drivers/trusty/trusty-log.h

#ifndef _TRUSTY_LOG_H_
#define _TRUSTY_LOG_H_

/*
 * Ring buffer that supports one secure producer thread and one
 * linux side consumer thread.
 */
struct log_rb {
	volatile uint32_t alloc;
	volatile uint32_t put;
	uint32_t sz;
	volatile char data[0];
} __packed;

#define SMC_SC_SHARED_LOG_VERSION	SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 0)
#define SMC_SC_SHARED_LOG_ADD		SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 1)
#define SMC_SC_SHARED_LOG_RM		SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 2)

#define TRUSTY_LOG_API_VERSION	1

#endif