arch/mips/include/asm/octeon/cvmx-sysinfo.h

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2008 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 /*
  29  * This module provides system/board information obtained by the bootloader.
  30  */
  31
  32 #ifndef __CVMX_SYSINFO_H__
  33 #define __CVMX_SYSINFO_H__
  34
  35 #define OCTEON_SERIAL_LEN 20
  36 /**
  37  * Structure describing application specific information.
  38  * __cvmx_app_init() populates this from the cvmx boot descriptor.
  39  * This structure is private to simple executive applications, so
  40  * no versioning is required.
  41  *
  42  * This structure must be provided with some fields set in order to
  43  * use simple executive functions in other applications (Linux kernel,
  44  * u-boot, etc.)  The cvmx_sysinfo_minimal_initialize() function is
  45  * provided to set the required values in these cases.
  46  */
  47 struct cvmx_sysinfo {
  48         /* System wide variables */
  49         /* installed DRAM in system, in bytes */
  50         uint64_t system_dram_size;
  51
  52         /* ptr to memory descriptor block */
  53         void *phy_mem_desc_ptr;
  54
  55
  56         /* Application image specific variables */
  57         /* stack top address (virtual) */
  58         uint64_t stack_top;
  59         /* heap base address (virtual) */
  60         uint64_t heap_base;
  61         /* stack size in bytes */
  62         uint32_t stack_size;
  63         /* heap size in bytes */
  64         uint32_t heap_size;
  65         /* coremask defining cores running application */
  66         uint32_t core_mask;
  67         /* Deprecated, use cvmx_coremask_first_core() to select init core */
  68         uint32_t init_core;
  69
  70         /* exception base address, as set by bootloader */
  71         uint64_t exception_base_addr;
  72
  73         /* cpu clock speed in hz */
  74         uint32_t cpu_clock_hz;
  75
  76         /* dram data rate in hz (data rate = 2 * clock rate */
  77         uint32_t dram_data_rate_hz;
  78
  79
  80         uint16_t board_type;
  81         uint8_t board_rev_major;
  82         uint8_t board_rev_minor;
  83         uint8_t mac_addr_base[6];
  84         uint8_t mac_addr_count;
  85         char board_serial_number[OCTEON_SERIAL_LEN];
  86         /*
  87          * Several boards support compact flash on the Octeon boot
  88          * bus.  The CF memory spaces may be mapped to different
  89          * addresses on different boards.  These values will be 0 if
  90          * CF is not present.  Note that these addresses are physical
  91          * addresses, and it is up to the application to use the
  92          * proper addressing mode (XKPHYS, KSEG0, etc.)
  93          */
  94         uint64_t compact_flash_common_base_addr;
  95         uint64_t compact_flash_attribute_base_addr;
  96         /*
  97          * Base address of the LED display (as on EBT3000 board) This
  98          * will be 0 if LED display not present.  Note that this
  99          * address is a physical address, and it is up to the
 100          * application to use the proper addressing mode (XKPHYS,
 101          * KSEG0, etc.)
 102          */
 103         uint64_t led_display_base_addr;
 104         /* DFA reference clock in hz (if applicable)*/
 105         uint32_t dfa_ref_clock_hz;
 106         /* configuration flags from bootloader */
 107         uint32_t bootloader_config_flags;
 108
 109         /* Uart number used for console */
 110         uint8_t console_uart_num;
 111 };
 112
 113 /**
 114  * This function returns the system/board information as obtained
 115  * by the bootloader.
 116  *
 117  *
 118  * Returns  Pointer to the boot information structure
 119  *
 120  */
 121
 122 extern struct cvmx_sysinfo *cvmx_sysinfo_get(void);
 123
 124 /**
 125  * This function is used in non-simple executive environments (such as
 126  * Linux kernel, u-boot, etc.)  to configure the minimal fields that
 127  * are required to use simple executive files directly.
 128  *
 129  * Locking (if required) must be handled outside of this
 130  * function
 131  *
 132  * @phy_mem_desc_ptr: Pointer to global physical memory descriptor
 133  *                   (bootmem descriptor) @board_type: Octeon board
 134  *                   type enumeration
 135  *
 136  * @board_rev_major:
 137  *                   Board major revision
 138  * @board_rev_minor:
 139  *                   Board minor revision
 140  * @cpu_clock_hz:
 141  *                   CPU clock freqency in hertz
 142  *
 143  * Returns 0: Failure
 144  *         1: success
 145  */
 146 extern int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr,
 147                                            uint16_t board_type,
 148                                            uint8_t board_rev_major,
 149                                            uint8_t board_rev_minor,
 150                                            uint32_t cpu_clock_hz);
 151
 152 #endif /* __CVMX_SYSINFO_H__ */