diff mbox series

[v2,2/6] board: sifive: use ccache driver instead of helper function

Message ID 20210803044444.14032-3-zong.li@sifive.com
State Superseded
Delegated to: Andes
Headers show
Series Support SiFive Composable cache driver | expand

Commit Message

Zong Li Aug. 3, 2021, 4:44 a.m. UTC
Invokes the generic cache_enable interface to execute the relative
implementation in SiFive ccache driver.

Signed-off-by: Zong Li <zong.li@sifive.com>
---
 arch/riscv/cpu/fu540/Kconfig              |  1 +
 arch/riscv/cpu/fu540/cache.c              | 54 ++++++-----------------
 arch/riscv/cpu/fu740/Kconfig              |  1 +
 arch/riscv/cpu/fu740/cache.c              | 52 ++++++----------------
 arch/riscv/include/asm/arch-fu540/cache.h |  2 +-
 arch/riscv/include/asm/arch-fu740/cache.h |  2 +-
 board/sifive/unleashed/unleashed.c        | 10 +----
 board/sifive/unmatched/unmatched.c        |  9 +---
 8 files changed, 33 insertions(+), 98 deletions(-)

Comments

Sean Anderson Aug. 10, 2021, 4:51 a.m. UTC | #1
On 8/3/21 12:44 AM, Zong Li wrote:
> Invokes the generic cache_enable interface to execute the relative
> implementation in SiFive ccache driver.
> 
> Signed-off-by: Zong Li <zong.li@sifive.com>
> ---
>   arch/riscv/cpu/fu540/Kconfig              |  1 +
>   arch/riscv/cpu/fu540/cache.c              | 54 ++++++-----------------
>   arch/riscv/cpu/fu740/Kconfig              |  1 +
>   arch/riscv/cpu/fu740/cache.c              | 52 ++++++----------------
>   arch/riscv/include/asm/arch-fu540/cache.h |  2 +-
>   arch/riscv/include/asm/arch-fu740/cache.h |  2 +-
>   board/sifive/unleashed/unleashed.c        | 10 +----
>   board/sifive/unmatched/unmatched.c        |  9 +---
>   8 files changed, 33 insertions(+), 98 deletions(-)
> 
> diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
> index 05463b2625..8608741779 100644
> --- a/arch/riscv/cpu/fu540/Kconfig
> +++ b/arch/riscv/cpu/fu540/Kconfig
> @@ -19,6 +19,7 @@ config SIFIVE_FU540
>   	imply SMP
>   	imply CLK_SIFIVE
>   	imply CLK_SIFIVE_PRCI
> +	imply SIFIVE_CCACHE
>   	imply SIFIVE_SERIAL
>   	imply MACB
>   	imply MII
> diff --git a/arch/riscv/cpu/fu540/cache.c b/arch/riscv/cpu/fu540/cache.c
> index 0fc4ef6c00..bc31f664b8 100644
> --- a/arch/riscv/cpu/fu540/cache.c
> +++ b/arch/riscv/cpu/fu540/cache.c
> @@ -1,55 +1,29 @@
>   // SPDX-License-Identifier: GPL-2.0+
>   /*
> - * Copyright (C) 2020 SiFive, Inc
> + * Copyright (C) 2020 - 2021 SiFive, Inc
>    *
>    * Authors:
>    *   Pragnesh Patel <pragnesh.patel@sifive.com>
>    */
>   
>   #include <common.h>
> -#include <asm/global_data.h>
> -#include <asm/io.h>
> -#include <linux/bitops.h>
> +#include <cache.h>
> +#include <dm.h>
