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https://github.com/ARM-software/arm-trusted-firmware.git
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0d21680c35
Remove useless private structure in function prototypes. Add a reference counter on clocks. Prepare for future secured/shared/non-secured clocks. Change-Id: I3dbed81721da5ceff5e10b2c4155b1e340c036ee Signed-off-by: Yann Gautier <yann.gautier@st.com> Signed-off-by: Etienne Carriere <etienne.carriere@st.com> Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Nicolas LE BAYON <nicolas.le.bayon@st.com>
35 lines
778 B
C
35 lines
778 B
C
/*
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* Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <errno.h>
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#include <platform_def.h>
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#include <drivers/st/stm32mp1_clk.h>
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#include <dt-bindings/clock/stm32mp1-clks.h>
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#include <lib/mmio.h>
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#include <stm32mp1_context.h>
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#define TAMP_BOOT_ITF_BACKUP_REG_ID U(20)
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#define TAMP_BOOT_ITF_MASK U(0x0000FF00)
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#define TAMP_BOOT_ITF_SHIFT 8
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int stm32_save_boot_interface(uint32_t interface, uint32_t instance)
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{
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uint32_t bkpr_itf_idx = tamp_bkpr(TAMP_BOOT_ITF_BACKUP_REG_ID);
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stm32mp_clk_enable(RTCAPB);
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mmio_clrsetbits_32(bkpr_itf_idx,
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TAMP_BOOT_ITF_MASK,
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((interface << 4) | (instance & 0xFU)) <<
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TAMP_BOOT_ITF_SHIFT);
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stm32mp_clk_disable(RTCAPB);
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return 0;
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}
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