/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */ /*- * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (C) 2000 Benno Rice. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include "ofw_if.h" MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties"); static ihandle_t stdout; static ofw_def_t *ofw_def_impl; static ofw_t ofw_obj; static struct ofw_kobj ofw_kernel_obj; static struct kobj_ops ofw_kernel_kops; /* * OFW install routines. Highest priority wins, equal priority also * overrides allowing last-set to win. */ SET_DECLARE(ofw_set, ofw_def_t); boolean_t OF_install(char *name, int prio) { ofw_def_t **ofwpp, *ofwp; static int curr_prio = 0; /* * Try and locate the OFW kobj corresponding to the name */ SET_FOREACH(ofwpp, ofw_set) { ofwp = *ofwpp; if (ofwp->name && !strcmp(ofwp->name, name) && prio >= curr_prio) { curr_prio = prio; ofw_def_impl = ofwp; return (TRUE); } } return (FALSE); } /* Initialiser */ void OF_init(void *cookie) { phandle_t chosen; ofw_obj = &ofw_kernel_obj; /* * Take care of compiling the selected class, and * then statically initialize the OFW object */ kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops); kobj_init((kobj_t)ofw_obj, ofw_def_impl); OFW_INIT(ofw_obj, cookie); if ((chosen = OF_finddevice("/chosen")) == -1) OF_exit(); if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1) stdout = -1; } void OF_printf(const char *fmt, ...) { va_list va; char buf[1024]; va_start(va, fmt); vsprintf(buf, fmt, va); OF_write(stdout, buf, strlen(buf)); va_end(va); } /* * Generic functions */ /* Test to see if a service exists. */ int OF_test(const char *name) { return (OFW_TEST(ofw_obj, name)); } int OF_interpret(const char *cmd, int nreturns, ...) { va_list ap; unsigned long slots[16]; int i = 0; int status; status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots); if (status == -1) return (status); va_start(ap, nreturns); while (i < nreturns) *va_arg(ap, cell_t *) = slots[i++]; va_end(ap); return (status); } /* * Device tree functions */ /* Return the next sibling of this node or 0. */ phandle_t OF_peer(phandle_t node) { return (OFW_PEER(ofw_obj, node)); } /* Return the first child of this node or 0. */ phandle_t OF_child(phandle_t node) { return (OFW_CHILD(ofw_obj, node)); } /* Return the parent of this node or 0. */ phandle_t OF_parent(phandle_t node) { return (OFW_PARENT(ofw_obj, node)); } /* Return the package handle that corresponds to an instance handle. */ phandle_t OF_instance_to_package(ihandle_t instance) { return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance)); } /* Get the length of a property of a package. */ ssize_t OF_getproplen(phandle_t package, const char *propname) { return (OFW_GETPROPLEN(ofw_obj, package, propname)); } /* Get the value of a property of a package. */ ssize_t OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen) { return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen)); } /* * Resursively search the node and its parent for the given property, working * downward from the node to the device tree root. Returns the value of the * first match. */ ssize_t OF_searchprop(phandle_t node, char *propname, void *buf, size_t len) { ssize_t rv; for (; node != 0; node = OF_parent(node)) { if ((rv = OF_getprop(node, propname, buf, len)) != -1) return (rv); } return (-1); } /* * Store the value of a property of a package into newly allocated memory * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a * single element, the number of elements is return in number. */ ssize_t OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf) { int len; *buf = NULL; if ((len = OF_getproplen(package, propname)) == -1 || len % elsz != 0) return (-1); *buf = malloc(len, M_OFWPROP, M_WAITOK); if (OF_getprop(package, propname, *buf, len) == -1) { free(*buf, M_OFWPROP); *buf = NULL; return (-1); } return (len / elsz); } /* Get the next property of a package. */ int OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size) { return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size)); } /* Set the value of a property of a package. */ int OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len) { return (OFW_SETPROP(ofw_obj, package, propname, buf,len)); } /* Convert a device specifier to a fully qualified pathname. */ ssize_t OF_canon(const char *device, char *buf, size_t len) { return (OFW_CANON(ofw_obj, device, buf, len)); } /* Return a package handle for the specified device. */ phandle_t OF_finddevice(const char *device) { return (OFW_FINDDEVICE(ofw_obj, device)); } /* Return the fully qualified pathname corresponding to an instance. */ ssize_t OF_instance_to_path(ihandle_t instance, char *buf, size_t len) { return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len)); } /* Return the fully qualified pathname corresponding to a package. */ ssize_t OF_package_to_path(phandle_t package, char *buf, size_t len) { return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len)); } /* Call the method in the scope of a given instance. */ int OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns, ...) { va_list ap; unsigned long args_n_results[12]; int n, status; if (nargs > 6) return (-1); va_start(ap, nreturns); for (n = 0; n < nargs; n++) args_n_results[n] = va_arg(ap, unsigned long); status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns, args_n_results); if (status != 0) return (status); for (; n < nargs + nreturns; n++) *va_arg(ap, unsigned long *) = args_n_results[n]; va_end(ap); return (0); } /* * Device I/O functions */ /* Open an instance for a device. */ ihandle_t OF_open(const char *device) { return (OFW_OPEN(ofw_obj, device)); } /* Close an instance. */ void OF_close(ihandle_t instance) { OFW_CLOSE(ofw_obj, instance); } /* Read from an instance. */ ssize_t OF_read(ihandle_t instance, void *addr, size_t len) { return (OFW_READ(ofw_obj, instance, addr, len)); } /* Write to an instance. */ ssize_t OF_write(ihandle_t instance, const void *addr, size_t len) { return (OFW_WRITE(ofw_obj, instance, addr, len)); } /* Seek to a position. */ int OF_seek(ihandle_t instance, uint64_t pos) { return (OFW_SEEK(ofw_obj, instance, pos)); } /* * Memory functions */ /* Claim an area of memory. */ void * OF_claim(void *virt, size_t size, u_int align) { return (OFW_CLAIM(ofw_obj, virt, size, align)); } /* Release an area of memory. */ void OF_release(void *virt, size_t size) { OFW_RELEASE(ofw_obj, virt, size); } /* * Control transfer functions */ /* Suspend and drop back to the Open Firmware interface. */ void OF_enter() { OFW_ENTER(ofw_obj); } /* Shut down and drop back to the Open Firmware interface. */ void OF_exit() { /* Should not return */ OFW_EXIT(ofw_obj); for (;;) /* just in case */ ; }