Version 2.4 of Minicom (the version in Ubuntu 10.04) has a bug where scripts never ever exit. In this case, the variables actually get set properly so after the script has run for a while, exit Minicom, restart it, and run ‘printenv’ to see if the changes took effect.<\/div>\n
Make sure oe_uImage.bin is in your tftpboot dir then run the tftp kernel command.
\nIf you have TFTPBOOT_DIR set in your env-oe.sh script then this should happen automatically after building.<\/p>\n
U-Boot> run tftp_kernel\r\nmacb0: link up, 100Mbps full-duplex (lpa: 0x45e1)\r\nUsing macb0 device\r\nTFTP from server 192.168.2.2; our IP address is 192.168.2.1\r\nFilename 'oe_uImage.bin'.\r\nLoad address: 0x21400000\r\nLoading: #################################################################\r\n#################################################################\r\n#################################################################\r\n#################################################################\r\n#################################################################\r\n########\r\ndone\r\nBytes transferred = 1703556 (19fe84 hex)\r\n\r\nNAND erase: device 0 offset 0xa0000, size 0x760000\r\nErasing at 0x7e0000 -- 100% complete.\r\nOK\r\n\r\nNAND write: device 0 offset 0xa0000, size 0x19fe84\r\n\r\nWriting data at 0x23f800 -- 100% complete.\r\n1703556 bytes written: OK\r\nU-Boot><\/pre>\nFlash the Rootfs from U-Boot<\/h4>\n
Make sure oe_rootfs.jffs2 is in your tftpboot dir then run the tftp rootfs command.
\nIf you have TFTPBOOT_DIR set in your env-oe.sh script then this should happen automatically after building.<\/p>\n
U-Boot> run tftp_rootfs\r\nmacb0: link up, 100Mbps full-duplex (lpa: 0x45e1)\r\nUsing macb0 device\r\nTFTP from server 192.168.2.2; our IP address is 192.168.2.1\r\nFilename 'oe_rootfs.jffs2'.\r\nLoad address: 0x21400000\r\nLoading: #################################################################\r\n#################################################################\r\n#################################################################\r\n...\r\n#################################################################\r\n######\r\ndone\r\nBytes transferred = 11010048 (a80000 hex)\r\n\r\nNAND erase: device 0 offset 0x1800000, size 0xe800000\r\nErasing at 0xffe0000 -- 100% complete.\r\nOK\r\n\r\nNAND write: device 0 offset 0x1800000, size 0xa80000\r\n\r\nWriting data at 0x227f800 -- 100% complete.\r\n11010048 bytes written: OK\r\nU-Boot><\/pre>\nU-Boot may not complete a response to a delayed ARP request. If your tftp transfers are timing out, you may need to add an entry to the ARP cache manually. You do not need to do anything unless you are having a problem.<\/p>\n
$ # Add an entry for the device 00:D0:A0:02:0D:E1 with IP address 192.168.2.1 reachable via interface eth2\r\n$ sudo arp -i eth2 -s 192.168.2.1 00:D0:A0:02:0D:E1\r\n$ # View the ARP cache entries on interface eth2\r\n$ arp -n -i eth2\r\nAddress HWtype HWaddress Flags Mask Iface\r\n192.168.2.1 ether 00:D0:A0:02:0D:E1 CM eth2<\/pre>\nFlashing from Linux<\/h3>\n
The kernel and root filesystem can also be flashed from Linux as part of the reboot process. The device will check for the existence of a file named \/var\/volatile\/do_flash_upgrade<\/code> to indicate that it should attempt to flash itself on reboot. If \/var\/volatile\/do_flash_upgrade<\/code> exists, it will look for the upgrade files in two locations: \/var\/volatile\/flash-upgrade<\/code> and \/media\/card\/flash-upgrade<\/code> and flash itself.<\/p>\nPrior to CoreCDP 2, creating \/var\/volatile\/do_flash_upgrade was not necessary. The addition of this step makes the intention to upgrade more explicit and prevents unintended repeated flashing from the SD card.<\/div>\n
Summary<\/h4>\n
Copy kernel and rootfs to:
\n\/var\/volatile\/flash-upgrade\/uImage.bin<\/code>
\n\/var\/volatile\/flash-upgrade\/rootfs.jffs2<\/code>
\nOR
\n\/media\/card\/flash-upgrade\/uImage.bin<\/code>
\n\/media\/card\/flash-upgrade\/rootfs.jffs2<\/code><\/p>\nRun touch \/var\/volatile\/do_flash_upgrade<\/code>
\nRun reboot<\/code><\/p>\nThe file names must match above exactly and are case-sensitive.<\/p>\n
Step-by-step<\/h4>\n
On the device, first create the destination directory:<\/p>\n
\r\nmkdir \/var\/volatile\/flash-upgrade\r\n<\/pre>\nOn your development machine, use SCP to transfer the files to the device. The following example shows flashing corecdp-base-image on an MTCDP device (MACHINE=”mtcdp”).<\/p>\n
