Mercurial > ecos
annotate packages/hal/arm/pid/current/src/pid_misc.c @ 50:a0774359f013 ecos-sw-1999-11-02
Merge from eCos master repository on 1999-11-02-17:02:15-GMT
| author | jlarmour |
|---|---|
| date | Tue, 02 Nov 1999 20:57:07 +0000 |
| parents | 443894e2e912 |
| children | c38311975d4f |
| rev | line source |
|---|---|
| 2 | 1 //========================================================================== |
| 2 // | |
| 3 // pid_misc.c | |
| 4 // | |
| 5 // HAL misc board support code for ARM PID7 | |
| 6 // | |
| 7 //========================================================================== | |
| 8 //####COPYRIGHTBEGIN#### | |
| 9 // | |
| 10 // ------------------------------------------- | |
| 11 // The contents of this file are subject to the Cygnus eCos Public License | |
| 12 // Version 1.0 (the "License"); you may not use this file except in | |
| 13 // compliance with the License. You may obtain a copy of the License at | |
| 14 // http://sourceware.cygnus.com/ecos | |
| 15 // | |
| 16 // Software distributed under the License is distributed on an "AS IS" | |
| 17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the | |
| 18 // License for the specific language governing rights and limitations under | |
| 19 // the License. | |
| 20 // | |
| 21 // The Original Code is eCos - Embedded Cygnus Operating System, released | |
| 22 // September 30, 1998. | |
| 23 // | |
| 24 // The Initial Developer of the Original Code is Cygnus. Portions created | |
| 25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. | |
| 26 // ------------------------------------------- | |
| 27 // | |
| 28 //####COPYRIGHTEND#### | |
| 29 //========================================================================== | |
| 30 //#####DESCRIPTIONBEGIN#### | |
| 31 // | |
| 32 // Author(s): gthomas | |
| 33 // Contributors: gthomas | |
| 34 // Date: 1999-02-20 | |
| 35 // Purpose: HAL board support | |
| 36 // Description: Implementations of HAL board interfaces | |
| 37 // | |
| 38 //####DESCRIPTIONEND#### | |
| 39 // | |
| 40 //===========================================================================*/ | |
| 41 | |
| 42 #include <pkgconf/hal.h> | |
| 43 | |
| 44 #include <cyg/infra/cyg_type.h> // base types | |
| 45 #include <cyg/infra/cyg_trac.h> // tracing macros | |
| 46 #include <cyg/infra/cyg_ass.h> // assertion macros | |
| 47 | |
| 48 #include <cyg/hal/hal_io.h> // IO macros | |
| 49 #include <cyg/hal/hal_arch.h> // Register state info | |
| 50 #include <cyg/hal/hal_diag.h> | |
| 51 #include <cyg/hal/hal_intr.h> // necessary? | |
| 52 | |
| 53 /*------------------------------------------------------------------------*/ | |
| 54 // On-board timer | |
| 55 /*------------------------------------------------------------------------*/ | |
| 56 | |
| 57 // Timer registers | |
| 58 #define CYG_DEVICE_TIMER_BASE 0x0A800020 | |
| 59 #define CYG_DEVICE_TIMER_LOAD \ | |
| 60 ((volatile cyg_uint32 *) (CYG_DEVICE_TIMER_BASE + 0x00)) | |
| 61 // Load value, read/write | |
| 62 #define CYG_DEVICE_TIMER_CURRENT \ | |
| 63 ((volatile cyg_uint32 *) (CYG_DEVICE_TIMER_BASE + 0x04)) | |
| 64 // Current value, read | |
| 65 #define CYG_DEVICE_TIMER_CONTROL \ | |
| 66 ((volatile cyg_uint32 *) (CYG_DEVICE_TIMER_BASE + 0x08)) | |
| 67 // Control register, read/write | |
| 68 #define CYG_DEVICE_TIMER_CLEAR \ | |
| 69 ((volatile cyg_uint32 *) (CYG_DEVICE_TIMER_BASE + 0x0C)) | |
| 70 // Clears interrrupt, write only | |
| 71 | |
| 72 // Clock/timer control register | |
| 73 #define CTL_ENABLE 0x80 // Bit 7: 1 - counter enabled | |
| 74 #define CTL_DISABLE 0x00 // 0 - counter disabled | |
| 75 #define CTL_FREERUN 0x00 // Bit 6: 0 - free running counter | |
| 76 #define CTL_PERIODIC 0x40 // 1 - periodic timer mode | |
| 77 #define CTL_SCALE_1 0x00 // Bits 32: 00 - Scale clock by 1 | |
| 78 #define CTL_SCALE_16 0x04 // 01 - Scale by 16 | |
| 79 #define CTL_SCALE_256 0x08 // 10 - Scale by 256 | |
| 80 // 12.8us/tick | |
| 81 | |
| 82 // Interrupt controller registers | |
| 83 #define CYG_DEVICE_ICTL_BASE 0x0A000000 | |
| 84 #define CYG_DEVICE_IRQ_Status \ | |
| 85 ((volatile cyg_uint32 *) (CYG_DEVICE_ICTL_BASE + 0x00)) | |
| 86 // Current status, read only | |
| 87 #define CYG_DEVICE_IRQ_Enable \ | |
| 88 ((volatile cyg_uint32 *) (CYG_DEVICE_ICTL_BASE + 0x08)) | |
| 89 // Enable status, read only | |
| 90 #define CYG_DEVICE_IRQ_EnableSet \ | |
| 91 ((volatile cyg_uint32 *) (CYG_DEVICE_ICTL_BASE + 0x08)) | |
| 92 // Enable (1's only), write only | |
