Added noop implementation for dcache operations that will buzz about missing real implementation and disable the dcache. This fixes compilation of DaVinci EMAC driver on arm926ejs.
Signed-off-by: Ilya Yanok yanok@emcraft.com --- arch/arm/cpu/arm926ejs/Makefile | 2 +- arch/arm/cpu/arm926ejs/cache.c | 75 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+), 1 deletions(-) create mode 100644 arch/arm/cpu/arm926ejs/cache.c
diff --git a/arch/arm/cpu/arm926ejs/Makefile b/arch/arm/cpu/arm926ejs/Makefile index a56ff08..5923e65 100644 --- a/arch/arm/cpu/arm926ejs/Makefile +++ b/arch/arm/cpu/arm926ejs/Makefile @@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).o
START = start.o -COBJS = cpu.o +COBJS = cpu.o cache.o
ifdef CONFIG_SPL_BUILD ifdef CONFIG_SPL_NO_CPU_SUPPORT_CODE diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c new file mode 100644 index 0000000..4415642 --- /dev/null +++ b/arch/arm/cpu/arm926ejs/cache.c @@ -0,0 +1,75 @@ +/* + * (C) Copyright 2011 + * Ilya Yanok, EmCraft Systems + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ +#include <linux/types.h> +#include <common.h> + +#ifndef CONFIG_SYS_DCACHE_OFF +static inline void dcache_noop(void) +{ + if (dcache_status()) { + puts("WARNING: cache operations are not implemented!\n" + "WARNING: disabling D-Cache now, you can re-enable it" + "later with 'dcache on' command\n"); + dcache_disable(); + } +} + +void invalidate_dcache_all(void) +{ + dcache_noop(); +} + +void flush_dcache_all(void) +{ + dcache_noop(); +} + +void invalidate_dcache_range(unsigned long start, unsigned long stop) +{ + dcache_noop(); +} + +void flush_dcache_range(unsigned long start, unsigned long stop) +{ + dcache_noop(); +} +#else /* #ifndef CONFIG_SYS_DCACHE_OFF */ +void invalidate_dcache_all(void) +{ +} + +void flush_dcache_all(void) +{ +} + +void invalidate_dcache_range(unsigned long start, unsigned long stop) +{ +} + +void flush_dcache_range(unsigned long start, unsigned long stop) +{ +} + +void flush_cache(unsigned long start, unsigned long size) +{ +} +#endif /* #ifndef CONFIG_SYS_DCACHE_OFF */