AM62AX Host Descriptions

Introduction

This chapter provides information on the set of HostIDs permitted in this AM62AX SoC. HostIDs uniquely identify each logically distinct high level software entity. A software entity identification number (HostID) can be assigned to an OS either native or virtualized, or a firmware/native application. The HostID is used to select the set of Secure Proxy channels for which this software entity should use to communicate with the System Firmware.

System Firmware also checks that the used HostID comes from software running on the correct core (as implied by Host Name in the below table) and with the correct security level (Security Status column) to prevent HostID spoofing.

Enumeration of Host IDs

Host ID	Host Name	Security Status	Description
0	TIFS	Secure	TI Foundational Security
10	A53_0	Secure	Cortex A53 context 0 on Main island
11	A53_1	Secure	Cortex A53 context 1 on Main island
12	A53_2	Non Secure	Cortex A53 context 2 on Main island
13	A53_3	Non Secure	Cortex A53 context 3 on Main island
14	A53_4	Non Secure	Cortex A53 context 4 on Main island
20	C7X_0_0	Non Secure	C7x_0 Context 0 on Main island
30	MCU_0_R5_0	Non Secure	MCU R5
35	MAIN_0_R5_0	Secure	Cortex R5_0 context 0 on Main island(BOOT)
36	MAIN_0_R5_1	Non Secure	Cortex R5_0 context 1 on Main island
37	MAIN_0_R5_2	Secure	Cortex R5_0 context 2 on Main island
38	MAIN_0_R5_3	Non Secure	Cortex R5_0 context 3 on Main island
250	DM2TIFS	Secure	DM to TIFS communication
251	TIFS2DM	Non Secure	TIFS to DM communication
253	HSM	Secure	HSM Controller
254	DM	Non Secure	Device Management

Note

• Description provides an intended purpose of the host ID, though on some systems, this might be used differently, backing memory and link allocations are made with the specified purpose in mind
• Security Status provides an intended purpose for the Host context