Using Initial RAM disk - Revision history

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

2015-07-27T08:50:53Z

Boot inird from U-Boot

← Older revision		Revision as of 10:50, 27 July 2015
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	</pre>		</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 ;-)		May be a bit long, but it should boot ;-)

2015-07-27T08:50:29Z

Boot inird from U-Boot

← Older revision		Revision as of 10:50, 27 July 2015
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	</pre>		</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).

			May be a bit long, but it should boot ;-)

	==Going further==		==Going further==

2015-07-26T14:51:14Z

Boot inird from U-Boot

← Older revision		Revision as of 16:51, 26 July 2015
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	<pre class="apf">		<pre class="apf">
	replace previous "bootm" with:		replace previous "bootm" with:
	BIOS> ~~run download_dtb~~		BIOS> tftpboot ${fdt_addr} ${cpu_type}-${fdt_name}.dtb
	BIOS> bootz ${loadaddr} - ${fdt_addr};		BIOS> bootz ${loadaddr} - ${fdt_addr};
	</pre>		</pre>

2015-07-26T14:48:03Z

Boot inird from U-Boot

← Older revision		Revision as of 16:48, 26 July 2015
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	<pre class="apf">		<pre class="apf">
	BIOS> tftpboot ${loadaddr} ${board_name}-linux.bin		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		BIOS> bootm
	</pre>		</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:
			<pre class="apf">
			replace previous "bootm" with:
			BIOS> run download_dtb
			BIOS> bootz ${loadaddr} - ${fdt_addr};
			</pre>

			May be a bit long, but it boots ;-)

	==Going further==		==Going further==

2013-09-20T16:26:52Z

Boot inird from U-Boot

← Older revision		Revision as of 18:26, 20 September 2013
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	==Boot inird from U-Boot==		==Boot inird from U-Boot==
	<pre class="apf">		<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>		</pre>

2013-09-20T16:22:44Z

← Older revision		Revision as of 18:22, 20 September 2013
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	<pre class="host">		<pre class="host">
	$ make linux		$ make linux
	~~</pre>~~

	~~==Convert initrd for U-Boot==~~
	~~<pre class="host">~~
	~~$ ./buildroot/project_build_armv5te/apf27/u-boot-1.3.4/tools/mkimage -n 'MyRamDisk' -A arm -O linux -T ramdisk -C gzip -d ./myinitrd.img.gz rootfs-initrd~~
	~~$ cp rootfs-initrd /tftpboot/~~
	</pre>		</pre>

2013-09-20T16:22:04Z

← Older revision		Revision as of 18:22, 20 September 2013
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	Initial RAM disk are also named initrd.		Initial RAM disk are also named initrd.

	~~{{Under_Construction}}~~
	~~{{Need_Update}}~~

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

2013-09-20T16:21:49Z

Configure Linux

← Older revision		Revision as of 18:21, 20 September 2013
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	General Setup -->		General Setup -->
	Initial RAM filesystem and RAM disk support		Initial RAM filesystem and RAM disk support
			</pre>
			* If you want to use ramdisk outside of the context of initrd then configure also:
			<pre class="config">
	Devices Drivers -->		Devices Drivers -->
	Block devices -->		Block devices -->
Line 50:		Line 52:
	* rebuild the kernel image if config was changed:		* rebuild the kernel image if config was changed:
	<pre class="host">		<pre class="host">
	$ make		$ make linux
	</pre>		</pre>

2013-09-20T16:20:40Z

Build the initrd

@@ 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==

2013-09-20T16:15:49Z

Build the initrd

@@ 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]]
 ==Configure Linux==