u-boot.git/include/cpu_func.h, branch master

treewide: Add a function to change page permissions

2025-03-14T11:37:54+00:00

For armv8 we are adding proper page permissions for the relocated U-Boot
binary. Add a weak function that can be used across architectures to change
the page permissions

Tested-by: Neil Armstrong  # on AML-S905X-CC
Signed-off-by: Ilias Apalodimas

cpu_func.h: provide noncached_set_region prototype to fix build

2024-10-29T22:17:32+00:00

Due to the removal of weak functions in 7d6cee2cd0 ("cmd: cache: Remove
weak function"), U-Boot fails to compile after updating to v2024.10 for
mediatek target in OpenWrt with GCC-14 with error:
cmd/cache.c: In function 'do_dcache':
cmd/cache.c:57:25: error: implicit declaration of function
	'noncached_set_region' [-Wimplicit-function-declaration]

Thus, provide a prototype in include/cpu_func.h to fix a build
error in cmd/cache.c, since related prototypes are also located there.

The issue occurred after the update of uboot-mediatek in OpenWrt to
v2024.10, in combination with GCC-14 toolchain. It was reported and
discussed in https://github.com/openwrt/openwrt/issues/16697, and
temporarily fixed with
https://github.com/openwrt/openwrt/commit/92ca322dd1f48158b8829fec59319a12e4ae4295.

Signed-off-by: Jonas Jelonek 
Link: https://github.com/openwrt/openwrt/issues/16697
Link: https://github.com/openwrt/openwrt/commit/92ca322dd1f48158b8829fec59319a12e4ae4295
Fixes: 7d6cee2cd0 ("cmd: cache: Remove weak function")
Signed-off-by: Tom Rini

CONFIG_SYS_NONCACHED_MEMORY: Move prototypes to include/cpu_func.h for consistency

2024-10-29T22:17:18+00:00

Currently, a number of generic cache related functions have their common
prototype declared in include/cpu_func.h. Move the current set of
noncached functions there as well to match.

Signed-off-by: Tom Rini

doc: replace @return by Return:

2022-01-19T17:11:34+00:00

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt

arm64: Update memcpy_{from, to}io() helpers

2021-07-28T23:30:22+00:00

At early U-Boot stage, before relocation, MMU is not yet configured
and disabled. DDR may not be configured with the correct memory
attributes (can be configured in MT_DEVICE instead of MT_MEMORY).

In this case, usage of memcpy_{from, to}io() may leads to synchronous
abort in AARCH64 in case the normal memory address is not 64Bits aligned.

To avoid such situation, forbid usage of normal memory cast to (u64 *) in
case MMU is not enabled.

Signed-off-by: Patrice Chotard 
Reviewed-by: Patrick Delaunay 
Cc: mark.kettenis@xs4all.nl
Signed-off-by: Patrick Delaunay

reset: Remove addr parameter from reset_cpu()

2021-03-02T19:03:02+00:00

Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler 
Reviewed-by: Simon Glass

command: Remove the cmd_tbl_t typedef

2020-05-18T22:36:55+00:00

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass

common: Move reset_cpu() to the CPU header

2020-01-17T19:02:31+00:00

Move this function out of common.h and into a relevant header file.

Signed-off-by: Simon Glass

common: Move ARM cache operations out of common.h

2019-12-02T23:24:58+00:00

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass 
Reviewed-by: Daniel Schwierzeck 
Reviewed-by: Tom Rini

common: Move some cache and MMU functions out of common.h

2019-12-02T23:23:55+00:00

These functions belong in cpu_func.h. Another option would be cache.h
but that code uses driver model and we have not moved these cache
functions to use driver model. Since they are CPU-related it seems
reasonable to put them here.

Move them over.

Signed-off-by: Simon Glass 
Reviewed-by: Tom Rini