From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- drivers/renesas/common/common.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 drivers/renesas/common/common.c (limited to 'drivers/renesas/common/common.c') diff --git a/drivers/renesas/common/common.c b/drivers/renesas/common/common.c new file mode 100644 index 0000000..a0aa480 --- /dev/null +++ b/drivers/renesas/common/common.c @@ -0,0 +1,38 @@ +/* + * Copyright (c) 2018-2021, Renesas Electronics Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include + +#include "cpg_registers.h" +#include "rcar_private.h" + +#if IMAGE_BL31 +void __attribute__ ((section(".system_ram"))) cpg_write(uintptr_t regadr, uint32_t regval) +#else +void cpg_write(uintptr_t regadr, uint32_t regval) +#endif +{ + uint32_t value = regval; + + mmio_write_32(CPG_CPGWPR, ~value); + mmio_write_32(regadr, value); +} + +#if IMAGE_BL31 +void __attribute__ ((section(".system_ram"))) mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, + uint32_t target_bit) +#else +void mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, uint32_t target_bit) +#endif +{ + uint32_t reg; + + reg = mmio_read_32(mstpcr); + reg &= ~target_bit; + cpg_write(mstpcr, reg); + while ((mmio_read_32(mstpsr) & target_bit) != 0U) { + } +} -- cgit v1.2.3