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Add 'extended' BSP support (pseudo-VME)

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This commit is contained in:
Eric Norum
2005-02-03 22:52:26 +00:00
parent f8ac4fc795
commit d75023ec7b
4 changed files with 151 additions and 10 deletions
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4
c/src/lib/libbsp/m68k/uC5282/ChangeLog
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@@ -1,3 +1,7 @@
2005-02-03 Eric Norum <norume@aps.anl.gov>
* include/bsp.h, startup/bspstart.c: Add 'extended' BSP support (pseudo-VME)
2005-02-02 Eric Norum <norume@aps.anl.gov>
* network/network.c: Lock FEC/PHYS at 100 Mbs, full-duplex

8
c/src/lib/libbsp/m68k/uC5282/README
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@@ -4,9 +4,10 @@
Description: Arcturus Networks uC DIMM ColdFire 5282
============
CPU: MCF5282, 64MHz
RAM: 16M
ROM: 4M
CPU: MCF5282, 64MHz
RAM: 16M
SRAM: 64k (BSP places FEC buffer descriptors here)
ROM: 4M
This is a credit-card sized board in a DIMM format. It is part of a family
which includes Dragonball and Coldfire CPUs, with a standardized DIMM-based bus.
@@ -15,6 +16,7 @@ ACKNOWLEDGEMENTS:
=================
This BSP is based on the work of:
D. Peter Siddons
Till Straumann
Brett Swimley
Jay Monkman

34
c/src/lib/libbsp/m68k/uC5282/include/bsp.h
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@@ -68,7 +68,7 @@ extern rtems_configuration_table BSP_Configuration;
/* functions */
unsigned32 bsp_get_CPU_clock_speed(void);
int bsp_allocate_interrupt(int level, int priority);
rtems_status_code bsp_allocate_interrupt(int level, int priority);
unsigned const char *uC5282_gethwaddr(int a);
const char *uC5282_getbenv(const char *a);
@@ -98,6 +98,38 @@ m68k_isr_entry set_vector(
#define UART2_IRQ_LEVEL 3
#define UART2_IRQ_PRIORITY 5
/*
* Fake VME support
* This makes it easier to use EPICS driver support on this BSP.
*/
#define VME_AM_STD_SUP_ASCENDING 0x3f
#define VME_AM_STD_SUP_PGM 0x3e
#define VME_AM_STD_USR_ASCENDING 0x3b
#define VME_AM_STD_USR_PGM 0x3a
#define VME_AM_STD_SUP_DATA 0x3d
#define VME_AM_STD_USR_DATA 0x39
#define VME_AM_EXT_SUP_ASCENDING 0x0f
#define VME_AM_EXT_SUP_PGM 0x0e
#define VME_AM_EXT_USR_ASCENDING 0x0b
#define VME_AM_EXT_USR_PGM 0x0a
#define VME_AM_EXT_SUP_DATA 0x0d
#define VME_AM_EXT_USR_DATA 0x09
#define VME_AM_SUP_SHORT_IO 0x2d
#define VME_AM_USR_SHORT_IO 0x29
/*
* 'Extended' BSP support
*/
rtems_status_code bspExtInit(void);
typedef void (*BSP_VME_ISR_t)(void *usrArg, unsigned long vector);
BSP_VME_ISR_t BSP_getVME_isr(unsigned long vector, void **parg);
int BSP_installVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *usrArg);
int BSP_removeVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *usrArg);
int BSP_enableVME_int_lvl(unsigned int level);
int BSP_disableVME_int_lvl(unsigned int level);
int BSP_vme2local_adrs(unsigned am, unsigned long vmeaddr, unsigned long *plocaladdr);
#ifdef __cplusplus
}
#endif

115
c/src/lib/libbsp/m68k/uC5282/startup/bspstart.c
View File

@@ -157,7 +157,7 @@ void _CPU_cache_invalidate_1_data_line(const void *addr)
*/
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, unsigned32, int );
void bsp_pretasking_hook(void); /* m68k version */
void bsp_pretasking_hook(void); /* m68k version */
/*
* bsp_start
@@ -170,7 +170,7 @@ void bsp_start( void )
extern char _RamSize[];
extern unsigned long _M68k_Ramsize;
_M68k_Ramsize = (unsigned long)_RamSize; /* RAM size set in linker script */
_M68k_Ramsize = (unsigned long)_RamSize; /* RAM size set in linker script */
/*
* Allocate the memory for the RTEMS Work Space. This can come from
@@ -255,18 +255,19 @@ unsigned32 bsp_get_CPU_clock_speed(void)
/*
* Interrupt controller allocation
*/
int bsp_allocate_interrupt(int level, int priority)
rtems_status_code
bsp_allocate_interrupt(int level, int priority)
{
static char used[7];
rtems_interrupt_level l;
int ret = -1;
rtems_status_code ret = RTEMS_RESOURCE_IN_USE;
if ((level < 1) || (level > 7) || (priority < 0) || (priority > 7))
return ret;
return RTEMS_INVALID_NUMBER;
rtems_interrupt_disable(l);
if ((used[level-1] & (1 << priority)) == 0) {
used[level-1] |= (1 << priority);
ret = 0;
ret = RTEMS_SUCCESSFUL;
}
rtems_interrupt_enable(l);
return ret;
@@ -301,3 +302,105 @@ type uC5282_##name(d1type d1) \
#define SysCode_setbenv 15 /* get bootloader environment variable */
syscall_1(unsigned const char *, gethwaddr, int, a)
syscall_1(const char *, getbenv, const char *, a)
/*
* 'Extended BSP' routines
* Should move to cpukit/score/cpu/m68k/cpu.c someday.
*/
rtems_status_code bspExtInit(void) { return RTEMS_SUCCESSFUL; }
int BSP_enableVME_int_lvl(unsigned int level) { return 0; }
int BSP_disableVME_int_lvl(unsigned int level) { return 0; }
/*
* VME interrupt support
*/
static struct handlerTab {
BSP_VME_ISR_t func;
void *arg;
} handlerTab[256];
BSP_VME_ISR_t
BSP_getVME_isr(unsigned long vector, void **pusrArg)
{
if (vector > 255)
return (BSP_VME_ISR_t)NULL;
if (pusrArg)
*pusrArg = handlerTab[vector].arg;
return handlerTab[vector].func;
}
static rtems_isr
trampoline (int v)
{
if (*handlerTab[v].func)
(*handlerTab[v].func)(handlerTab[v].arg, (unsigned long)v);
}
int
BSP_installVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *usrArg)
{
rtems_isr_entry old_handler;
if (vector > 255)
return -1;
handlerTab[vector].func = handler;
handlerTab[vector].arg = usrArg;
rtems_interrupt_catch(trampoline, vector, old_handler);
/*
* Find an unused level/priority
*/
if ((vector >= 65) && (vector <= 127)) {
int l, p;
int voffset = vector - 64;
rtems_interrupt_level level;
for (l = 1 ; l < 7 ; l++) {
for (p = 0 ; p < 7 ; p++) {
if (bsp_allocate_interrupt(l,p) == RTEMS_SUCCESSFUL) {
*(&MCF5282_INTC0_ICR1 + (vector - 65)) =
MCF5282_INTC_ICR_IL(l) |
MCF5282_INTC_ICR_IP(p);
rtems_interrupt_disable(level);
if (voffset >= 32)
MCF5282_INTC0_IMRH &= ~(1 << (voffset - 32));
else
MCF5282_INTC0_IMRL &= ~((1 << voffset) |
MCF5282_INTC_IMRL_MASKALL);
rtems_interrupt_enable(level);
return 0;
}
}
}
}
return -1;
}
int
BSP_removeVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *usrArg)
{
if (vector > 255)
return -1;
if ((handlerTab[vector].func != handler)
|| (handlerTab[vector].arg != usrArg))
return -1;
handlerTab[vector].func = (BSP_VME_ISR_t)NULL;
return 0;
}
int
BSP_vme2local_adrs(unsigned am, unsigned long vmeaddr, unsigned long *plocaladdr)
{
unsigned long offset;
switch (am) {
default: return -1;
case VME_AM_SUP_SHORT_IO: offset = 0x31000000; break; /* A16/D16 */
case VME_AM_STD_SUP_DATA: offset = 0x30000000; break; /* A24/D16 */
case VME_AM_EXT_SUP_DATA: return -1; /* A32/D32 */
}
*plocaladdr = vmeaddr + offset;
return 0;
}