diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/boot/Makefile | 2 | ||||
| -rw-r--r-- | arch/powerpc/boot/flatdevtree.c | 1036 | ||||
| -rw-r--r-- | arch/powerpc/boot/flatdevtree.h | 113 | ||||
| -rw-r--r-- | arch/powerpc/boot/flatdevtree_misc.c | 79 | ||||
| -rw-r--r-- | arch/powerpc/boot/main.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/boot/ops.h | 1 |
6 files changed, 1 insertions, 1231 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 2d2c9843ce9..af01b4f8ade 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -47,7 +47,7 @@ $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \ $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader)) src-libfdt := fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c -src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \ +src-wlib := string.S crt0.S stdio.c main.c \ $(addprefix libfdt/,$(src-libfdt)) libfdt-wrapper.c \ ns16550.c serial.c simple_alloc.c div64.S util.S \ gunzip_util.c elf_util.c $(zlib) devtree.c oflib.c ofconsole.c \ diff --git a/arch/powerpc/boot/flatdevtree.c b/arch/powerpc/boot/flatdevtree.c deleted file mode 100644 index cf30675c611..00000000000 --- a/arch/powerpc/boot/flatdevtree.c +++ /dev/null @@ -1,1036 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Copyright Pantelis Antoniou 2006 - * Copyright (C) IBM Corporation 2006 - * - * Authors: Pantelis Antoniou <pantelis@embeddedalley.com> - * Hollis Blanchard <hollisb@us.ibm.com> - * Mark A. Greer <mgreer@mvista.com> - * Paul Mackerras <paulus@samba.org> - */ - -#include <string.h> -#include <stddef.h> -#include "flatdevtree.h" -#include "flatdevtree_env.h" - -#define _ALIGN(x, al) (((x) + (al) - 1) & ~((al) - 1)) - -static char *ft_root_node(struct ft_cxt *cxt) -{ - return cxt->rgn[FT_STRUCT].start; -} - -/* Routines for keeping node ptrs returned by ft_find_device current */ -/* First entry not used b/c it would return 0 and be taken as NULL/error */ -static void *ft_get_phandle(struct ft_cxt *cxt, char *node) -{ - unsigned int i; - - if (!node) - return NULL; - - for (i = 1; i < cxt->nodes_used; i++) /* already there? */ - if (cxt->node_tbl[i] == node) - return (void *)i; - - if (cxt->nodes_used < cxt->node_max) { - cxt->node_tbl[cxt->nodes_used] = node; - return (void *)cxt->nodes_used++; - } - - return NULL; -} - -static char *ft_node_ph2node(struct ft_cxt *cxt, const void *phandle) -{ - unsigned int i = (unsigned int)phandle; - - if (i < cxt->nodes_used) - return cxt->node_tbl[i]; - return NULL; -} - -static void ft_node_update_before(struct ft_cxt *cxt, char *addr, int shift) -{ - unsigned int i; - - if (shift == 0) - return; - - for (i = 1; i < cxt->nodes_used; i++) - if (cxt->node_tbl[i] < addr) - cxt->node_tbl[i] += shift; -} - -static void ft_node_update_after(struct ft_cxt *cxt, char *addr, int shift) -{ - unsigned int i; - - if (shift == 0) - return; - - for (i = 1; i < cxt->nodes_used; i++) - if (cxt->node_tbl[i] >= addr) - cxt->node_tbl[i] += shift; -} - -/* Struct used to return info from ft_next() */ -struct ft_atom { - u32 tag; - const char *name; - void *data; - u32 size; -}; - -/* Set ptrs to current one's info; return addr of next one */ -static char *ft_next(struct ft_cxt *cxt, char *p, struct ft_atom *ret) -{ - u32 sz; - - if (p >= cxt->rgn[FT_STRUCT].start + cxt->rgn[FT_STRUCT].size) - return NULL; - - ret->tag = be32_to_cpu(*(u32 *) p); - p += 4; - - switch (ret->tag) { /* Tag */ - case OF_DT_BEGIN_NODE: - ret->name = p; - ret->data = (void *)(p - 4); /* start of node */ - p += _ALIGN(strlen(p) + 1, 4); - break; - case OF_DT_PROP: - ret->size = sz = be32_to_cpu(*(u32 *) p); - ret->name = cxt->str_anchor + be32_to_cpu(*(u32 *) (p + 4)); - ret->data = (void *)(p + 8); - p += 8 + _ALIGN(sz, 4); - break; - case OF_DT_END_NODE: - case OF_DT_NOP: - break; - case OF_DT_END: - default: - p = NULL; - break; - } - - return p; -} - -#define HDR_SIZE _ALIGN(sizeof(struct