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39
40
41/**
42 * @file
43 *
44 * This module provides system/board information obtained by the bootloader.
45 *
46 * <hr>$Revision: 70030 $<hr>
47 *
48 */
49
50
51#ifndef __CVMX_SYSINFO_H__
52#define __CVMX_SYSINFO_H__
53
54#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
55#include "cvmx-app-init.h"
56#endif
57
58#ifdef	__cplusplus
59extern "C" {
60#endif
61
62#define OCTEON_SERIAL_LEN 20
63/**
64 * Structure describing application specific information.
65 * __cvmx_app_init() populates this from the cvmx boot descriptor.
66 * This structure is private to simple executive applications, so no
67 * versioning is required.
68 *
69 * This structure must be provided with some fields set in order to
70 * use simple executive functions in other applications (Linux kernel,
71 * u-boot, etc.)  The cvmx_sysinfo_minimal_initialize() function is
72 * provided to set the required values in these cases.
73 *
74 */
75struct cvmx_sysinfo {
76	/* System wide variables */
77	uint64_t system_dram_size;  /**< installed DRAM in system, in bytes */
78	uint64_t phy_mem_desc_addr;  /**< Address of the memory descriptor block */
79
80	/* Application image specific variables */
81	uint64_t stack_top;  /**< stack top address (virtual) */
82	uint64_t heap_base;  /**< heap base address (virtual) */
83	uint32_t stack_size; /**< stack size in bytes */
84	uint32_t heap_size;  /**< heap size in bytes */
85	uint32_t core_mask;  /**< coremask defining cores running application */
86	uint32_t init_core;  /**< Deprecated, use cvmx_coremask_first_core() to select init core */
87	uint64_t exception_base_addr;  /**< exception base address, as set by bootloader */
88	uint32_t cpu_clock_hz;     /**< cpu clock speed in hz */
89	uint32_t dram_data_rate_hz;  /**< dram data rate in hz (data rate = 2 * clock rate */
90
91	uint16_t board_type;
92	uint8_t  board_rev_major;
93	uint8_t  board_rev_minor;
94	uint8_t  mac_addr_base[6];
95	uint8_t  mac_addr_count;
96	char     board_serial_number[OCTEON_SERIAL_LEN];
97	/*
98	 * Several boards support compact flash on the Octeon boot
99	 * bus.  The CF memory spaces may be mapped to different
100	 * addresses on different boards.  These values will be 0 if
101	 * CF is not present.  Note that these addresses are physical
102	 * addresses, and it is up to the application to use the
103	 * proper addressing mode (XKPHYS, KSEG0, etc.)
104	 */
105	uint64_t compact_flash_common_base_addr;
106	uint64_t compact_flash_attribute_base_addr;
107	/*
108	 * Base address of the LED display (as on EBT3000 board) This
109	 * will be 0 if LED display not present.  Note that this
110	 * address is a physical address, and it is up to the
111	 * application to use the proper addressing mode (XKPHYS,
112	 * KSEG0, etc.)
113	 */
114	uint64_t led_display_base_addr;
115	uint32_t dfa_ref_clock_hz;  /**< DFA reference clock in hz (if applicable)*/
116	uint32_t bootloader_config_flags;  /**< configuration flags from bootloader */
117	uint8_t  console_uart_num;         /** < Uart number used for console */
118     uint64_t fdt_addr; /** pointer to device tree */
119};
120
121#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
122typedef struct cvmx_sysinfo cvmx_sysinfo_t;
123#endif
124
125/**
126 * This function returns the system/board information as obtained
127 * by the bootloader.
128 *
129 *
130 * @return  Pointer to the boot information structure
131 *
132 */
133
134extern struct cvmx_sysinfo *cvmx_sysinfo_get(void);
135
136/**
137 * This function adds the current cpu to sysinfo coremask
138 *
139 */
140
141void cvmx_sysinfo_add_self_to_core_mask(void);
142
143/**
144 * This function removes the current cpu to sysinfo coremask
145 *
146 */
147void cvmx_sysinfo_remove_self_from_core_mask(void);
148
149#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
150/**
151 * This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.)
152 * to configure the minimal fields that are required to use
153 * simple executive files directly.
154 *
155 * Locking (if required) must be handled outside of this
156 * function
157 *
158 * @param phy_mem_desc_addr
159 *                   Address of the global physical memory descriptor (bootmem
160 *                   descriptor)
161 * @param board_type Octeon board type enumeration
162 *
163 * @param board_rev_major
164 *                   Board major revision
165 * @param board_rev_minor
166 *                   Board minor revision
167 * @param cpu_clock_hz
168 *                   CPU clock freqency in hertz
169 *
170 * @return 0: Failure
171 *         1: success
172 */
173extern int cvmx_sysinfo_minimal_initialize(uint64_t phy_mem_desc_addr, uint16_t board_type, uint8_t board_rev_major,
174                                    uint8_t board_rev_minor, uint32_t cpu_clock_hz);
175#endif
176
177#ifdef CVMX_BUILD_FOR_LINUX_USER
178/**
179 * Initialize the sysinfo structure when running on
180 * Octeon under Linux userspace
181 */
182extern void cvmx_sysinfo_linux_userspace_initialize(void);
183#endif
184
185#ifdef	__cplusplus
186}
187#endif
188
189#endif /* __CVMX_SYSINFO_H__ */
190