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Split the flash loader prototype into pieces so that each product can
build a custom flash loader with very little code.
Signed-off-by: Keith Packard <keithp@keithp.com>
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.rodata* needs to be in flash; otherwise strings get left in ram.
Failing to align sections makes the initialized data get dumped into
the wrong place in memory.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Saves 4kB of flash space for applications.
Signed-off-by: Keith Packard <keithp@keithp.com>
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works
Would be nice to be able to explicitly define addresses for the
romconfig variables, but I can't figure out how to make that
work. Instead, just explicitly load the files in teh right order to
make things land in the right places.
Signed-off-by: Keith Packard <keithp@keithp.com>
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For some reason, the silly linker marks things in section .boot as
data rather than bss, so they'd end up initialized by default. Force
them to be NOLOAD so they preserve values across reboot so that boot
chaining works properly.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Split out code into separate files.
Add support for getting back to boot loader from application.
Signed-off-by: Keith Packard <keithp@keithp.com>
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And get it loaded to RAM so it can execute correctly.
Nothing calls it yet...
Signed-off-by: Keith Packard <keithp@keithp.com>
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This shrinks the base OS load down a bit as well so that stm-flash
fits comfortably in the first 8kB of memory.
Signed-off-by: Keith Packard <keithp@keithp.com>
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