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@ -17,7 +17,28 @@ create image: |
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start it: |
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# qemu-system-mips -M mips -pflash flash -monitor null -nographic |
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Ide Disk |
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2) Download kernel + initrd |
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On ftp://ftp.denx.de/pub/contrib/Jean-Christophe_Plagniol-Villard/qemu_mips/ |
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you can downland |
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#config to build the kernel |
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qemu_mips_defconfig |
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#patch to fix mips interupt init on 2.6.24.y kernel |
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qemu_mips_kernel.patch |
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initrd.gz |
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vmlinux |
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vmlinux.bin |
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System.map |
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4) Generate 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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5) Copy uImage to Flash |
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# dd if=uImage bs=1k conv=notrunc seek=224 of=flash |
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6) Generate Ide Disk |
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# dd of=ide bs=1k cout=100k if=/dev/zero |
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@ -30,14 +51,12 @@ unit: sectors |
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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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# Generate 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 to Flash |
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# dd if=uImage bs=1k conv=notrunc seek=224 of=flash |
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# Copy to ide |
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7) Copy to 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 |
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8) Generate ext2 on part 2 on Copy uImage and initrd.gz |
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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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# Format as ext2 ( arg2 : nb blocks) |
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@ -45,10 +64,40 @@ unit: sectors |
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# 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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# Umount it |
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# umount /mnt |
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Now you can boot from flash, ide, ide+ext2 and tfp |
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9) Set Environment |
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setenv rd_start 0x80800000 |
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setenv rd_size 2663940 |
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setenv kernel BFC38000 |
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setenv oad_addr 80500000 |
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setenv load_addr2 80F00000 |
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setenv kernel_flash BFC38000 |
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setenv load_addr_hello 80200000 |
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setenv bootargs 'root=/dev/ram0 init=/bin/sh' |
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setenv load_rd_ext2 'ide res; ext2load ide 0:2 ${rd_start} /boot/initrd.gz' |
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setenv load_rd_tftp 'tftp ${rd_start} /initrd.gz' |
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setenv load_kernel_hda 'ide res; diskboot ${load_addr} 0:2' |
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setenv load_kernel_ext2 'ide res; ext2load ide 0:2 ${load_addr} /boot/uImage' |
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setenv load_kernel_tftp 'tftp ${load_addr} /qemu_mips/uImage' |
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setenv boot_ext2_ext2 'run load_rd_ext2; run load_kernel_ext2; run addmisc; bootm ${load_addr}' |
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setenv boot_ext2_flash 'run load_rd_ext2; run addmisc; bootm ${kernel_flash}' |
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setenv boot_ext2_hda 'run load_rd_ext2; run load_kernel_hda; run addmisc; bootm ${load_addr}' |
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setenv boot_ext2_tftp 'run load_rd_ext2; run load_kernel_tftp; run addmisc; bootm ${load_addr}' |
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setenv boot_tftp_hda 'run load_rd_tftp; run load_kernel_hda; run addmisc; bootm ${load_addr}' |
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setenv boot_tftp_ext2 'run load_rd_tftp; run load_kernel_ext2; run addmisc; bootm ${load_addr}' |
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setenv boot_tftp_flash 'run load_rd_tftp; run addmisc; bootm ${kernel_flash}' |
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setenv boot_tftp_tftp 'run load_rd_tftp; run load_kernel_tftp; run addmisc; bootm ${load_addr}' |
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setenv load_hello_tftp 'tftp ${load_addr_hello} /examples/hello_world.bin' |
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setenv go_tftp 'run load_hello_tftp; go ${load_addr_hello}' |
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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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10) 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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@ -64,7 +113,7 @@ in an other console you start gdb |
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1) Debugging of U-Boot Before Relocation |
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Before relocation, the addresses in the ELF file can be used without any problems |
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buy connecting to the gdb server localhost:1234 |
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by connecting to the gdb server localhost:1234 |
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# mipsel-unknown-linux-gnu-gdb u-boot |
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GNU gdb 6.6 |
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