>   
> -/* Register offsets */
> -#define L2_CACHE_CONFIG	0x000
> -#define L2_CACHE_ENABLE	0x008
> -
> -#define MASK_NUM_WAYS	GENMASK(15, 8)
> -#define NUM_WAYS_SHIFT	8
> -
> -DECLARE_GLOBAL_DATA_PTR;
> -
> -int cache_enable_ways(void)
> +int sifive_ccache_enable_ways(void)
>   {
> -	const void *blob = gd->fdt_blob;
> -	int node;
> -	fdt_addr_t base;
> -	u32 config;
> -	u32 ways;
> -
> -	volatile u32 *enable;
> -
> -	node = fdt_node_offset_by_compatible(blob, -1,
> -					     "sifive,fu540-c000-ccache");
> -
> -	if (node < 0)
> -		return node;
> -
> -	base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
> -						NULL, false);
> -	if (base == FDT_ADDR_T_NONE)
> -		return FDT_ADDR_T_NONE;
> +	struct udevice *dev;
> +	int ret;
>   
> -	config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
> -	ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
> +	ret = uclass_get_device_by_driver(UCLASS_CACHE,
> +					  DM_DRIVER_GET(sifive_ccache),
> +					  &dev);
> +	if (ret)
> +		return log_msg_ret("Cannot enable cache ways", ret);
>   
> -	enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
> +	ret = cache_enable(dev);
> +	if (ret)
> +		return log_msg_ret("ccache enable failed", ret);
>   
> -	/* memory barrier */
> -	mb();
> -	(*enable) = ways - 1;
> -	/* memory barrier */
> -	mb();
>   	return 0;
>   }
> diff --git a/arch/riscv/cpu/fu740/Kconfig b/arch/riscv/cpu/fu740/Kconfig
> index 408195f149..b4cada0ea9 100644
> --- a/arch/riscv/cpu/fu740/Kconfig
> +++ b/arch/riscv/cpu/fu740/Kconfig
> @@ -19,6 +19,7 @@ config SIFIVE_FU740
>   	imply SMP
>   	imply CLK_SIFIVE
>   	imply CLK_SIFIVE_PRCI
> +	imply SIFIVE_CCACHE
>   	imply SIFIVE_SERIAL
>   	imply MACB
>   	imply MII
> diff --git a/arch/riscv/cpu/fu740/cache.c b/arch/riscv/cpu/fu740/cache.c
> index 680955c9e3..e2782d76c0 100644
> --- a/arch/riscv/cpu/fu740/cache.c
> +++ b/arch/riscv/cpu/fu740/cache.c
> @@ -7,49 +7,23 @@
>    */
>   
>   #include <common.h>
> -#include <asm/io.h>
> -#include <linux/bitops.h>
> -#include <asm/global_data.h>
> +#include <cache.h>
> +#include <dm.h>
>   
> -/* Register offsets */
> -#define L2_CACHE_CONFIG	0x000
> -#define L2_CACHE_ENABLE	0x008
> -
> -#define MASK_NUM_WAYS	GENMASK(15, 8)
> -#define NUM_WAYS_SHIFT	8
> -
> -DECLARE_GLOBAL_DATA_PTR;
> -
> -int cache_enable_ways(void)
> +int sifive_ccache_enable_ways(void)
>   {
> -	const void *blob = gd->fdt_blob;
> -	int node;
> -	fdt_addr_t base;
> -	u32 config;
> -	u32 ways;
> -
> -	volatile u32 *enable;
> -
> -	node = fdt_node_offset_by_compatible(blob, -1,
> -					     "sifive,fu740-c000-ccache");
> -
> -	if (node < 0)
> -		return node;
> -
> -	base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
