riscv: lib: implement enable_caches for sifive cache
The enable_caches is a generic hook for architecture-implemented, we
define this function to enable composable cache of sifive platforms.
In sifive_cache, it invokes the generic cache_enable interface of cache
uclass to execute the relative implementation in SiFive ccache driver.
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Rick Chen <rick@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4b0c3df..ec651fe 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -179,6 +179,11 @@
The SiFive CLINT block holds memory-mapped control and status registers
associated with software and timer interrupts.
+config SIFIVE_CACHE
+ bool
+ help
+ This enables the operations to configure SiFive cache
+
config ANDES_PLIC
bool
depends on RISCV_MMODE || SPL_RISCV_MMODE
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index c4cc414..06020fc 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -10,6 +10,7 @@
obj-$(CONFIG_CMD_BOOTI) += bootm.o image.o
obj-$(CONFIG_CMD_GO) += boot.o
obj-y += cache.o
+obj-$(CONFIG_SIFIVE_CACHE) += sifive_cache.o
ifeq ($(CONFIG_$(SPL_)RISCV_MMODE),y)
obj-$(CONFIG_$(SPL_)SIFIVE_CLINT) += sifive_clint.o
obj-$(CONFIG_ANDES_PLIC) += andes_plic.o
diff --git a/arch/riscv/lib/sifive_cache.c b/arch/riscv/lib/sifive_cache.c
new file mode 100644
index 0000000..2815487
--- /dev/null
+++ b/arch/riscv/lib/sifive_cache.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 SiFive, Inc
+ */
+
+#include <common.h>
+#include <cache.h>
+#include <cpu_func.h>
+#include <dm.h>
+
+void enable_caches(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ /* Enable ways of ccache */
+ ret = uclass_get_device_by_driver(UCLASS_CACHE,
+ DM_DRIVER_GET(sifive_ccache),
+ &dev);
+ if (ret) {
+ log_debug("Cannot enable cache ways");
+ } else {
+ ret = cache_enable(dev);
+ if (ret)
+ log_debug("ccache enable failed");
+ }
+}