003 File Manager
Current Path:
/usr/src/sys/dev/ofw
usr
/
src
/
sys
/
dev
/
ofw
/
📁
..
📄
ofw_bus.h
(2.38 KB)
📄
ofw_bus_if.m
(5.32 KB)
📄
ofw_bus_subr.c
(24.04 KB)
📄
ofw_bus_subr.h
(5.64 KB)
📄
ofw_console.c
(4.92 KB)
📄
ofw_cpu.c
(10.56 KB)
📄
ofw_cpu.h
(1.67 KB)
📄
ofw_disk.c
(4.95 KB)
📄
ofw_fdt.c
(12.09 KB)
📄
ofw_graph.c
(4.68 KB)
📄
ofw_graph.h
(1.93 KB)
📄
ofw_if.m
(6.74 KB)
📄
ofw_pci.h
(3.57 KB)
📄
ofw_standard.c
(16.62 KB)
📄
ofw_subr.c
(6.06 KB)
📄
ofw_subr.h
(2.29 KB)
📄
ofwbus.c
(7.77 KB)
📄
ofwpci.c
(17.52 KB)
📄
ofwpci.h
(2.53 KB)
📄
ofwvar.h
(2.75 KB)
📄
openfirm.c
(18.85 KB)
📄
openfirm.h
(7.47 KB)
📄
openfirmio.c
(7.59 KB)
📄
openfirmio.h
(3.7 KB)
Editing: ofw_fdt.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2009-2010 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under sponsorship from * the FreeBSD Foundation. * * 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 THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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 <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/systm.h> #include <contrib/libfdt/libfdt.h> #include <machine/stdarg.h> #include <dev/fdt/fdt_common.h> #include <dev/ofw/ofwvar.h> #include <dev/ofw/openfirm.h> #include <dev/ofw/ofw_bus_subr.h> #include "ofw_if.h" #ifdef DEBUG #define debugf(fmt, args...) do { printf("%s(): ", __func__); \ printf(fmt,##args); } while (0) #else #define debugf(fmt, args...) #endif #if defined(__arm__) #if defined(SOC_MV_ARMADAXP) || defined(SOC_MV_ARMADA38X) || \ defined(SOC_MV_DISCOVERY) || defined(SOC_MV_DOVE) || \ defined(SOC_MV_FREY) || defined(SOC_MV_KIRKWOOD) || \ defined(SOC_MV_LOKIPLUS) || defined(SOC_MV_ORION) #define FDT_MARVELL #endif #endif static int ofw_fdt_init(ofw_t, void *); static phandle_t ofw_fdt_peer(ofw_t, phandle_t); static phandle_t ofw_fdt_child(ofw_t, phandle_t); static phandle_t ofw_fdt_parent(ofw_t, phandle_t); static phandle_t ofw_fdt_instance_to_package(ofw_t, ihandle_t); static ssize_t ofw_fdt_getproplen(ofw_t, phandle_t, const char *); static ssize_t ofw_fdt_getprop(ofw_t, phandle_t, const char *, void *, size_t); static int ofw_fdt_nextprop(ofw_t, phandle_t, const char *, char *, size_t); static int ofw_fdt_setprop(ofw_t, phandle_t, const char *, const void *, size_t); static ssize_t ofw_fdt_canon(ofw_t, const char *, char *, size_t); static phandle_t ofw_fdt_finddevice(ofw_t, const char *); static ssize_t ofw_fdt_instance_to_path(ofw_t, ihandle_t, char *, size_t); static ssize_t ofw_fdt_package_to_path(ofw_t, phandle_t, char *, size_t); static int ofw_fdt_interpret(ofw_t, const char *, int, cell_t *); static ofw_method_t ofw_fdt_methods[] = { OFWMETHOD(ofw_init, ofw_fdt_init), OFWMETHOD(ofw_peer, ofw_fdt_peer), OFWMETHOD(ofw_child, ofw_fdt_child), OFWMETHOD(ofw_parent, ofw_fdt_parent), OFWMETHOD(ofw_instance_to_package, ofw_fdt_instance_to_package), OFWMETHOD(ofw_getproplen, ofw_fdt_getproplen), OFWMETHOD(ofw_getprop, ofw_fdt_getprop), OFWMETHOD(ofw_nextprop, ofw_fdt_nextprop), OFWMETHOD(ofw_setprop, ofw_fdt_setprop), OFWMETHOD(ofw_canon, ofw_fdt_canon), OFWMETHOD(ofw_finddevice, ofw_fdt_finddevice), OFWMETHOD(ofw_instance_to_path, ofw_fdt_instance_to_path), OFWMETHOD(ofw_package_to_path, ofw_fdt_package_to_path), OFWMETHOD(ofw_interpret, ofw_fdt_interpret), { 0, 0 } }; static ofw_def_t ofw_fdt = { OFW_FDT, ofw_fdt_methods, 0 }; OFW_DEF(ofw_fdt); static void *fdtp = NULL; static int sysctl_handle_dtb(SYSCTL_HANDLER_ARGS) { return (sysctl_handle_opaque(oidp, fdtp, fdt_totalsize(fdtp), req)); } static void sysctl_register_fdt_oid(void *arg) { /* If there is no FDT registered, skip adding the sysctl */ if (fdtp == NULL) return; SYSCTL_ADD_PROC(NULL, SYSCTL_STATIC_CHILDREN(_hw_fdt), OID_AUTO, "dtb", CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_handle_dtb, "", "Device