CCTL operations are available to Supervisor/User-mode software under the control of the mcache_ctl.CCTL_SUEN control bit. Enable it to support Supervisor(and User) CCTL operations.
Signed-off-by: Rick Chen rick@andestech.com ---
Changes in v2 - fix typo - correct aligment
---
arch/riscv/cpu/ax25/cpu.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/arch/riscv/cpu/ax25/cpu.c b/arch/riscv/cpu/ax25/cpu.c index c4c2de2ef0..a46674f7c2 100644 --- a/arch/riscv/cpu/ax25/cpu.c +++ b/arch/riscv/cpu/ax25/cpu.c @@ -12,18 +12,20 @@ #include <asm/csr.h>
#define CSR_MCACHE_CTL 0x7ca -#define CSR_MMISC_CTL 0x7d0 -#define CSR_MARCHID 0xf12 +#define CSR_MMISC_CTL 0x7d0 +#define CSR_MARCHID 0xf12
#define V5_MCACHE_CTL_IC_EN_OFFSET 0 #define V5_MCACHE_CTL_DC_EN_OFFSET 1 -#define V5_MCACHE_CTL_DC_COHEN_OFFSET 19 +#define V5_MCACHE_CTL_CCTL_SUEN_OFFSET 8 +#define V5_MCACHE_CTL_DC_COHEN_OFFSET 19 #define V5_MCACHE_CTL_DC_COHSTA_OFFSET 20
-#define V5_MCACHE_CTL_IC_EN BIT(V5_MCACHE_CTL_IC_EN_OFFSET) -#define V5_MCACHE_CTL_DC_EN BIT(V5_MCACHE_CTL_DC_EN_OFFSET) -#define V5_MCACHE_CTL_DC_COHEN_EN BIT(V5_MCACHE_CTL_DC_COHEN_OFFSET) -#define V5_MCACHE_CTL_DC_COHSTA_EN BIT(V5_MCACHE_CTL_DC_COHSTA_OFFSET) +#define V5_MCACHE_CTL_IC_EN BIT(V5_MCACHE_CTL_IC_EN_OFFSET) +#define V5_MCACHE_CTL_DC_EN BIT(V5_MCACHE_CTL_DC_EN_OFFSET) +#define V5_MCACHE_CTL_CCTL_SUEN BIT(V5_MCACHE_CTL_CCTL_SUEN_OFFSET) +#define V5_MCACHE_CTL_DC_COHEN_EN BIT(V5_MCACHE_CTL_DC_COHEN_OFFSET) +#define V5_MCACHE_CTL_DC_COHSTA_EN BIT(V5_MCACHE_CTL_DC_COHSTA_OFFSET)
/* @@ -55,6 +57,8 @@ void harts_early_init(void) mcache_ctl_val |= V5_MCACHE_CTL_IC_EN; if (!(mcache_ctl_val & V5_MCACHE_CTL_DC_EN)) mcache_ctl_val |= V5_MCACHE_CTL_DC_EN; + if (!(mcache_ctl_val & V5_MCACHE_CTL_CCTL_SUEN)) + mcache_ctl_val |= V5_MCACHE_CTL_CCTL_SUEN; csr_write(CSR_MCACHE_CTL, mcache_ctl_val);
/*