Changes between Version 25 and Version 26 of newport/bootloader

Timestamp:

06/19/2020 03:02:15 PM (5 years ago)

Author:

Tim Harvey

Comment:

replace use of mkits.sh script and use 'mkimage -f auto' introduced in u-boot-tools 2016.05

newport/bootloader

@@ -229 +229 @@
  * introduced to resolve limitations with original single-image formats and follow-on multi-image format supported by UBoot bootm (boot memory)
  * uses power of the Device-Tree-Compiler (DTC)
- * FIT .itb files can be created with mkimage by passing in a .its file which in device-tree notation describes the images
+ * FIT .itb files can be created with mkimage
  * U-Boot supports FIT with several commands:
   - {{{source <addr>:<name>}}} # source a script by name from FIT image in memory
@@ -238 +238 @@
 
 Example:
- * kernel.its with a single compressed kernel for ARM64 (used by Newport)
-{{{#!bash
-/dts-v1/;
-/ {
-        description = "Simple image with single Linux kernel";
-        #address-cells = <1>;
-        images {
-                kernel@1 {
-                        description = "ThunderX kernel";
-                        data = /incbin/("./Image.gz");
-                        type = "kernel";
-                        arch = "arm64";
-                        os = "linux";
-                        compression = "gzip";
-                        load = <0x40080000>;
-                        entry = <0x40080000>;
-                        hash@1 {
-                                algo = "sha256";
-                        };
-                };
-        };
-
-        configurations {
-                default = "conf@1";
-                conf@1 {
-                        description = "Boot Linux kernel";
-                        kernel = "kernel@1";
-                };
-        };
-};
-}}}
- * create image:
+ * create FIT image comprised of compressed kernel image:
 {{{#!bash
 cp arch/arm64/boot/Image .
 gzip Image
-mkimage -f kernel.its /tftpboot/kernel.itb
+mkimage -f auto -A arm64 -O linux -T kernel -C gzip -n "Kernel" \
+ -a 20080000 -e 20080000 -d Image.gz kernel.itb
 }}}
  * boot the default configuration from U-Boot. For example if your using an ext4 fs on the first MMC device, 2nd partition use:
 {{{#!bash
 tftpboot $loadaddr kernel.itb && setenv bootargs 'console=ttyAMA0,115200n8 earlycon=pl011,0x87e028000000 coherent_poll=64M root=/dev/mmcblk0p2 rootfstype=ext4 rootwait rw' && bootm $loadaddr - $fdtcontroladdr
-}}}
-
-Note that the Newport BSP does these steps in its 'ubuntu-image' make target uses the [https://github.com/Gateworks/bsp-newport/blob/master/mkits.sh newport/mkits.sh] script to create an its file then uses this to kernel a kernel.itb. You can follow along with the [https://github.com/Gateworks/bsp-newport/blob/master/Makefile] and do these by hand in your Newport BSP directory:
-{{{#!bash
-# create kernel.itb with compressed kernel image
-tar xvf linux-newport.tar.xz ./boot/Image --strip-components=2
-mv Image vmlinux
-gzip -f vmlinux
-./newport/mkits.sh -o kernel.its -k vmlinux.gz -C gzip -v "Ubuntu"
-mkimage -f kernel.its kernel.itb
 }}}