2 * Creation Date: <2004/08/28 18:38:22 greg>
3 * Time-stamp: <2004/08/28 18:38:22 greg>
7 * Misc device node methods
9 * Copyright (C) 2004 Greg Watson
11 * Based on MOL specific code which is
13 * Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se)
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
22 #include "libopenbios/bindings.h"
23 #include "libc/string.h"
24 #include "briq/briq.h"
25 #include "libopenbios/ofmem.h"
27 /************************************************************************/
28 /* RTAS (run-time abstraction services) */
29 /************************************************************************/
32 DECLARE_NODE( rtas, INSTALL_OPEN, 0, "+/rtas" );
34 /* ( physbase -- rtas_callback ) */
36 rtas_instantiate( void )
39 int s=0x1000, size = (int)of_rtas_end - (int)of_rtas_start;
44 virt = ofmem_claim_virt( 0, s, 0x1000 );
45 ofmem_map( physbase, virt, s, -1 );
46 memcpy( (char*)virt, of_rtas_start, size );
48 printk("RTAS instantiated at %08x\n", physbase );
49 flush_icache_range( (char*)virt, (char*)virt + size );
54 NODE_METHODS( rtas ) = {
55 { "instantiate", rtas_instantiate },
56 { "instantiate-rtas", rtas_instantiate },
61 /************************************************************************/
63 /************************************************************************/
65 DECLARE_NODE( vfd_stdout, INSTALL_OPEN, 0, "Tdisplay" );
67 /* ( addr len -- actual ) */
72 char *addr = (char*)POP();
73 char *s = malloc( len + 1 );
75 strncpy_nopad( s, addr, len );
85 NODE_METHODS( vfd_stdout ) = {
86 { "write", stdout_write },
90 /************************************************************************/
92 /************************************************************************/
94 DECLARE_NODE( tty, INSTALL_OPEN, 0, "/packages/terminal-emulator" );
96 /* ( addr len -- actual ) */
101 char *p = (char*)POP();
116 /* ( addr len -- actual ) */
121 char *p = (char*)POP();
122 for( i=0; i<len; i++ )
127 NODE_METHODS( tty ) = {
128 { "read", tty_read },
129 { "write", tty_write },
132 /************************************************************************/
133 /* client interface 'quiesce' */
134 /************************************************************************/
136 DECLARE_NODE( ciface, 0, 0, "/packages/client-iface" );
140 ciface_quiesce( unsigned long args[], unsigned long ret[] )
144 /* This seems to be the correct thing to do - but I'm not sure */
145 asm volatile("mfmsr %0" : "=r" (msr) : );
146 msr &= ~(MSR_IR | MSR_DR);
147 asm volatile("mtmsr %0" :: "r" (msr) );
149 printk("=============================================================\n\n");
154 ciface_milliseconds( unsigned long args[], unsigned long ret[] )
156 extern unsigned long get_timer_freq();
157 static unsigned long mticks=0, usecs=0;
160 asm volatile("mftb %0" : "=r" (t) : );
162 usecs += get_timer_freq() / 1000000 * ( t-mticks );
169 NODE_METHODS( ciface ) = {
170 { "quiesce", ciface_quiesce },
171 { "milliseconds", ciface_milliseconds },
175 /************************************************************************/
176 /* MMU/memory methods */
177 /************************************************************************/
179 DECLARE_NODE( memory, INSTALL_OPEN, 0, "/memory" );
180 DECLARE_NODE( mmu, INSTALL_OPEN, 0, "/cpu@0" );
181 DECLARE_NODE( mmu_ciface, 0, 0, "/packages/client-iface" );
184 /* ( phys size align --- base ) */
191 int ret = ofmem_claim_phys( phys, size, align );
194 printk("MEM: claim failure\n");
201 /* ( phys size --- ) */
208 /* ( phys size align --- base ) */
215 int ret = ofmem_claim_virt( phys, size, align );
218 printk("MMU: CLAIM failure\n");
225 /* ( phys size --- ) */
232 /* ( phys virt size mode -- [ret???] ) */
242 /* printk("mmu_map: %x %x %x %x\n", phys, virt, size, mode ); */
243 ret = ofmem_map( phys, virt, size, mode );
246 printk("MMU: map failure\n");
252 /* ( virt size -- ) */
259 /* ( virt -- false | phys mode true ) */
261 mmu_translate( void )
265 ucell phys = ofmem_translate( virt, &mode );
276 /* ( virt size align -- baseaddr|-1 ) */
283 int ret = ofmem_claim( virt, size, align );
285 /* printk("ciface_claim: %08x %08x %x\n", virt, size, align ); */
289 /* ( virt size -- ) */
291 ciface_release( void )
298 NODE_METHODS( memory ) = {
299 { "claim", mem_claim },
300 { "release", mem_release },
303 NODE_METHODS( mmu ) = {
304 { "claim", mmu_claim },
305 { "release", mmu_release },
307 { "unmap", mmu_unmap },
308 { "translate", mmu_translate },
311 NODE_METHODS( mmu_ciface ) = {
312 { "cif-claim", ciface_claim },
313 { "cif-release", ciface_release },
317 /************************************************************************/
319 /************************************************************************/
322 node_methods_init( void )
325 REGISTER_NODE( rtas );
327 REGISTER_NODE( vfd_stdout );
328 REGISTER_NODE( ciface );
329 REGISTER_NODE( memory );
330 REGISTER_NODE( mmu );
331 REGISTER_NODE( mmu_ciface );
332 REGISTER_NODE( tty );