On 1/27/23 14:45, Tom Rini wrote:
On Mon, Jan 23, 2023 at 02:59:05PM -0700, Simon Glass wrote:

In several places a 'select' is used to select a choice, which is not
supported by Kconfig. In other places, the filename for the 'source'
command is not in quites.

Fix these two problems throughout the tree, so that kconfiglib does not
show any more warnings.

Signed-off-by: Simon Glass <s...@chromium.org>

OK, to summarize what I just said in another email and clarify future
work. Please first split this patch in to its own series that corrects
each type of problem, per commit. The missing quotes for example, and
then the extra whitespace ones. Next, commenting out a select is wrong,
and each case needs to be better understood / fixed. I'm honestly not
sure if asking endianness for MIPS is right and if we should select that
from boards too, like ARC, but probably. The ARC_MMU one also should
just not be asked, I suspect, but as a separate patch where you cc
Alexey, we'll find out :)  And so on, for each.  Thanks.


For MIPS the endianess (and also architecture/ISA level) needs to be able to be 
set
by the user via menuconfig as most MIPS cores or SoCs can support multiple 
variants.
The idea is that the specific SoC or machine just sets the supported options to
restrict the options the user can choose. The board's defconfig should set the
required default value for each option but must not *select* it.

See the Boston board for example:

config TARGET_BOSTON
        bool "Support Boston"
        ...
        select SUPPORTS_BIG_ENDIAN
        select SUPPORTS_CPU_MIPS32_R1
        select SUPPORTS_CPU_MIPS32_R2
        select SUPPORTS_CPU_MIPS32_R6
        select SUPPORTS_CPU_MIPS64_R1
        select SUPPORTS_CPU_MIPS64_R2
        select SUPPORTS_CPU_MIPS64_R6
        select SUPPORTS_LITTLE_ENDIAN



A possible fix for ARC could be:


--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -53,8 +53,6 @@ config ARC
        select SUPPORT_OF_CONTROL
        select SYS_CACHE_SHIFT_7
        select TIMER
-       select SYS_BIG_ENDIAN if CPU_BIG_ENDIAN
-       select SYS_LITTLE_ENDIAN if !CPU_BIG_ENDIAN
config ARM
        bool "ARM architecture"
@@ -490,7 +488,7 @@ endif
source "board/keymile/Kconfig" -if MIPS || MICROBLAZE
+if MIPS || MICROBLAZE || ARC
choice
        prompt "Endianness selection"
@@ -502,11 +500,11 @@ choice
config SYS_BIG_ENDIAN
        bool "Big endian"
-       depends on (SUPPORTS_BIG_ENDIAN && MIPS) || MICROBLAZE
+       depends on (SUPPORTS_BIG_ENDIAN && MIPS) || MICROBLAZE || (CPU_BIG_ENDIAN 
&& ARC)
config SYS_LITTLE_ENDIAN
        bool "Little endian"
-       depends on (SUPPORTS_LITTLE_ENDIAN && MIPS) || MICROBLAZE
+       depends on (SUPPORTS_LITTLE_ENDIAN && MIPS) || MICROBLAZE || (CPU_LITTLE_ENDIAN 
&& ARC)
endchoice



A *make savedefconfig* should than automatically add 
*CONFIG_SYS_LITTLE_ENDIAN=y* or
*CONFIG_SYS_BIG_ENDIAN=y* to the ARC board defconfig's.

--
- Daniel

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