diff options
Diffstat (limited to 'arch/arm/cpu/armv7/ls102xa/fsl_epu.c')
-rw-r--r-- | arch/arm/cpu/armv7/ls102xa/fsl_epu.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/fsl_epu.c b/arch/arm/cpu/armv7/ls102xa/fsl_epu.c new file mode 100644 index 0000000..6212640 --- /dev/null +++ b/arch/arm/cpu/armv7/ls102xa/fsl_epu.c @@ -0,0 +1,57 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> + +#include "fsl_epu.h" + +/** + * fsl_epu_clean - Clear EPU registers + */ +void fsl_epu_clean(void *epu_base) +{ + u32 offset; + + /* follow the exact sequence to clear the registers */ + /* Clear EPACRn */ + for (offset = EPACR0; offset <= EPACR15; offset += EPACR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPEVTCRn */ + for (offset = EPEVTCR0; offset <= EPEVTCR9; offset += EPEVTCR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPGCR */ + out_be32(epu_base + EPGCR, 0); + + /* Clear EPSMCRn */ + for (offset = EPSMCR0; offset <= EPSMCR15; offset += EPSMCR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPCCRn */ + for (offset = EPCCR0; offset <= EPCCR31; offset += EPCCR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPCMPRn */ + for (offset = EPCMPR0; offset <= EPCMPR31; offset += EPCMPR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPCTRn */ + for (offset = EPCTR0; offset <= EPCTR31; offset += EPCTR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPIMCRn */ + for (offset = EPIMCR0; offset <= EPIMCR31; offset += EPIMCR_STRIDE) + out_be32(epu_base + offset, 0); + + /* Clear EPXTRIGCRn */ + out_be32(epu_base + EPXTRIGCR, 0); + + /* Clear EPECRn */ + for (offset = EPECR0; offset <= EPECR15; offset += EPECR_STRIDE) + out_be32(epu_base + offset, 0); +} |