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The ST-Ericsson U8500 SoC has been used in mass-production for some Android smartphones released around 2012. In particular, Samsung has released more than 5 different smartphones based on U8500, e.g. - Samsung Galaxy S III mini (GT-I8190) "golden" - Samsung Galaxy S Advance (GT-I9070) "janice" - Samsung Galaxy Xcover 2 (GT-S7710) "skomer" and a few others. Mainline Linux has great support for the Ux500 SoC, so these smartphones can also run Linux mainline quite well. Unfortunately, the original Samsung bootloader used on these devices has limitations that prevent booting Linux mainline directly. It keeps the L2 cache enabled, which causes Linux to crash very early, shortly after decompressing the kernel. Using U-Boot allows to circumvent these limitations. We can let the Samsung bootloader chain-load U-Boot and U-Boot locks the L2 cache before booting into Linux. U-Boot has several other advantages - it supports device-trees directly and we are no longer limited to flashing Android boot images through Samsung's proprietary download mode. The Samsung "stemmy" board covers all Samsung devices based on U8500. Add minimal support for "stemmy". For now only UART is supported but this will be extended later. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
27 lines
566 B
Text
27 lines
566 B
Text
if ARCH_U8500
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config SYS_SOC
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default "u8500"
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choice
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prompt "U8500 board selection"
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config TARGET_STEMMY
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bool "Samsung (stemmy) board"
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help
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The Samsung "stemmy" board supports Samsung smartphones released with
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the ST-Ericsson NovaThor U8500 SoC, e.g.
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- Samsung Galaxy S III mini (GT-I8190) "golden"
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- Samsung Galaxy S Advance (GT-I9070) "janice"
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- Samsung Galaxy Xcover 2 (GT-S7710) "skomer"
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and likely others as well (untested).
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See board/ste/stemmy/README for details.
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endchoice
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source "board/ste/stemmy/Kconfig"
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endif
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