330ac8e6d2
Chromebook Snow (Samsung XE303C12) is an Exynos 5 board with a keyboard, an 11 inch screen and a battery attached. It is relatively developer-friendly and can run mainline Linux kernels with little to no effort. There is barely anything special about this target as far as toolchain is concerned, but its bootloader only accepts signed kernel images in a Chromium OS specific format, and is not controllable otherwise. This config provides a script for building the proper kernel blobs, and a short manual for booting Buildroot images on this device. In-tree exynos_defconfig is used for the kernel, with a fragment to change mwifiex into a module. When built statically, mwifiex attempts to load its firmware before rootfs is mounted and fails. [Peter: use BR2_KERNEL_HEADERS_AS_KERNEL=y, lock kernel version, enable fit support in u-boot mkimage] Signed-off-by: Alex Suykov <alex.suykov@gmail.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
27 lines
711 B
Diff
27 lines
711 B
Diff
Some versions of u-boot for this Chromebook check for tpm node
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in the device tree and fail badly (reboot) if it is not found.
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While not exactly correct, it is much easier to patch the mainline
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device tree to match u-boot expectations than to fix u-boot on
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this device.
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See https://code.google.com/p/chromium/issues/detail?id=220169
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and https://lkml.org/lkml/2013/3/4/242
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Signed-off-by: Alex Suykov <alex.suykov@gmail.com>
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--- a/arch/arm/boot/dts/exynos5250-snow.dts
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+++ b/arch/arm/boot/dts/exynos5250-snow.dts
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@@ -474,6 +474,11 @@
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status = "okay";
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samsung,i2c-sda-delay = <100>;
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samsung,i2c-max-bus-freq = <66000>;
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+
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+ tpm {
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+ compatible = "infineon,slb9635tt";
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+ reg = <0x20>;
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+ };
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};
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&i2c_5 {
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