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![Grant Likely](/assets/img/avatar_default.png)
isprint is already defined in ctype.c Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
588 lines
13 KiB
C
588 lines
13 KiB
C
/*
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* OF flat tree builder
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* Written by: Pantelis Antoniou <pantelis.antoniou@gmail.com>
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* Updated by: Matthew McClintock <msm@freescale.com>
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*
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <environment.h>
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#ifdef CONFIG_OF_FLAT_TREE
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#include <asm/errno.h>
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#include <stddef.h>
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#include <ft_build.h>
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#include <linux/ctype.h>
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#undef DEBUG
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/* align addr on a size boundary - adjust address up if needed -- Cort */
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#define _ALIGN(addr,size) (((addr)+(size)-1)&(~((size)-1)))
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#ifndef CONFIG_OF_BOOT_CPU
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#define CONFIG_OF_BOOT_CPU 0
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#endif
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#define SIZE_OF_RSVMAP_ENTRY (2*sizeof(u64))
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static void ft_put_word(struct ft_cxt *cxt, u32 v)
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{
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memmove(cxt->p + sizeof(u32), cxt->p, cxt->p_end - cxt->p);
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*(u32 *) cxt->p = cpu_to_be32(v);
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cxt->p += sizeof(u32);
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cxt->p_end += sizeof(u32);
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}
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static inline void ft_put_bin(struct ft_cxt *cxt, const void *data, int sz)
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{
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int aligned_size = ((u8 *)_ALIGN((unsigned long)cxt->p + sz,
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sizeof(u32))) - cxt->p;
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memmove(cxt->p + aligned_size, cxt->p, cxt->p_end - cxt->p);
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/* make sure the last bytes are zeroed */
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memset(cxt->p + aligned_size - (aligned_size % sizeof(u32)), 0,
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(aligned_size % sizeof(u32)));
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memcpy(cxt->p, data, sz);
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cxt->p += aligned_size;
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cxt->p_end += aligned_size;
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}
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void ft_begin_node(struct ft_cxt *cxt, const char *name)
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{
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ft_put_word(cxt, OF_DT_BEGIN_NODE);
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ft_put_bin(cxt, name, strlen(name) + 1);
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}
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void ft_end_node(struct ft_cxt *cxt)
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{
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ft_put_word(cxt, OF_DT_END_NODE);
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}
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void ft_nop(struct ft_cxt *cxt)
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{
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ft_put_word(cxt, OF_DT_NOP);
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}
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static int lookup_string(struct ft_cxt *cxt, const char *name)
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{
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u8 *p;
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p = cxt->p;
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while (p < cxt->p_end) {
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if (strcmp((char *)p, name) == 0)
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return p - cxt->p;
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p += strlen((char *)p) + 1;
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}
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return -1;
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}
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void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz)
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{
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int off = 0;
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off = lookup_string(cxt, name);
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if (off == -1) {
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memcpy(cxt->p_end, name, strlen(name) + 1);
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off = cxt->p_end - cxt->p;
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cxt->p_end += strlen(name) + 1;
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}
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/* now put offset from beginning of *STRUCTURE* */
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/* will be fixed up at the end */
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ft_put_word(cxt, OF_DT_PROP);
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ft_put_word(cxt, sz);
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ft_put_word(cxt, off);
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ft_put_bin(cxt, data, sz);
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}
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void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str)
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{
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ft_prop(cxt, name, str, strlen(str) + 1);
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}
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void ft_prop_int(struct ft_cxt *cxt, const char *name, int val)
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{
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u32 v = cpu_to_be32((u32) val);
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ft_prop(cxt, name, &v, sizeof(u32));
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}
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/* pick up and start working on a tree in place */
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void ft_init_cxt(struct ft_cxt *cxt, void *blob)
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{
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struct boot_param_header *bph = blob;
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memset(cxt, 0, sizeof(*cxt));
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cxt->bph = bph;
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bph->boot_cpuid_phys = CONFIG_OF_BOOT_CPU;
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/* find beginning and end of reserve map table (zeros in last entry) */
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cxt->p_rsvmap = (u8 *)bph + bph->off_mem_rsvmap;
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while ( ((uint64_t *)cxt->p_rsvmap)[0] != 0 &&
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((uint64_t *)cxt->p_rsvmap)[1] != 0 ) {
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cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
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}
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cxt->p_start = (u8 *)bph + bph->off_dt_struct;
