mirror of
https://github.com/brain-hackers/u-boot-brain
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d4150ca6de
Most architectures currently supported by U-Boot use trivial implementations of map_to_physmem & virt_to_phys which simply cast a physical address to a pointer for use a virtual address & vice-versa. This results in a lot of duplicate implementations of these mapping functions. The set of functions provided by different architectures also differs, with some having implementations of phys_to_virt & others not. A later patch will make use of phys_to_virt in architecture-neutral code, and so requires that it be provided for all architectures. This patch introduces an asm-generic/io.h which provides generic implementations of address mapping functions, allowing the duplication of them between architectures to be removed. Once architectures are converted to make use of this generic header it will also ensure that all of phys_to_virt, virt_to_phys, map_physmem & unmap_physmem are provided. The 2 families of functions differ in that map_physmem may create dynamic mappings whilst phys_to_virt may not & therefore is more limited in scope but doesn't require information such as a length & flags. This patch doesn't convert any architectures to make use of this generic header - later patches in the series will do so. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Alexey Brodkin <alexey.brodkin@synopsys.com> Cc: Angelo Dureghello <angelo@sysam.it> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Macpaul Lin <macpaul@andestech.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Thomas Chou <thomas@wytron.com.tw> Cc: Wolfgang Denk <wd@denx.de> Acked-by: Angelo Dureghello <angelo@sysam.it> Tested-by: Angelo Dureghello <angelo@sysam.it> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> |
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| .. | ||
| bitops | ||
| atomic-long.h | ||
| bitsperlong.h | ||
| global_data.h | ||
| gpio.h | ||
| io.h | ||
| ioctl.h | ||
| sections.h | ||
| signal.h | ||
| u-boot.h | ||
| unaligned.h | ||