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Follow-up commit will fuse overlapping RAM banks. As all memory is
supposed to be registered during mem_initcall or before, we can postpone
device creation to mmu_initcall, so we can directly allocate devices
spanning the correct region.
The mem driver and the devinfo command are the only consumers of these
devices, so it's ok to register the devices at mmu_initcall.
While at it, drop the struct memory_bank::dev member.
It's unused anywhere.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210531071239.30653-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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information
According to our /README, GPL-2.0-only applies for the whole project
except noted otherwise.
Signed-off-by: Roland Hieber <rohieb@rohieb.name>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Introduce memory_sdram_size() - subroutine to calculate size of SDRAM
chip base on its parameters such as # or rows, columns, banks and bus
width.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The bootm code needs to put the Kernel image and initrd into free
RAM. Add some functions to find free RAM chunks to help this code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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When a memory bank is already registered, return an error code
instead of throwing a bug. This can happen if a board has registered
a memory bank and the same bank is then probed from the devicetree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Also, request the sdram regions used by the barebox binary,
bss, malloc space and stack.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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On arm we have the concept of memory banks which can
be registered and iterated over. This is useful for
other architectures aswell, so add some generic infrastructure
for this.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Which is a better name and also better to collect other
things.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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