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cxt->p_end = (u8 *)bph + bph->totalsize;
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cxt->p = (u8 *)bph + bph->off_dt_strings;
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}
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/* add a reserver physical area to the rsvmap */
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void ft_add_rsvmap(struct ft_cxt *cxt, u64 physstart, u64 physend)
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{
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memmove(cxt->p_rsvmap + SIZE_OF_RSVMAP_ENTRY, cxt->p_rsvmap,
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cxt->p_end - cxt->p_rsvmap);
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((u64 *)cxt->p_rsvmap)[0] = cpu_to_be64(physstart);
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((u64 *)cxt->p_rsvmap)[1] = cpu_to_be64(physend);
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((u64 *)cxt->p_rsvmap)[2] = 0;
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((u64 *)cxt->p_rsvmap)[3] = 0;
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cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
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cxt->p_start += SIZE_OF_RSVMAP_ENTRY;
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cxt->p += SIZE_OF_RSVMAP_ENTRY;
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cxt->p_end += SIZE_OF_RSVMAP_ENTRY;
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}
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void ft_end_tree(struct ft_cxt *cxt)
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{
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ft_put_word(cxt, OF_DT_END);
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}
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/* update the boot param header with correct values */
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void ft_finalize_tree(struct ft_cxt *cxt) {
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struct boot_param_header *bph = cxt->bph;
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bph->totalsize = cxt->p_end - (u8 *)bph;
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bph->off_dt_struct = cxt->p_start - (u8 *)bph;
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bph->off_dt_strings = cxt->p - (u8 *)bph;
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bph->dt_strings_size = cxt->p_end - cxt->p;
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}
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static int is_printable_string(const void *data, int len)
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{
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const char *s = data;
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const char *ss;
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/* zero length is not */
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if (len == 0)
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return 0;
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/* must terminate with zero */
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if (s[len - 1] != '\0')
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return 0;
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ss = s;
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while (*s && isprint(*s))
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s++;
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/* not zero, or not done yet */
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if (*s != '\0' || (s + 1 - ss) < len)
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return 0;
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return 1;
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}
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static void print_data(const void *data, int len)
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{
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int i;
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const u8 *s;
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/* no data, don't print */
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if (len == 0)
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return;
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if (is_printable_string(data, len)) {
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puts(" = \"");
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puts(data);
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puts("\"");
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return;
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}
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switch (len) {
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case 1: /* byte */
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printf(" = <%02x>", (*(u8 *) data) & 0xff);
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break;
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case 2: /* half-word */
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printf(" = <%04x>", be16_to_cpu(*(u16 *) data) & 0xffff);
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break;
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case 4: /* word */
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printf(" = <%x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
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break;
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case 8: /* double-word */
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printf(" = <%qx>", be64_to_cpu(*(uint64_t *) data));
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break;
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default: /* anything else... hexdump */
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printf(" = [");
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for (i = 0, s = data; i < len; i++)
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printf("%02x%s", s[i], i < len - 1 ? " " : "");
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printf("]");
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break;
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}
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}
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void ft_dump_blob(const void *bphp)
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{
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const struct boot_param_header *bph = bphp;
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const uint64_t *p_rsvmap = (const uint64_t *)
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((const char *)bph + be32_to_cpu(bph->off_mem_rsvmap));
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const u32 *p_struct = (const u32 *)
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((const char *)bph + be32_to_cpu(bph->off_dt_struct));
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const u32 *p_strings = (const u32 *)
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((const char *)bph + be32_to_cpu(bph->off_dt_strings));
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u32 tag;
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const u32 *p;
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const char *s, *t;
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int depth, sz, shift;
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int i;
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uint64_t addr, size;
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if (be32_to_cpu(bph->magic) != OF_DT_HEADER) {
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/* not valid tree */
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return;
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}
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depth = 0;
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shift = 4;
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for (i = 0;; i++) {
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addr = be64_to_cpu(p_rsvmap[i * 2]);
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size = be64_to_cpu(p_rsvmap[i * 2 + 1]);
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if (addr == 0 && size == 0)
