u-boot-brain/arch/arc
Eugeniy Paltsev 3cf239394a ARC: cache: explicitly initialize "*_exists" variables
dcache_exists, icache_exists, slc_exists and ioc_exists global
variables in "arch/arc/lib/cache.c" remain uninitialized if
SoC doesn't have corresponding HW.

This happens because we use the next constructions for their
definition and initialization:
-------------------------->>---------------------
int ioc_exists __section(".data");

if (/* condition */)
		ioc_exists = 1;
-------------------------->>---------------------

That's quite a non-trivial issue as one may think of it.
The point is we intentionally put those variables in ".data" section
so they might survive relocation (remember we initilaize them very early
before relocation and continue to use after reloaction). While being
non-initialized and not explicitly put in .data section they would end-up
in ".bss" section which by definition is filled with zeroes.
But since we place those variables in .data section we need to care
about their proper initialization ourselves.

Also while at it we change their type to "bool" as more appropriate.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-12-11 11:36:22 +03:00
..
cpu arc: No need in sections defined in sources with newer tools 2016-08-05 12:50:25 +03:00
dts arc: Add support for HS Development Kit board 2017-06-29 19:34:10 +03:00
include/asm ARC: add defines of some cache and xCCM AUX registers 2017-12-11 11:36:22 +03:00
lib ARC: cache: explicitly initialize "*_exists" variables 2017-12-11 11:36:22 +03:00
config.mk arc: Use -mcpu=XXX instead of obsolete -marcXXX 2016-09-16 12:12:26 +03:00
Kconfig arc: Add support for HS Development Kit board 2017-06-29 19:34:10 +03:00
Makefile arc: introduce separate section for interrupt vector table 2015-01-15 22:38:42 +03:00