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https://github.com/brain-hackers/u-boot-brain
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Reading the boot mode pins after power-up does not necessarily represent the boot mode used by the ROM loader. For example the state of a pin may have changed because a recovery switch which was pressed to enter USB mode is already released after plugging in USB. The ROM loader stores the value a fixed address in OCRAM. Use this value instead of reading the boot map pins. The GLOBAL_BOOT_MODE_ADDR for i.MX28 is taken from an U-Boot patch for the MX28EVK: http://repository.timesys.com/buildsources/u/u-boot/u-boot-2009.08/u-boot-2009.08-mx28-201012211513.patch Leave the boot mode detection for the i.MX23 untouched. Someone has to test whether the i.MX ROM loader does also store the boot mode in OCRAM and if the address match. This patch superseeds my incorrect patch: ARM: mxs: get boot mode from OTP http://patchwork.ozlabs.org/patch/454930/ Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks> Cc: Stefano Babic <sbabic@denx.de> |
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