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break;
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printf("/memreserve/ %qx %qx;\n", addr, size);
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}
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p = p_struct;
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while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
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/* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
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if (tag == OF_DT_BEGIN_NODE) {
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s = (const char *)p;
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p = (u32 *) _ALIGN((unsigned long)p + strlen(s) + 1, 4);
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printf("%*s%s {\n", depth * shift, "", s);
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depth++;
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continue;
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}
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if (tag == OF_DT_END_NODE) {
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depth--;
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printf("%*s};\n", depth * shift, "");
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continue;
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}
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if (tag == OF_DT_NOP) {
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printf("%*s[NOP]\n", depth * shift, "");
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continue;
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}
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if (tag != OF_DT_PROP) {
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fprintf(stderr, "%*s ** Unknown tag 0x%08x at 0x%x\n",
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depth * shift, "", tag, --p);
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break;
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}
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sz = be32_to_cpu(*p++);
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s = (const char *)p_strings + be32_to_cpu(*p++);
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t = (const char *)p;
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p = (const u32 *)_ALIGN((unsigned long)p + sz, 4);
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printf("%*s%s", depth * shift, "", s);
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print_data(t, sz);
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printf(";\n");
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}
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}
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void ft_backtrack_node(struct ft_cxt *cxt)
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{
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int i = 4;
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while (be32_to_cpu(*(u32 *) (cxt->p - i)) != OF_DT_END_NODE)
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i += 4;
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memmove (cxt->p - i, cxt->p, cxt->p_end - cxt->p);
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cxt->p_end -= i;
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cxt->p -= i;
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}
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void *ft_get_prop(void *bphp, const char *propname, int *szp)
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{
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struct boot_param_header *bph = bphp;
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uint32_t *p_struct =
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(uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_struct));
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uint32_t *p_strings =
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(uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_strings));
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uint32_t version = be32_to_cpu(bph->version);
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uint32_t tag;
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uint32_t *p;
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char *s, *t;
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char *ss;
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int sz;
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static char path[256], prop[256];
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path[0] = '\0';
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p = p_struct;
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while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
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if (tag == OF_DT_BEGIN_NODE) {
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s = (char *)p;
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p = (uint32_t *) _ALIGN((unsigned long)p + strlen(s) +
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1, 4);
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strcat(path, s);
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strcat(path, "/");
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continue;
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}
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if (tag == OF_DT_END_NODE) {
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path[strlen(path) - 1] = '\0';
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ss = strrchr(path, '/');
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if (ss != NULL)
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ss[1] = '\0';
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continue;
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}
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if (tag == OF_DT_NOP)
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continue;
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if (tag != OF_DT_PROP)
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break;
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sz = be32_to_cpu(*p++);
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s = (char *)p_strings + be32_to_cpu(*p++);
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if (version < 0x10 && sz >= 8)
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p = (uint32_t *) _ALIGN((unsigned long)p, 8);
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t = (char *)p;
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p = (uint32_t *) _ALIGN((unsigned long)p + sz, 4);
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strcpy(prop, path);
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strcat(prop, s);
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if (strcmp(prop, propname) == 0) {
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*szp = sz;
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return t;
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}
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}
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return NULL;
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}
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/********************************************************************/
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/* Function that returns a character from the environment */
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extern uchar(*env_get_char) (int);
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#define BDM(x) { .name = #x, .offset = offsetof(bd_t, bi_ ##x ) }
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#ifdef CONFIG_OF_HAS_BD_T
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static const struct {
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const char *name;
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int offset;
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} bd_map[] = {
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BDM(memstart),
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BDM(memsize),
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BDM(flashstart),
