1 /***********************license start***************
2 * Author: Cavium Networks
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
7 * Copyright (c) 2003-2008 Cavium Networks
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.
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
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/.
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 ***********************license end**************************************/
29 * This module provides system/board/application information obtained
33 #include <asm/octeon/cvmx.h>
34 #include <asm/octeon/cvmx-spinlock.h>
35 #include <asm/octeon/cvmx-sysinfo.h>
38 * This structure defines the private state maintained by sysinfo module.
42 struct cvmx_sysinfo sysinfo
; /* system information */
43 cvmx_spinlock_t lock
; /* mutex spinlock */
46 .lock
= CVMX_SPINLOCK_UNLOCKED_INITIALIZER
51 * Global variables that define the min/max of the memory region set
52 * up for 32 bit userspace access.
54 uint64_t linux_mem32_min
;
55 uint64_t linux_mem32_max
;
56 uint64_t linux_mem32_wired
;
57 uint64_t linux_mem32_offset
;
60 * This function returns the application information as obtained
61 * by the bootloader. This provides the core mask of the cores
62 * running the same application image, as well as the physical
63 * memory regions available to the core.
65 * Returns Pointer to the boot information structure
68 struct cvmx_sysinfo
*cvmx_sysinfo_get(void)
70 return &(state
.sysinfo
);
74 * This function is used in non-simple executive environments (such as
75 * Linux kernel, u-boot, etc.) to configure the minimal fields that
76 * are required to use simple executive files directly.
78 * Locking (if required) must be handled outside of this
82 * Pointer to global physical memory descriptor
83 * (bootmem descriptor) @board_type: Octeon board
87 * Board major revision
89 * Board minor revision
91 * CPU clock freqency in hertz
96 int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr
,
98 uint8_t board_rev_major
,
99 uint8_t board_rev_minor
,
100 uint32_t cpu_clock_hz
)
103 /* The sysinfo structure was already initialized */
104 if (state
.sysinfo
.board_type
)
107 memset(&(state
.sysinfo
), 0x0, sizeof(state
.sysinfo
));
108 state
.sysinfo
.phy_mem_desc_ptr
= phy_mem_desc_ptr
;
109 state
.sysinfo
.board_type
= board_type
;
110 state
.sysinfo
.board_rev_major
= board_rev_major
;
111 state
.sysinfo
.board_rev_minor
= board_rev_minor
;
112 state
.sysinfo
.cpu_clock_hz
= cpu_clock_hz
;