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* Creation Date: <2004/08/28 18:38:22 greg>
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* Time-stamp: <2004/08/28 18:38:22 greg>
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* Misc device node methods
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* Copyright (C) 2004 Greg Watson
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* Based on MOL specific code which is
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* Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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#include "libopenbios/bindings.h"
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#include "libc/string.h"
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#include "briq/briq.h"
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#include "libopenbios/ofmem.h"
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/************************************************************************/
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/* RTAS (run-time abstraction services) */
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/************************************************************************/
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DECLARE_NODE( rtas, INSTALL_OPEN, 0, "+/rtas" );
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/* ( physbase -- rtas_callback ) */
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rtas_instantiate( void )
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int s=0x1000, size = (int)of_rtas_end - (int)of_rtas_start;
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virt = ofmem_claim_virt( 0, s, 0x1000 );
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ofmem_map( physbase, virt, s, -1 );
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memcpy( (char*)virt, of_rtas_start, size );
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printk("RTAS instantiated at %08x\n", physbase );
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flush_icache_range( (char*)virt, (char*)virt + size );
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NODE_METHODS( rtas ) = {
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{ "instantiate", rtas_instantiate },
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{ "instantiate-rtas", rtas_instantiate },
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/************************************************************************/
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/************************************************************************/
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DECLARE_NODE( vfd_stdout, INSTALL_OPEN, 0, "Tdisplay" );
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/* ( addr len -- actual ) */
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char *addr = (char*)POP();
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char *s = malloc( len + 1 );
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strncpy_nopad( s, addr, len );
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NODE_METHODS( vfd_stdout ) = {
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{ "write", stdout_write },
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/************************************************************************/
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/************************************************************************/
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DECLARE_NODE( tty, INSTALL_OPEN, 0, "/packages/terminal-emulator" );
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/* ( addr len -- actual ) */
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char *p = (char*)POP();
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/* ( addr len -- actual ) */
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char *p = (char*)POP();
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for( i=0; i<len; i++ )
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NODE_METHODS( tty ) = {
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{ "read", tty_read },
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{ "write", tty_write },
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/************************************************************************/
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/* client interface 'quiesce' */
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/************************************************************************/
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DECLARE_NODE( ciface, 0, 0, "/packages/client-iface" );
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ciface_quiesce( unsigned long args[], unsigned long ret[] )
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/* This seems to be the correct thing to do - but I'm not sure */
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asm volatile("mfmsr %0" : "=r" (msr) : );
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msr &= ~(MSR_IR | MSR_DR);
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asm volatile("mtmsr %0" :: "r" (msr) );
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printk("=============================================================\n\n");
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ciface_milliseconds( unsigned long args[], unsigned long ret[] )
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extern unsigned long get_timer_freq();
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static unsigned long mticks=0, usecs=0;
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asm volatile("mftb %0" : "=r" (t) : );
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usecs += get_timer_freq() / 1000000 * ( t-mticks );
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NODE_METHODS( ciface ) = {
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{ "quiesce", ciface_quiesce },
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{ "milliseconds", ciface_milliseconds },
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/************************************************************************/
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/* MMU/memory methods */
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/************************************************************************/
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DECLARE_NODE( memory, INSTALL_OPEN, 0, "/memory" );
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DECLARE_NODE( mmu, INSTALL_OPEN, 0, "/cpu@0" );
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DECLARE_NODE( mmu_ciface, 0, 0, "/packages/client-iface" );
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/* ( phys size align --- base ) */
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int ret = ofmem_claim_phys( phys, size, align );
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printk("MEM: claim failure\n");
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/* ( phys size --- ) */
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/* ( phys size align --- base ) */
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int ret = ofmem_claim_virt( phys, size, align );
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printk("MMU: CLAIM failure\n");
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/* ( phys size --- ) */
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/* ( phys virt size mode -- [ret???] ) */
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/* printk("mmu_map: %x %x %x %x\n", phys, virt, size, mode ); */
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ret = ofmem_map( phys, virt, size, mode );
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printk("MMU: map failure\n");
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/* ( virt size -- ) */
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/* ( virt -- false | phys mode true ) */
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mmu_translate( void )
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ucell phys = ofmem_translate( virt, &mode );
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/* ( virt size align -- baseaddr|-1 ) */
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int ret = ofmem_claim( virt, size, align );
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/* printk("ciface_claim: %08x %08x %x\n", virt, size, align ); */
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/* ( virt size -- ) */
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ciface_release( void )
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NODE_METHODS( memory ) = {
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{ "claim", mem_claim },
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{ "release", mem_release },
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NODE_METHODS( mmu ) = {
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{ "claim", mmu_claim },
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{ "release", mmu_release },
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{ "unmap", mmu_unmap },
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{ "translate", mmu_translate },
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NODE_METHODS( mmu_ciface ) = {
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{ "cif-claim", ciface_claim },
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{ "cif-release", ciface_release },
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/************************************************************************/
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/************************************************************************/
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node_methods_init( void )
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REGISTER_NODE( rtas );
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REGISTER_NODE( vfd_stdout );
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REGISTER_NODE( ciface );
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REGISTER_NODE( memory );
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REGISTER_NODE( mmu );
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REGISTER_NODE( mmu_ciface );
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REGISTER_NODE( tty );