annotate src/cs/drivers/drv_app/ffs/board/amdsbdrv.c @ 244:96784b8974eb

Switch_ON(): detect charging mode by CHGPRES bit Consider the following scenario: the phone is on, the user plugs in the charger, and then executes the power-off operation. In the Iota VRPC this sequence translates to a switch-off immediately followed by another switch-on - but the CHGSTS bit doesn't get set on the second switch-on cycle! Disassembly of Pirelli's fw shows that they check the CHGPRES bit, and furthermore, if both CHGPRES and ONBSTS are set, the code they pass to their modified Power_ON_Button() function is the one for charging - so let's adopt the same CHGPRES check and the same priority order for switch-on causes.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 03 May 2021 06:51:29 +0000
parents 4e78acac3d88
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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2 * Flash File System (ffs)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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4 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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5 * FFS AMD single bank low level flash driver RAM code
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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6 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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7 * $Id: amdsbdrv.c 1.5.1.3 Tue, 06 Jan 2004 10:57:45 +0100 tsj $
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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8 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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9 ******************************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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10
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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11 #include "ffs.cfg"
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12
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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13 #include "ffs/ffs.h"
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14 #include "ffs/board/drv.h"
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15 #include "ffs/board/ffstrace.h"
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16
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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18 // Due to long branches, we disable all tracing and led function calls.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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19 #undef tlw
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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20 #define tlw(contents)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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21 #undef ttw
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22 #define ttw(contents)
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23
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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24
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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25 #ifdef __GNUC__
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26 asm(".globl ffsdrv_ram_amd_begin");
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27 asm("ffsdrv_ram_amd_begin:");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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29 asm(" .label _ffsdrv_ram_amd_begin");
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30 asm(" .def _ffsdrv_ram_amd_begin");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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31 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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32
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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33
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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34 // IMPORTANT! Apparently, placing the int_disable/enable() function code
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35 // here instead of at the bottom of the file, makes the code crash or
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36 // freeze. Reason is as of yet unknown.
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37
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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38 uint32 amd_int_disable(void);
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39 void amd_int_enable(uint32 tmp);
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40
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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41
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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42 /******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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43 * AMD Single Bank Driver Functions
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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44 ******************************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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45
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46 void ffsdrv_ram_amd_sb_write_halfword(volatile uint16 *addr, uint16 value)
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47 {
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48 volatile char *flash = dev.base;
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49 uint32 cpsr;
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50
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51 ttw(ttr(TTrDrv, "wh(%x,%x)" NL, addr, value));
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52
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53 if (~*addr & value) {
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54 ttw(ttr(TTrFatal, "wh(%x,%x->%x) fatal" NL, addr, *addr, value));
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55 return;
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56 }
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57
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58 cpsr = amd_int_disable();
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59 tlw(led_on(LED_WRITE));
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60
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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61 flash[0xAAAA] = 0xAA; // AMD unlock cycle 1
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62 flash[0x5555] = 0x55; // AMD unlock cycle 2
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63 flash[0xAAAA] = 0xA0;
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64 *addr = value;
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65
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66 while ((*addr ^ value) & 0x80)
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67 ;
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68
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69 tlw(led_off(LED_WRITE));
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70 amd_int_enable(cpsr);
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71 }
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72
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73 // This VERY simple way of erase suspension only works because we run under
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74 // a pre-emptive operating system, so whenever an interrupt occurs, another
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75 // task takes the CPU, and at the end of the interrupt, FFS gets the CPU
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76 // again.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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77 void ffsdrv_ram_amd_sb_erase(uint8 block)
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78 {
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79 volatile char *flash = dev.base;
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80 volatile char *addr;
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81 uint32 cpsr;
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82 uint16 flashpoll;
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83
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84 addr = block2addr(block);
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85
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86 ttw(ttr(TTrDrvEra, "e(%d)" NL, block));
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87
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88 cpsr = amd_int_disable();
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89 tlw(led_on(LED_ERASE));
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90
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91 flash[0xAAAA] = 0xAA; // AMD unlock cycle 1
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92 flash[0x5555] = 0x55; // AMD unlock cycle 2
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93 flash[0xAAAA] = 0x80;
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94 flash[0xAAAA] = 0xAA; // AMD unlock cycle 1
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95 flash[0x5555] = 0x55; // AMD unlock cycle 2
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96 *addr = 0x30; // AMD erase sector command
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97
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98 // Wait for erase to finish.
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99 while ((*addr & 0x80) == 0) {
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100 tlw(led_toggle(LED_ERASE));
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101 // Poll interrupts, taking interrupt mask into account.
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102 if (INT_REQUESTED)
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103 {
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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104 // 1. suspend erase
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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105 // 2. enable interrupts
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106 // .. now the interrupt code executes
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107 // 3. disable interrupts
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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108 // 4. resume erase
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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109
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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110 tlw(led_on(LED_ERASE_SUSPEND));
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111 *addr = 0xB0;
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112
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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113 // wait for erase suspend to finish
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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114 while ((*addr & 0x80) == 0)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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115 ;
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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116
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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117 tlw(led_off(LED_ERASE_SUSPEND));
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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118 amd_int_enable(cpsr);
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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119
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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120 // Other interrupts and tasks run now...
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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121
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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122 cpsr = amd_int_disable();
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 tlw(led_on(LED_ERASE_SUSPEND));
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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124
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 // Before resuming erase we must? check if the erase is really
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 // suspended or if it did finish
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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127 flashpoll = *addr;
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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128 *addr = 0x30;
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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129
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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130 tlw(led_off(LED_ERASE_SUSPEND));
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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131 }
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 }
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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133
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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134 tlw(led_on(LED_ERASE));
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 tlw(led_off(LED_ERASE));
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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136 amd_int_enable(cpsr);
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 }
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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138
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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139
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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140 /******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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141 * Interrupt Enable/Disable
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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142 ******************************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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143
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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144 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 #define NOINLINE __attribute__ ((noinline))
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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146 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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147 #define NOINLINE
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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148 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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149
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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150 uint32 NOINLINE amd_int_disable(void)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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151 {
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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152 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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153 asm(" .code 16");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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154 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 asm(" .state16");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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156 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 asm(" mov A1, #0xC0");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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158 asm(" ldr A2, tct_amd_disable");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 asm(" bx A2 ");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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160
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 asm(".balign 4");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 asm("tct_amd_disable:");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 asm(" .word TCT_Control_Interrupts");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 asm("tct_amd_disable .field _TCT_Control_Interrupts+0,32");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 asm(" .global _TCT_Control_Interrupts");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 }
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 void NOINLINE amd_int_enable(uint32 cpsr)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 {
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 asm(" .code 16");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 asm(" .state16");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 asm(" ldr A2, tct_amd_enable");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 asm(" bx A2 ");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 asm(".balign 4");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 asm("tct_amd_enable:");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 asm(" .word TCT_Control_Interrupts");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 asm("tct_amd_enable .field _TCT_Control_Interrupts+0,32");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 asm(" .global _TCT_Control_Interrupts");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 #endif
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 }
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 // Even though we have this end label, we cannot determine the number of
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 // constant/PC-relative data following the code!
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 #ifdef __GNUC__
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 asm(".globl ffsdrv_ram_amd_end");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 asm("ffsdrv_ram_amd_end:");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 #else
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 asm(" .state32");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 asm(" .label _ffsdrv_ram_amd_end");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 asm(" .def _ffsdrv_ram_amd_end");
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 #endif