xref: /freebsd-10.2-release/sys/contrib/octeon-sdk/cvmx-sysinfo.h

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/**
 * @file
 *
 * This module provides system/board information obtained by the bootloader.
 *
 * <hr>$Revision: 41586 $<hr>
 *
 */


#ifndef __CVMX_SYSINFO_H__
#define __CVMX_SYSINFO_H__

#include "cvmx-app-init.h"

#ifdef	__cplusplus
extern "C" {
#endif

#define OCTEON_SERIAL_LEN 20
/**
 * Structure describing application specific information.
 * __cvmx_app_init() populates this from the cvmx boot descriptor.
 * This structure is private to simple executive applications, so
 * no versioning is required.
 *
 * This structure must be provided with some fields set in order to use
 * simple executive functions in other applications (Linux kernel, u-boot, etc.)
 * The cvmx_sysinfo_minimal_initialize() function is provided to set the required values
 * in these cases.
 *
 *
 */
typedef struct {
    /* System wide variables */
    uint64_t system_dram_size;  /**< installed DRAM in system, in bytes */
    void *phy_mem_desc_ptr;  /**< ptr to memory descriptor block */

    /* Application image specific variables */
    uint64_t stack_top;  /**< stack top address (virtual) */
    uint64_t heap_base;  /**< heap base address (virtual) */
    uint32_t stack_size; /**< stack size in bytes */
    uint32_t heap_size;  /**< heap size in bytes */
    uint32_t core_mask;  /**< coremask defining cores running application */
    uint32_t init_core;  /**< Deprecated, use cvmx_coremask_first_core() to select init core */
    uint64_t exception_base_addr;  /**< exception base address, as set by bootloader */
    uint32_t cpu_clock_hz;     /**< cpu clock speed in hz */
    uint32_t dram_data_rate_hz;  /**< dram data rate in hz (data rate = 2 * clock rate */

    uint16_t board_type;
    uint8_t  board_rev_major;
    uint8_t  board_rev_minor;
    uint8_t  mac_addr_base[6];
    uint8_t  mac_addr_count;
    char     board_serial_number[OCTEON_SERIAL_LEN];
    /* Several boards support compact flash on the Octeon boot bus.  The CF
    ** memory spaces may be mapped to different addresses on different boards.
    ** These values will be 0 if CF is not present.
    ** Note that these addresses are physical addresses, and it is up to the application
    ** to use the proper addressing mode (XKPHYS, KSEG0, etc.)*/
    uint64_t compact_flash_common_base_addr;
    uint64_t compact_flash_attribute_base_addr;
    /* Base address of the LED display (as on EBT3000 board)
    ** This will be 0 if LED display not present.
    ** Note that this address is a physical address, and it is up to the application
    ** to use the proper addressing mode (XKPHYS, KSEG0, etc.)*/
    uint64_t led_display_base_addr;
    uint32_t dfa_ref_clock_hz;  /**< DFA reference clock in hz (if applicable)*/
    uint32_t bootloader_config_flags;  /**< configuration flags from bootloader */
    uint8_t  console_uart_num;         /** < Uart number used for console */
} cvmx_sysinfo_t;


/**
 * This function returns the system/board information as obtained
 * by the bootloader.
 *
 *
 * @return  Pointer to the boot information structure
 *
 */

extern cvmx_sysinfo_t * cvmx_sysinfo_get(void);


/**
 * This function is used in non-simple executive environments (such as Linux kernel, u-boot, etc.)
 * to configure the minimal fields that are required to use
 * simple executive files directly.
 *
 * Locking (if required) must be handled outside of this
 * function
 *
 * @param phy_mem_desc_ptr
 *                   Pointer to global physical memory descriptor (bootmem descriptor)
 * @param board_type Octeon board type enumeration
 *
 * @param board_rev_major
 *                   Board major revision
 * @param board_rev_minor
 *                   Board minor revision
 * @param cpu_clock_hz
 *                   CPU clock freqency in hertz
 *
 * @return 0: Failure
 *         1: success
 */
extern int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr, uint16_t board_type, uint8_t board_rev_major,
                                    uint8_t board_rev_minor, uint32_t cpu_clock_hz);

#ifdef CVMX_BUILD_FOR_LINUX_USER
/**
 * Initialize the sysinfo structure when running on
 * Octeon under Linux userspace
 */
extern void cvmx_sysinfo_linux_userspace_initialize(void);
#endif

#ifdef	__cplusplus
}
#endif

#endif /* __CVMX_SYSINFO_H__ */