117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/***********************license start***************
|
|
* Author: Cavium Networks
|
|
*
|
|
* Contact: support@caviumnetworks.com
|
|
* This file is part of the OCTEON SDK
|
|
*
|
|
* Copyright (c) 2003-2008 Cavium Networks
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, Version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This file is distributed in the hope that it will be useful, but
|
|
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
|
|
* NONINFRINGEMENT. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this file; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
* or visit http://www.gnu.org/licenses/.
|
|
*
|
|
* This file may also be available under a different license from Cavium.
|
|
* Contact Cavium Networks for more information
|
|
***********************license end**************************************/
|
|
|
|
/*
|
|
* This module provides system/board/application information obtained
|
|
* by the bootloader.
|
|
*/
|
|
|
|
#include <asm/octeon/cvmx.h>
|
|
#include <asm/octeon/cvmx-spinlock.h>
|
|
#include <asm/octeon/cvmx-sysinfo.h>
|
|
|
|
/**
|
|
* This structure defines the private state maintained by sysinfo module.
|
|
*
|
|
*/
|
|
static struct {
|
|
struct cvmx_sysinfo sysinfo; /* system information */
|
|
cvmx_spinlock_t lock; /* mutex spinlock */
|
|
|
|
} state = {
|
|
.lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER
|
|
};
|
|
|
|
|
|
/*
|
|
* Global variables that define the min/max of the memory region set
|
|
* up for 32 bit userspace access.
|
|
*/
|
|
uint64_t linux_mem32_min;
|
|
uint64_t linux_mem32_max;
|
|
uint64_t linux_mem32_wired;
|
|
uint64_t linux_mem32_offset;
|
|
|
|
/**
|
|
* This function returns the application information as obtained
|
|
* by the bootloader. This provides the core mask of the cores
|
|
* running the same application image, as well as the physical
|
|
* memory regions available to the core.
|
|
*
|
|
* Returns Pointer to the boot information structure
|
|
*
|
|
*/
|
|
struct cvmx_sysinfo *cvmx_sysinfo_get(void)
|
|
{
|
|
return &(state.sysinfo);
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @phy_mem_desc_ptr:
|
|
* Pointer to global physical memory descriptor
|
|
* (bootmem descriptor) @board_type: Octeon board
|
|
* type enumeration
|
|
*
|
|
* @board_rev_major:
|
|
* Board major revision
|
|
* @board_rev_minor:
|
|
* Board minor revision
|
|
* @cpu_clock_hz:
|
|
* CPU clock freqency in hertz
|
|
*
|
|
* Returns 0: Failure
|
|
* 1: success
|
|
*/
|
|
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)
|
|
{
|
|
|
|
/* The sysinfo structure was already initialized */
|
|
if (state.sysinfo.board_type)
|
|
return 0;
|
|
|
|
memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo));
|
|
state.sysinfo.phy_mem_desc_ptr = phy_mem_desc_ptr;
|
|
state.sysinfo.board_type = board_type;
|
|
state.sysinfo.board_rev_major = board_rev_major;
|
|
state.sysinfo.board_rev_minor = board_rev_minor;
|
|
state.sysinfo.cpu_clock_hz = cpu_clock_hz;
|
|
|
|
return 1;
|
|
}
|
|
|