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https://github.com/ARM-software/arm-trusted-firmware.git
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273b898388
Move debugfs to Vendor-Specific EL3 Monitor Service Calls. Function Identifier for Vendor-Specific EL3 Monitor Service is '7' and allocated subranges of Function identifiers to different services are: 0x87000000-0x8700FFFF-SMC32: Vendor-Specific EL3 Monitor Service Calls 0xC7000000-0xC700FFFF-SMC64: Vendor-Specific EL3 Monitor Service Calls Amend Debugfs FID's to use this range and id. Add a deprecation notice to inform debugfs moved from arm-sip range to Vendor-Specific EL3 range. Debugfs support from arm-sip range will be removed and will not be available after TF-A 2.12 release. Reference to debugfs component level documentation: https://trustedfirmware-a.readthedocs.io/en/latest/components/debugfs-design.html#overview Change-Id: I97a50170178f361f70c95ed0049bc4e278de59d7 Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
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* Copyright (c) 2024, 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 <stdint.h>
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#include <common/debug.h>
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#include <common/runtime_svc.h>
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#include <lib/debugfs.h>
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#include <services/ven_el3_svc.h>
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#include <tools_share/uuid.h>
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/* vendor-specific EL3 UUID */
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DEFINE_SVC_UUID2(ven_el3_svc_uid,
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0xb6011dca, 0x57c4, 0x407e, 0x83, 0xf0,
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0xa7, 0xed, 0xda, 0xf0, 0xdf, 0x6c);
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static int ven_el3_svc_setup(void)
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{
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#if USE_DEBUGFS
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if (debugfs_smc_setup() != 0) {
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return 1;
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}
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#endif /* USE_DEBUGFS */
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return 0;
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}
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/*
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* This function handles Arm defined vendor-specific EL3 Service Calls.
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*/
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static uintptr_t ven_el3_svc_handler(unsigned int smc_fid,
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u_register_t x1,
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u_register_t x2,
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u_register_t x3,
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u_register_t x4,
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void *cookie,
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void *handle,
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u_register_t flags)
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{
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#if USE_DEBUGFS
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/*
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* Dispatch debugfs calls to debugfs SMC handler and return its
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* return value.
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*/
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if (is_debugfs_fid(smc_fid)) {
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return debugfs_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
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handle, flags);
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}
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#endif /* USE_DEBUGFS */
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switch (smc_fid) {
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case VEN_EL3_SVC_UID:
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/* Return UID to the caller */
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SMC_UUID_RET(handle, ven_el3_svc_uid);
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break;
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case VEN_EL3_SVC_VERSION:
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SMC_RET2(handle, VEN_EL3_SVC_VERSION_MAJOR, VEN_EL3_SVC_VERSION_MINOR);
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break;
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default:
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WARN("Unimplemented vendor-specific EL3 Service call: 0x%x\n", smc_fid);
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SMC_RET1(handle, SMC_UNK);
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break;
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}
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}
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/* Define a runtime service descriptor for fast SMC calls */
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DECLARE_RT_SVC(
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ven_el3_svc,
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OEN_VEN_EL3_START,
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OEN_VEN_EL3_END,
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SMC_TYPE_FAST,
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ven_el3_svc_setup,
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ven_el3_svc_handler
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);
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