From 43d28855d8ed7929856e376524eb41a74731aed1 Mon Sep 17 00:00:00 2001 From: Stephan Gerhold Date: Sat, 4 Jan 2020 18:45:19 +0100 Subject: board: Add new Samsung "stemmy" board based on ST-Ericsson U8500 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 Reviewed-by: Linus Walleij --- configs/stemmy_defconfig | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 configs/stemmy_defconfig (limited to 'configs/stemmy_defconfig') diff --git a/configs/stemmy_defconfig b/configs/stemmy_defconfig new file mode 100644 index 0000000000..6908ef3448 --- /dev/null +++ b/configs/stemmy_defconfig @@ -0,0 +1,18 @@ +CONFIG_ARM=y +CONFIG_ARCH_U8500=y +CONFIG_SYS_TEXT_BASE=0x100000 +CONFIG_NR_DRAM_BANKS=1 +CONFIG_SYS_CONSOLE_INFO_QUIET=y +CONFIG_HUSH_PARSER=y +CONFIG_CMD_CONFIG=y +CONFIG_CMD_LICENSE=y +CONFIG_CMD_DM=y +CONFIG_CMD_GPIO=y +CONFIG_CMD_MMC=y +CONFIG_CMD_PART=y +CONFIG_CMD_GETTIME=y +CONFIG_EFI_PARTITION=y +CONFIG_DEFAULT_DEVICE_TREE="ste-ux500-samsung-stemmy" +# CONFIG_NET is not set +# CONFIG_MMC_HW_PARTITIONING is not set +# CONFIG_EFI_LOADER is not set -- cgit v1.2.3