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/* Miscellaneous small BSP routines; reboot, board CSR, ... */
/*
* Authorship
* ----------
* This software ('mvme3100' RTEMS BSP) was created by
*
* Till Straumann <strauman@slac.stanford.edu>, 2005-2007,
* Stanford Linear Accelerator Center, Stanford University.
*
* Acknowledgement of sponsorship
* ------------------------------
* The 'mvme3100' BSP was produced by
* the Stanford Linear Accelerator Center, Stanford University,
* under Contract DE-AC03-76SFO0515 with the Department of Energy.
*
* Government disclaimer of liability
* ----------------------------------
* Neither the United States nor the United States Department of Energy,
* nor any of their employees, makes any warranty, express or implied, or
* assumes any legal liability or responsibility for the accuracy,
* completeness, or usefulness of any data, apparatus, product, or process
* disclosed, or represents that its use would not infringe privately owned
* rights.
*
* Stanford disclaimer of liability
* --------------------------------
* Stanford University makes no representations or warranties, express or
* implied, nor assumes any liability for the use of this software.
*
* Stanford disclaimer of copyright
* --------------------------------
* Stanford University, owner of the copyright, hereby disclaims its
* copyright and all other rights in this software. Hence, anyone may
* freely use it for any purpose without restriction.
*
* Maintenance of notices
* ----------------------
* In the interest of clarity regarding the origin and status of this
* SLAC software, this and all the preceding Stanford University notices
* are to remain affixed to any copy or derivative of this software made
* or distributed by the recipient and are to be affixed to any copy of
* software made or distributed by the recipient that contains a copy or
* derivative of this software.
*
* ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
*/
#include <rtems.h>
#include <bsp.h>
void
bsp_reset(void)
{
uint8_t v;
/*
* AFAIK, the hardest reset available; cleared
* some errors a VME-bus reset wouldn't (hung
* i2c bus)...
*/
v = in_8( BSP_MVME3100_SYS_CR );
v &= ~BSP_MVME3100_SYS_CR_RESET_MSK;
v |= BSP_MVME3100_SYS_CR_RESET;
out_8( BSP_MVME3100_SYS_CR, v );
}
uint8_t
BSP_setSysReg(volatile uint8_t *r, uint8_t mask)
{
uint8_t v;
rtems_interrupt_level l;
if ( !mask )
return in_8( r );
rtems_interrupt_disable(l);
v = in_8( r );
if ( mask ) {
out_8( r, v | mask );
}
rtems_interrupt_enable(l);
return v;
}
uint8_t
BSP_clrSysReg(volatile uint8_t *r, uint8_t mask)
{
uint8_t v;
rtems_interrupt_level l;
if ( !mask )
return in_8( r );
rtems_interrupt_disable(l);
v = in_8( r );
if ( mask ) {
out_8( r, v & ~mask );
}
rtems_interrupt_enable(l);
return v;
}
uint8_t
BSP_setLEDs(uint8_t mask)
{
return BSP_setSysReg( BSP_MVME3100_SYS_IND_REG, mask );
}
uint8_t
BSP_clrLEDs(uint8_t mask)
{
return BSP_clrSysReg( BSP_MVME3100_SYS_IND_REG, mask );
}
uint8_t
BSP_eeprom_write_protect(void)
{
uint8_t m = BSP_MVME3100_SYS_CR_EEPROM_WP;
volatile uint8_t *r = BSP_MVME3100_SYS_CR;
return m & BSP_setSysReg( r, m );
}
uint8_t
BSP_eeprom_write_enable(void)
{
uint8_t m = BSP_MVME3100_SYS_CR_EEPROM_WP;
volatile uint8_t *r = BSP_MVME3100_SYS_CR;
return m & BSP_clrSysReg( r, m );
}
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