000000 ( 120 MB)
lowmem : 0x80000000 - 0xea000000 (1696 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x8003c000 ( 208 kB)
.text : 0x8003c000 - 0x80a8f8f4 (10575 kB)
.data : 0x80a90000 - 0x80af3e40 ( 400 kB)
.bss : 0x80af3e64 - 0x80b41d8c ( 312 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:624
MXC GPIO hardware
sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
arm_max_freq=1.2GHz
MXC_Early serial console at MMIO 0x2020000 (options '115200')
bootconsole [ttymxc0] enabled
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
CPU1: Booted secondary processor
CPU2: Booted secondary processor
CPU3: Booted secondary processor
Brought up 4 CPUs
SMP: Total of 4 processors activated (6324.22 BogoMIPS).
print_constraints: dummy:
NET: Registered protocol family 16
print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal
print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal
print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal
print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal
print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal
print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal
//到达这一步就uboot就自动重启了
U-Boot 2009.08 (Jun 23 2015 - 20:16:32)
CPU: Freescale i.MX6 family TO1.5 at 792 MHz
Thermal sensor with ratio = 183
Temperature: 32 C, calibration data 0x5874ed69
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: 132000000Hz
ddr clock : 528000000Hz
usdhc1 clock : 198000000Hz
usdhc2 clock : 198000000Hz
usdhc3 clock : 198000000Hz
usdhc4 clock : 198000000Hz
nfc clock : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015 [POR ]
Boot Device: SD
I2C: ready
DRAM: 2 GB
MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
In: serial
Out: serial
Err: serial
Net: got MAC address from IIM: 00:00:00:00:00:00
FEC0 [PRIME]
Hit any key to stop autoboot: 0
mmc2 is current device
MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK
## Booting kernel from Legacy Image at 10800000 ...
Image Name: Linux-3.0.35-2666-gbdde708
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3866412 Bytes = 3.7 MB
Load Address: 10008000
Entry Point: 10008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 3.0.35-2666-gbdde708 (lhs@ubuntu) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #6 SMP PREEMPT Thu Jun 4 23:02:29 PDT 2015
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board
Ignoring unrecognised tag 0x54410008
Memory policy: ECC disabled, Data cache writealloc
CPU identified as i.MX6Q, unknown revision
PERCPU: Embedded 7 pages/cpu @8c80e000 s5440 r8192 d15040 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 454656
Kernel command line: console=ttymxc0,115200 ip=192.168.1.103 root=/dev/mmcblk1p1 rootwait rw
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 131072 (order: 7, 524288 bytes)
Memory: 512MB 1280MB = 1792MB total
Memory: 1805356k/1805356k available, 291796k reserved, 360448K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xf4600000 - 0xffe00000 ( 184 MB)
vmalloc : 0xea800000 - 0xf2000000 ( 120 MB)
lowmem : 0x80000000 - 0xea000000 (1696 MB)
pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
modules : 0x7f000000 - 0x7fe00000 ( 14 MB)
.init : 0x80008000 - 0x8003c000 ( 208 kB)
.text : 0x8003c000 - 0x80a8f8f4 (10575 kB)
.data : 0x80a90000 - 0x80af3e40 ( 400 kB)
.bss : 0x80af3e64 - 0x80b41d8c ( 312 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:624
MXC GPIO hardware
sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
arm_max_freq=1.2GHz
MXC_Early serial console at MMIO 0x2020000 (options '115200')
bootconsole [ttymxc0] enabled
Console: colour dummy device 80x30
Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
CPU1: Booted secondary processor
CPU2: Booted secondary processor
CPU3: Booted secondary processor
Brought up 4 CPUs
SMP: Total of 4 processors activated (6324.22 BogoMIPS).
print_constraints: dummy:
NET: Registered protocol family 16
print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal
print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal
print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal
print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal
print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal
print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal
U-Boot 2009.08 (Jun 23 2015 - 20:16:32)
CPU: Freescale i.MX6 family TO1.5 at 792 MHz
Thermal sensor with ratio = 183
Temperature: 35 C, calibration data 0x5874ed69
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: 132000000Hz
ddr clock : 528000000Hz
usdhc1 clock : 198000000Hz
usdhc2 clock : 198000000Hz
usdhc3 clock : 198000000Hz
usdhc4 clock : 198000000Hz
nfc clock : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015 [POR ]
Boot Device: SD
I2C: ready
DRAM: 2 GB
MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
In: serial
Out: serial
Err: serial
Net: got MAC address from IIM: 00:00:00:00:00:00
FEC0 [PRIME]
Hit any key to stop autoboot: 0
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