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// $Id: ppc405_init.c,v 1.1.1.1 2013/12/11 21:03:26 bcbrock Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ssx/ppc405/ppc405_init.c,v $
//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2013
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file ppc405_init.c
/// \brief PPC405 initialization routines
///
/// The entry points in this file are routines that are typically used during
/// initialization, and their code space could be deallocated and recovered if
/// no longer needed by the application after initialization.
#include "ssx.h"
// Note that __ppc405_system_setup() is called from the SSX bootloader early
// in the initialization, at a point before the aplication has enabled
// critical or external interruts.
void
__ppc405_system_setup()
{
SsxIrqId irq;
// Initialize the interrupt vectors.
for (irq = 0; irq < PPC405_IRQS; irq++) {
__ppc405_irq_handlers[irq].handler = __ppc405_default_irq_handler;
__ppc405_irq_handlers[irq].arg = 0;
}
__ppc405_phantom_irq.handler = __ppc405_phantom_irq_handler;
__ppc405_phantom_irq.arg = 0;
// Initialize special interrupt handlers
__ppc405_fit_routine = __ppc405_default_irq_handler;
__ppc405_fit_arg = 0;
__ppc405_watchdog_routine = __ppc405_default_irq_handler;
__ppc405_watchdog_arg = 0;
__ppc405_debug_routine = __ppc405_default_irq_handler;
__ppc405_debug_arg = 0;
// Enable the PIT interrupt, but not auto-reload mode. Clear the status
// of all timers for good measure.
andc_spr(SPRN_TCR, TCR_ARE);
or_spr(SPRN_TCR, TCR_PIE);
or_spr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_PIS | TSR_FIS);
// Call system-specific setup
#ifdef CHIP_PGP
void __pgp_setup();
__pgp_setup();
#endif
}
// Set the timebase using the PowerPC protocol.
void
__ssx_timebase_set(SsxTimebase t)
{
Uint64 tb;
tb.value = t;
mttbl(0);
mttbu(tb.word[0]);
mttbl(tb.word[1]);
}
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