[08330bf] | 1 | /*-------------------------------------------------------------------------+ |
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| 2 | | This file contains the ARM BSP startup package. It includes application, |
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| 3 | | board, and monitor specific initialization and configuration. The generic CPU |
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| 4 | | dependent initialization has been performed before this routine is invoked. |
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| 5 | +--------------------------------------------------------------------------+ |
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| 6 | | |
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| 7 | | Copyright (c) 2000 Canon Research Centre France SA. |
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| 8 | | Emmanuel Raguet, mailto:raguet@crf.canon.fr |
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| 9 | | |
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| 10 | | The license and distribution terms for this file may be |
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| 11 | | found in found in the file LICENSE in this distribution or at |
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| 12 | | http://www.OARcorp.com/rtems/license.html. |
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| 13 | | |
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| 14 | +--------------------------------------------------------------------------*/ |
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| 15 | |
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| 16 | |
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| 17 | #include <bsp.h> |
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| 18 | #include <uart.h> |
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| 19 | #include <libcsupport.h> |
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| 20 | #include <rtems/libio.h> |
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| 21 | |
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| 22 | /*-------------------------------------------------------------------------+ |
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| 23 | | Global Variables |
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| 24 | +--------------------------------------------------------------------------*/ |
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| 25 | |
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| 26 | /* |
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| 27 | * must be initialized with the right address |
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| 28 | */ |
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| 29 | volatile unsigned long *Regs = (unsigned long*)0xdeadbeef; /* Chip registers */ |
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| 30 | |
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| 31 | extern rtems_unsigned32 _end; /* End of BSS. Defined in 'linkcmds'. */ |
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| 32 | /* |
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| 33 | * Size of heap if it is 0 it will be dynamically defined by memory size, |
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| 34 | * otherwise the value should be changed by binary patch |
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| 35 | */ |
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| 36 | rtems_unsigned32 _heap_size = 0; |
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| 37 | |
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| 38 | /* Size of stack used during initialization. Defined in 'start.s'. */ |
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| 39 | extern rtems_unsigned32 _stack_size; |
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| 40 | |
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| 41 | rtems_unsigned32 rtemsFreeMemStart; |
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| 42 | /* Address of start of free memory - should be updated |
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| 43 | after creating new partitions or regions. */ |
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| 44 | |
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| 45 | /* The original BSP configuration table from the application and our copy of it |
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| 46 | with some changes. */ |
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| 47 | |
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| 48 | extern rtems_configuration_table Configuration; |
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| 49 | rtems_configuration_table BSP_Configuration; |
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| 50 | |
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| 51 | rtems_cpu_table Cpu_table; /* CPU configuration table. */ |
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| 52 | char *rtems_progname; /* Program name - from main(). */ |
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| 53 | |
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| 54 | /*-------------------------------------------------------------------------+ |
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| 55 | | External Prototypes |
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| 56 | +--------------------------------------------------------------------------*/ |
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| 57 | extern void rtems_irq_mngt_init(void); |
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| 58 | void bsp_libc_init( void *, unsigned32, int ); |
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| 59 | void bsp_postdriver_hook(void); |
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| 60 | |
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| 61 | /*-------------------------------------------------------------------------+ |
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| 62 | | Function: bsp_pretasking_hook |
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| 63 | | Description: BSP pretasking hook. Called just before drivers are |
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| 64 | | initialized. Used to setup libc and install any BSP |
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| 65 | | extensions. NOTE: Must not use libc (to do io) from here, |
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| 66 | | since drivers are not yet initialized. |
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| 67 | | Global Variables: None. |
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| 68 | | Arguments: None. |
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| 69 | | Returns: Nothing. |
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| 70 | +--------------------------------------------------------------------------*/ |
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| 71 | void bsp_pretasking_hook(void) |
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| 72 | { |
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| 73 | |
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| 74 | if(_heap_size == 0) |
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| 75 | { |
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| 76 | _heap_size = 0x420000 - rtemsFreeMemStart; |
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| 77 | } |
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| 78 | |
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| 79 | bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0); |
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| 80 | |
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| 81 | rtemsFreeMemStart += _heap_size; /* HEAP_SIZE in KBytes */ |
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| 82 | |
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| 83 | |
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| 84 | #ifdef RTEMS_DEBUG |
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| 85 | |
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| 86 | rtems_debug_enable(RTEMS_DEBUG_ALL_MASK); |
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| 87 | |
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| 88 | #endif /* RTEMS_DEBUG */ |
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| 89 | |
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| 90 | } /* bsp_pretasking_hook */ |
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| 91 | |
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| 92 | |
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| 93 | /*-------------------------------------------------------------------------+ |
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| 94 | | Function: bsp_start |
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| 95 | | Description: Called before main is invoked. |
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| 96 | | Global Variables: None. |
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| 97 | | Arguments: None. |
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| 98 | | Returns: Nothing. |
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| 99 | +--------------------------------------------------------------------------*/ |
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| 100 | void bsp_start_default( void ) |
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| 101 | { |
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| 102 | rtemsFreeMemStart = (rtems_unsigned32)(&_end); /* &_end+_stack_size;*/ |
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| 103 | /* set the value of start of free memory. */ |
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| 104 | |
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| 105 | /* If we don't have command line arguments set default program name. */ |
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| 106 | |
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| 107 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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| 108 | Cpu_table.predriver_hook = NULL; /* use system's */ |
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| 109 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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| 110 | Cpu_table.idle_task = NULL; |
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| 111 | /* do not override system IDLE task */ |
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| 112 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 113 | Cpu_table.interrupt_stack_size = 4096; |
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| 114 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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| 115 | |
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| 116 | /* Place RTEMS workspace at beginning of free memory. */ |
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| 117 | BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart; |
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| 118 | |
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| 119 | rtemsFreeMemStart += BSP_Configuration.work_space_size; |
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| 120 | |
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| 121 | /* |
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| 122 | * Init rtems exceptions management |
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| 123 | */ |
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| 124 | rtems_exception_init_mngt(); |
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| 125 | |
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| 126 | /* |
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| 127 | * Init rtems interrupt management |
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| 128 | */ |
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| 129 | rtems_irq_mngt_init(); |
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| 130 | |
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| 131 | /* |
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| 132 | * The following information is very useful when debugging. |
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| 133 | */ |
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| 134 | |
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| 135 | #if 0 |
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| 136 | printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); |
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| 137 | printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions ); |
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| 138 | printk( "microseconds_per_tick = 0x%x\n", |
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| 139 | BSP_Configuration.microseconds_per_tick ); |
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| 140 | printk( "ticks_per_timeslice = 0x%x\n", |
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| 141 | BSP_Configuration.ticks_per_timeslice ); |
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| 142 | printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices ); |
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| 143 | printk( "number_of_device_drivers = 0x%x\n", |
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| 144 | BSP_Configuration.number_of_device_drivers ); |
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| 145 | printk( "Device_driver_table = 0x%x\n", |
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| 146 | BSP_Configuration.Device_driver_table ); |
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| 147 | |
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| 148 | printk( "_heap_size = 0x%x\n", _heap_size ); |
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| 149 | /* printk( "_stack_size = 0x%x\n", _stack_size );*/ |
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| 150 | printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart ); |
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| 151 | printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start ); |
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| 152 | printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size ); |
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| 153 | #endif |
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| 154 | |
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| 155 | } /* bsp_start */ |
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| 156 | |
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| 157 | /* |
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| 158 | * By making this a weak alias for bsp_start_default, a brave soul |
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| 159 | * can override the actual bsp_start routine used. |
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| 160 | */ |
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| 161 | |
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| 162 | void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default"))); |
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