random-mirrors/smaeul-u-boot
1
0
Fork 0
mirror of https://github.com/smaeul/u-boot.git synced 2025-10-14 04:46:01 +01:00
Code Issues Packages Projects Releases Wiki Activity

microblaze: cache: improve icache Kconfig options

Browse Source 
Replace CONFIG_ICACHE with a Kconfig option more limited in scope -
XILINX_MICROBLAZE0_USE_WIC. It should be enabled if the processor supports
the "wic" (Write to Instruction Cache) instruction. It will be used to
guard "wic" invocations in microblaze cache code.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Link: https://lore.kernel.org/r/20220531181435.3473549-6-ovpanait@gmail.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Ovidiu Panait 2022-05-31 21:14:27 +03:00 committed by Michal Simek
parent ef0a592ae8
commit 8daf89678e
3 changed files with 14 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/microblaze/Kconfig
View File

@ -39,10 +39,6 @@ config TARGET_MICROBLAZE_GENERIC
endchoice endchoice
config ICACHE
bool "Enable icache support"
default y
source "board/xilinx/Kconfig" source "board/xilinx/Kconfig"
source "board/xilinx/microblaze-generic/Kconfig" source "board/xilinx/microblaze-generic/Kconfig"

6
arch/microblaze/cpu/cache.c
View File

@ -58,14 +58,14 @@ void flush_cache(ulong addr, ulong size)
{ {
int i; int i;
for (i = 0; i < size; i += 4) { for (i = 0; i < size; i += 4) {
asm volatile ( if (CONFIG_IS_ENABLED(XILINX_MICROBLAZE0_USE_WIC)) {
#ifdef CONFIG_ICACHE asm volatile (
"wic %0, r0;" "wic %0, r0;"
#endif
"nop;" "nop;"
: :
: "r" (addr + i) : "r" (addr + i)
: "memory"); : "memory");
}
if (CONFIG_IS_ENABLED(XILINX_MICROBLAZE0_USE_WDC)) { if (CONFIG_IS_ENABLED(XILINX_MICROBLAZE0_USE_WDC)) {
asm volatile ( asm volatile (

11
board/xilinx/microblaze-generic/Kconfig
View File

@ -74,4 +74,15 @@ config SPL_XILINX_MICROBLAZE0_USE_WDC
bool bool
default XILINX_MICROBLAZE0_USE_WDC default XILINX_MICROBLAZE0_USE_WDC
config XILINX_MICROBLAZE0_USE_WIC
bool "MicroBlaze wic instruction support"
default y
help
Enable this option if the MicroBlaze processor is configured with
support for the "wic" (Write to Instruction Cache) instruction.
config SPL_XILINX_MICROBLAZE0_USE_WIC
bool
default XILINX_MICROBLAZE0_USE_WIC
endif endif