| Message ID | 20201209184244.33510-1-xypron.glpk@gmx.de |
|---|---|
| State | Accepted |
| Commit | 3286d223fd715a79accfc66039f3f6f52e9a8896 |
| Delegated to: | Simon Glass |
| Headers | show |
| Series | [1/1] sandbox: implement invalidate_icache_all() | expand |
On Wed, 9 Dec 2020 at 11:42, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote: > > Before executing code that we have loaded from a file we need to flush the > data cache and invalidate the instruction flash. > > Implement functions flush_cache() and invalidate_icache_all(). > > Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> > --- > arch/sandbox/cpu/Makefile | 2 +- > arch/sandbox/cpu/cache.c | 23 +++++++++++++++++++++++ > board/sandbox/sandbox.c | 4 ---- > 3 files changed, 24 insertions(+), 5 deletions(-) > create mode 100644 arch/sandbox/cpu/cache.c Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/cpu/Makefile b/arch/sandbox/cpu/Makefile index bac96447d5..de7fe7f391 100644 --- a/arch/sandbox/cpu/Makefile +++ b/arch/sandbox/cpu/Makefile @@ -5,7 +5,7 @@ # (C) Copyright 2000-2003 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. -obj-y := cpu.o state.o +obj-y := cache.o cpu.o state.o extra-y := start.o os.o extra-$(CONFIG_SANDBOX_SDL) += sdl.o obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/sandbox/cpu/cache.c b/arch/sandbox/cpu/cache.c new file mode 100644 index 0000000000..46c62c0b44 --- /dev/null +++ b/arch/sandbox/cpu/cache.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020, Heinrich Schuchardt <xypron.glpk@gmx.de> + */ + +#include <common.h> +#include <cpu_func.h> +#include <asm/state.h> + +void flush_cache(unsigned long addr, unsigned long size) +{ + /* Clang uses (char *) parameters, GCC (void *) */ + __builtin___clear_cache((void *)addr, (void *)(addr + size)); +} + +void invalidate_icache_all(void) +{ + struct sandbox_state *state = state_get_current(); + + /* Clang uses (char *) parameters, GCC (void *) */ + __builtin___clear_cache((void *)state->ram_buf, + (void *)(state->ram_buf + state->ram_size)); +} diff --git a/board/sandbox/sandbox.c b/board/sandbox/sandbox.c index 18a605de02..3235541a7d 100644 --- a/board/sandbox/sandbox.c +++ b/board/sandbox/sandbox.c @@ -28,10 +28,6 @@ U_BOOT_DEVICE(gpio_sandbox) = { }; #endif -void flush_cache(unsigned long start, unsigned long size) -{ -} - #ifndef CONFIG_TIMER /* system timer offset in ms */ static unsigned long sandbox_timer_offset;
Before executing code that we have loaded from a file we need to flush the data cache and invalidate the instruction flash. Implement functions flush_cache() and invalidate_icache_all(). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> --- arch/sandbox/cpu/Makefile | 2 +- arch/sandbox/cpu/cache.c | 23 +++++++++++++++++++++++ board/sandbox/sandbox.c | 4 ---- 3 files changed, 24 insertions(+), 5 deletions(-) create mode 100644 arch/sandbox/cpu/cache.c -- 2.29.2