boot_param_header), 8) -#define EXPAND_INCR 1024 /* alloc this much extra when expanding */ - -/* Copy the tree to a newly-allocated region and put things in order */ -static int ft_reorder(struct ft_cxt *cxt, int nextra) -{ - unsigned long tot; - enum ft_rgn_id r; - char *p, *pend; - int stroff; - - tot = HDR_SIZE + EXPAND_INCR; - for (r = FT_RSVMAP; r <= FT_STRINGS; ++r) - tot += cxt->rgn[r].size; - if (nextra > 0) - tot += nextra; - tot = _ALIGN(tot, 8); - - if (!cxt->realloc) - return 0; - p = cxt->realloc(NULL, tot); - if (!p) - return 0; - - memcpy(p, cxt->bph, sizeof(struct boot_param_header)); - /* offsets get fixed up later */ - - cxt->bph = (struct boot_param_header *)p; - cxt->max_size = tot; - pend = p + tot; - p += HDR_SIZE; - - memcpy(p, cxt->rgn[FT_RSVMAP].start, cxt->rgn[FT_RSVMAP].size); - cxt->rgn[FT_RSVMAP].start = p; - p += cxt->rgn[FT_RSVMAP].size; - - memcpy(p, cxt->rgn[FT_STRUCT].start, cxt->rgn[FT_STRUCT].size); - ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start, - p - cxt->rgn[FT_STRUCT].start); - cxt->p += p - cxt->rgn[FT_STRUCT].start; - cxt->rgn[FT_STRUCT].start = p; - - p = pend - cxt->rgn[FT_STRINGS].size; - memcpy(p, cxt->rgn[FT_STRINGS].start, cxt->rgn[FT_STRINGS].size); - stroff = cxt->str_anchor - cxt->rgn[FT_STRINGS].start; - cxt->rgn[FT_STRINGS].start = p; - cxt->str_anchor = p + stroff; - - cxt->isordered = 1; - return 1; -} - -static inline char *prev_end(struct ft_cxt *cxt, enum ft_rgn_id r) -{ - if (r > FT_RSVMAP) - return cxt->rgn[r - 1].start + cxt->rgn[r - 1].size; - return (char *)cxt->bph + HDR_SIZE; -} - -static inline char *next_start(struct ft_cxt *cxt, enum ft_rgn_id r) -{ - if (r < FT_STRINGS) - return cxt->rgn[r + 1].start; - return (char *)cxt->bph + cxt->max_size; -} - -/* - * See if we can expand region rgn by nextra bytes by using up - * free space after or before the region. - */ -static int ft_shuffle(struct ft_cxt *cxt, char **pp, enum ft_rgn_id rgn, - int nextra) -{ - char *p = *pp; - char *rgn_start, *rgn_end; - - rgn_start = cxt->rgn[rgn].start; - rgn_end = rgn_start + cxt->rgn[rgn].size; - if (nextra <= 0 || rgn_end + nextra <= next_start(cxt, rgn)) { - /* move following stuff */ - if (p < rgn_end) { - if (nextra < 0) - memmove(p, p - nextra, rgn_end - p + nextra); - else - memmove(p + nextra, p, rgn_end - p); - if (rgn == FT_STRUCT) - ft_node_update_after(cxt, p, nextra); - } - cxt->rgn[rgn].size += nextra; - if (rgn == FT_STRINGS) - /* assumes strings only added at beginning */ - cxt->str_anchor += nextra; - return 1; - } - if (prev_end(cxt, rgn) <= rgn_start - nextra) { - /* move preceding stuff */ - if (p > rgn_start) { - memmove(rgn_start - nextra, rgn_start, p - rgn_start); - if (rgn == FT_STRUCT) - ft_node_update_before(cxt, p, -nextra); - } - *pp -= nextra; - cxt->rgn[rgn].start -= nextra; - cxt->rgn[rgn].size += nextra; - return 1; - } - return 0; -} - -static int ft_make_space(struct ft_cxt *cxt, char **pp, enum ft_rgn_id rgn, - int nextra) -{ - unsigned long size, ssize, tot; - char *str, *next; - enum ft_rgn_id r; - - if (!cxt->isordered) { - unsigned long rgn_off = *pp - cxt->rgn[rgn].start; - - if (!ft_reorder(cxt, nextra)) - return 0; - - *pp = cxt->rgn[rgn].start + rgn_off; - } - if (ft_shuffle(cxt, pp, rgn, nextra)) - return 1; - - /* See if there is space after the strings section */ - ssize = cxt->rgn[FT_STRINGS].size; - if (cxt->rgn[FT_STRINGS].start + ssize - < (char *)cxt->bph + cxt->max_size) { - /* move strings up as far as possible */ - str = (char *)cxt->bph + cxt->max_size - ssize; - cxt->str_anchor += str - cxt->rgn[FT_STRINGS].start; - memmove(str, cxt->rgn[FT_STRINGS].start, ssize); - cxt->rgn[FT_STRINGS].start = str; - /* enough space now? */ - if (rgn >= FT_STRUCT && ft_shuffle(cxt, pp, rgn, nextra)) - return 1; - } - - /* how much total free space is there following this region? */ - tot = 0; - for (r = rgn; r < FT_STRINGS; ++r) { - char *r_end = cxt->rgn[r].start + cxt->rgn[r].size; - tot += next_start(cxt, rgn) - r_end; - } - - /* cast is to shut gcc up; we know nextra >= 0 */ - if (tot < (unsigned int)nextra) { - /* have to reallocate */ - char *newp, *new_start; - int shift; - - if (!cxt->realloc) - return 0; - size = _ALIGN(cxt->max_size + (nextra - tot) + EXPAND_INCR, 8); - newp = cxt->realloc(cxt->bph, size); - if (!newp) - return 0; - cxt->max_size = size; - shift = newp - (char *)cxt->bph; - - if (shift) { /* realloc can return same addr */ - cxt->bph = (struct boot_param_header *)newp; - ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start, - shift); - for (r = FT_RSVMAP; r <= FT_STRINGS; ++r) { - new_start = cxt->rgn[r].start + shift; - cxt->rgn[r].start = new_start; - } - *pp += shift; - cxt->str_anchor += shift; - } - - /* move strings up to the end */ - str = newp + size - ssize; - cxt->str_anchor += str - cxt->rgn[FT_STRINGS].start; - memmove(str, cxt->rgn[FT_STRINGS].start, ssize); - cxt->rgn[FT_STRINGS].start = str; - - if (ft_shuffle(cxt, pp, rgn, nextra)) - return 1; - } - - /* must be FT_RSVMAP and we need to move FT_STRUCT up */ - if (rgn == FT_RSVMAP) { - next = cxt->rgn[FT_RSVMAP].start + cxt->rgn[FT_RSVMAP].size - + nextra; - ssize = cxt->rgn[FT_STRUCT].size; - if (next + ssize >= cxt->rgn[FT_STRINGS].start) - return 0; /* "can't happen" */ - memmove(next, cxt->rgn[FT_STRUCT].start, ssize); - ft_node_update_after(cxt, cxt->rgn[FT_STRUCT].start, nextra); - cxt->rgn[FT_STRUCT].start = next; - - if (ft_shuffle(cxt, pp, rgn, nextra)) - return 1; - } - - return 0; /* "can't happen" */ -} - -static void ft_put_word(struct ft_cxt *cxt, u32 v) -{ - *(u32 *) cxt->p = cpu_to_be32(v); - cxt->p += 4; -} - -static void ft_put_bin(struct ft_cxt *cxt, const void *data, unsigned int sz) -{ - unsigned long sza = _ALIGN(sz, 4); - - /* zero out the alignment gap if necessary */ - if (sz < sza) - *(u32 *) (cxt->p + sza - 4) = 0; - - /* copy in the data */ - memcpy(cxt->p, data, sz); - - cxt->p += sza; -} - -char *ft_begin_node(struct ft_cxt *cxt, const char *name) -{ - unsigned long nlen = strlen(name) + 1; - unsigned long len = 8 + _ALIGN(nlen, 4); - char *ret; - - if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, len)) - return NULL; - - ret = cxt->p; - - ft_put_word(cxt, OF_DT_BEGIN_NODE); - ft_put_bin(cxt, name, strlen(name) + 1); - - return ret; -} - -void ft_end_node(struct ft_cxt *cxt) -{ - ft_put_word(cxt, OF_DT_END_NODE); -} - -void ft_nop(struct ft_cxt *cxt) -{ - if (ft_make_space(cxt, &cxt->p, FT_STRUCT, 4)) - ft_put_word(cxt, OF_DT_NOP); -} - -#define NO_STRING 0x7fffffff - -static int lookup_string(struct ft_cxt *cxt, const char *name) -{ - char *p, *end; - - p = cxt->rgn[FT_STRINGS].start; - end = p + cxt->rgn[FT_STRINGS].size; - while (p < end) { - if (strcmp(p, (char *)name) == 0) - return p - cxt->str_anchor; - p += strlen(p) + 1; - } - - return NO_STRING; -} - -/* lookup string and insert if not found */ -static int map_string(struct ft_cxt *cxt, const char *name) -{ - int off; - char *p; - - off = lookup_string(cxt, name); - if (off != NO_STRING) - return off; - p = cxt->rgn[FT_STRINGS].start; - if (!ft_make_space(cxt, &p, FT_STRINGS, strlen(name) + 1)) - return NO_STRING; - strcpy(p, name); - return p - cxt->str_anchor; -} - -int ft_prop(struct ft_cxt *cxt, const char *name, const void *data, - unsigned int sz) -{ - int off, len; - - off = map_string(cxt, name); - if (off == NO_STRING) - return -1; - - len = 12 + _ALIGN(sz, 4); - if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, len)) - return -1; - - ft_put_word(cxt, OF_DT_PROP); - ft_put_word(cxt, sz); - ft_put_word(cxt, off); - ft_put_bin(cxt, data, sz); - return 0; -} - -int ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str) -{ - return ft_prop(cxt, name, str, strlen(str) + 1); -} - -int ft_prop_int(struct ft_cxt *cxt, const char *name, unsigned int val) -{ - u32 v = cpu_to_be32((u32) val); - - return ft_prop(cxt, name, &v, 4); -} - -/* Calculate the size of the reserved map */ -static unsigned long rsvmap_size(struct ft_cxt *cxt) -{ - struct ft_reserve *res; - - res = (struct ft_reserve *)cxt->rgn[FT_RSVMAP].start; - while (res->start || res->len) - ++res; - return (char *)(res + 1) - cxt->rgn[FT_RSVMAP].start; -} - -/* Calculate the size of the struct region by stepping through it */ -static unsigned long struct_size(struct ft_cxt *cxt) -{ - char *p = cxt->rgn[FT_STRUCT].start; - char *next; - struct ft_atom atom; - - /* make check in ft_next happy */ - if (cxt->rgn[FT_STRUCT].size == 0) - cxt->rgn[FT_STRUCT].size = 0xfffffffful - (unsigned long)p; - - while ((next = ft_next(cxt, p, &atom)) != NULL) - p = next; - return p + 4 - cxt->rgn[FT_STRUCT].start; -} - -/* add `adj' on to all string offset values in the struct area */ -static void adjust_string_offsets(struct ft_cxt *cxt, int adj) -{ - char *p = cxt->rgn[FT_STRUCT].start; - char *next; - struct ft_atom atom; - int off; - - while ((next = ft_next(cxt, p, &atom)) != NULL) { - if (atom.tag == OF_DT_PROP) { - off = be32_to_cpu(*(u32 *) (p + 8)); - *(u32 *) (p + 8) = cpu_to_be32(off + adj); - } - p = next; - } -} - -/* start construction of the flat OF tree from scratch */ -void ft_begin(struct ft_cxt *cxt, void *blob, unsigned int max_size, - void *(*realloc_fn) (void *, unsigned long)) -{ - struct boot_param_header *bph = blob; - char *p; - struct ft_reserve *pres; - - /* clear the cxt */ - memset(cxt, 0, sizeof(*cxt)); - - cxt->bph = bph; - cxt->max_size = max_size; - cxt->realloc = realloc_fn; - cxt->isordered = 1; - - /* zero everything in the header area */ - memset(bph, 0, sizeof(*bph)); - - bph->magic = cpu_to_be32(OF_DT_HEADER); - bph->version = cpu_to_be32(0x10); - bph->last_comp_version = cpu_to_be32(0x10); - - /* start pointers */ - cxt->rgn[FT_RSVMAP].start = p = blob + HDR_SIZE; - cxt->rgn[FT_RSVMAP].size = sizeof(struct ft_reserve); - pres = (struct ft_reserve *)p; - cxt->rgn[FT_STRUCT].start = p += sizeof(struct ft_reserve); - cxt->rgn[FT_STRUCT].size = 4; - cxt->rgn[FT_STRINGS].start = blob + max_size; - cxt->rgn[FT_STRINGS].size = 0; - - /* init rsvmap and struct */ - pres->start = 0; - pres->len = 0; - *(u32 *) p = cpu_to_be32(OF_DT_END); - - cxt->str_anchor = blob; -} - -/* open up an existing blob to be examined or modified */ -int ft_open(struct ft_cxt *cxt, void *blob, unsigned int max_size, - unsigned int max_find_device, - void *(*realloc_fn) (void *, unsigned long)) -{ - struct boot_param_header *bph = blob; - - /* can't cope with version < 16 */ - if (be32_to_cpu(bph->version) < 16) - return -1; - - /* clear the cxt */ - memset(cxt, 0, sizeof(*cxt)); - - /* alloc node_tbl to track node ptrs returned by ft_find_device */ - ++max_find_device; - cxt->node_tbl = realloc_fn(NULL, max_find_device * sizeof(char *)); - if (!cxt->node_tbl) - return -1; - memset(cxt->node_tbl, 0, max_find_device * sizeof(char *)); - cxt->node_max = max_find_device; - cxt->nodes_used = 1; /* don't use idx 0 b/c looks like NULL */ - - cxt->bph = bph; - cxt->max_size = max_size; - cxt->realloc = realloc_fn; - - cxt->rgn[FT_RSVMAP].start = blob + be32_to_cpu(bph->off_mem_rsvmap); - cxt->rgn[FT_RSVMAP].size = rsvmap_size(cxt); - cxt->rgn[FT_STRUCT].start = blob + be32_to_cpu(bph->off_dt_struct); - cxt->rgn[FT_STRUCT].size = struct_size(cxt); - cxt->rgn[FT_STRINGS].start = blob + be32_to_cpu(bph->off_dt_strings); - cxt->rgn[FT_STRINGS].size = be32_to_cpu(bph->dt_strings_size); - - cxt->p = cxt->rgn[FT_STRUCT].start; - cxt->str_anchor = cxt->rgn[FT_STRINGS].start; - - return 0; -} - -/* add a reserver physical area to the rsvmap */ -int ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size) -{ - char *p; - struct ft_reserve *pres; - - p = cxt->rgn[FT_RSVMAP].start + cxt->rgn[FT_RSVMAP].size - - sizeof(struct ft_reserve); - if (!ft_make_space(cxt, &p, FT_RSVMAP, sizeof(struct ft_reserve))) - return -1; - - pres = (struct ft_reserve *)p; - pres->start = cpu_to_be64(physaddr); - pres->len = cpu_to_be64(size); - - return 0; -} - -void ft_begin_tree(struct ft_cxt *cxt) -{ - cxt->p = ft_root_node(cxt); -} - -void ft_end_tree(struct ft_cxt *cxt) -{ - struct boot_param_header *bph = cxt->bph; - char *p, *oldstr, *str, *endp; - unsigned long ssize; - int adj; - - if (!cxt->isordered) - return; /* we haven't touched anything */ - - /* adjust string offsets */ - oldstr = cxt->rgn[FT_STRINGS].start; - adj = cxt->str_anchor - oldstr; - if (adj) - adjust_string_offsets(cxt, adj); - - /* make strings end on 8-byte boundary */ - ssize = cxt->rgn[FT_STRINGS].size; - endp = (char *)_ALIGN((unsigned long)cxt->rgn[FT_STRUCT].start - + cxt->rgn[FT_STRUCT].size + ssize, 8); - str = endp - ssize; - - /* move strings down to end of structs */ - memmove(str, oldstr, ssize); - cxt->str_anchor = str; - cxt->rgn[FT_STRINGS].start = str; - - /* fill in header fields */ - p = (char *)bph; - bph->totalsize = cpu_to_be32(endp - p); - bph->off_mem_rsvmap = cpu_to_be32(cxt->rgn[FT_RSVMAP].start - p); - bph->off_dt_struct = cpu_to_be32(cxt->rgn[FT_STRUCT].start - p); - bph->off_dt_strings = cpu_to_be32(cxt->rgn[FT_STRINGS].start - p); - bph->dt_strings_size = cpu_to_be32(ssize); -} - -void *ft_find_device(struct ft_cxt *cxt, const void *top, const char *srch_path) -{ - char *node; - - if (top) { - node = ft_node_ph2node(cxt, top); - if (node == NULL) - return NULL; - } else { - node = ft_root_node(cxt); - } - - node = ft_find_descendent(cxt, node, srch_path); - return ft_get_phandle(cxt, node); -} - -void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path) -{ - struct ft_atom atom; - char *p; - const char *cp, *q; - int cl; - int depth = -1; - int dmatch = 0; - const char *path_comp[FT_MAX_DEPTH]; - - cp = srch_path; - cl = 0; - p = top; - - while ((p = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - ++depth; - if (depth != dmatch) - break; - cxt->genealogy[depth] = atom.data; - cxt->genealogy[depth + 1] = NULL; - if (depth && !(strncmp(atom.name, cp, cl) == 0 - && (atom.name[cl] == '/' - || atom.name[cl] == '\0' - || atom.name[cl] == '@'))) - break; - path_comp[dmatch] = cp; - /* it matches so far, advance to next path component */ - cp += cl; - /* skip slashes */ - while (*cp == '/') - ++cp; - /* we're done if this is the end of the string */ - if (*cp == 0) - return atom.data; - /* look for end of this component */ - q = strchr(cp, '/'); - if (q) - cl = q - cp; - else - cl = strlen(cp); - ++dmatch; - break; - case OF_DT_END_NODE: - if (depth == 0) - return NULL; - if (dmatch > depth) { - --dmatch; - cl = cp - path_comp[dmatch] - 1; - cp = path_comp[dmatch]; - while (cl > 0 && cp[cl - 1] == '/') - --cl; - } - --depth; - break; - } - } - return NULL; -} - -void *__ft_get_parent(struct ft_cxt *cxt, void *node) -{ - int d; - struct ft_atom atom; - char *p; - - for (d = 0; cxt->genealogy[d] != NULL; ++d) - if (cxt->genealogy[d] == node) - return d > 0 ? cxt->genealogy[d - 1] : NULL; - - /* have to do it the hard way... */ - p = ft_root_node(cxt); - d = 0; - while ((p = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - cxt->genealogy[d] = atom.data; - if (node == atom.data) { - /* found it */ - cxt->genealogy[d + 1] = NULL; - return d > 0 ? cxt->genealogy[d - 1] : NULL; - } - ++d; - break; - case OF_DT_END_NODE: - --d; - break; - } - } - return NULL; -} - -void *ft_get_parent(struct ft_cxt *cxt, const void *phandle) -{ - void *node = ft_node_ph2node(cxt, phandle); - if (node == NULL) - return NULL; - - node = __ft_get_parent(cxt, node); - return ft_get_phandle(cxt, node); -} - -static const void *__ft_get_prop(struct ft_cxt *cxt, void *node, - const char *propname, unsigned int *len) -{ - struct ft_atom atom; - int depth = 0; - - while ((node = ft_next(cxt, node, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - ++depth; - break; - - case OF_DT_PROP: - if (depth != 1 || strcmp(atom.name, propname)) - break; - - if (len) - *len = atom.size; - - return atom.data; - - case OF_DT_END_NODE: - if (--depth <= 0) - return NULL; - } - } - - return NULL; -} - -int ft_get_prop(struct ft_cxt *cxt, const void *phandle, const char *propname, - void *buf, const unsigned int buflen) -{ - const void *data; - unsigned int size; - - void *node = ft_node_ph2node(cxt, phandle); - if (!node) - return -1; - - data = __ft_get_prop(cxt, node, propname, &size); - if (data) { - unsigned int clipped_size = min(size, buflen); - memcpy(buf, data, clipped_size); - return size; - } - - return -1; -} - -void *__ft_find_node_by_prop_value(struct ft_cxt *cxt, void *prev, - const char *propname, const char *propval, - unsigned int proplen) -{ - struct ft_atom atom; - char *p = ft_root_node(cxt); - char *next; - int past_prev = prev ? 0 : 1; - int depth = -1; - - while ((next = ft_next(cxt, p, &atom)) != NULL) { - const void *data; - unsigned int size; - - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - depth++; - - if (prev == p) { - past_prev = 1; - break; - } - - if (!past_prev || depth < 1) - break; - - data = __ft_get_prop(cxt, p, propname, &size); - if (!data || size != proplen) - break; - if (memcmp(data, propval, size)) - break; - - return p; - - case OF_DT_END_NODE: - if (depth-- == 0) - return NULL; - - break; - } - - p = next; - } - - return NULL; -} - -void *ft_find_node_by_prop_value(struct ft_cxt *cxt, const void *prev, - const char *propname, const char *propval, - int proplen) -{ - void *node = NULL; - - if (prev) { - node = ft_node_ph2node(cxt, prev); - - if (!node) - return NULL; - } - - node = __ft_find_node_by_prop_value(cxt, node, propname, - propval, proplen); - return ft_get_phandle(cxt, node); -} - -int ft_set_prop(struct ft_cxt *cxt, const void *phandle, const char *propname, - const void *buf, const unsigned int buflen) -{ - struct ft_atom atom; - void *node; - char *p, *next; - int nextra; - - node = ft_node_ph2node(cxt, phandle); - if (node == NULL) - return -1; - - next = ft_next(cxt, node, &atom); - if (atom.tag != OF_DT_BEGIN_NODE) - /* phandle didn't point to a node */ - return -1; - p = next; - - while ((next = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: /* properties must go before subnodes */ - case OF_DT_END_NODE: - /* haven't found the property, insert here */ - cxt->p = p; - return ft_prop(cxt, propname, buf, buflen); - case OF_DT_PROP: - if (strcmp(atom.name, propname)) - break; - /* found an existing property, overwrite it */ - nextra = _ALIGN(buflen, 4) - _ALIGN(atom.size, 4); - cxt->p = atom.data; - if (nextra && !ft_make_space(cxt, &cxt->p, FT_STRUCT, - nextra)) - return -1; - *(u32 *) (cxt->p - 8) = cpu_to_be32(buflen); - ft_put_bin(cxt, buf, buflen); - return 0; - } - p = next; - } - return -1; -} - -int ft_del_prop(struct ft_cxt *cxt, const void *phandle, const char *propname) -{ - struct ft_atom atom; - void *node; - char *p, *next; - int size; - - node = ft_node_ph2node(cxt, phandle); - if (node == NULL) - return -1; - - p = node; - while ((next = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - case OF_DT_END_NODE: - return -1; - case OF_DT_PROP: - if (strcmp(atom.name, propname)) - break; - /* found the property, remove it */ - size = 12 + -_ALIGN(atom.size, 4); - cxt->p = p; - if (!ft_make_space(cxt, &cxt->p, FT_STRUCT, -size)) - return -1; - return 0; - } - p = next; - } - return -1; -} - -void *ft_create_node(struct ft_cxt *cxt, const void *parent, const char *name) -{ - struct ft_atom atom; - char *p, *next, *ret; - int depth = 0; - - if (parent) { - p = ft_node_ph2node(cxt, parent); - if (!p) - return NULL; - } else { - p = ft_root_node(cxt); - } - - while ((next = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - ++depth; - if (depth == 1 && strcmp(atom.name, name) == 0) - /* duplicate node name, return error */ - return NULL; - break; - case OF_DT_END_NODE: - --depth; - if (depth > 0) - break; - /* end of node, insert here */ - cxt->p = p; - ret = ft_begin_node(cxt, name); - ft_end_node(cxt); - return ft_get_phandle(cxt, ret); - } - p = next; - } - return NULL; -} - -/* Returns the start of the path within the provided buffer, or NULL on - * error. - */ -char *ft_get_path(struct ft_cxt *cxt, const void *phandle, - char *buf, int len) -{ - const char *path_comp[FT_MAX_DEPTH]; - struct ft_atom atom; - char *p, *next, *pos; - int depth = 0, i; - void *node; - - node = ft_node_ph2node(cxt, phandle); - if (node == NULL) - return NULL; - - p = ft_root_node(cxt); - - while ((next = ft_next(cxt, p, &atom)) != NULL) { - switch (atom.tag) { - case OF_DT_BEGIN_NODE: - path_comp[depth++] = atom.name; - if (p == node) - goto found; - - break; - - case OF_DT_END_NODE: - if (--depth == 0) - return NULL; - } - - p = next; - } - -found: - pos = buf; - for (i = 1; i < depth; i++) { - int this_len; - - if (len <= 1) - return NULL; - - *pos++ = '/'; - len--; - - strncpy(pos, path_comp[i], len); - - if (pos[len - 1] != 0) - return NULL; - - this_len = strlen(pos); - len -= this_len; - pos += this_len; - } - - return buf; -} diff --git a/arch/powerpc/boot/flatdevtree.h b/arch/powerpc/boot/flatdevtree.h deleted file mode 100644 index b0957a2d967..00000000000 --- a/arch/powerpc/boot/flatdevtree.h +++ /dev/null @@ -1,113 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#ifndef FLATDEVTREE_H -#define FLATDEVTREE_H - -#include "flatdevtree_env.h" - -/* Definitions used by the flattened device tree */ -#define OF_DT_HEADER 0xd00dfeed /* marker */ -#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */ -#define OF_DT_END_NODE 0x2 /* End node */ -#define OF_DT_PROP 0x3 /* Property: name off, size, content */ -#define OF_DT_NOP 0x4 /* nop */ -#define OF_DT_END 0x9 - -#define OF_DT_VERSION 0x10 - -struct boot_param_header { - u32 magic; /* magic word OF_DT_HEADER */ - u32 totalsize; /* total size of DT block */ - u32 off_dt_struct; /* offset to structure */ - u32 off_dt_strings; /* offset to strings */ - u32 off_mem_rsvmap; /* offset to memory reserve map */ - u32 version; /* format version */ - u32 last_comp_version; /* last compatible version */ - /* version 2 fields below */ - u32 boot_cpuid_phys; /* Physical CPU id we're booting on */ - /* version 3 fields below */ - u32 dt_strings_size; /* size of the DT strings block */ -}; - -struct ft_reserve { - u64 start; - u64 len; -}; - -struct ft_region { - char *start; - unsigned long size; -}; - -enum ft_rgn_id { - FT_RSVMAP, - FT_STRUCT, - FT_STRINGS, - FT_N_REGION -}; - -#define FT_MAX_DEPTH 50 - -struct ft_cxt { - struct boot_param_header *bph; - int max_size; /* maximum size of tree */ - int isordered; /* everything in standard order */ - void *(*realloc)(void *, unsigned long); - char *str_anchor; - char *p; /* current insertion point in structs */ - struct ft_region rgn[FT_N_REGION]; - void *genealogy[FT_MAX_DEPTH+1]; - char **node_tbl; - unsigned int node_max; - unsigned int nodes_used; -}; - -char *ft_begin_node(struct ft_cxt *cxt, const char *name); -void ft_end_node(struct ft_cxt *cxt); - -void ft_begin_tree(struct ft_cxt *cxt); -void ft_end_tree(struct ft_cxt *cxt); - -void ft_nop(struct ft_cxt *cxt); -int ft_prop(struct ft_cxt *cxt, const char *name, - const void *data, unsigned int sz); -int ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str); -int ft_prop_int(struct ft_cxt *cxt, const char *name, unsigned int val); -void ft_begin(struct ft_cxt *cxt, void *blob, unsigned int max_size, - void *(*realloc_fn)(void *, unsigned long)); -int ft_open(struct ft_cxt *cxt, void *blob, unsigned int max_size, - unsigned int max_find_device, - void *(*realloc_fn)(void *, unsigned long)); -int ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size); - -void ft_dump_blob(const void *bphp); -void ft_merge_blob(struct ft_cxt *cxt, void *blob); -void *ft_find_device(struct ft_cxt *cxt, const void *top, - const char *srch_path); -void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path); -int ft_get_prop(struct ft_cxt *cxt, const void *phandle, const char *propname, - void *buf, const unsigned int buflen); -int ft_set_prop(struct ft_cxt *cxt, const void *phandle, const char *propname, - const void *buf, const unsigned int buflen); -void *ft_get_parent(struct ft_cxt *cxt, const void *phandle); -void *ft_find_node_by_prop_value(struct ft_cxt *cxt, const void *prev, - const char *propname, const char *propval, - int proplen); -void *ft_create_node(struct ft_cxt *cxt, const void *parent, const char *name); -char *ft_get_path(struct ft_cxt *cxt, const void *phandle, char *buf, int len); - -#endif /* FLATDEVTREE_H */ diff --git a/arch/powerpc/boot/flatdevtree_misc.c b/arch/powerpc/boot/flatdevtree_misc.c deleted file mode 100644 index b3670096fa7..00000000000 --- a/arch/powerpc/boot/flatdevtree_misc.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * This file does the necessary interface mapping between the bootwrapper - * device tree operations and the interface provided by shared source - * files flatdevicetree.[ch]. - * - * Author: Mark A. Greer <mgreer@mvista.com> - * - * 2006 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ -#include <stddef.h> -#include "flatdevtree.h" -#include "ops.h" - -static struct ft_cxt cxt; - -static void *fdtm_finddevice(const char *name) -{ - return ft_find_device(&cxt, NULL, name); -} - -static int fdtm_getprop(const void *phandle, const char *propname, - void *buf, const int buflen) -{ - return ft_get_prop(&cxt, phandle, propname, buf, buflen); -} - -static int fdtm_setprop(const void *phandle, const char *propname, - const void *buf, const int buflen) -{ - return ft_set_prop(&cxt, phandle, propname, buf, buflen); -} - -static void *fdtm_get_parent(const void *phandle) -{ - return ft_get_parent(&cxt, phandle); -} - -static void *fdtm_create_node(const void *phandle, const char *name) -{ - return ft_create_node(&cxt, phandle, name); -} - -static void *fdtm_find_node_by_prop_value(const void *prev, - const char *propname, - const char *propval, - int proplen) -{ - return ft_find_node_by_prop_value(&cxt, prev, propname, - propval, proplen); -} - -static unsigned long fdtm_finalize(void) -{ - ft_end_tree(&cxt); - return (unsigned long)cxt.bph; -} - -static char *fdtm_get_path(const void *phandle, char *buf, int len) -{ - return ft_get_path(&cxt, phandle, buf, len); -} - -int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device) -{ - dt_ops.finddevice = fdtm_finddevice; - dt_ops.getprop = fdtm_getprop; - dt_ops.setprop = fdtm_setprop; - dt_ops.get_parent = fdtm_get_parent; - dt_ops.create_node = fdtm_create_node; - dt_ops.find_node_by_prop_value = fdtm_find_node_by_prop_value; - dt_ops.finalize = fdtm_finalize; - dt_ops.get_path = fdtm_get_path; - - return ft_open(&cxt, dt_blob, max_size, max_find_device, - platform_ops.realloc); -} diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c index 1b496b37eca..9e7f3ddd991 100644 --- a/arch/powerpc/boot/main.c +++ b/arch/powerpc/boot/main.c @@ -16,7 +16,6 @@ #include "stdio.h" #include "ops.h" #include "gunzip_util.h" -#include "flatdevtree.h" #include "reg.h" static struct gunzip_state gzstate; diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h index 28df2c5a976..6036a98e646 100644 --- a/arch/powerpc/boot/ops.h +++ b/arch/powerpc/boot/ops.h @@ -79,7 +79,6 @@ struct loader_info { extern struct loader_info loader_info; void start(void); -int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device); void fdt_init(void *blob); int serial_console_init(void); int ns16550_console_init(void *devp, struct serial_console_data *scdp); |