| 93 #define CYG_DEVICE_IRQ_EnableClear \ | |
| 94 ((volatile cyg_uint32 *) (CYG_DEVICE_ICTL_BASE + 0x0C)) | |
| 95 // Disable (1's only), write only | |
| 96 | |
| 97 static cyg_uint32 _period; | |
| 98 | |
| 99 void hal_clock_initialize(cyg_uint32 period) | |
| 100 { | |
| 101 //diag_init(); diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, period); | |
| 102 //diag_printf("psr = %x\n", psr()); | |
| 103 HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CONTROL, CTL_DISABLE); // Turn off | |
| 104 HAL_WRITE_UINT32(CYG_DEVICE_TIMER_LOAD, period); | |
| 105 HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CONTROL, | |
| 106 CTL_ENABLE | CTL_PERIODIC | CTL_SCALE_16); | |
| 107 _period = period; | |
| 108 } | |
| 109 | |
| 110 void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period) | |
| 111 { | |
| 112 //diag_init(); diag_printf("%s\n", __PRETTY_FUNCTION__); | |
| 113 HAL_WRITE_UINT32(CYG_DEVICE_TIMER_CLEAR, 0); | |
| 114 _period = period; | |
| 115 } | |
| 116 | |
| 117 void hal_clock_read(cyg_uint32 *pvalue) | |
| 118 { | |
| 119 cyg_uint32 value; | |
| 120 // diag_init(); diag_printf("%s\n", __PRETTY_FUNCTION__); | |
| 121 HAL_READ_UINT32(CYG_DEVICE_TIMER_CURRENT, value); | |
| 122 value &= 0xFFFF; | |
| 123 *pvalue = _period - (value & 0xFFFF); // Note: counter is only 16 bits | |
| 124 // and decreases | |
| 125 } | |
| 126 | |
| 127 void hal_hardware_init(void) | |
| 128 { | |
| 129 // Any hardware/platform initialization that needs to be done. | |
| 130 HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableClear, 0xFFFF); // Clear all | |
| 131 // interrupt sources | |
| 132 } | |
| 133 | |
| 134 // | |
| 135 // This routine is called to respond to a hardware interrupt (IRQ). It | |
| 136 // should interrogate the hardware and return the IRQ vector number. | |
| 137 | |
| 138 int hal_IRQ_handler(void) | |
| 139 { | |
| 140 // Do hardware-level IRQ handling | |
| 141 int irq_status, vector; | |
| 142 HAL_READ_UINT32(CYG_DEVICE_IRQ_Status, irq_status); | |
| 143 //diag_init(); diag_printf("%s, status: %x\n", __PRETTY_FUNCTION__, irq_status); | |
| 144 for (vector = 1; vector < 16; vector++) { | |
| 145 if (irq_status & (1<<vector)) return vector; | |
| 146 } | |
| 147 return CYGNUM_HAL_INTERRUPT_unused; // This shouldn't happen! | |
| 148 } | |
| 149 | |
| 150 // | |
| 151 // Interrupt control | |
| 152 // | |
| 153 | |
| 154 void hal_interrupt_mask(int vector) | |
| 155 { | |
| 156 //diag_init(); diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, vector); | |
| 157 HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableClear, 1<<vector); | |
| 158 } | |
| 159 | |
| 160 #if 0 | |
| 161 void hal_interrupt_status(void) | |
| 162 { | |
| 163 int irq_status, irq_enable, timer_status, timer_value, timer_load; | |
| 164 HAL_READ_UINT32(CYG_DEVICE_IRQ_Status, irq_status); | |
| 165 HAL_READ_UINT32(CYG_DEVICE_IRQ_Enable, irq_enable); | |
| 166 HAL_READ_UINT32(CYG_DEVICE_TIMER_LOAD, timer_load); | |
| 167 HAL_READ_UINT32(CYG_DEVICE_TIMER_CURRENT, timer_value); | |
| 168 HAL_READ_UINT32(CYG_DEVICE_TIMER_CONTROL, timer_status); | |
| 169 diag_printf("Interrupt: IRQ: %x.%x, TIMER: %x.%x.%x, psr: %x\n", | |
| 170 irq_status, irq_enable, timer_status, timer_value, | |
| 171 timer_load, psr()); | |
| 172 } | |
| 173 #endif | |
| 174 | |
| 175 void hal_interrupt_unmask(int vector) | |
| 176 { | |
| 177 //diag_init(); diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, vector); | |
| 178 HAL_WRITE_UINT32(CYG_DEVICE_IRQ_EnableSet, 1<<vector); | |
| 179 } | |
| 180 | |
| 181 void hal_interrupt_acknowledge(int vector) | |
| 182 { | |
| 183 //diag_init(); diag_printf("%s(%d)\n", __PRETTY_FUNCTION__, vector); | |
| 184 } | |
| 185 | |
| 186 void hal_interrupt_configure(int vector, int level, int up) | |
| 187 { | |
| 188 //diag_init(); diag_printf("%s(%d,%d,%d)\n", __PRETTY_FUNCTION__, vector, level, up); | |
| 189 } | |
| 190 | |
| 191 void hal_interrupt_set_level(int vector, int level) | |
| 192 { | |
| 193 //diag_init(); diag_printf("%s(%d,%d)\n", __PRETTY_FUNCTION__, vector, level); | |
| 194 } | |
| 195 | |
| 196 void hal_show_IRQ(int vector, int data, int handler) | |
| 197 { | |
| 198 // diag_printf("IRQ - vector: %x, data: %x, handler: %x\n", vector, data, handler); | |
| 199 } | |
|
50
a0774359f013
Merge from eCos master repository on 1999-11-02-17:02:15-GMT
jlarmour
parents:
2
diff
changeset
|
200 |
| 2 | 201 /*---------------------------------------------------------------------------*/ |
| 202 /* End of hal_misc.c */ |