target/linux/ubicom32/files/arch/ubicom32/kernel/os_node.c

   1 /*
   2  * arch/ubicom32/kernel/os_node.c
   3  *   <TODO: Replace with short file description>
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  */
  24 #include "linux/types.h"
  25 #include "linux/linkage.h"
  26 #include "linux/uts.h"
  27 #include "linux/utsrelease.h"
  28 #include "linux/version.h"
  29 #include <asm/ocm_size.h>
  30 #include <asm/devtree.h>
  31 #include <asm/ip5000.h>
  32
  33 extern asmlinkage void *_start;
  34
  35 /*
  36  * This file provides static information to the boot code allowing it to decide
  37  * if the os is compatible. Thus hopefully enabling the boot code to prevent
  38  * accidentally booting a kernel that has no hope of running.
  39  */
  40 struct os_node {
  41         struct devtree_node node;
  42         unsigned long version; /* Always 1 */
  43         unsigned long entry_point;
  44         const char    os_name[32]; /* For diagnostic purposes only */
  45         const char    os_version_str[32];
  46         unsigned long os_version_num;
  47         unsigned long expected_ocm_code_start;/* OS Code */
  48         unsigned long expected_ocm_data_end;  /* OS Data */
  49         unsigned long expected_ram_start;
  50         unsigned long expected_ram_end;
  51         unsigned long arch_version;
  52         unsigned long expected_os_syscall_begin;
  53         unsigned long expected_os_syscall_end;
  54 };
  55
  56
  57 extern void __os_syscall_begin;
  58 extern void __os_syscall_end;
  59 /*
  60  * The os_node is only referenced by head.S and should never be modified at
  61  * run-time.
  62  */
  63 asmlinkage const struct os_node _os_node = {
  64         .node = {
  65                 .next = NULL,
  66                 .name = { "OS" },
  67                 .magic = 0x10203040,
  68         },
  69         .version = 0x10002,
  70         .entry_point = (unsigned long)&_start,
  71 #if APP_OCM_CODE_SIZE || APP_OCM_DATA_SIZE
  72         .expected_ocm_code_start = OCMSTART + APP_OCM_CODE_SIZE,
  73         .expected_ocm_data_end   = OCMEND   - APP_OCM_DATA_SIZE,
  74 #else
  75         .expected_ocm_code_start = OCMEND,
  76         .expected_ocm_data_end   = OCMEND,
  77 #endif
  78         .os_name = { UTS_SYSNAME },
  79         .os_version_str = { UTS_RELEASE },
  80         .os_version_num = LINUX_VERSION_CODE,
  81         .expected_ram_start = KERNELSTART,
  82         .expected_ram_end = SDRAMSTART + CONFIG_MIN_RAMSIZE,
  83         .arch_version = UBICOM32_ARCH_VERSION,
  84         .expected_os_syscall_begin = (unsigned long)&__os_syscall_begin,
  85         .expected_os_syscall_end = (unsigned long)&__os_syscall_end,
  86
  87
  88 };