cvmx-sysinfo.h revision 210284
1/***********************license start*************** 2 * Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights 3 * reserved. 4 * 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * * Neither the name of Cavium Networks nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written 21 * permission. 22 * 23 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 24 * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS 25 * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH 26 * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY 27 * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT 28 * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES 29 * OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR 30 * PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET 31 * POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT 32 * OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 33 * 34 * 35 * For any questions regarding licensing please contact marketing@caviumnetworks.com 36 * 37 ***********************license end**************************************/ 38 39 40 41 42 43 44/** 45 * @file 46 * 47 * This module provides system/board information obtained by the bootloader. 48 * 49 * <hr>$Revision: 41586 $<hr> 50 * 51 */ 52 53 54#ifndef __CVMX_SYSINFO_H__ 55#define __CVMX_SYSINFO_H__ 56 57#include "cvmx-app-init.h" 58 59#ifdef __cplusplus 60extern "C" { 61#endif 62 63#define OCTEON_SERIAL_LEN 20 64/** 65 * Structure describing application specific information. 66 * __cvmx_app_init() populates this from the cvmx boot descriptor. 67 * This structure is private to simple executive applications, so 68 * no versioning is required. 69 * 70 * This structure must be provided with some fields set in order to use 71 * simple executive functions in other applications (Linux kernel, u-boot, etc.) 72 * The cvmx_sysinfo_minimal_initialize() function is provided to set the required values 73 * in these cases. 74 * 75 * 76 */ 77typedef struct { 78 /* System wide variables */ 79 uint64_t system_dram_size; /**< installed DRAM in system, in bytes */ 80 void *phy_mem_desc_ptr; /**< ptr to memory descriptor block */ 81 82 /* Application image specific variables */ 83 uint64_t stack_top; /**< stack top address (virtual) */ 84 uint64_t heap_base; /**< heap base address (virtual) */ 85 uint32_t stack_size; /**< stack size in bytes */ 86 uint32_t heap_size; /**< heap size in bytes */ 87 uint32_t core_mask; /**< coremask defining cores running application */ 88 uint32_t init_core; /**< Deprecated, use cvmx_coremask_first_core() to select init core */ 89 uint64_t exception_base_addr; /**< exception base address, as set by bootloader */ 90 uint32_t cpu_clock_hz; /**< cpu clock speed in hz */ 91 uint32_t dram_data_rate_hz; /**< dram data rate in hz (data rate = 2 * clock rate */ 92 93 uint16_t board_type; 94 uint8_t board_rev_major; 95 uint8_t board_rev_minor; 96 uint8_t mac_addr_base[6]; 97 uint8_t mac_addr_count; 98 char board_serial_number[OCTEON_SERIAL_LEN]; 99 /* Several boards support compact flash on the Octeon boot bus. The CF 100 ** memory spaces may be mapped to different addresses on different boards. 101 ** These values will be 0 if CF is not present. 102 ** Note that these addresses are physical addresses, and it is up to the application 103 ** to use the proper addressing mode (XKPHYS, KSEG0, etc.)*/ 104 uint64_t compact_flash_common_base_addr; 105 uint64_t compact_flash_attribute_base_addr; 106 /* Base address of the LED display (as on EBT3000 board) 107 ** This will be 0 if LED display not present. 108 ** Note that this address is a physical address, and it is up to the application 109 ** to use the proper addressing mode (XKPHYS, KSEG0, etc.)*/ 110 uint64_t led_display_base_addr; 111 uint32_t dfa_ref_clock_hz; /**< DFA reference clock in hz (if applicable)*/ 112 uint32_t bootloader_config_flags; /**< configuration flags from bootloader */ 113 uint8_t console_uart_num; /** < Uart number used for console */ 114} cvmx_sysinfo_t; 115 116 117/** 118 * This function returns the system/board information as obtained 119 * by the bootloader. 120 * 121 * 122 * @return Pointer to the boot information structure 123 * 124 */ 125 126extern cvmx_sysinfo_t * cvmx_sysinfo_get(void); 127 128 129/** 130 * This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.) 131 * to configure the minimal fields that are required to use 132 * simple executive files directly. 133 * 134 * Locking (if required) must be handled outside of this 135 * function 136 * 137 * @param phy_mem_desc_ptr 138 * Pointer to global physical memory descriptor (bootmem descriptor) 139 * @param board_type Octeon board type enumeration 140 * 141 * @param board_rev_major 142 * Board major revision 143 * @param board_rev_minor 144 * Board minor revision 145 * @param cpu_clock_hz 146 * CPU clock freqency in hertz 147 * 148 * @return 0: Failure 149 * 1: success 150 */ 151extern int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr, uint16_t board_type, uint8_t board_rev_major, 152 uint8_t board_rev_minor, uint32_t cpu_clock_hz); 153 154#ifdef CVMX_BUILD_FOR_LINUX_USER 155/** 156 * Initialize the sysinfo structure when running on 157 * Octeon under Linux userspace 158 */ 159extern void cvmx_sysinfo_linux_userspace_initialize(void); 160#endif 161 162#ifdef __cplusplus 163} 164#endif 165 166#endif /* __CVMX_SYSINFO_H__ */ 167