David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 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/application information obtained |
| 30 | * by the bootloader. |
| 31 | */ |
David Daney | 3e903bd | 2009-05-05 17:35:17 -0700 | [diff] [blame] | 32 | #include <linux/module.h> |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 33 | |
| 34 | #include <asm/octeon/cvmx.h> |
| 35 | #include <asm/octeon/cvmx-spinlock.h> |
| 36 | #include <asm/octeon/cvmx-sysinfo.h> |
| 37 | |
| 38 | /** |
| 39 | * This structure defines the private state maintained by sysinfo module. |
| 40 | * |
| 41 | */ |
| 42 | static struct { |
| 43 | struct cvmx_sysinfo sysinfo; /* system information */ |
| 44 | cvmx_spinlock_t lock; /* mutex spinlock */ |
| 45 | |
| 46 | } state = { |
| 47 | .lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER |
| 48 | }; |
| 49 | |
| 50 | |
| 51 | /* |
| 52 | * Global variables that define the min/max of the memory region set |
| 53 | * up for 32 bit userspace access. |
| 54 | */ |
| 55 | uint64_t linux_mem32_min; |
| 56 | uint64_t linux_mem32_max; |
| 57 | uint64_t linux_mem32_wired; |
| 58 | uint64_t linux_mem32_offset; |
| 59 | |
| 60 | /** |
| 61 | * This function returns the application information as obtained |
| 62 | * by the bootloader. This provides the core mask of the cores |
| 63 | * running the same application image, as well as the physical |
| 64 | * memory regions available to the core. |
| 65 | * |
| 66 | * Returns Pointer to the boot information structure |
| 67 | * |
| 68 | */ |
| 69 | struct cvmx_sysinfo *cvmx_sysinfo_get(void) |
| 70 | { |
| 71 | return &(state.sysinfo); |
| 72 | } |
David Daney | 3e903bd | 2009-05-05 17:35:17 -0700 | [diff] [blame] | 73 | EXPORT_SYMBOL(cvmx_sysinfo_get); |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 74 | |
| 75 | /** |
| 76 | * This function is used in non-simple executive environments (such as |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 77 | * Linux kernel, u-boot, etc.) to configure the minimal fields that |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 78 | * are required to use simple executive files directly. |
| 79 | * |
| 80 | * Locking (if required) must be handled outside of this |
| 81 | * function |
| 82 | * |
| 83 | * @phy_mem_desc_ptr: |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 84 | * Pointer to global physical memory descriptor |
| 85 | * (bootmem descriptor) @board_type: Octeon board |
| 86 | * type enumeration |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 87 | * |
| 88 | * @board_rev_major: |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 89 | * Board major revision |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 90 | * @board_rev_minor: |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 91 | * Board minor revision |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 92 | * @cpu_clock_hz: |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 93 | * CPU clock freqency in hertz |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 94 | * |
| 95 | * Returns 0: Failure |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame^] | 96 | * 1: success |
David Daney | 58f0777 | 2008-12-23 15:22:14 -0800 | [diff] [blame] | 97 | */ |
| 98 | int cvmx_sysinfo_minimal_initialize(void *phy_mem_desc_ptr, |
| 99 | uint16_t board_type, |
| 100 | uint8_t board_rev_major, |
| 101 | uint8_t board_rev_minor, |
| 102 | uint32_t cpu_clock_hz) |
| 103 | { |
| 104 | |
| 105 | /* The sysinfo structure was already initialized */ |
| 106 | if (state.sysinfo.board_type) |
| 107 | return 0; |
| 108 | |
| 109 | memset(&(state.sysinfo), 0x0, sizeof(state.sysinfo)); |
| 110 | state.sysinfo.phy_mem_desc_ptr = phy_mem_desc_ptr; |
| 111 | state.sysinfo.board_type = board_type; |
| 112 | state.sysinfo.board_rev_major = board_rev_major; |
| 113 | state.sysinfo.board_rev_minor = board_rev_minor; |
| 114 | state.sysinfo.cpu_clock_hz = cpu_clock_hz; |
| 115 | |
| 116 | return 1; |
| 117 | } |