> -						NULL, false);
> -	if (base == FDT_ADDR_T_NONE)
> -		return FDT_ADDR_T_NONE;
> +	struct udevice *dev;
> +	int ret;
>   
> -	config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
> -	ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
> +	ret = uclass_get_device_by_driver(UCLASS_CACHE,
> +					  DM_DRIVER_GET(sifive_ccache),
> +					  &dev);
> +	if (ret)
> +		return log_msg_ret("Cannot enable cache ways", ret);
>   
> -	enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
> +	ret = cache_enable(dev);
> +	if (ret)
> +		return log_msg_ret("ccache enable failed", ret);
>   
> -	/* memory barrier */
> -	mb();
> -	(*enable) = ways - 1;
> -	/* memory barrier */
> -	mb();
>   	return 0;
>   }
> diff --git a/arch/riscv/include/asm/arch-fu540/cache.h b/arch/riscv/include/asm/arch-fu540/cache.h
> index 135a17c679..c252eb64d1 100644
> --- a/arch/riscv/include/asm/arch-fu540/cache.h
> +++ b/arch/riscv/include/asm/arch-fu540/cache.h
> @@ -9,6 +9,6 @@
>   #ifndef _CACHE_SIFIVE_H
>   #define _CACHE_SIFIVE_H
>   
> -int cache_enable_ways(void);
> +int sifive_ccache_enable_ways(void);
>   
>   #endif /* _CACHE_SIFIVE_H */
> diff --git a/arch/riscv/include/asm/arch-fu740/cache.h b/arch/riscv/include/asm/arch-fu740/cache.h
> index 7d4fe9942b..8c456e3658 100644
> --- a/arch/riscv/include/asm/arch-fu740/cache.h
> +++ b/arch/riscv/include/asm/arch-fu740/cache.h
> @@ -9,6 +9,6 @@
>   #ifndef _CACHE_SIFIVE_H
>   #define _CACHE_SIFIVE_H
>   
> -int cache_enable_ways(void);
> +int sifive_ccache_enable_ways(void);
>   
>   #endif /* _CACHE_SIFIVE_H */
> diff --git a/board/sifive/unleashed/unleashed.c b/board/sifive/unleashed/unleashed.c
> index 43027f0b54..12e61ec85f 100644
> --- a/board/sifive/unleashed/unleashed.c
> +++ b/board/sifive/unleashed/unleashed.c
> @@ -126,14 +126,6 @@ void *board_fdt_blob_setup(void)
>   
>   int board_init(void)
>   {
> -	int ret;
> -
>   	/* enable all cache ways */
> -	ret = cache_enable_ways();
> -	if (ret) {
> -		debug("%s: could not enable cache ways\n", __func__);
> -		return ret;
> -	}
> -
> -	return 0;
> +	return sifive_ccache_enable_ways();
>   }
> diff --git a/board/sifive/unmatched/unmatched.c b/board/sifive/unmatched/unmatched.c
> index 2f5629b578..d27c4d3e88 100644
> --- a/board/sifive/unmatched/unmatched.c
> +++ b/board/sifive/unmatched/unmatched.c
> @@ -23,13 +23,6 @@ void *board_fdt_blob_setup(void)
>   
>   int board_init(void)
>   {
> -	int ret;
> -
>   	/* enable all cache ways */
> -	ret = cache_enable_ways();
> -	if (ret) {
> -		debug("%s: could not enable cache ways\n", __func__);
> -		return ret;
> -	}
> -	return 0;
> +	return sifive_ccache_enable_ways();
>   }
> 

Can you combine patches 2-4 in some way? It seems like you add some code only to immediately refactor it.

--Sean
Zong Li Aug. 10, 2021, 6:40 a.m. UTC | #2
On Tue, Aug 10, 2021 at 12:51 PM Sean Anderson <seanga2@gmail.com> wrote:
>
> On 8/3/21 12:44 AM, Zong Li wrote:
> > Invokes the generic cache_enable interface to execute the relative
> > implementation in SiFive ccache driver.
> >
> > Signed-off-by: Zong Li <zong.li@sifive.com>
> > ---
> >   arch/riscv/cpu/fu540/Kconfig              |  1 +
> >   arch/riscv/cpu/fu540/cache.c              | 54 ++++++-----------------
> >   arch/riscv/cpu/fu740/Kconfig              |  1 +
> >   arch/riscv/cpu/fu740/cache.c              | 52 ++++++----------------
> >   arch/riscv/include/asm/arch-fu540/cache.h |  2 +-
> >   arch/riscv/include/asm/arch-fu740/cache.h |  2 +-
> >   board/sifive/unleashed/unleashed.c        | 10 +----
> >   board/sifive/unmatched/unmatched.c        |  9 +---
> >   8 files changed, 33 insertions(+), 98 deletions(-)
> >
> > diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
> > index 05463b2625..8608741779 100644
> > --- a/arch/riscv/cpu/fu540/Kconfig
> > +++ b/arch/riscv/cpu/fu540/Kconfig
> > @@ -19,6 +19,7 @@ config SIFIVE_FU540
> >       imply SMP
> >       imply CLK_SIFIVE
> >       imply CLK_SIFIVE_PRCI
> > +     imply SIFIVE_CCACHE
> >       imply SIFIVE_SERIAL
> >       imply MACB
> >       imply MII
> > diff --git a/arch/riscv/cpu/fu540/cache.c b/arch/riscv/cpu/fu540/cache.c
> > index 0fc4ef6c00..bc31f664b8 100644
> > --- a/arch/riscv/cpu/fu540/cache.c
> > +++ b/arch/riscv/cpu/fu540/cache.c
> > @@ -1,55 +1,29 @@
> >   // SPDX-License-Identifier: GPL-2.0+
> >   /*
> > - * Copyright (C) 2020 SiFive, Inc
> > + * Copyright (C) 2020 - 2021 SiFive, Inc
> >    *
> >    * Authors:
> >    *   Pragnesh Patel <pragnesh.patel@sifive.com>
> >    */
> >
> >   #include <common.h>
> > -#include <asm/global_data.h>
> > -#include <asm/io.h>
> > -#include <linux/bitops.h>
> > +#include <cache.h>
> > +#include <dm.h>
> >
> > -/* Register offsets */
> > -#define L2_CACHE_CONFIG      0x000
> > -#define L2_CACHE_ENABLE      0x008
> > -
> > -#define MASK_NUM_WAYS        GENMASK(15, 8)
> > -#define NUM_WAYS_SHIFT       8
> > -
> > -DECLARE_GLOBAL_DATA_PTR;
> > -
> > -int cache_enable_ways(void)
> > +int sifive_ccache_enable_ways(void)
> >   {
> > -     const void *blob = gd->fdt_blob;
> > -     int node;
> > -     fdt_addr_t base;
> > -     u32 config;
> > -     u32 ways;
> > -
> > -     volatile u32 *enable;
> > -
> > -     node = fdt_node_offset_by_compatible(blob, -1,
> > -                                          "sifive,fu540-c000-ccache");
> > -
> > -     if (node < 0)
> > -             return node;
> > -
> > -     base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
> > -                                             NULL, false);
> > -     if (base == FDT_ADDR_T_NONE)
> > -             return FDT_ADDR_T_NONE;
> > +     struct udevice *dev;
> > +     int ret;
> >
> > -     config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
> > -     ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
> > +     ret = uclass_get_device_by_driver(UCLASS_CACHE,
> > +                                       DM_DRIVER_GET(sifive_ccache),
> > +                                       &dev);
> > +     if (ret)
> > +             return log_msg_ret("Cannot enable cache ways", ret);
> >
> > -     enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
> > +     ret = cache_enable(dev);
> > +     if (ret)
> > +             return log_msg_ret("ccache enable failed", ret);
> >
> > -     /* memory barrier */
> > -     mb();
> > -     (*enable) = ways - 1;
> > -     /* memory barrier */
> > -     mb();
> >       return 0;
> >   }
> > diff --git a/arch/riscv/cpu/fu740/Kconfig b/arch/riscv/cpu/fu740/Kconfig
> > index 408195f149..b4cada0ea9 100644
> > --- a/arch/riscv/cpu/fu740/Kconfig
> > +++ b/arch/riscv/cpu/fu740/Kconfig
> > @@ -19,6 +19,7 @@ config SIFIVE_FU740
> >       imply SMP
> >       imply CLK_SIFIVE
> >       imply CLK_SIFIVE_PRCI
> > +     imply SIFIVE_CCACHE
> >       imply SIFIVE_SERIAL
> >       imply MACB
> >       imply MII
> > diff --git a/arch/riscv/cpu/fu740/cache.c b/arch/riscv/cpu/fu740/cache.c
> > index 680955c9e3..e2782d76c0 100644
> > --- a/arch/riscv/cpu/fu740/cache.c
> > +++ b/arch/riscv/cpu/fu740/cache.c
> > @@ -7,49 +7,23 @@
> >    */
> >
> >   #include <common.h>
> > -#include <asm/io.h>
> > -#include <linux/bitops.h>
> > -#include <asm/global_data.h>
> > +#include <cache.h>
> > +#include <dm.h>
> >
> > -/* Register offsets */
> > -#define L2_CACHE_CONFIG      0x000
> > -#define L2_CACHE_ENABLE      0x008
> > -
> > -#define MASK_NUM_WAYS        GENMASK(15, 8)
> > -#define NUM_WAYS_SHIFT       8
> > -
> > -DECLARE_GLOBAL_DATA_PTR;
> > -
> > -int cache_enable_ways(void)
> > +int sifive_ccache_enable_ways(void)
> >   {
> > -     const void *blob = gd->fdt_blob;
> > -     int node;
> > -     fdt_addr_t base;
> > -     u32 config;
> > -     u32 ways;
> > -
> > -     volatile u32 *enable;
> > -
> > -     node = fdt_node_offset_by_compatible(blob, -1,
> > -                                          "sifive,fu740-c000-ccache");
> > -
> > -     if (node < 0)
> > -             return node;
> > -
> > -     base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
> > -                                             NULL, false);
> > -     if (base == FDT_ADDR_T_NONE)
> > -             return FDT_ADDR_T_NONE;
> > +     struct udevice *dev;
> > +     int ret;
> >
> > -     config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
> > -     ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
> > +     ret = uclass_get_device_by_driver(UCLASS_CACHE,
> > +                                       DM_DRIVER_GET(sifive_ccache),
> > +                                       &dev);
> > +     if (ret)
> > +             return log_msg_ret("Cannot enable cache ways", ret);
> >
> > -     enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
> > +     ret = cache_enable(dev);
> > +     if (ret)
> > +             return log_msg_ret("ccache enable failed", ret);
> >
> > -     /* memory barrier */
> > -     mb();
> > -     (*enable) = ways - 1;
> > -     /* memory barrier */
> > -     mb();
> >       return 0;
> >   }
> > diff --git a/arch/riscv/include/asm/arch-fu540/cache.h b/arch/riscv/include/asm/arch-fu540/cache.h
> > index 135a17c679..c252eb64d1 100644
> > --- a/arch/riscv/include/asm/arch-fu540/cache.h
> > +++ b/arch/riscv/include/asm/arch-fu540/cache.h
> > @@ -9,6 +9,6 @@
> >   #ifndef _CACHE_SIFIVE_H
> >   #define _CACHE_SIFIVE_H
> >
> > -int cache_enable_ways(void);
> > +int sifive_ccache_enable_ways(void);
> >
> >   #endif /* _CACHE_SIFIVE_H */
> > diff --git a/arch/riscv/include/asm/arch-fu740/cache.h b/arch/riscv/include/asm/arch-fu740/cache.h
> > index 7d4fe9942b..8c456e3658 100644
> > --- a/arch/riscv/include/asm/arch-fu740/cache.h
> > +++ b/arch/riscv/include/asm/arch-fu740/cache.h
> > @@ -9,6 +9,6 @@
> >   #ifndef _CACHE_SIFIVE_H
> >   #define _CACHE_SIFIVE_H
> >
> > -int cache_enable_ways(void);
> > +int sifive_ccache_enable_ways(void);
> >
> >   #endif /* _CACHE_SIFIVE_H */
> > diff --git a/board/sifive/unleashed/unleashed.c b/board/sifive/unleashed/unleashed.c
> > index 43027f0b54..12e61ec85f 100644
> > --- a/board/sifive/unleashed/unleashed.c
> > +++ b/board/sifive/unleashed/unleashed.c
> > @@ -126,14 +126,6 @@ void *board_fdt_blob_setup(void)
> >
> >   int board_init(void)
> >   {
> > -     int ret;
> > -
> >       /* enable all cache ways */
> > -     ret = cache_enable_ways();
> > -     if (ret) {
> > -             debug("%s: could not enable cache ways\n", __func__);
> > -             return ret;
> > -     }
> > -
> > -     return 0;
> > +     return sifive_ccache_enable_ways();
> >   }
> > diff --git a/board/sifive/unmatched/unmatched.c b/board/sifive/unmatched/unmatched.c
> > index 2f5629b578..d27c4d3e88 100644
> > --- a/board/sifive/unmatched/unmatched.c
> > +++ b/board/sifive/unmatched/unmatched.c
> > @@ -23,13 +23,6 @@ void *board_fdt_blob_setup(void)
> >
> >   int board_init(void)
> >   {
> > -     int ret;
> > -
> >       /* enable all cache ways */
> > -     ret = cache_enable_ways();
> > -     if (ret) {
> > -             debug("%s: could not enable cache ways\n", __func__);
> > -             return ret;
> > -     }
> > -     return 0;
> > +     return sifive_ccache_enable_ways();
> >   }
> >
>
> Can you combine patches 2-4 in some way? It seems like you add some code only to immediately refactor it.
>

Okay, let me tidy up these patches. I separated them because I'd like
to separate the histories of using ccache driver and using common
interfaces, so people could easily know the process of evolution. But
yes, I might as well re-split the patches and combine them.


> --Sean
diff mbox series

Patch

diff --git a/arch/riscv/cpu/fu540/Kconfig b/arch/riscv/cpu/fu540/Kconfig
index 05463b2625..8608741779 100644
--- a/arch/riscv/cpu/fu540/Kconfig
+++ b/arch/riscv/cpu/fu540/Kconfig
@@ -19,6 +19,7 @@  config SIFIVE_FU540
 	imply SMP
 	imply CLK_SIFIVE
 	imply CLK_SIFIVE_PRCI
+	imply SIFIVE_CCACHE
 	imply SIFIVE_SERIAL
 	imply MACB
 	imply MII
diff --git a/arch/riscv/cpu/fu540/cache.c b/arch/riscv/cpu/fu540/cache.c
index 0fc4ef6c00..bc31f664b8 100644
--- a/arch/riscv/cpu/fu540/cache.c
+++ b/arch/riscv/cpu/fu540/cache.c
@@ -1,55 +1,29 @@ 
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2020 SiFive, Inc
+ * Copyright (C) 2020 - 2021 SiFive, Inc
  *
  * Authors:
  *   Pragnesh Patel <pragnesh.patel@sifive.com>
  */
 
 #include <common.h>
-#include <asm/global_data.h>
-#include <asm/io.h>
-#include <linux/bitops.h>
+#include <cache.h>
+#include <dm.h>
 
-/* Register offsets */
-#define L2_CACHE_CONFIG	0x000
-#define L2_CACHE_ENABLE	0x008
-
-#define MASK_NUM_WAYS	GENMASK(15, 8)
-#define NUM_WAYS_SHIFT	8
-
-DECLARE_GLOBAL_DATA_PTR;
-
-int cache_enable_ways(void)
+int sifive_ccache_enable_ways(void)
 {
-	const void *blob = gd->fdt_blob;
-	int node;
-	fdt_addr_t base;
-	u32 config;
-	u32 ways;
-
-	volatile u32 *enable;
-
-	node = fdt_node_offset_by_compatible(blob, -1,
-					     "sifive,fu540-c000-ccache");
-
-	if (node < 0)
-		return node;
-
-	base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
-						NULL, false);
-	if (base == FDT_ADDR_T_NONE)
-		return FDT_ADDR_T_NONE;
+	struct udevice *dev;
+	int ret;
 
-	config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
-	ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
+	ret = uclass_get_device_by_driver(UCLASS_CACHE,
+					  DM_DRIVER_GET(sifive_ccache),
+					  &dev);
+	if (ret)
+		return log_msg_ret("Cannot enable cache ways", ret);
 
-	enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
+	ret = cache_enable(dev);
+	if (ret)
+		return log_msg_ret("ccache enable failed", ret);
 
-	/* memory barrier */
-	mb();
-	(*enable) = ways - 1;
-	/* memory barrier */
-	mb();
 	return 0;
 }
diff --git a/arch/riscv/cpu/fu740/Kconfig b/arch/riscv/cpu/fu740/Kconfig
index 408195f149..b4cada0ea9 100644
--- a/arch/riscv/cpu/fu740/Kconfig
+++ b/arch/riscv/cpu/fu740/Kconfig
@@ -19,6 +19,7 @@  config SIFIVE_FU740
 	imply SMP
 	imply CLK_SIFIVE
 	imply CLK_SIFIVE_PRCI
+	imply SIFIVE_CCACHE
 	imply SIFIVE_SERIAL
 	imply MACB
 	imply MII
diff --git a/arch/riscv/cpu/fu740/cache.c b/arch/riscv/cpu/fu740/cache.c
index 680955c9e3..e2782d76c0 100644
--- a/arch/riscv/cpu/fu740/cache.c
+++ b/arch/riscv/cpu/fu740/cache.c
@@ -7,49 +7,23 @@ 
  */
 
 #include <common.h>
-#include <asm/io.h>
-#include <linux/bitops.h>
-#include <asm/global_data.h>
+#include <cache.h>
+#include <dm.h>
 
-/* Register offsets */
-#define L2_CACHE_CONFIG	0x000
-#define L2_CACHE_ENABLE	0x008
-
-#define MASK_NUM_WAYS	GENMASK(15, 8)
-#define NUM_WAYS_SHIFT	8
-
-DECLARE_GLOBAL_DATA_PTR;
-
-int cache_enable_ways(void)
+int sifive_ccache_enable_ways(void)
 {
-	const void *blob = gd->fdt_blob;
-	int node;
-	fdt_addr_t base;
-	u32 config;
-	u32 ways;
-
-	volatile u32 *enable;
-
-	node = fdt_node_offset_by_compatible(blob, -1,
-					     "sifive,fu740-c000-ccache");
-
-	if (node < 0)
-		return node;
-
-	base = fdtdec_get_addr_size_auto_parent(blob, 0, node, "reg", 0,
-						NULL, false);
-	if (base == FDT_ADDR_T_NONE)
-		return FDT_ADDR_T_NONE;
+	struct udevice *dev;
+	int ret;
 
-	config = readl((volatile u32 *)base + L2_CACHE_CONFIG);
-	ways = (config & MASK_NUM_WAYS) >> NUM_WAYS_SHIFT;
+	ret = uclass_get_device_by_driver(UCLASS_CACHE,
+					  DM_DRIVER_GET(sifive_ccache),
+					  &dev);
+	if (ret)
+		return log_msg_ret("Cannot enable cache ways", ret);
 
-	enable = (volatile u32 *)(base + L2_CACHE_ENABLE);
+	ret = cache_enable(dev);
+	if (ret)
+		return log_msg_ret("ccache enable failed", ret);
 
-	/* memory barrier */
-	mb();
-	(*enable) = ways - 1;
-	/* memory barrier */
-	mb();
 	return 0;
 }
diff --git a/arch/riscv/include/asm/arch-fu540/cache.h b/arch/riscv/include/asm/arch-fu540/cache.h
index 135a17c679..c252eb64d1 100644
--- a/arch/riscv/include/asm/arch-fu540/cache.h
+++ b/arch/riscv/include/asm/arch-fu540/cache.h
@@ -9,6 +9,6 @@ 
 #ifndef _CACHE_SIFIVE_H
 #define _CACHE_SIFIVE_H
 
-int cache_enable_ways(void);
+int sifive_ccache_enable_ways(void);
 
 #endif /* _CACHE_SIFIVE_H */
diff --git a/arch/riscv/include/asm/arch-fu740/cache.h b/arch/riscv/include/asm/arch-fu740/cache.h
index 7d4fe9942b..8c456e3658 100644
--- a/arch/riscv/include/asm/arch-fu740/cache.h
+++ b/arch/riscv/include/asm/arch-fu740/cache.h
@@ -9,6 +9,6 @@ 
 #ifndef _CACHE_SIFIVE_H
 #define _CACHE_SIFIVE_H
 
-int cache_enable_ways(void);
+int sifive_ccache_enable_ways(void);
 
 #endif /* _CACHE_SIFIVE_H */
diff --git a/board/sifive/unleashed/unleashed.c b/board/sifive/unleashed/unleashed.c
index 43027f0b54..12e61ec85f 100644
--- a/board/sifive/unleashed/unleashed.c
+++ b/board/sifive/unleashed/unleashed.c
@@ -126,14 +126,6 @@  void *board_fdt_blob_setup(void)
 
 int board_init(void)
 {
-	int ret;
-
 	/* enable all cache ways */
-	ret = cache_enable_ways();
-	if (ret) {
-		debug("%s: could not enable cache ways\n", __func__);
-		return ret;
-	}
-
-	return 0;
+	return sifive_ccache_enable_ways();
 }
diff --git a/board/sifive/unmatched/unmatched.c b/board/sifive/unmatched/unmatched.c
index 2f5629b578..d27c4d3e88 100644
--- a/board/sifive/unmatched/unmatched.c
+++ b/board/sifive/unmatched/unmatched.c
@@ -23,13 +23,6 @@  void *board_fdt_blob_setup(void)
 
 int board_init(void)
 {
-	int ret;
-
 	/* enable all cache ways */
-	ret = cache_enable_ways();
-	if (ret) {
-		debug("%s: could not enable cache ways\n", __func__);
-		return ret;
-	}
-	return 0;
+	return sifive_ccache_enable_ways();
 }