* [PATCH 1/1] sandbox: implement invalidate_icache_all()
@ 2020-12-09 18:42 Heinrich Schuchardt
2020-12-12 15:39 ` Simon Glass
0 siblings, 1 reply; 2+ messages in thread
From: Heinrich Schuchardt @ 2020-12-09 18:42 UTC (permalink / raw)
To: u-boot
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
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 at 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;
--
2.29.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH 1/1] sandbox: implement invalidate_icache_all()
2020-12-09 18:42 [PATCH 1/1] sandbox: implement invalidate_icache_all() Heinrich Schuchardt
@ 2020-12-12 15:39 ` Simon Glass
0 siblings, 0 replies; 2+ messages in thread
From: Simon Glass @ 2020-12-12 15:39 UTC (permalink / raw)
To: u-boot
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>
^ permalink raw reply [flat|nested] 2+ messages in thread
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