Changes between Version 13 and Version 14 of newport/firmware

Timestamp:

04/25/2019 06:49:29 PM (5 years ago)

Author:

Tim Harvey

Comment:

updated for kernel.itb and newport.scr bootscript being moved to root partition /boot directory

newport/firmware

@@ -155 +155 @@
 Updating just the kernel.itb (FIT Image) can be done with {{{tftpboot}}} and {{{fatwrite}}}:
 {{{#!bash
+# choose device (0 for boot device, 1 for alternate device)
+setenv dev 0
 # kernel
-tftpboot $loadaddr kernel.itb && fatwrite mmc $dev:1 $loadaddr kernel.itb $filesize
+tftpboot $loadaddr kernel.itb && ext4write mmc $dev:2 $loadaddr /boot/kernel.itb $filesize
 # bootscript
-tftpboot $loadaddr newport.scr && fatwrite mmc $dev:1 $loadaddr newport.scr $filesize
+tftpboot $loadaddr newport.scr && ext4write mmc $dev:1 $loadaddr /boot/newport.scr $filesize
 }}}
 
@@ -212 +214 @@
 [=#serial-ethernet-linux]
 === Update Firmware via Serial Console and Ethernet from Linux ===
-If booted to Linux on a board you can also update the kernel and bootscript fairly easily by mounting the FAT12 filesystem and copying the file(s):
-{{{#!bash
-mount /dev/mmcblk0p1 /mnt
-cp kernel.itb /mnt
-cp newport.scr /mnt
+If booted to Linux on a board you can also update the kernel and bootscript by updating the files in the boot directory of the root filesystem:
+{{{#!bash
+cp kernel.itb /boot
+cp newport.scr /boot
 }}}
 
@@ -309 +310 @@
 
 
+= Updating Boot script
+The U-Boot boot script exists in the root filesystem and is loaded by the U-Boot 'generic distro' config bootscripts.
+
 
 = Updating Linux kernel
-The Linux kernel exists in the embedded FAT12 filesystem and is loaded by the bootloader boot scripts. It can be updated by mounting {{{/dev/mmcblk0p1}}} in Linux and replacing the file. How and from where the kernel is loaded can be changed to your liking in the U-Boot env however the Gateworks U-Boot env uses a bootscript which is scanned for by the U-Boot scripts (look over the U-Boot env to follow the 'distro config' bootscript setup). The Ubuntu bootscript in the Newport BSP (newport/ubuntu.scr) uses a compressed kernel in a FIT image (kernel.itb). If wanted your bootscripts can be altered to provide a redundant/alternate kernel based on some U-Boot env var flags and counters that could be modified in Linux with the fw_setenv/fw_printenv tools from the U-Boot package. These are packaged in the u-boot-tools Ubuntu package and you can see example usages in the Newport BSP newport/Makefile.
+The Linux kernel exists in the root filesystem and is loaded by the bootloader boot scripts. It can be updated by mounting {{{/dev/mmcblk0p2}}} in Linux and replacing the file. How and from where the kernel is loaded can be changed to your liking in the U-Boot env however the Gateworks U-Boot env uses a bootscript which is scanned for by the U-Boot scripts (look over the U-Boot env to follow the 'distro config' bootscript setup). The Ubuntu bootscript in the Newport BSP (newport/ubuntu.scr) uses a compressed kernel in a FIT image (kernel.itb). If wanted your bootscripts can be altered to provide a redundant/alternate kernel based on some U-Boot env var flags and counters that could be modified in Linux with the fw_setenv/fw_printenv tools from the U-Boot package. These are packaged in the u-boot-tools Ubuntu package and you can see example usages in the Newport BSP newport/Makefile.