UM0851 datasheet(22/245 Pages) STMICROELECTRONICS

22 / 245 page

Boot loader overview

UM0851

22/245

Doc ID 16604 Rev 2

setenv bootargs "initrd=0x00800040,7M

…"

●

init=

This argument runs a specified binary (ex: /bin/sh) instead of /sbin/init as init process.

setenv bootargs "init=/bin/sh

…"

●

root=

●

rootdelay=

●

rootfstype=

●

nfsroot=

These arguments provide information about how the root file system must be mounted.

/* NFS mount */

setenv bootargs "root=/dev/nfs nfsroot=192.168.1.1:/home/spear600/rootfs …"

/* MTD mount (NAND/NOR flash) */

"root=/dev/mtdblock3 rootfstype=jffs2 ..."

/* RAMDisk mount */

setenv bootargs "root=/dev/ram0 initrd=0x00800040,7M …"

/* USB flash mount */

setenv bootargs "root=/dev/sda1 rootdelay=5 …"

●

"ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>

This argument shows how the IP address is determined.

setenv bootargs

"ip=192.168.1.13:192.168.1.1:192.168.1.1:255.255.255.0:spear600:eth0:off …"

●

mtdparts=

This argument overwrites the default MTD Flash partitioning.

mtdparts=<mtddef>[;<mtddef]

:= <mtd-id>:<partdef>[,<partdef>]

<partdef> := <size>[@offset][<name>][ro][lk]

<mtd-id>

:= unique name used in mapping driver/device (mtd->name)

<size>

:= standard linux memsize OR "-" to denote all remaining space

<name>

:= '(' NAME ')'

setenv bootargs

"mtdparts=SMI-NOR0:2M(PARTITION-1),3M(PARTITION-2)... "

UM0851 Datasheet(PDF) 22 Page - STMicroelectronics

UM0851 Datasheet(HTML) 22 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL