1 | /* |
---|
2 | * This routine starts the application. It includes application, |
---|
3 | * board, and monitor specific initialization and configuration. |
---|
4 | * The generic CPU dependent initialization has been performed |
---|
5 | * before this routine is invoked. |
---|
6 | * |
---|
7 | * COPYRIGHT (c) 1989-1999. |
---|
8 | * On-Line Applications Research Corporation (OAR). |
---|
9 | * |
---|
10 | * The license and distribution terms for this file may be |
---|
11 | * found in the file LICENSE in this distribution or at |
---|
12 | * http://www.rtems.com/license/LICENSE. |
---|
13 | * |
---|
14 | * MVME147 port for TNI - Telecom Bretagne |
---|
15 | * by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr) |
---|
16 | * May 1996 |
---|
17 | * |
---|
18 | * $Id$ |
---|
19 | */ |
---|
20 | |
---|
21 | #include <string.h> |
---|
22 | |
---|
23 | #include <bsp.h> |
---|
24 | #include <rtems/libio.h> |
---|
25 | #include <rtems/libcsupport.h> |
---|
26 | |
---|
27 | /* |
---|
28 | * The original table from the application and our copy of it with |
---|
29 | * some changes. |
---|
30 | */ |
---|
31 | |
---|
32 | extern rtems_configuration_table Configuration; |
---|
33 | rtems_configuration_table BSP_Configuration; |
---|
34 | |
---|
35 | rtems_cpu_table Cpu_table; |
---|
36 | |
---|
37 | char *rtems_progname; |
---|
38 | |
---|
39 | /* |
---|
40 | * Use the shared implementations of the following routines |
---|
41 | */ |
---|
42 | |
---|
43 | void bsp_postdriver_hook(void); |
---|
44 | void bsp_libc_init( void *, unsigned32, int ); |
---|
45 | void bsp_pretasking_hook(void); /* m68k version */ |
---|
46 | |
---|
47 | /* |
---|
48 | * bsp_start |
---|
49 | * |
---|
50 | * This routine does the bulk of the system initialization. |
---|
51 | */ |
---|
52 | |
---|
53 | void bsp_start( void ) |
---|
54 | { |
---|
55 | m68k_isr_entry *monitors_vector_table; |
---|
56 | int index; |
---|
57 | rtems_unsigned8 node_number; |
---|
58 | extern void *_WorkspaceBase; |
---|
59 | extern void *_RamSize; |
---|
60 | extern unsigned long _M68k_Ramsize; |
---|
61 | |
---|
62 | _M68k_Ramsize = (unsigned long)&_RamSize; /* RAM size set in linker script */ |
---|
63 | |
---|
64 | monitors_vector_table = (m68k_isr_entry *)0; /* 147Bug Vectors are at 0 */ |
---|
65 | m68k_set_vbr( monitors_vector_table ); |
---|
66 | |
---|
67 | for ( index=2 ; index<=255 ; index++ ) |
---|
68 | M68Kvec[ index ] = monitors_vector_table[ 32 ]; |
---|
69 | |
---|
70 | M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ |
---|
71 | M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ |
---|
72 | M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ |
---|
73 | M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */ |
---|
74 | |
---|
75 | m68k_set_vbr( &M68Kvec ); |
---|
76 | |
---|
77 | pcc->int_base_vector = PCC_BASE_VECTOR & 0xF0; |
---|
78 | /* Set the PCC int vectors base */ |
---|
79 | |
---|
80 | /* VME shared memory configuration */ |
---|
81 | /* Only the first node shares its top 128k DRAM */ |
---|
82 | |
---|
83 | vme_lcsr->utility_interrupt_vector = VME_BASE_VECTOR & 0xF8; |
---|
84 | /* Set VMEchip base interrupt vector */ |
---|
85 | vme_lcsr->utility_interrupt_mask |= 0x02; |
---|
86 | /* Enable SIGLP interruption (see shm support) */ |
---|
87 | pcc->general_purpose_control &= 0x10; |
---|
88 | /* Enable VME master interruptions */ |
---|
89 | |
---|
90 | if (vme_lcsr->system_controller & 0x01) { |
---|
91 | /* the board is system controller */ |
---|
92 | vme_lcsr->system_controller = 0x08; |
---|
93 | /* Make VME access round-robin */ |
---|
94 | } |
---|
95 | |
---|
96 | |
---|
97 | node_number = |
---|
98 | (rtems_unsigned8) |
---|
99 | (Configuration.User_multiprocessing_table->node - 1) & 0xF; |
---|
100 | /* Get and store node ID, first node_number = 0 */ |
---|
101 | vme_gcsr->board_identification = node_number; |
---|
102 | |
---|
103 | vme_lcsr->gcsr_base_address = node_number; |
---|
104 | /* Setup the base address of this board's gcsr */ |
---|
105 | vme_lcsr->timer_configuration = 0x6a; |
---|
106 | /* Enable VME time outs, maximum periods */ |
---|
107 | |
---|
108 | if (node_number == 0) { |
---|
109 | pcc->slave_base_address = 0x01; |
---|
110 | /* Set local DRAM base address on the VME bus to the DRAM size */ |
---|
111 | |
---|
112 | vme_lcsr->vme_bus_requester = 0x80; |
---|
113 | while (! (vme_lcsr->vme_bus_requester & 0x40)); |
---|
114 | /* Get VMEbus mastership */ |
---|
115 | vme_lcsr->slave_address_modifier = 0xfb; |
---|
116 | /* Share everything */ |
---|
117 | vme_lcsr->slave_configuration = 0x80; |
---|
118 | /* Share local DRAM */ |
---|
119 | vme_lcsr->vme_bus_requester = 0x0; |
---|
120 | /* release bus */ |
---|
121 | } else { |
---|
122 | pcc->slave_base_address = 0; |
---|
123 | /* Set local DRAM base address on the VME bus to 0 */ |
---|
124 | |
---|
125 | vme_lcsr->vme_bus_requester = 0x80; |
---|
126 | while (! (vme_lcsr->vme_bus_requester & 0x40)); |
---|
127 | /* Get VMEbus mastership */ |
---|
128 | vme_lcsr->slave_address_modifier = 0x08; |
---|
129 | /* Share only the short adress range */ |
---|
130 | vme_lcsr->slave_configuration = 0; |
---|
131 | /* Don't share local DRAM */ |
---|
132 | vme_lcsr->vme_bus_requester = 0x0; |
---|
133 | /* release bus */ |
---|
134 | } |
---|
135 | |
---|
136 | vme_lcsr->master_address_modifier = 0; |
---|
137 | /* Automatically set the address modifier */ |
---|
138 | vme_lcsr->master_configuration = 1; |
---|
139 | /* Disable D32 transfers : they don't work on my VMEbus rack */ |
---|
140 | |
---|
141 | rtems_cache_enable_instruction(); |
---|
142 | rtems_cache_enable_data(); |
---|
143 | |
---|
144 | /* |
---|
145 | * we only use a hook to get the C library initialized. |
---|
146 | */ |
---|
147 | |
---|
148 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
---|
149 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
---|
150 | Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec; |
---|
151 | Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; |
---|
152 | |
---|
153 | BSP_Configuration.work_space_start = (void *) &_WorkspaceBase; |
---|
154 | } |
---|