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doc: board: qemu-mips.rst: fix code examples
Code sections should be syntax highlighted as bash.
Comment lines in code should start with a hash sign ('#') but code lines
should not.
Most commands can be executed as normal users. Prepend those commands
requiring elevated authorization with 'sudo'.
dd does not have a parameter cout.
sfdisk does not have a -C parameter on Debian Buster.
Provide the necessary input to sfdisk.
Creating a partition of length zero makes no sense.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
Daniel Schwierzeck
parent
47a1933aa7
commit
bfaa54f912
1 changed files with 60 additions and 48 deletions
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@ -25,37 +25,45 @@ Example usage
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Using u-boot.bin as ROM (replaces Qemu monitor):
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32 bit, big endian::
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32 bit, big endian
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# make qemu_mips
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# qemu-system-mips -M mips -bios u-boot.bin -nographic
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.. code-block:: bash
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32 bit, little endian::
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make qemu_mips
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qemu-system-mips -M mips -bios u-boot.bin -nographic
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# make qemu_mipsel
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# qemu-system-mipsel -M mips -bios u-boot.bin -nographic
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32 bit, little endian
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64 bit, big endian::
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.. code-block:: bash
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# make qemu_mips64
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# qemu-system-mips64 -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic
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make qemu_mipsel
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qemu-system-mipsel -M mips -bios u-boot.bin -nographic
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64 bit, little endian::
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64 bit, big endian
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# make qemu_mips64el
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# qemu-system-mips64el -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic
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.. code-block:: bash
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make qemu_mips64
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qemu-system-mips64 -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic
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64 bit, little endian
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.. code-block:: bash
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make qemu_mips64el
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qemu-system-mips64el -cpu MIPS64R2-generic -M mips -bios u-boot.bin -nographic
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or using u-boot.bin from emulated flash:
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if you use a qemu version after commit 4224
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if you use a QEMU version after commit 4224
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.. code-block:: none
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.. code-block:: bash
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create image:
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# dd of=flash bs=1k count=4k if=/dev/zero
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# dd of=flash bs=1k conv=notrunc if=u-boot.bin
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start it (see above):
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# qemu-system-mips[64][el] [-cpu MIPS64R2-generic] -M mips -pflash flash -nographic
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# create image:
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dd of=flash bs=1k count=4k if=/dev/zero
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dd of=flash bs=1k conv=notrunc if=u-boot.bin
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# start it (see above):
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qemu-system-mips[64][el] [-cpu MIPS64R2-generic] -M mips -pflash flash -nographic
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Download kernel + initrd
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^^^^^^^^^^^^^^^^^^^^^^^^
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@ -75,61 +83,63 @@ you can downland::
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Generate uImage
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^^^^^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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# tools/mkimage -A mips -O linux -T kernel -C gzip -a 0x80010000 -e 0x80245650 -n "Linux 2.6.24.y" -d vmlinux.bin.gz uImage
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tools/mkimage -A mips -O linux -T kernel -C gzip -a 0x80010000 -e 0x80245650 -n "Linux 2.6.24.y" -d vmlinux.bin.gz uImage
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Copy uImage to Flash
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^^^^^^^^^^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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# dd if=uImage bs=1k conv=notrunc seek=224 of=flash
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dd if=uImage bs=1k conv=notrunc seek=224 of=flash
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Generate Ide Disk
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^^^^^^^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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# dd of=ide bs=1k cout=100k if=/dev/zero
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dd of=ide bs=1k count=100k if=/dev/zero
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# sfdisk -C 261 -d ide
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# partition table of ide
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# Create partion table
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sudo sfdisk ide << EOF
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label: dos
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label-id: 0x6fe3a999
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device: image
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unit: sectors
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ide1 : start= 63, size= 32067, Id=83
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ide2 : start= 32130, size= 32130, Id=83
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ide3 : start= 64260, size= 4128705, Id=83
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ide4 : start= 0, size= 0, Id= 0
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image1 : start= 63, size= 32067, Id=83
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image2 : start= 32130, size= 32130, Id=83
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image3 : start= 64260, size= 4128705, Id=83
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EOF
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Copy to ide
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^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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# dd if=uImage bs=512 conv=notrunc seek=63 of=ide
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dd if=uImage bs=512 conv=notrunc seek=63 of=ide
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Generate ext2 on part 2 on Copy uImage and initrd.gz
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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# Attached as loop device ide offset = 32130 * 512
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# losetup -o 16450560 -f ide
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sudo losetup -o 16450560 /dev/loop0 ide
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# Format as ext2 ( arg2 : nb blocks)
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# mke2fs /dev/loop0 16065
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# losetup -d /dev/loop0
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sudo mkfs.ext2 /dev/loop0 16065
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sudo losetup -d /dev/loop0
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# Mount and copy uImage and initrd.gz to it
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# mount -o loop,offset=16450560 -t ext2 ide /mnt
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# mkdir /mnt/boot
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# cp {initrd.gz,uImage} /mnt/boot/
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sudo mount -o loop,offset=16450560 -t ext2 ide /mnt
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sudo mkdir /mnt/boot
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cp {initrd.gz,uImage} /mnt/boot/
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# Umount it
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# umount /mnt
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sudo umount /mnt
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Set Environment
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^^^^^^^^^^^^^^^
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.. code-block:: none
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.. code-block:: bash
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setenv rd_start 0x80800000
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setenv rd_size 2663940
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@ -157,9 +167,11 @@ Set Environment
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setenv addmisc 'setenv bootargs ${bootargs} console=ttyS0,${baudrate} rd_start=${rd_start} rd_size=${rd_size} ethaddr=${ethaddr}'
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setenv bootcmd 'run boot_tftp_flash'
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Now you can boot from flash, ide, ide+ext2 and tfp::
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Now you can boot from flash, ide, ide+ext2 and tfp
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# qemu-system-mips -M mips -pflash flash -monitor null -nographic -net nic -net user -tftp `pwd` -hda ide
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.. code-block:: bash
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qemu-system-mips -M mips -pflash flash -monitor null -nographic -net nic -net user -tftp `pwd` -hda ide
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How to debug U-Boot
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@ -168,9 +180,9 @@ How to debug U-Boot
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In order to debug U-Boot you need to start qemu with gdb server support (-s)
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and waiting the connection to start the CPU (-S)
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.. code-block:: none
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.. code-block:: bash
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# qemu-system-mips -S -s -M mips -pflash flash -monitor null -nographic -net nic -net user -tftp `pwd` -hda ide
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qemu-system-mips -S -s -M mips -pflash flash -monitor null -nographic -net nic -net user -tftp `pwd` -hda ide
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in an other console you start gdb
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@ -182,7 +194,7 @@ by connecting to the gdb server localhost:1234
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.. code-block:: none
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# mipsel-unknown-linux-gnu-gdb u-boot
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$ mipsel-unknown-linux-gnu-gdb u-boot
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GNU gdb 6.6
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Copyright (C) 2006 Free Software Foundation, Inc.
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GDB is free software, covered by the GNU General Public License, and you are
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