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docs(zynqmp): update SMC convention

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Updated documentation for SMC SiP calling conventions for IPI,
PM, and SiP Service queries.

Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
Change-Id: I8904628d41b47596257f06791bffb7cde35879de
This commit is contained in:
Prasad Kummari 2024-02-08 17:28:46 +05:30
parent 02088b64f3
commit 93163d988e
1 changed files with 52 additions and 0 deletions
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52
docs/plat/xilinx-zynqmp.rst
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@ -166,3 +166,55 @@ Custom package makefile fragment inclusion in TF-A build
- TF-A build command:
make CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp RESET_TO_BL31=1
bl31 CUSTOM_PKG_PATH=<...>
Reference DEN0028E SMC calling convention
------------------------------------------
Allocated subranges of Function Identifier to SIP services
------------------------------------------------------------
+-----------------------+-------------------------------------------------------+
| SMC Function | Identifier Service type |
+-----------------------+-------------------------------------------------------+
| 0xC2000000-0xC200FFFF | Fast SMC64 SiP Service Calls as per SMCCC Section 6.1 |
+-----------------------+-------------------------------------------------------+
IPI SMC call ranges
-------------------
+---------------------------+-----------------------------------------------------------+
| SMC Function Identifier | Service type |
+---------------------------+-----------------------------------------------------------+
| 0xc2001000-0xc2001FFF | Fast SMC64 SiP Service call range used for AMD-Xilinx IPI |
+---------------------------+-----------------------------------------------------------+
PM SMC call ranges
------------------
+---------------------------+---------------------------------------------------------------------------+
| SMC Function Identifier | Service type |
+---------------------------+---------------------------------------------------------------------------+
| 0xc2000000-0xc2000FFF | Fast SMC64 SiP Service call range used for AMD-Xilinx Platform Management |
+---------------------------+---------------------------------------------------------------------------+
SMC function IDs for SiP Service queries
----------------------------------------
+--------------+--------------+--------------+
| Service | Call UID | Revision |
+--------------+--------------+--------------+
| SiP Service | 0x8200_FF01 | 0x8200_FF03 |
+--------------+--------------+--------------+
Call UID Query – Returns a unique identifier of the service provider.
Revision Query – Returns revision details of the service implementor.
CUSTOM SIP service support
--------------------------
+-------------+------------+------------+
| Service | 32-bit | 64-bit |
+-------------+------------+------------+
| SiP Service | 0x82002000 | 0xC2002000 |
+-------------+------------+------------+