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下面是一系列用作概念验证的寄存器写入 Linux 命令、应该可以翻译到其他操作系统。 用户可以尝试连接 JTAG、以确认在寄存器写入后 JTAG 是否不可访问。
#set next state in MDCTL register to Disable for LPSC_DEBUG2DMSC
devmem2 0x42000a08 w 0x80000102
#set PTCMD to GO
devmem2 0x42000120 w 0xFFFFFFFF
#[optional] check state. Least significant hex value should be 0x2
devmem2 0x42000808
#set next state in MDCTL register to Disable for LPSC_main_debug
devmem2 0x00400a34 w 0x80000102
#set psc_PTCMD_j to GO and reflect MDCTL change
devmem2 0x00400120 w 0xFFFFFFFF
#[optional] check state. Least significant hex value should be 0x2
devmem2 0x00400834
#[optional] See if DEBUGSS is active. 0x1 is active, 0x0 is non-active. Expectation is 0x0 after register writes were done
devmem2 0x43014300
在某些上下文中、没有与 LPSC_DEBUG2DMSC 和 LPSC_MAIN_DEBUG 关联的器件 ID。 因此、由于 TISCI API 跟踪与器件 ID 相关的电源状态、因此通过 TISCI API (Sciclient_pmGetModuleState) 读取实际上并不会提供 DebugSS 的状态。
