100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
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/*
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* Copyright (c) 2016 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* EXYNOS - Logging message from Secure World
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* Author: Junho Choi <junhosj.choi@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __EXYNOS_SECLOG_H
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#define __EXYNOS_SECLOG_H
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/* Error code */
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#define ERROR_INVALID_LOG_LEN (-1)
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#define ERROR_INVALID_LOG_ADDR (-2)
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#define ERROR_INVALID_INTR_NUM (-3)
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#define ERROR_ALREADY_INITIALIZED (-4)
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/* Error code from LDFW */
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#define ERROR_LDFW_ALREADY_INITIALIZED (1)
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#define ERROR_LDFW_CALL_FROM_NON_SECURE (2)
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#define ERROR_NOT_SUPPORT_LDFW_ERR_VALUE (0xE)
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#define ERROR_NOT_SUPPORT_LDFW_SEC_LOG (0xF)
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#define BITLEN_LDFW_ERROR (4)
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#define MASK_LDFW_ERROR (0xF)
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#define SHIFT_LDFW_MAGIC (28)
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#define MASK_LDFW_MAGIC (0xF << SHIFT_LDFW_MAGIC)
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#define LDFW_MAGIC (0xA << SHIFT_LDFW_MAGIC)
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#define LDFW_MAX_NUM (7)
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/* Secure log buffer information */
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#define SECLOG_LOG_BUF_SIZE (0x10000)
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/* Alignment with 4 bytes */
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#define FOUR_BYTES_SHIFT (2)
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#define FOUR_BYTES_MASK ((1 << FOUR_BYTES_SHIFT) - 1)
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/*
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* If input address is not aligned with 4 bytes,
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* it makes this address be aligned with next 4 bytes.
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* Otherwise, there is no action.
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*/
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#define CHECK_AND_ALIGN_4BYTES(addr) do { \
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if ((addr) & FOUR_BYTES_MASK) { \
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addr &= ~FOUR_BYTES_MASK; \
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addr += (1 << FOUR_BYTES_SHIFT); \
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} \
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} while (0)
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#ifndef __ASSEMBLY__
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/* Reserved memory data */
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struct seclog_data {
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void *virt_addr;
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unsigned long phys_addr;
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unsigned long size;
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};
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/* Context for Secure log */
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struct seclog_ctx {
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struct work_struct work;
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/* debugfs root */
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struct dentry *debug_dir;
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/* seclog can be disabled via debugfs */
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bool enabled;
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unsigned int irq;
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};
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/* Log header information */
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struct log_header_info {
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unsigned int log_len;
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unsigned int tv_sec;
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unsigned int tv_usec;
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};
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/* Secure log information shared with EL3 Monitor and LDFWs */
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struct sec_log_info {
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/* The count to write log */
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unsigned int log_write_cnt;
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/* The count to read log */
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unsigned int log_read_cnt;
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/*
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* The log count when log_buf
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* returns to initial_log_buf
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*/
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unsigned int log_return_cnt;
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/* Start log buffer address */
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unsigned long start_log_addr;
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/* Initial log buffer address */
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unsigned long initial_log_addr;
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};
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#endif /* __ASSEMBLY__ */
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#endif /* __EXYNOS_SECLOG_H */
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