Tree Blob"); } SYSINIT(dtb_oid, SI_SUB_KMEM, SI_ORDER_ANY, sysctl_register_fdt_oid, NULL); static int ofw_fdt_init(ofw_t ofw, void *data) { int err; /* Check FDT blob integrity */ if ((err = fdt_check_header(data)) != 0) return (err); fdtp = data; return (0); } /* * Device tree functions. * * We use the offset from fdtp to the node as the 'phandle' in OF interface. * * phandle is a u32 value, therefore we cannot use the pointer to node as * phandle in 64 bit. We also do not use the usual fdt offset as phandle, * as it can be 0, and the OF interface has special meaning for phandle 0. */ static phandle_t fdt_offset_phandle(int offset) { if (offset < 0) return (0); return ((phandle_t)offset + fdt_off_dt_struct(fdtp)); } static int fdt_phandle_offset(phandle_t p) { int pint = (int)p; int dtoff = fdt_off_dt_struct(fdtp); if (pint < dtoff) return (-1); return (pint - dtoff); } /* Return the next sibling of this node or 0. */ static phandle_t ofw_fdt_peer(ofw_t ofw, phandle_t node) { int offset; if (node == 0) { /* Find root node */ offset = fdt_path_offset(fdtp, "/"); return (fdt_offset_phandle(offset)); } offset = fdt_phandle_offset(node); if (offset < 0) return (0); offset = fdt_next_subnode(fdtp, offset); return (fdt_offset_phandle(offset)); } /* Return the first child of this node or 0. */ static phandle_t ofw_fdt_child(ofw_t ofw, phandle_t node) { int offset; offset = fdt_phandle_offset(node); if (offset < 0) return (0); offset = fdt_first_subnode(fdtp, offset); return (fdt_offset_phandle(offset)); } /* Return the parent of this node or 0. */ static phandle_t ofw_fdt_parent(ofw_t ofw, phandle_t node) { int offset, paroffset; offset = fdt_phandle_offset(node); if (offset < 0) return (0); paroffset = fdt_parent_offset(fdtp, offset); return (fdt_offset_phandle(paroffset)); } /* Return the package handle that corresponds to an instance handle. */ static phandle_t ofw_fdt_instance_to_package(ofw_t ofw, ihandle_t instance) { /* Where real OF uses ihandles in the tree, FDT uses xref phandles */ return (OF_node_from_xref(instance)); } /* Get the length of a property of a package. */ static ssize_t ofw_fdt_getproplen(ofw_t ofw, phandle_t package, const char *propname) { const void *prop; int offset, len; offset = fdt_phandle_offset(package); if (offset < 0) return (-1); len = -1; prop = fdt_getprop(fdtp, offset, propname, &len); if (prop == NULL && strcmp(propname, "name") == 0) { /* Emulate the 'name' property */ fdt_get_name(fdtp, offset, &len); return (len + 1); } if (prop == NULL && offset == fdt_path_offset(fdtp, "/chosen")) { if (strcmp(propname, "fdtbootcpu") == 0) return (sizeof(cell_t)); if (strcmp(propname, "fdtmemreserv") == 0) return (sizeof(uint64_t)*2*fdt_num_mem_rsv(fdtp)); } if (prop == NULL) return (-1); return (len); } /* Get the value of a property of a package. */ static ssize_t ofw_fdt_getprop(ofw_t ofw, phandle_t package, const char *propname, void *buf, size_t buflen) { const void *prop; const char *name; int len, offset; uint32_t cpuid; offset = fdt_phandle_offset(package); if (offset < 0) return (-1); prop = fdt_getprop(fdtp, offset, propname, &len); if (prop == NULL && strcmp(propname, "name") == 0) { /* Emulate the 'name' property */ name = fdt_get_name(fdtp, offset, &len); strncpy(buf, name, buflen); return (len + 1); } if (prop == NULL && offset == fdt_path_offset(fdtp, "/chosen")) { if (strcmp(propname, "fdtbootcpu") == 0) { cpuid = cpu_to_fdt32(fdt_boot_cpuid_phys(fdtp)); len = sizeof(cpuid); prop = &cpuid; } if (strcmp(propname, "fdtmemreserv") == 0) { prop = (char *)fdtp + fdt_off_mem_rsvmap(fdtp); len = sizeof(uint64_t)*2*fdt_num_mem_rsv(fdtp); } } if (prop == NULL) return (-1); bcopy(prop, buf, min(len, buflen)); return (len); } /* * Get the next property