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annotate packages/hal/arm/sa11x0/assabet/current/src/assabet_misc.c @ 145:2e9a636d9de9 ecos-sw-2000-12-21

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Merge from eCos master repository on 2000-12-21-14:18:40-GMT
author jlarmour
date Fri, 22 Dec 2000 02:37:28 +0000
parents 6b5f480c6929
children e0c0827131d1
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1 //==========================================================================
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2 //
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3 // assabet_misc.c
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4 //
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5 // HAL misc board support code for StrongARM SA1110/Assabet
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: hmt
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36 // Travis C. Furrer <furrer@mit.edu>
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37 // Date: 2000-05-21
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38 // Purpose: HAL board support
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39 // Description: Implementations of HAL board interfaces
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40 //
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41 //####DESCRIPTIONEND####
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42 //
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43 //========================================================================*/
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44
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45 #include <pkgconf/hal.h>
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46 #include <pkgconf/system.h>
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47 #include CYGBLD_HAL_PLATFORM_H
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48
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49 #include <cyg/infra/cyg_type.h> // base types
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50 #include <cyg/infra/cyg_trac.h> // tracing macros
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51 #include <cyg/infra/cyg_ass.h> // assertion macros
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52
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53 #include <cyg/hal/hal_io.h> // IO macros
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54 #include <cyg/hal/hal_arch.h> // Register state info
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55 #include <cyg/hal/hal_diag.h>
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56 #include <cyg/hal/hal_intr.h> // Interrupt names
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57 #include <cyg/hal/hal_cache.h>
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58 #include <cyg/hal/hal_sa11x0.h> // Hardware definitions
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59 #include <cyg/hal/assabet.h> // Platform specifics
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60
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61 #include <cyg/infra/diag.h> // diag_printf
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62
145
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63 // All the MM table layout is here:
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64 #include <cyg/hal/hal_mm.h>
108
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65
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66 void
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67 hal_mmu_init(void)
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68 {
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69 unsigned long ttb_base = SA11X0_RAM_BANK0_BASE + 0x4000;
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70 unsigned long i;
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71
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72 /*
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73 * Set the TTB register
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74 */
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75 asm volatile ("mcr p15,0,%0,c2,c0,0" : : "r"(ttb_base) /*:*/);
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76
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77 /*
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78 * Set the Domain Access Control Register
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79 */
145
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80 i = ARM_ACCESS_DACR_DEFAULT;
108
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81 asm volatile ("mcr p15,0,%0,c3,c0,0" : : "r"(i) /*:*/);
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82
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83 /*
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84 * First clear all TT entries - ie Set them to Faulting
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85 */
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86 memset((void *)ttb_base, 0, ARM_FIRST_LEVEL_PAGE_TABLE_SIZE);
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87
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88 /* Actual Virtual Size Attributes Function */
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89 /* Base Base MB cached? buffered? access permissions */
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90 /* xxx00000 xxx00000 */
117
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91 X_ARM_MMU_SECTION(0x000, 0x500, 32, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Boot flash ROMspace */
108
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92 X_ARM_MMU_SECTION(0x080, 0x080, 4, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Application flash ROM */
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93 X_ARM_MMU_SECTION(0x100, 0x100, 128, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SA-1101 Development Board Registers */
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94 X_ARM_MMU_SECTION(0x180, 0x180, 128, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Ethernet Adaptor */
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95 X_ARM_MMU_SECTION(0x184, 0x184, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* XBusReg */
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96 X_ARM_MMU_SECTION(0x188, 0x188, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SysRegA */
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97 X_ARM_MMU_SECTION(0x18C, 0x18C, 1, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SysRegB */
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98 X_ARM_MMU_SECTION(0x190, 0x190, 4, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CPLD A */
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99 X_ARM_MMU_SECTION(0x194, 0x194, 4, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* CPLD B */
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100 X_ARM_MMU_SECTION(0x200, 0x200, 512, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA Socket A */
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101 X_ARM_MMU_SECTION(0x300, 0x300, 512, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* PCMCIA Sockets B */
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102 X_ARM_MMU_SECTION(0x400, 0x400, 128, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SA1111 Daughter card */
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103 X_ARM_MMU_SECTION(0x480, 0x480, 128, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Video Controller Daughter card */
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104 X_ARM_MMU_SECTION(0x800, 0x800, 0x400, ARM_UNCACHEABLE, ARM_UNBUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* StrongARM(R) Registers */
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105 X_ARM_MMU_SECTION(0xC00, 0, 32, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* DRAM Bank 0 */
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106 X_ARM_MMU_SECTION(0xC00, 0xC00, 32, ARM_UNCACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* DRAM Bank 0 */
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107 X_ARM_MMU_SECTION(0xE00, 0xE00, 128, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* Zeros (Cache Clean) Bank */
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108
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109 }
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110
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111 //
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112 // Board control register support
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113 // Update the board control register (write only). Only the bits
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114 // specified by 'mask' are changed to 'value'.
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115 //
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116
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117 void
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118 assabet_BCR(unsigned long mask, unsigned long value)
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119 {
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120 _assabet_BCR = (_assabet_BCR & ~mask) | (mask & value);
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121 *SA1110_BOARD_CONTROL = _assabet_BCR;
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122 }
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123
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124 //
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125 // Platform specific initialization
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126 //
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127
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128 void
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129 plf_hardware_init(void)
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130 {
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131 // Force "alternate" use of GPIO pins used for LCD screen
126
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132 *SA11X0_GPIO_ALTERNATE_FUNCTION |= 0x000003FC; // Bits 2..9
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133 *SA11X0_GPIO_PIN_DIRECTION |= 0x000003FC; // Bits 2..9
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134 *SA11X0_GPIO_PIN_OUTPUT_CLEAR = 0x000003FC; // Bits 2..9
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135 }
143
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136
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137 #include CYGHWR_MEMORY_LAYOUT_H
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138 typedef void code_fun(void);
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139 void assabet_program_new_stack(void *func)
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140 {
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141 register CYG_ADDRESS stack_ptr asm("sp");
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142 register CYG_ADDRESS old_stack asm("r4");
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143 register code_fun *new_func asm("r0");
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144 old_stack = stack_ptr;
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145 stack_ptr = CYGMEM_REGION_ram + CYGMEM_REGION_ram_SIZE - sizeof(CYG_ADDRESS);
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146 new_func = (code_fun*)func;
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147 new_func();
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148 stack_ptr = old_stack;
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149 return;
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150 }
145
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151
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152 // ------------------------------------------------------------------------
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153 // EOF assabet_misc.c