1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/**
* @file
* @ingroup RTEMSBSPsSPARCLEON2
* @brief LEON2 Cache Snooping Support
*/
/*
* LEON2 Cache Snooping Support
*
* COPYRIGHT (c) 2011
* Aeroflex Gaisler
*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*/
#include <bsp.h>
#include <bsp/bootcard.h>
#include <rtems/sysinit.h>
/*
* Tells us if data cache snooping is available
*/
int CPU_SPARC_HAS_SNOOPING;
/*
* set_snooping
*
* Read the data cache configuration register to determine if
* bus snooping is available. This is needed for some drivers so
* that they can select the most efficient copy routines.
*/
static inline int set_snooping(void)
{
unsigned int tmp = *(unsigned int *)0x80000014; /* Cache control register */
return ((tmp>>23) & 1); /* Data cache snooping enabled */
}
void bsp_start( void )
{
CPU_SPARC_HAS_SNOOPING = set_snooping();
}
/* If RTEMS_DRVMGR_STARTUP is defined extra code is added that
* registers the LEON2 AMBA bus driver as root driver into the
* driver manager.
*
* The structues here are declared weak so that the user can override
* the configuration and add custom cores in the RTEMS project.
*/
#ifdef RTEMS_DRVMGR_STARTUP
#include <drvmgr/drvmgr.h>
#include <drvmgr/leon2_amba_bus.h>
/* All drivers included by BSP, this is overridden by the user by including
* the devmgr_confdefs.h. No specifc drivers needed by BSP since IRQ/TIMER/UART
* is not drvmgr drivers.
*/
drvmgr_drv_reg_func drvmgr_drivers[] __attribute__((weak)) =
{
NULL /* End array with NULL */
};
/* Defines what cores are avilable on the bus in addition to the standard
* LEON2 peripherals.
*/
struct leon2_core leon2_amba_custom_cores[] __attribute__((weak)) =
{
EMPTY_LEON2_CORE
};
/* Configure LEON2 Root bus driver */
struct leon2_bus leon2_bus_config __attribute__((weak)) =
{
&leon2_std_cores[0], /* The standard cores, defined by driver */
&leon2_amba_custom_cores[0], /* custom cores, defined by us */
DRVMGR_TRANSLATE_ONE2ONE,
DRVMGR_TRANSLATE_ONE2ONE,
};
/* Driver resources on LEON2 AMBA bus. Used to set options for particular
* LEON2 cores, it is up to the driver to look at the configuration paramters
* once started.
*/
struct drvmgr_bus_res leon2_amba_res __attribute__((weak)) =
{
.next = NULL,
.resource = {
DRVMGR_RES_EMPTY
},
};
#endif /* RTEMS_DRVMGR_STARTUP */
/*
* Called just before drivers are initialized. Is used to initialize shared
* interrupt handling.
*/
static void leon2_pre_driver_hook( void )
{
/* Initialize shared interrupt handling, must be done after IRQ
* controller has been found and initialized.
*/
bsp_interrupt_initialize();
#ifdef RTEMS_DRVMGR_STARTUP
leon2_root_register(&leon2_bus_config, &leon2_amba_res);
#endif
}
RTEMS_SYSINIT_ITEM(
leon2_pre_driver_hook,
RTEMS_SYSINIT_BSP_PRE_DRIVERS,
RTEMS_SYSINIT_ORDER_MIDDLE
);
|