Using Initial RAM disk - Revision history

JulienB: /* Boot inird from U-Boot */

2015-07-27T08:50:53Z

‎Boot inird from U-Boot

2015-07-27T08:50:29Z

‎Boot inird from U-Boot

2015-07-26T14:51:14Z

‎Boot inird from U-Boot

2015-07-26T14:48:03Z

‎Boot inird from U-Boot

2013-09-20T16:26:52Z

‎Boot inird from U-Boot

2013-09-20T16:22:44Z

2013-09-20T16:22:04Z

2013-09-20T16:21:49Z

‎Configure Linux

2013-09-20T16:20:40Z

‎Build the initrd

2013-09-20T16:15:49Z

‎Build the initrd

@@ Line 66: / Line 66: @@
 </pre>
-* ''bootm'' is when you have Linux uImage (U-Boot custom format) like on APF9328/27/28/51, ''bootz'' is when you have Linux zImage (compressed format).
+* ''bootm'' is when you have Linux uImage (U-Boot custom format) like on APF9328/27/28/51, ''bootz'' is when you have Linux zImage (compressed format) like on [[APF6]].
 May be a bit long, but it should boot ;-)

@@ Line 66: / Line 66: @@
 </pre>
-May be a bit long, but it boots ;-)
+* ''bootm'' is when you have Linux uImage (U-Boot custom format) like on APF9328/27/28/51, ''bootz'' is when you have Linux zImage (compressed format).
 ==Going further==

@@ Line 62: / Line 62: @@
 <pre class="apf">
     replace previous "bootm" with:
-BIOS> run download_dtb
+BIOS> tftpboot ${fdt_addr} ${cpu_type}-${fdt_name}.dtb
 BIOS> bootz ${loadaddr} - ${fdt_addr};
 </pre>

@@ Line 55: / Line 55: @@
 <pre class="apf">
 BIOS> tftpboot ${loadaddr} ${board_name}-linux.bin
-BIOS> setenv bootargs console=ttySMX0,115200 root=/dev/ram rw   (adapt console to your board)
+BIOS> setenv bootargs console=${consoledev},${baudrate} root=/dev/ram rw
 BIOS> bootm
 </pre>
-May be a bit long but it boots ;-)
+* If you have a kernel with device tree support (like on [[APF6]]), you have to load it before and boot it a different way:
 ==Going further==

@@ Line 54: / Line 54: @@
 ==Boot inird from U-Boot==
 <pre class="apf">
-BIOS> tftpboot 0xA0000000 kernel
+BIOS> tftpboot ${loadaddr} ${board_name}-linux.bin
-BIOS> tftpboot 0xA2000000 rootfs-initrd
+BIOS> setenv bootargs console=ttySMX0,115200 root=/dev/ram rw   (adapt console to your board)
-BIOS> setenv bootargs console=ttySMX0,115200 root=/dev/ram rw
+BIOS> bootm
-BIOS> bootm 0xA0000000 0xA2000000
 </pre>

@@ Line 50: / Line 50: @@
 <pre class="host">
 $ make linux
 </pre>

← Older revision		Revision as of 16:22, 20 September 2013
Line 6:		Line 6:

	Initial RAM disk are also named initrd.		Initial RAM disk are also named initrd.
−
−	~~{{Under_Construction}}~~
−	~~{{Need_Update}}~~

	==Build the initrd==		==Build the initrd==

@@ Line 40: / Line 40: @@
 General Setup -->
      Initial RAM filesystem and RAM disk support
+</pre>
 Devices Drivers -->
      Block devices -->
@@ Line 50: / Line 52: @@
 * rebuild the kernel image if config was changed:
 <pre class="host">
-$ make
+$ make linux
 </pre>

@@ Line 11: / Line 11: @@
 ==Build the initrd==
-* Old way for old Buildroot is kept [[here]]
+* Old way for old Buildroot is kept [[Talk:Using_Initial_RAM_disk|here]].
 ==Configure Linux==

@@ Line 11: / Line 11: @@
 ==Build the initrd==
-Here we use a 35Mbytes initrd formatted as EXT2. Other format/size can be used (if supported by kernel).
+* Old way for old Buildroot is kept [[here]]
-<pre class="host">
-$ make shell_env
-$ source armadeus_env.sh
-−
-$ dd if=/dev/zero of=./myinitrd.img bs=1M count=35
-$ mke2fs -m 1 ./myinitrd.img
-$ mkdir ./myinitrd
-$ mount -t ext2 ./myinitrd.img ./myinitrd -o loop
-$ tar -xvf $ARMADEUS_ROOTFS_TAR -C ./myinitrd/
-$ umount ./myinitrd/
-$ gzip ./myinitrd.img
-</pre>
 ==Configure Linux==