uboot环境变量与内核MTD分区关系

        hugepages=      [HW,IA-32,IA-64] Maximal number of HugeTLB pages.

        noirqbalance    [IA-32,SMP,KNL] Disable kernel irq balancing

        i8042.direct    [HW] Put keyboard port into non-translated mode

        i8042.dumbkbd   [HW] Pretend that controlled can only read data from

                             keyboard and can not control its state

                             (Don't attempt to blink the leds)

        i8042.noaux     [HW] Don't check for auxiliary (== mouse) port

        i8042.nokbd     [HW] Don't check/create keyboard port

        i8042.nomux     [HW] Don't check presence of an active multiplexing

                             controller

        i8042.nopnp     [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX

                             controllers

        i8042.panicblink=

                        [HW] Frequency with which keyboard LEDs should blink

                             when kernel panics (default is 0.5 sec)

        i8042.reset     [HW] Reset the controller during init and cleanup

        i8042.unlock    [HW] Unlock (ignore) the keylock

        i810=           [HW,DRM]

        i8k.ignore_dmi  [HW] Continue probing hardware even if DMI data

                        indicates that the driver is running on unsupported

                        hardware.

        i8k.force       [HW] Activate i8k driver even if SMM BIOS signature

                        does not match list of supported models.

        i8k.power_status

                        [HW] Report power status in /proc/i8k

                        (disabled by default)

        i8k.restricted  [HW] Allow controlling fans only if SYS_ADMIN

                        capability is set.

        ibmmcascsi=     [HW,MCA,SCSI] IBM MicroChannel SCSI adapter

                        See Documentation/mca.txt.

        icn=            [HW,ISDN]

                        Format: [,[,[,]]]

        ide=            [HW] (E)IDE subsystem

                        Format: ide=nodma or ide=doubler or ide=reverse

                        See Documentation/ide.txt.

        ide?=           [HW] (E)IDE subsystem

                        Format: ide?=noprobe or chipset specific parameters.

                        See Documentation/ide.txt.

        idebus=         [HW] (E)IDE subsystem - VLB/PCI bus speed

                        See Documentation/ide.txt.

        idle=           [HW]

                        Format: idle=poll or idle=halt

        ihash_entries=  [KNL]

                        Set number of hash buckets for inode cache.

        in2000=         [HW,SCSI]

                        See header of drivers/scsi/in2000.c.

        init=           [KNL]

                        Format:

                        Run specified binary instead of /sbin/init as init

                        process.

        initcall_debug  [KNL] Trace initcalls as they are executed.  Useful

                        for working out where the kernel is dying during

                        startup.

        initrd=         [BOOT] Specify the location of the initial ramdisk

        inport.irq=     [HW] Inport (ATI XL and Microsoft) busmouse driver

                        Format:

        inttest=        [IA64]

        io7=            [HW] IO7 for Marvel based alpha systems

                        See comment before marvel_specify_io7 in

                        arch/alpha/kernel/core_marvel.c.

        ip=             [IP_PNP]

                        See Documentation/nfsroot.txt.

        ip2=            [HW] Set IO/IRQ pairs for up to 4 IntelliPort boards

                        See comment before ip2_setup() in drivers/char/ip2.c.

        ips=            [HW,SCSI] Adaptec / IBM ServeRAID controller

                        See header of drivers/scsi/ips.c.

        irqfixup        [HW]

                        When an interrupt is not handled search all handlers

                        for it. Intended to get systems with badly broken

                        firmware running.

        irqpoll         [HW]

                        When an interrupt is not handled search all handlers

                        for it. Also check all handlers each timer

                        interrupt. Intended to get systems with badly broken

                        firmware running.

        isapnp=         [ISAPNP]

                        Format: ,,,

        isolcpus=       [KNL,SMP] Isolate CPUs from the general scheduler.

                        Format: ,...,

                        This option can be used to specify one or more CPUs

                        to isolate from the general SMP balancing and scheduling

                        algorithms. The only way to move a process onto or off

                        an 'isolated' CPU is via the CPU affinity syscalls.

                        begins at 0 and the maximum value is

                        'number of CPUs in system - 1'.

                        This option is the preferred way to isolate CPUs. The

                        alternative -- manually setting the CPU mask of all

                        tasks in the system -- can cause problems and

                        suboptimal load balancer performance.

        isp16=          [HW,CD]

                        Format: ,,,