mvebu: image: introduce BOOT_SCRIPT variable
All of U-Boot scripts repeat the same pattern with only Device Tree blob name changing for respective device. Therefore create generic scripts which will be altered on demad by image build process, and create BOOT_SCRIPT variable which can be added to device recipe and will allow referencing the same script by many device recipes. This will allow to slim down the ammount of files in buildroot tree and avoid needlessly incrementing amount of boot scripts if new devices will be added. Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>v19.07.3_mercusys_ac12_duma
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# Standard Boot-Script
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# use only well-known variable names provided by U-Boot Distro boot
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# This script assumes that there is a boot partition,
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# and that the root partition is always the next one.
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# Override DeviceTree for Clearfog Base
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# removed once U-Boot is able to detect the board variant.
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setenv fdtfile armada-388-clearfog-base.dtb
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# rootfs is always on the next partition
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setexpr openwrt_rootpart ${distro_bootpart} + 1
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# figure out partition uuid to pass to the kernel as root=
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part uuid ${devtype} ${devnum}:${openwrt_rootpart} uuid
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# generate bootargs (rootfs)
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setenv bootargs ${bootargs} root=PARTUUID=${uuid} rootfstype=auto rootwait
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# add console= option to bootargs, if any
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if test -n "${console}"; then
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setenv bootargs ${bootargs} console=${console}
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fi
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echo "Booting Linux with ${bootargs}"
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load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${fdtfile}
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load ${devtype} ${devnum}:${distro_bootpart} ${kernel_addr_r} zImage
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bootz ${kernel_addr_r} - ${fdt_addr_r}
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setenv bootargs "root=PARTUUID=@ROOT@-02 rw rootwait"
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if test -n "${console}"; then
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setenv bootargs "${bootargs} ${console}"
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fi
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load mmc 1:1 ${fdt_addr} armada-8040-mcbin.dtb
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load mmc 1:1 ${kernel_addr} Image
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booti ${kernel_addr} - ${fdt_addr}
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setenv bootargs "root=PARTUUID=@ROOT@-02 rw rootwait"
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if test -n "${console}"; then
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setenv bootargs "${bootargs} ${console}"
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fi
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load mmc 0:1 ${fdt_addr} armada-3720-espressobin.dtb
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load mmc 0:1 ${kernel_addr} Image
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booti ${kernel_addr} - ${fdt_addr}
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