On Tue, Dec 26, 2023 at 02:17:33PM +0800, Leo Yu-Chi Liang wrote:
Kconfig provides SYS_[I|D]CACHE_OFF config options to switch off caches. Provide the corresponding implementation to the options.
Signed-off-by: Leo Yu-Chi Liang ycliang@andestech.com
Reviewed-by: Yu Chien Peter Lin peterlin@andestech.com
arch/riscv/cpu/andesv5/cpu.c | 25 ++++++++++++++++--------- board/AndesTech/ae350/ae350.c | 3 ++- 2 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/arch/riscv/cpu/andesv5/cpu.c b/arch/riscv/cpu/andesv5/cpu.c index 63bc24cdfc..e764f6c5c0 100644 --- a/arch/riscv/cpu/andesv5/cpu.c +++ b/arch/riscv/cpu/andesv5/cpu.c @@ -32,18 +32,25 @@ void harts_early_init(void) if (CONFIG_IS_ENABLED(RISCV_MMODE)) { unsigned long mcache_ctl_val = csr_read(CSR_MCACHE_CTL);
mcache_ctl_val |= (MCACHE_CTL_DC_COHEN | MCACHE_CTL_IC_EN |MCACHE_CTL_DC_EN | MCACHE_CTL_CCTL_SUEN);
mcache_ctl_val |= MCACHE_CTL_CCTL_SUEN;if (!CONFIG_IS_ENABLED(SYS_ICACHE_OFF))mcache_ctl_val |= MCACHE_CTL_IC_EN;if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF))mcache_ctl_val |= (MCACHE_CTL_DC_EN | MCACHE_CTL_DC_COHEN);csr_write(CSR_MCACHE_CTL, mcache_ctl_val);
/** Check mcache_ctl.DC_COHEN, we assume this platform does* not support CM if the bit is hard-wired to 0.*/if (csr_read(CSR_MCACHE_CTL) & MCACHE_CTL_DC_COHEN) {/* Wait for DC_COHSTA bit to be set */while (!(csr_read(CSR_MCACHE_CTL) & MCACHE_CTL_DC_COHSTA));
if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF)) {/** Check mcache_ctl.DC_COHEN, we assume this platform does* not support CM if the bit is hard-wired to 0.*/if (csr_read(CSR_MCACHE_CTL) & MCACHE_CTL_DC_COHEN) {/* Wait for DC_COHSTA bit to be set */while (!(csr_read(CSR_MCACHE_CTL) & MCACHE_CTL_DC_COHSTA));}} diff --git a/board/AndesTech/ae350/ae350.c b/board/AndesTech/ae350/ae350.c index 772c6bf1ee..bef9e3149e 100644 --- a/board/AndesTech/ae350/ae350.c +++ b/board/AndesTech/ae350/ae350.c @@ -102,7 +102,8 @@ void *board_fdt_blob_setup(int *err) void spl_board_init() { /* enable v5l2 cache */
- enable_caches();
- if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
enable_caches();} #endif
-- 2.34.1