of a package. Return values: * -1: package or previous property does not exist * 0: no more properties * 1: success */ static int ofw_fdt_nextprop(ofw_t ofw, phandle_t package, const char *previous, char *buf, size_t size) { const void *prop; const char *name; int offset; offset = fdt_phandle_offset(package); if (offset < 0) return (-1); if (previous == NULL) /* Find the first prop in the node */ offset = fdt_first_property_offset(fdtp, offset); else { fdt_for_each_property_offset(offset, fdtp, offset) { prop = fdt_getprop_by_offset(fdtp, offset, &name, NULL); if (prop == NULL) return (-1); /* Internal error */ /* Skip until we find 'previous', then bail out */ if (strcmp(name, previous) != 0) continue; offset = fdt_next_property_offset(fdtp, offset); break; } } if (offset < 0) return (0); /* No properties */ prop = fdt_getprop_by_offset(fdtp, offset, &name, &offset); if (prop == NULL) return (-1); /* Internal error */ strncpy(buf, name, size); return (1); } /* Set the value of a property of a package. */ static int ofw_fdt_setprop(ofw_t ofw, phandle_t package, const char *propname, const void *buf, size_t len) { int offset; offset = fdt_phandle_offset(package); if (offset < 0) return (-1); if (fdt_setprop_inplace(fdtp, offset, propname, buf, len) != 0) /* Try to add property, when setting value inplace failed */ return (fdt_setprop(fdtp, offset, propname, buf, len)); return (0); } /* Convert a device specifier to a fully qualified pathname. */ static ssize_t ofw_fdt_canon(ofw_t ofw, const char *device, char *buf, size_t len) { return (-1); } /* Return a package handle for the specified device. */ static phandle_t ofw_fdt_finddevice(ofw_t ofw, const char *device) { int offset; offset = fdt_path_offset(fdtp, device); if (offset < 0) return (-1); return (fdt_offset_phandle(offset)); } /* Return the fully qualified pathname corresponding to an instance. */ static ssize_t ofw_fdt_instance_to_path(ofw_t ofw, ihandle_t instance, char *buf, size_t len) { phandle_t phandle; phandle = OF_instance_to_package(instance); if (phandle == -1) return (-1); return (OF_package_to_path(phandle, buf, len)); } /* Return the fully qualified pathname corresponding to a package. */ static ssize_t ofw_fdt_package_to_path(ofw_t ofw, phandle_t package, char *buf, size_t len) { return (-1); } #if defined(FDT_MARVELL) static int ofw_fdt_fixup(ofw_t ofw) { #define FDT_MODEL_LEN 80 char model[FDT_MODEL_LEN]; phandle_t root; ssize_t len; int i; if ((root = ofw_fdt_finddevice(ofw, "/")) == -1) return (ENODEV); if ((len = ofw_fdt_getproplen(ofw, root, "model")) <= 0) return (0); bzero(model, FDT_MODEL_LEN); if (ofw_fdt_getprop(ofw, root, "model", model, FDT_MODEL_LEN) <= 0) return (0); /* * Search fixup table and call handler if appropriate. */ for (i = 0; fdt_fixup_table[i].model != NULL; i++) { if (strncmp(model, fdt_fixup_table[i].model, FDT_MODEL_LEN) != 0) /* * Sometimes it's convenient to provide one * fixup entry that refers to many boards. * To handle this case, simply check if model * is compatible parameter */ if(!ofw_bus_node_is_compatible(root, fdt_fixup_table[i].model)) continue; if (fdt_fixup_table[i].handler != NULL) (*fdt_fixup_table[i].handler)(root); } return (0); } #endif static int ofw_fdt_interpret(ofw_t ofw, const char *cmd, int nret, cell_t *retvals) { #if defined(FDT_MARVELL) int rv; /* * Note: FDT does not have the possibility to 'interpret' commands, * but we abuse the interface a bit to use it for doing non-standard * operations on the device tree blob. * * Currently the only supported 'command' is to trigger performing * fixups. */ if (strncmp("perform-fixup", cmd, 13) != 0) return (0); rv = ofw_fdt_fixup(ofw); if (nret > 0) retvals[0] = rv; return (rv); #else return (0); #endif }
Upload File
Create Folder