\r\ncd ${OETREE}\/build\/tmp\/deploy\/eglibc\/images\/mtcdp\r\nscp uImage-mtcdp.bin root@192.168.2.1:\/var\/volatile\/flash-upgrade\/uImage.bin\r\nscp corecdp-base-image-mtcdp.jffs2 root@192.168.2.1:\/var\/volatile\/flash-upgrade\/rootfs.jffs2\r\n<\/pre>\nIf you have TFTPBOOT_DIR<\/code> set in your env-oe.sh script, you may also use the linked files in \/tftpboot<\/code> instead.<\/p>\nIf you choose to copy uImage.bin and rootfs.jffs2 into the tmpfs mounted at \/var\/volatile, you will have to make sure there is enough space to fit the images in memory before hand. If you need to flash a larger image and have an SD card inserted, you can copy the images into \/media\/card instead.<\/p>\n
After transferring the files to the proper location, create \/var\/volatile\/do_flash_upgrade<\/code> and reboot to initiate the upgrade.<\/p>\n\r\n# touch \/var\/volatile\/do_flash_upgrade\r\n# reboot\r\n\r\nBroadcast message from root (ttyS0) (Tue Nov 15 05:35:42 2011):\r\n\r\nThe system is going down for reboot NOW!\r\nINIT: Sending processes the TERM signal\r\nStopping Dropbear SSH server: stopped \/usr\/sbin\/dropbear (pid 303)\r\ndropbear.\r\nStopping Vixie-cron.\r\nDeconfiguring network interfaces... done.\r\nStopping Lighttpd Web Server: stopped \/usr\/sbin\/lighttpd (pid 342)\r\nlighttpd.\r\nStopping syslogd\/klogd: stopped syslogd (pid 309)\r\nstopped klogd (pid 311)\r\ndone\r\nSending all processes the TERM signal...\r\neth0: link down\r\nSending all processes the KILL signal...\r\nUnmounting remote filesystems...\r\n\/var\/volatile\/flash-upgrade not present, skipping\r\n\r\nStarting flash upgrade from \/media\/card\/flash-upgrade...\r\nFlashing \/dev\/mtd5 (uImage) with \/media\/card\/flash-upgrade\/uImage.bin...\r\nflash_eraseall has been replaced by `flash_erase 0 0`; please use it\r\nErasing 128 Kibyte @ 740000 -- 100 % complete \r\nWriting data to block 0 at offset 0x0\r\nWriting data to block 1 at offset 0x20000\r\nWriting data to block 2 at offset 0x40000\r\nWriting data to block 3 at offset 0x60000\r\nWriting data to block 4 at offset 0x80000\r\nWriting data to block 5 at offset 0xa0000\r\nWriting data to block 6 at offset 0xc0000\r\nWriting data to block 7 at offset 0xe0000\r\nWriting data to block 8 at offset 0x100000\r\nWriting data to block 9 at offset 0x120000\r\nWriting data to block 10 at offset 0x140000\r\nWriting data to block 11 at offset 0x160000\r\nWriting data to block 12 at offset 0x180000\r\nWriting data to block 13 at offset 0x1a0000\r\nWriting data to block 14 at offset 0x1c0000\r\nFlashing \/dev\/mtd8 (rootfs) with \/media\/card\/flash-upgrade\/rootfs.jffs2...\r\nDeactivating swap...\r\nUnmounting local filesystems...\r\numount2: Device or resource busy\r\numount: none busy - remounted read-only\r\numount2: Device or resource busy\r\numount: devtmpfs busy - remounted read-only\r\nflash_eraseall has been replaced by `flash_erase 0 0`; please use it\r\nErasing 128 Kibyte @ 0 -- 0 % complete flash_erase: Cleanmarker written at 0\r\nErasing 128 Kibyte @ 20000 -- 0 % complete flash_erase: Cleanmarker written at 20000\r\n...\r\nWriting data to block 593 at offset 0x4a20000\r\nWriting data to block 594 at offset 0x4a40000\r\nWriting data to block 595 at offset 0x4a60000\r\nRebooting...\r\nRestarting system.\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"NAND Flash Layout MTD Name Offset Size Usage mtd0 MTNCG-NANDFlash 0x00000000 0x10000000 Whole NAND mtd1 AT91Bootstrap 0x00000000 0x00020000 Bootstrap [bootstrap.bin] mtd2 UBoot 0x00020000 0x00040000 U-Boot [u-boot.bin] mtd3 UBoot Config 0x00060000 0x00020000 U-Boot environment mtd4 UBoot Redundant Config 0x00080000 0x00020000 U-Boot redundant environment mtd5 uImage 0x000A0000 0x00760000 Linux Kernel [uImage.bin] mtd6 Config 0x00800000 0x00800000 Configuration [\/var\/config] […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":314,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"class_list":["post-403","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/pages\/403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/comments?post=403"}],"version-history":[{"count":73,"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/pages\/403\/revisions"}],"predecessor-version":[{"id":8306,"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/pages\/403\/revisions\/8306"}],"up":[{"embeddable":true,"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/pages\/314"}],"wp:attachment":[{"href":"https:\/\/www.multitech.net\/developer\/wp-json\/wp\/v2\/media?parent=403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}