AFAIK the NIOS2 architecture does not have any possibility to dynamically switch off the data cache. So _status() always reports 1 and _enable/_disable() just issue a flush of everything.
For example, common/cmd_elf.c depends on these symbols. Signed-off-by: Joachim Foerster <joachim.foers...@missinglinkelectronics.com> --- Changes for v2: - Remove return; from added void functions arch/nios2/cpu/cpu.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/nios2/cpu/cpu.c b/arch/nios2/cpu/cpu.c index ef360ee..c9ce390 100644 --- a/arch/nios2/cpu/cpu.c +++ b/arch/nios2/cpu/cpu.c @@ -47,3 +47,18 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) nios2_callr(CONFIG_SYS_RESET_ADDR); return 0; } + +int dcache_status(void) +{ + return 1; +} + +void dcache_enable(void) +{ + flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); +} + +void dcache_disable(void) +{ + flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE); +} -- 1.7.6 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot