Re: [PATCH v6 3/4] RISC-V: Remove CLINT related code from timer and arch

2020-08-04 Thread Palmer Dabbelt 

On Fri, 24 Jul 2020 00:18:21 PDT (-0700), Anup Patel wrote:

Right now the RISC-V timer driver is convoluted to support:
1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for
   clocksource and SBI timer calls for clockevent device.
2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO
   counter register for clocksource and CLINT MMIO compare register
   for clockevent device.

We now have a separate CLINT timer driver which also provide CLINT
based IPI operations so let's remove CLINT MMIO related code from
arch/riscv directory and RISC-V timer driver.

Signed-off-by: Anup Patel 
Tested-by: Emil Renner Berhing 
Acked-by: Daniel Lezcano 
---
 arch/riscv/Kconfig  |  2 +-
 arch/riscv/Kconfig.socs |  2 +
 arch/riscv/configs/nommu_virt_defconfig |  7 +--
 arch/riscv/include/asm/clint.h  | 14 --
 arch/riscv/include/asm/timex.h  | 28 +++
 arch/riscv/kernel/Makefile  |  2 +-
 arch/riscv/kernel/clint.c   | 63 -
 arch/riscv/kernel/setup.c   |  2 -
 arch/riscv/kernel/smp.c |  1 -
 arch/riscv/kernel/smpboot.c |  1 -
 drivers/clocksource/Kconfig |  3 +-
 drivers/clocksource/timer-riscv.c   | 17 +--
 12 files changed, 16 insertions(+), 126 deletions(-)
 delete mode 100644 arch/riscv/include/asm/clint.h
 delete mode 100644 arch/riscv/kernel/clint.c

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index fedb4a72b29a..57a72ae23d10 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -74,7 +74,7 @@ config RISCV
select PCI_DOMAINS_GENERIC if PCI
select PCI_MSI if PCI
select RISCV_INTC
-   select RISCV_TIMER
+   select RISCV_TIMER if RISCV_SBI
select SPARSEMEM_STATIC if 32BIT
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 6c88148f1b9b..8a55f6156661 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -12,6 +12,7 @@ config SOC_SIFIVE

 config SOC_VIRT
bool "QEMU Virt Machine"
+   select CLINT_TIMER if RISCV_M_MODE
select POWER_RESET
select POWER_RESET_SYSCON
select POWER_RESET_SYSCON_POWEROFF
@@ -24,6 +25,7 @@ config SOC_VIRT
 config SOC_KENDRYTE
bool "Kendryte K210 SoC"
depends on !MMU
+   select CLINT_TIMER if RISCV_M_MODE
select SERIAL_SIFIVE if TTY
select SERIAL_SIFIVE_CONSOLE if TTY
select SIFIVE_PLIC
diff --git a/arch/riscv/configs/nommu_virt_defconfig 
b/arch/riscv/configs/nommu_virt_defconfig
index cf74e179bf90..cf9388184aa3 100644
--- a/arch/riscv/configs/nommu_virt_defconfig
+++ b/arch/riscv/configs/nommu_virt_defconfig
@@ -26,6 +26,7 @@ CONFIG_EXPERT=y
 CONFIG_SLOB=y
 # CONFIG_SLAB_MERGE_DEFAULT is not set
 # CONFIG_MMU is not set
+CONFIG_SOC_VIRT=y
 CONFIG_MAXPHYSMEM_2GB=y
 CONFIG_SMP=y
 CONFIG_CMDLINE="root=/dev/vda rw earlycon=uart8250,mmio,0x1000,115200n8 
console=ttyS0"
@@ -48,7 +49,6 @@ CONFIG_VIRTIO_BLK=y
 # CONFIG_SERIO is not set
 # CONFIG_LEGACY_PTYS is not set
 # CONFIG_LDISC_AUTOLOAD is not set
-# CONFIG_DEVMEM is not set
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
 CONFIG_SERIAL_8250_CONSOLE=y
@@ -56,16 +56,13 @@ CONFIG_SERIAL_8250_NR_UARTS=1
 CONFIG_SERIAL_8250_RUNTIME_UARTS=1
 CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
+# CONFIG_DEVMEM is not set
 # CONFIG_HWMON is not set
-# CONFIG_LCD_CLASS_DEVICE is not set
-# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
 # CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
-CONFIG_SIFIVE_PLIC=y
-# CONFIG_VALIDATE_FS_PARSER is not set
 CONFIG_EXT2_FS=y
 # CONFIG_DNOTIFY is not set
 # CONFIG_INOTIFY_USER is not set
diff --git a/arch/riscv/include/asm/clint.h b/arch/riscv/include/asm/clint.h
deleted file mode 100644
index adaba98a7d6c..
--- a/arch/riscv/include/asm/clint.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_RISCV_CLINT_H
-#define _ASM_RISCV_CLINT_H 1
-
-#include 
-#include 
-
-#ifdef CONFIG_RISCV_M_MODE
-void clint_init_boot_cpu(void);
-#else /* CONFIG_RISCV_M_MODE */
-#define clint_init_boot_cpu()  do { } while (0)
-#endif /* CONFIG_RISCV_M_MODE */
-
-#endif /* _ASM_RISCV_CLINT_H */
diff --git a/arch/riscv/include/asm/timex.h b/arch/riscv/include/asm/timex.h
index bad2a7c2cda5..a3fb85d505d4 100644
--- a/arch/riscv/include/asm/timex.h
+++ b/arch/riscv/include/asm/timex.h
@@ -7,41 +7,27 @@
 #define _ASM_RISCV_TIMEX_H

 #include 
-#include 

 typedef unsigned long cycles_t;

-extern u64 __iomem *riscv_time_val;
-extern u64 __iomem *riscv_time_cmp;
-
-#ifdef CONFIG_64BIT
-#define mmio_get_cycles()  readq_relaxed(riscv_time_val)
-#else
-#define mmio_get_cycles()  readl_relaxed(riscv_time_val)
-#define mmio_get_cycles_hi()

Re: [PATCH v6 3/4] RISC-V: Remove CLINT related code from timer and arch

2020-07-25 Thread Anup Patel 
On Sat, Jul 25, 2020 at 10:46 AM Atish Patra  wrote:
>
> On Fri, Jul 24, 2020 at 12:19 AM Anup Patel  wrote:
> >
> > Right now the RISC-V timer driver is convoluted to support:
> > 1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for
> >clocksource and SBI timer calls for clockevent device.
> > 2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO
> >counter register for clocksource and CLINT MMIO compare register
> >for clockevent device.
> >
> > We now have a separate CLINT timer driver which also provide CLINT
> > based IPI operations so let's remove CLINT MMIO related code from
> > arch/riscv directory and RISC-V timer driver.
> >
> > Signed-off-by: Anup Patel 
> > Tested-by: Emil Renner Berhing 
> > Acked-by: Daniel Lezcano 
> > ---
> >  arch/riscv/Kconfig  |  2 +-
> >  arch/riscv/Kconfig.socs |  2 +
> >  arch/riscv/configs/nommu_virt_defconfig |  7 +--
> >  arch/riscv/include/asm/clint.h  | 14 --
> >  arch/riscv/include/asm/timex.h  | 28 +++
> >  arch/riscv/kernel/Makefile  |  2 +-
> >  arch/riscv/kernel/clint.c   | 63 -
> >  arch/riscv/kernel/setup.c   |  2 -
> >  arch/riscv/kernel/smp.c |  1 -
> >  arch/riscv/kernel/smpboot.c |  1 -
> >  drivers/clocksource/Kconfig |  3 +-
> >  drivers/clocksource/timer-riscv.c   | 17 +--
> >  12 files changed, 16 insertions(+), 126 deletions(-)
> >  delete mode 100644 arch/riscv/include/asm/clint.h
> >  delete mode 100644 arch/riscv/kernel/clint.c
> >
> > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> > index fedb4a72b29a..57a72ae23d10 100644
> > --- a/arch/riscv/Kconfig
> > +++ b/arch/riscv/Kconfig
> > @@ -74,7 +74,7 @@ config RISCV
> > select PCI_DOMAINS_GENERIC if PCI
> > select PCI_MSI if PCI
> > select RISCV_INTC
> > -   select RISCV_TIMER
> > +   select RISCV_TIMER if RISCV_SBI
> > select SPARSEMEM_STATIC if 32BIT
> > select SPARSE_IRQ
> > select SYSCTL_EXCEPTION_TRACE
> > diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
> > index 6c88148f1b9b..8a55f6156661 100644
> > --- a/arch/riscv/Kconfig.socs
> > +++ b/arch/riscv/Kconfig.socs
> > @@ -12,6 +12,7 @@ config SOC_SIFIVE
> >
> >  config SOC_VIRT
> > bool "QEMU Virt Machine"
> > +   select CLINT_TIMER if RISCV_M_MODE
> > select POWER_RESET
> > select POWER_RESET_SYSCON
> > select POWER_RESET_SYSCON_POWEROFF
> > @@ -24,6 +25,7 @@ config SOC_VIRT
> >  config SOC_KENDRYTE
> > bool "Kendryte K210 SoC"
> > depends on !MMU
> > +   select CLINT_TIMER if RISCV_M_MODE
> > select SERIAL_SIFIVE if TTY
> > select SERIAL_SIFIVE_CONSOLE if TTY
> > select SIFIVE_PLIC
> > diff --git a/arch/riscv/configs/nommu_virt_defconfig 
> > b/arch/riscv/configs/nommu_virt_defconfig
> > index cf74e179bf90..cf9388184aa3 100644
> > --- a/arch/riscv/configs/nommu_virt_defconfig
> > +++ b/arch/riscv/configs/nommu_virt_defconfig
> > @@ -26,6 +26,7 @@ CONFIG_EXPERT=y
> >  CONFIG_SLOB=y
> >  # CONFIG_SLAB_MERGE_DEFAULT is not set
> >  # CONFIG_MMU is not set
> > +CONFIG_SOC_VIRT=y
> >  CONFIG_MAXPHYSMEM_2GB=y
> >  CONFIG_SMP=y
> >  CONFIG_CMDLINE="root=/dev/vda rw 
> > earlycon=uart8250,mmio,0x1000,115200n8 console=ttyS0"
> > @@ -48,7 +49,6 @@ CONFIG_VIRTIO_BLK=y
> >  # CONFIG_SERIO is not set
> >  # CONFIG_LEGACY_PTYS is not set
> >  # CONFIG_LDISC_AUTOLOAD is not set
> > -# CONFIG_DEVMEM is not set
> >  CONFIG_SERIAL_8250=y
> >  # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
> >  CONFIG_SERIAL_8250_CONSOLE=y
> > @@ -56,16 +56,13 @@ CONFIG_SERIAL_8250_NR_UARTS=1
> >  CONFIG_SERIAL_8250_RUNTIME_UARTS=1
> >  CONFIG_SERIAL_OF_PLATFORM=y
> >  # CONFIG_HW_RANDOM is not set
> > +# CONFIG_DEVMEM is not set
> >  # CONFIG_HWMON is not set
> > -# CONFIG_LCD_CLASS_DEVICE is not set
> > -# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
>
> Why these changes are in the diff ?

These are generated by "make savedefconfig".

To preserve bisectability, I have enabled CONFIG_SOC_VIRT
in nommu_virt_defconfig and I have used "make savedefconfig"
to update nommu_virt_defconfig.

>
> >  # CONFIG_VGA_CONSOLE is not set
> >  # CONFIG_HID is not set
> >  # CONFIG_USB_SUPPORT is not set
> >  CONFIG_VIRTIO_MMIO=y
> >  CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
> > -CONFIG_SIFIVE_PLIC=y
> > -# CONFIG_VALIDATE_FS_PARSER is not set
> >  CONFIG_EXT2_FS=y
> >  # CONFIG_DNOTIFY is not set
> >  # CONFIG_INOTIFY_USER is not set
> > diff --git a/arch/riscv/include/asm/clint.h b/arch/riscv/include/asm/clint.h
> > deleted file mode 100644
> > index adaba98a7d6c..
> > --- a/arch/riscv/include/asm/clint.h
> > +++ /dev/null
> > @@ -1,14 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -#ifndef _ASM_RISCV_CLINT_H
> > -#define _ASM_RISCV_CLINT_H 1
> > -
> > -#include 
> > -#include 
> > -
> > -#ifdef

Re: [PATCH v6 3/4] RISC-V: Remove CLINT related code from timer and arch

2020-07-24 Thread Atish Patra 
On Fri, Jul 24, 2020 at 12:19 AM Anup Patel  wrote:
>
> Right now the RISC-V timer driver is convoluted to support:
> 1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for
>clocksource and SBI timer calls for clockevent device.
> 2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO
>counter register for clocksource and CLINT MMIO compare register
>for clockevent device.
>
> We now have a separate CLINT timer driver which also provide CLINT
> based IPI operations so let's remove CLINT MMIO related code from
> arch/riscv directory and RISC-V timer driver.
>
> Signed-off-by: Anup Patel 
> Tested-by: Emil Renner Berhing 
> Acked-by: Daniel Lezcano 
> ---
>  arch/riscv/Kconfig  |  2 +-
>  arch/riscv/Kconfig.socs |  2 +
>  arch/riscv/configs/nommu_virt_defconfig |  7 +--
>  arch/riscv/include/asm/clint.h  | 14 --
>  arch/riscv/include/asm/timex.h  | 28 +++
>  arch/riscv/kernel/Makefile  |  2 +-
>  arch/riscv/kernel/clint.c   | 63 -
>  arch/riscv/kernel/setup.c   |  2 -
>  arch/riscv/kernel/smp.c |  1 -
>  arch/riscv/kernel/smpboot.c |  1 -
>  drivers/clocksource/Kconfig |  3 +-
>  drivers/clocksource/timer-riscv.c   | 17 +--
>  12 files changed, 16 insertions(+), 126 deletions(-)
>  delete mode 100644 arch/riscv/include/asm/clint.h
>  delete mode 100644 arch/riscv/kernel/clint.c
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index fedb4a72b29a..57a72ae23d10 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -74,7 +74,7 @@ config RISCV
> select PCI_DOMAINS_GENERIC if PCI
> select PCI_MSI if PCI
> select RISCV_INTC
> -   select RISCV_TIMER
> +   select RISCV_TIMER if RISCV_SBI
> select SPARSEMEM_STATIC if 32BIT
> select SPARSE_IRQ
> select SYSCTL_EXCEPTION_TRACE
> diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
> index 6c88148f1b9b..8a55f6156661 100644
> --- a/arch/riscv/Kconfig.socs
> +++ b/arch/riscv/Kconfig.socs
> @@ -12,6 +12,7 @@ config SOC_SIFIVE
>
>  config SOC_VIRT
> bool "QEMU Virt Machine"
> +   select CLINT_TIMER if RISCV_M_MODE
> select POWER_RESET
> select POWER_RESET_SYSCON
> select POWER_RESET_SYSCON_POWEROFF
> @@ -24,6 +25,7 @@ config SOC_VIRT
>  config SOC_KENDRYTE
> bool "Kendryte K210 SoC"
> depends on !MMU
> +   select CLINT_TIMER if RISCV_M_MODE
> select SERIAL_SIFIVE if TTY
> select SERIAL_SIFIVE_CONSOLE if TTY
> select SIFIVE_PLIC
> diff --git a/arch/riscv/configs/nommu_virt_defconfig 
> b/arch/riscv/configs/nommu_virt_defconfig
> index cf74e179bf90..cf9388184aa3 100644
> --- a/arch/riscv/configs/nommu_virt_defconfig
> +++ b/arch/riscv/configs/nommu_virt_defconfig
> @@ -26,6 +26,7 @@ CONFIG_EXPERT=y
>  CONFIG_SLOB=y
>  # CONFIG_SLAB_MERGE_DEFAULT is not set
>  # CONFIG_MMU is not set
> +CONFIG_SOC_VIRT=y
>  CONFIG_MAXPHYSMEM_2GB=y
>  CONFIG_SMP=y
>  CONFIG_CMDLINE="root=/dev/vda rw earlycon=uart8250,mmio,0x1000,115200n8 
> console=ttyS0"
> @@ -48,7 +49,6 @@ CONFIG_VIRTIO_BLK=y
>  # CONFIG_SERIO is not set
>  # CONFIG_LEGACY_PTYS is not set
>  # CONFIG_LDISC_AUTOLOAD is not set
> -# CONFIG_DEVMEM is not set
>  CONFIG_SERIAL_8250=y
>  # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
>  CONFIG_SERIAL_8250_CONSOLE=y
> @@ -56,16 +56,13 @@ CONFIG_SERIAL_8250_NR_UARTS=1
>  CONFIG_SERIAL_8250_RUNTIME_UARTS=1
>  CONFIG_SERIAL_OF_PLATFORM=y
>  # CONFIG_HW_RANDOM is not set
> +# CONFIG_DEVMEM is not set
>  # CONFIG_HWMON is not set
> -# CONFIG_LCD_CLASS_DEVICE is not set
> -# CONFIG_BACKLIGHT_CLASS_DEVICE is not set

Why these changes are in the diff ?

>  # CONFIG_VGA_CONSOLE is not set
>  # CONFIG_HID is not set
>  # CONFIG_USB_SUPPORT is not set
>  CONFIG_VIRTIO_MMIO=y
>  CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
> -CONFIG_SIFIVE_PLIC=y
> -# CONFIG_VALIDATE_FS_PARSER is not set
>  CONFIG_EXT2_FS=y
>  # CONFIG_DNOTIFY is not set
>  # CONFIG_INOTIFY_USER is not set
> diff --git a/arch/riscv/include/asm/clint.h b/arch/riscv/include/asm/clint.h
> deleted file mode 100644
> index adaba98a7d6c..
> --- a/arch/riscv/include/asm/clint.h
> +++ /dev/null
> @@ -1,14 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _ASM_RISCV_CLINT_H
> -#define _ASM_RISCV_CLINT_H 1
> -
> -#include 
> -#include 
> -
> -#ifdef CONFIG_RISCV_M_MODE
> -void clint_init_boot_cpu(void);
> -#else /* CONFIG_RISCV_M_MODE */
> -#define clint_init_boot_cpu()  do { } while (0)
> -#endif /* CONFIG_RISCV_M_MODE */
> -
> -#endif /* _ASM_RISCV_CLINT_H */
> diff --git a/arch/riscv/include/asm/timex.h b/arch/riscv/include/asm/timex.h
> index bad2a7c2cda5..a3fb85d505d4 100644
> --- a/arch/riscv/include/asm/timex.h
> +++ b/arch/riscv/include/asm/timex.h
> @@ -7,41 +7,27 @@
>  #define _ASM_RISCV_TIMEX_H
>
>  #include 
> -#include 
>
>  typedef

[PATCH v6 3/4] RISC-V: Remove CLINT related code from timer and arch

2020-07-24 Thread Anup Patel 
Right now the RISC-V timer driver is convoluted to support:
1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for
   clocksource and SBI timer calls for clockevent device.
2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO
   counter register for clocksource and CLINT MMIO compare register
   for clockevent device.

We now have a separate CLINT timer driver which also provide CLINT
based IPI operations so let's remove CLINT MMIO related code from
arch/riscv directory and RISC-V timer driver.

Signed-off-by: Anup Patel 
Tested-by: Emil Renner Berhing 
Acked-by: Daniel Lezcano 
---
 arch/riscv/Kconfig  |  2 +-
 arch/riscv/Kconfig.socs |  2 +
 arch/riscv/configs/nommu_virt_defconfig |  7 +--
 arch/riscv/include/asm/clint.h  | 14 --
 arch/riscv/include/asm/timex.h  | 28 +++
 arch/riscv/kernel/Makefile  |  2 +-
 arch/riscv/kernel/clint.c   | 63 -
 arch/riscv/kernel/setup.c   |  2 -
 arch/riscv/kernel/smp.c |  1 -
 arch/riscv/kernel/smpboot.c |  1 -
 drivers/clocksource/Kconfig |  3 +-
 drivers/clocksource/timer-riscv.c   | 17 +--
 12 files changed, 16 insertions(+), 126 deletions(-)
 delete mode 100644 arch/riscv/include/asm/clint.h
 delete mode 100644 arch/riscv/kernel/clint.c

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index fedb4a72b29a..57a72ae23d10 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -74,7 +74,7 @@ config RISCV
select PCI_DOMAINS_GENERIC if PCI
select PCI_MSI if PCI
select RISCV_INTC
-   select RISCV_TIMER
+   select RISCV_TIMER if RISCV_SBI
select SPARSEMEM_STATIC if 32BIT
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 6c88148f1b9b..8a55f6156661 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -12,6 +12,7 @@ config SOC_SIFIVE
 
 config SOC_VIRT
bool "QEMU Virt Machine"
+   select CLINT_TIMER if RISCV_M_MODE
select POWER_RESET
select POWER_RESET_SYSCON
select POWER_RESET_SYSCON_POWEROFF
@@ -24,6 +25,7 @@ config SOC_VIRT
 config SOC_KENDRYTE
bool "Kendryte K210 SoC"
depends on !MMU
+   select CLINT_TIMER if RISCV_M_MODE
select SERIAL_SIFIVE if TTY
select SERIAL_SIFIVE_CONSOLE if TTY
select SIFIVE_PLIC
diff --git a/arch/riscv/configs/nommu_virt_defconfig 
b/arch/riscv/configs/nommu_virt_defconfig
index cf74e179bf90..cf9388184aa3 100644
--- a/arch/riscv/configs/nommu_virt_defconfig
+++ b/arch/riscv/configs/nommu_virt_defconfig
@@ -26,6 +26,7 @@ CONFIG_EXPERT=y
 CONFIG_SLOB=y
 # CONFIG_SLAB_MERGE_DEFAULT is not set
 # CONFIG_MMU is not set
+CONFIG_SOC_VIRT=y
 CONFIG_MAXPHYSMEM_2GB=y
 CONFIG_SMP=y
 CONFIG_CMDLINE="root=/dev/vda rw earlycon=uart8250,mmio,0x1000,115200n8 
console=ttyS0"
@@ -48,7 +49,6 @@ CONFIG_VIRTIO_BLK=y
 # CONFIG_SERIO is not set
 # CONFIG_LEGACY_PTYS is not set
 # CONFIG_LDISC_AUTOLOAD is not set
-# CONFIG_DEVMEM is not set
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
 CONFIG_SERIAL_8250_CONSOLE=y
@@ -56,16 +56,13 @@ CONFIG_SERIAL_8250_NR_UARTS=1
 CONFIG_SERIAL_8250_RUNTIME_UARTS=1
 CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
+# CONFIG_DEVMEM is not set
 # CONFIG_HWMON is not set
-# CONFIG_LCD_CLASS_DEVICE is not set
-# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
 # CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
-CONFIG_SIFIVE_PLIC=y
-# CONFIG_VALIDATE_FS_PARSER is not set
 CONFIG_EXT2_FS=y
 # CONFIG_DNOTIFY is not set
 # CONFIG_INOTIFY_USER is not set
diff --git a/arch/riscv/include/asm/clint.h b/arch/riscv/include/asm/clint.h
deleted file mode 100644
index adaba98a7d6c..
--- a/arch/riscv/include/asm/clint.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_RISCV_CLINT_H
-#define _ASM_RISCV_CLINT_H 1
-
-#include 
-#include 
-
-#ifdef CONFIG_RISCV_M_MODE
-void clint_init_boot_cpu(void);
-#else /* CONFIG_RISCV_M_MODE */
-#define clint_init_boot_cpu()  do { } while (0)
-#endif /* CONFIG_RISCV_M_MODE */
-
-#endif /* _ASM_RISCV_CLINT_H */
diff --git a/arch/riscv/include/asm/timex.h b/arch/riscv/include/asm/timex.h
index bad2a7c2cda5..a3fb85d505d4 100644
--- a/arch/riscv/include/asm/timex.h
+++ b/arch/riscv/include/asm/timex.h
@@ -7,41 +7,27 @@
 #define _ASM_RISCV_TIMEX_H
 
 #include 
-#include 
 
 typedef unsigned long cycles_t;
 
-extern u64 __iomem *riscv_time_val;
-extern u64 __iomem *riscv_time_cmp;
-
-#ifdef CONFIG_64BIT
-#define mmio_get_cycles()  readq_relaxed(riscv_time_val)
-#else
-#define mmio_get_cycles()  readl_relaxed(riscv_time_val)
-#define mmio_get_cycles_hi()   readl_relaxed(((u32 *)riscv_time_val) + 1)
-#endif
-
 static inline