u-boot引导后到这停止了，内核启动不起来，多数是因为u-boot传递的参数不正确造成的，我第一个错误是，OMAP的输出为ttyS2改成ttyO2，还是不行，加入内核调试。
kernel hack–>debug earlyprintk
show timing information on printk
Uncompressing Linux… done, booting the kernel.[ 0.000000] Linux version 3.0.0-rc5brose-g0e90ed0-dirty () (gcc version 4.5.2 (Sourcery G++ Lite 2011.03-41) ) #2 SMP Sun Apr 15 02:15:22 CST 2012[ 0.000000] CPU: ARMv7 Processor [411fc092] revision 2 (ARMv7), cr=10c53c7f[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine: OMAP4 Panda board[ 0.000000] bootconsole [earlycon0] enabled[ 0.000000] Reserving 33554432 bytes SDRAM for VRAM[ 0.000000] Memory policy: ECC disabled, Data cache writealloc[ 0.000000] OMAP4430 ES2.2[ 0.000000] SRAM: Mapped pa 0x40300000 to va 0xfe400000 size: 0xe000[ 0.000000] powerdomain: waited too long for powerdomain dss_pwrdm to complete transition[ 0.000000] PERCPU: Embedded 7 pages/cpu @c10ec000 s7040 r8192 d13440 u32768[ 0.000000] Unhandled fault: alignment exception (0x001) at 0xc068ff5a[ 0.000000] Internal error: : 1 [#1] SMP[ 0.000000] Modules linked in:[ 0.000000] CPU: 0 Not tainted (3.0.0-rc5brose-g0e90ed0-dirty #2)[ 0.000000] PC is at pcpu_dump_alloc_info+0xc/0x248[ 0.000000] LR is at pcpu_setup_first_chunk+0x49c/0x78c[ 0.000000] pc : [<c011dd10>] lr : [<c00203a8>] psr: 200001d3[ 0.000000] sp : c074bed8 ip : 00000002 fp : 00008000[ 0.000000] r10: c10f3000 r9 : c10fb040 r8 : c10fb020[ 0.000000] r7 : c07606a4 r6 : c10ec000 r5 : 00003480 r4 : c10e9140[ 0.000000] r3 : c068ff5a r2 : 00000004 r1 : c10e9140 r0 : c0690241[ 0.000000] Flags: nzCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel[ 0.000000] Control: 10c53c7f Table: 8000404a DAC: 00000017[ 0.000000] Process swapper (pid: 0, stack limit = 0xc074a2f8)[ 0.000000] Stack: (0xc074bed8 to 0xc074c000)
经过各种google终于在某个mainlist上找到问题的解决办法，加入下面这个参数编译
EXTRA_CFLAGS=-mno-unaligned-access
理想的路总是为有信心的人预备着
