diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/renesas/rcar/common.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/renesas/rcar/common.c b/drivers/renesas/rcar/common.c new file mode 100644 index 0000000000..e82e8b5214 --- /dev/null +++ b/drivers/renesas/rcar/common.c @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2018, Renesas Electronics Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <mmio.h> +#include "rcar_private.h" + +void +#if IMAGE_BL31 + __attribute__ ((section(".system_ram"))) +#endif + cpg_write(uintptr_t regadr, uint32_t regval) +{ + uint32_t value = (regval); + mmio_write_32((uintptr_t) RCAR_CPGWPR, ~value); + mmio_write_32(regadr, value); +} + +void +#if IMAGE_BL31 + __attribute__ ((section(".system_ram"))) +#endif + mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, uint32_t target_bit) +{ + uint32_t reg; + reg = mmio_read_32(mstpcr); + reg &= ~target_bit; + cpg_write(mstpcr, reg); + while ((mmio_read_32(mstpsr) & target_bit) != 0U) { + } +} |