1 //==========================================================================
5 // Interface for getting system information.
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: gthomas
46 // Purpose: Interface for getting system information.
50 //####DESCRIPTIONEND####
52 //=========================================================================
61 * In order to construct the _bsp_memory_list, some board specific code
62 * may have to size RAM regions. To do this easily and reliably, the code
63 * needs to run from ROM before .bss and .data sections are initialized.
64 * This leads to the problem of where to store the results of the memory
65 * sizing tests. In this case, the _bsp_init_stack routine which sizes
66 * memory and sets up the stack will place the board-specific information
67 * on the stack and return with the stack pointer pointing to a pointer to
68 * the information. That is, addr_of_info = *(void **)sp. The architecture
69 * specific code will then copy that pointer to the _bsp_ram_info_ptr variable
70 * after initializing the .data and .bss sections.
72 void *_bsp_ram_info_ptr;
75 * Name of CPU and board. Should be overridden by arch/board specific
78 struct bsp_platform_info _bsp_platform_info = {
79 "Unknown", /* cpu name */
80 "Unknown", /* board name */
86 * Information about possible data cache. Should be overridden by
87 * by arch/board specific code.
89 struct bsp_cachesize_info _bsp_dcache_info = {
95 * Information about possible instruction cache. Should be overridden by
96 * by arch/board specific code.
98 struct bsp_cachesize_info _bsp_icache_info = {
104 * Information about possible secondary cache. Should be overridden by
105 * by arch/board specific code.
107 struct bsp_cachesize_info _bsp_scache_info = {
114 _bsp_sysinfo(enum bsp_info_id id, va_list ap)
120 case BSP_INFO_PLATFORM:
121 p = va_arg(ap, void *);
122 *(struct bsp_platform_info *)p = _bsp_platform_info;
125 case BSP_INFO_DCACHE:
126 p = va_arg(ap, void *);
127 *(struct bsp_cachesize_info *)p = _bsp_dcache_info;
130 case BSP_INFO_ICACHE:
131 p = va_arg(ap, void *);
132 *(struct bsp_cachesize_info *)p = _bsp_icache_info;
135 case BSP_INFO_SCACHE:
136 p = va_arg(ap, void *);
137 *(struct bsp_cachesize_info *)p = _bsp_scache_info;
140 case BSP_INFO_MEMORY:
141 index = va_arg(ap, int);
142 p = va_arg(ap, void *);
144 if (index >= 0 && index < _bsp_num_mem_regions)
145 *(struct bsp_mem_info *)p = _bsp_memory_list[index];
151 index = va_arg(ap, int);
152 p = va_arg(ap, void *);
154 if (index >= 0 && index < _bsp_num_comms)
155 *(struct bsp_comm_info *)p = _bsp_comm_list[index].info;
156 else if (index == _bsp_num_comms && _bsp_net_channel != NULL)
157 *(struct bsp_comm_info *)p = _bsp_net_channel->info;