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| author | Sai Varun Venkatapuram <saivarun.venkatapuram@amd.com> | 2026-08-18 14:24:37 +0530 |
|---|---|---|
| committer | Sai Varun Venkatapuram <saivarun.venkatapuram@amd.com> | 2026-09-02 02:26:20 +0530 |
| commit | 7bfbe677294ee576e3d0fc9d5f7386d430ae0463 (patch) | |
| tree | 2a242874ec3d5dd64d58e9182f125326ce67ada9 | |
| parent | ec049085c570e0481cfca21d6b9f98f780375678 (diff) | |
| download | arm-trusted-firmware-7bfbe677294ee576e3d0fc9d5f7386d430ae0463.tar.gz arm-trusted-firmware-7bfbe677294ee576e3d0fc9d5f7386d430ae0463.zip | |
feat(versal-net): add PMC_TAP accessors for SOC ID
Implement get_pmc_tap_idcode() and get_pmc_tap_version() functions
to directly read PMC_TAP.IDCODE and PMC_TAP.VERSION registers.
On Versal NET, PMC_TAP is covered by the runtime-mapped DEVICE2 region,
so direct mmio_read_32 access is safe from the SMCCC handler.
Change-Id: I97c2536ef9d8b0c0162d16135aeb5958086bb48e
Signed-off-by: Sai Varun Venkatapuram <saivarun.venkatapuram@amd.com>
| -rw-r--r-- | plat/xilinx/versal_net/aarch64/versal_net_common.c | 17 | ||||
| -rw-r--r-- | plat/xilinx/versal_net/include/versal_net_def.h | 3 |
2 files changed, 18 insertions, 2 deletions
diff --git a/plat/xilinx/versal_net/aarch64/versal_net_common.c b/plat/xilinx/versal_net/aarch64/versal_net_common.c index 79e44c348..6f7a87022 100644 --- a/plat/xilinx/versal_net/aarch64/versal_net_common.c +++ b/plat/xilinx/versal_net/aarch64/versal_net_common.c @@ -1,7 +1,7 @@ /* * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved. * Copyright (c) 2018-2022, Xilinx, Inc. All rights reserved. - * Copyright (c) 2022-2025, Advanced Micro Devices, Inc. All rights reserved. + * Copyright (c) 2022-2026, Advanced Micro Devices, Inc. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -184,3 +184,18 @@ void get_boot_mode(uint32_t *mode) return; } #endif + +/* + * Versal NET-specific implementations of PMC_TAP accessors. + * PMC_TAP is mapped in DEVICE2 at runtime on Versal NET, so direct read + * is safe. + */ +uint32_t get_pmc_tap_idcode(void) +{ + return mmio_read_32(PMC_TAP_IDCODE); +} + +uint32_t get_pmc_tap_version(void) +{ + return mmio_read_32(PMC_TAP_VERSION); +} diff --git a/plat/xilinx/versal_net/include/versal_net_def.h b/plat/xilinx/versal_net/include/versal_net_def.h index 54f9cc993..6b43e0e51 100644 --- a/plat/xilinx/versal_net/include/versal_net_def.h +++ b/plat/xilinx/versal_net/include/versal_net_def.h @@ -1,7 +1,7 @@ /* * Copyright (c) 2022, Arm Limited and Contributors. All rights reserved. * Copyright (c) 2021-2022, Xilinx, Inc. All rights reserved. - * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. + * Copyright (c) 2022-2026, Advanced Micro Devices, Inc. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -42,6 +42,7 @@ /* For platform detection */ #define PMC_TAP U(0xF11A0000) +#define PMC_TAP_IDCODE PMC_TAP #define PMC_TAP_VERSION (PMC_TAP + 0x4U) # define PLATFORM_MASK GENMASK(27U, 24U) # define PLATFORM_VERSION_MASK GENMASK(31U, 28U) |