scoutos / prex-0.9.0 / include / arm / syspage.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*-
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2 | * Copyright (c) 2008-2009, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | #ifndef _ARM_SYSPAGE_H
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31 | #define _ARM_SYSPAGE_H
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32 | |||
33 | #include <conf/config.h> |
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34 | |||
35 | /**
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36 | * syspage layout:
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37 | *
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38 | * +------------------+ CONFIG_SYSPAGE_BASE
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39 | * | Vector page |
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40 | * | |
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41 | * +------------------+ +0x1000
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42 | * | Interrupt stack |
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43 | * | |
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44 | * +------------------+ +0x2000
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45 | * | Sys mode stack |
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46 | * | |
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47 | * +------------------+ +0x3000
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48 | * | Boot information |
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49 | * +------------------+ +0x3400
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50 | * | Abort mode stack |
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51 | * +------------------+ +0x3800
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52 | * | Boot stack |
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53 | * +------------------+ +0x4000
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54 | * | PGD for boot |
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55 | * | (MMU only) |
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56 | * | |
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57 | * +------------------+ +0x8000
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58 | * | PTE0 for boot |
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59 | * | (MMU only) |
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60 | * +------------------+ +0x9000
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61 | * | PTE1 for UART I/O|
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62 | * | (MMU only) |
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63 | * +------------------+ +0xA000
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64 | |||
65 | *
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66 | * Note1: Kernel PGD must be stored at 16k aligned address.
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67 | *
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68 | * Note2: PTE0 must be stored at 4k aligned address.
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69 | *
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70 | * Note2: Interrupt stack should be placed after NULL page
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71 | * to detect the stack overflow.
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72 | */
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73 | |||
74 | #define SYSPAGE CONFIG_SYSPAGE_BASE
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75 | #define INTSTK (SYSPAGE + 0x1000) |
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76 | #define SYSSTK (SYSPAGE + 0x2000) |
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77 | #define BOOTINFO (SYSPAGE + 0x3000) |
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78 | #define ABTSTK (SYSPAGE + 0x3400) |
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79 | #define BOOTSTK (SYSPAGE + 0x3800) |
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80 | #define BOOT_PGD (SYSPAGE + 0x4000) |
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81 | #define BOOT_PTE0 (SYSPAGE + 0x8000) |
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82 | #define BOOT_PTE1 (SYSPAGE + 0x9000) |
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83 | |||
84 | #define BOOT_PGD_PHYS 0x4000 |
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85 | #define BOOT_PTE0_PHYS 0x8000 |
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86 | #define BOOT_PTE1_PHYS 0x9000 |
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87 | |||
88 | #define INTSTKSZ 0x1000 |
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89 | #define SYSSTKSZ 0x1000 |
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90 | #define ABTSTKSZ 0x400 |
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91 | #define BOOTSTKSZ 0x800 |
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92 | |||
93 | #define INTSTKTOP (INTSTK + INTSTKSZ)
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94 | #define SYSSTKTOP (SYSSTK + SYSSTKSZ)
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95 | #define ABTSTKTOP (ABTSTK + ABTSTKSZ)
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96 | #define BOOTSTKTOP (BOOTSTK + BOOTSTKSZ)
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97 | |||
98 | #ifdef CONFIG_MMU
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99 | #define SYSPAGESZ 0xA000 |
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100 | #else
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101 | #define SYSPAGESZ 0x4000 |
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102 | #endif
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103 | |||
104 | #endif /* !_ARM_SYSPAGE_H */ |