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BDM(flashsize),
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BDM(flashoffset),
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BDM(sramstart),
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BDM(sramsize),
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#if defined(CONFIG_5xx) || defined(CONFIG_8xx) || defined(CONFIG_8260) \
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|| defined(CONFIG_E500)
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BDM(immr_base),
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#endif
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#if defined(CONFIG_MPC5xxx)
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BDM(mbar_base),
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#endif
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#if defined(CONFIG_MPC83XX)
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BDM(immrbar),
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#endif
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#if defined(CONFIG_MPC8220)
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BDM(mbar_base),
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BDM(inpfreq),
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BDM(pcifreq),
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BDM(pevfreq),
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BDM(flbfreq),
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BDM(vcofreq),
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#endif
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BDM(bootflags),
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BDM(ip_addr),
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BDM(intfreq),
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BDM(busfreq),
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#ifdef CONFIG_CPM2
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BDM(cpmfreq),
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BDM(brgfreq),
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BDM(sccfreq),
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BDM(vco),
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#endif
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#if defined(CONFIG_MPC5xxx)
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BDM(ipbfreq),
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BDM(pcifreq),
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#endif
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BDM(baudrate),
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};
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#endif
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void ft_setup(void *blob, bd_t * bd, ulong initrd_start, ulong initrd_end)
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{
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u32 *p;
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int len;
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struct ft_cxt cxt;
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ulong clock;
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#if defined(CONFIG_OF_HAS_UBOOT_ENV)
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int k, nxt;
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#endif
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#if defined(CONFIG_OF_HAS_BD_T)
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u8 *end;
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#endif
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#if defined(CONFIG_OF_HAS_UBOOT_ENV) || defined(CONFIG_OF_HAS_BD_T)
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int i;
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static char tmpenv[256];
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#endif
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/* disable OF tree; booting old kernel */
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if (getenv("disable_of") != NULL) {
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memcpy(blob, bd, sizeof(*bd));
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return;
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}
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#ifdef DEBUG
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printf ("recieved oftree\n");
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ft_dump_blob(blob);
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#endif
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ft_init_cxt(&cxt, blob);
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if (initrd_start && initrd_end)
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ft_add_rsvmap(&cxt, initrd_start, initrd_end - initrd_start + 1);
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/* back into root */
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ft_backtrack_node(&cxt);
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#ifdef CONFIG_OF_HAS_UBOOT_ENV
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ft_begin_node(&cxt, "u-boot-env");
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for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
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char *s, *lval, *rval;
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for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) ;
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s = tmpenv;
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for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
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*s++ = env_get_char(k);
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*s++ = '\0';
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lval = tmpenv;
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s = strchr(tmpenv, '=');
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if (s != NULL) {
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*s++ = '\0';
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rval = s;
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} else
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continue;
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ft_prop_str(&cxt, lval, rval);
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}
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ft_end_node(&cxt);
|
|
#endif
|
|
|
|
ft_begin_node(&cxt, "chosen");
|
|
ft_prop_str(&cxt, "name", "chosen");
|
|
|
|
ft_prop_str(&cxt, "bootargs", getenv("bootargs"));
|
|
ft_prop_int(&cxt, "linux,platform", 0x600); /* what is this? */
|
|
if (initrd_start && initrd_end) {
|
|
ft_prop_int(&cxt, "linux,initrd-start", initrd_start);
|
|
ft_prop_int(&cxt, "linux,initrd-end", initrd_end);
|
|
}
|
|
#ifdef OF_STDOUT_PATH
|
|
ft_prop_str(&cxt, "linux,stdout-path", OF_STDOUT_PATH);
|
|
#endif
|
|
|
|
ft_end_node(&cxt);
|
|
|
|
ft_end_node(&cxt); /* end root */
|
|
|
|
ft_end_tree(&cxt);
|
|
ft_finalize_tree(&cxt);
|
|
|
|
#ifdef CONFIG_OF_HAS_BD_T
|
|
/* paste the bd_t at the end of the flat tree */
|
|
end = (char *)blob +
|
|
be32_to_cpu(((struct boot_param_header *)blob)->totalsize);
|
|
memcpy(end, bd, sizeof(*bd));
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC
|
|
|
|
#ifdef CONFIG_OF_HAS_BD_T
|
|
for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
|
|
uint32_t v;
|
|
|
|
sprintf(tmpenv, "/bd_t/%s", bd_map[i].name);
|
|
v = *(uint32_t *)((char *)bd + bd_map[i].offset);
|
|
|
|
p = ft_get_prop(blob, tmpenv, &len);
|
|
if (p != NULL)
|
|
*p = cpu_to_be32(v);
|
|
}
|
|
|
|
p = ft_get_prop(blob, "/bd_t/enetaddr", &len);
|
|
if (p != NULL)
|
|
memcpy(p, bd->bi_enetaddr, 6);
|
|
|
|
p = ft_get_prop(blob, "/bd_t/ethspeed", &len);
|
|
if (p != NULL)
|
|
*p = cpu_to_be32((uint32_t) bd->bi_ethspeed);
|
|
#endif
|
|
|
|
clock = bd->bi_intfreq;
|
|
p = ft_get_prop(blob, "/cpus/" OF_CPU "/clock-frequency", &len);
|
|
if (p != NULL)
|
|
*p = cpu_to_be32(clock);
|
|
|
|
#ifdef OF_TBCLK
|
|
clock = OF_TBCLK;
|
|
p = ft_get_prop(blob, "/cpus/" OF_CPU "/timebase-frequency", &len);
|
|
if (p != NULL)
|
|
*p = cpu_to_be32(clock);
|
|
#endif
|
|
#endif /* __powerpc__ */
|
|
|
|
#ifdef CONFIG_OF_BOARD_SETUP
|
|
ft_board_setup(blob, bd);
|
|
#endif
|
|
|
|
/* in case the size changed in the platform code */
|
|
ft_finalize_tree(&cxt);
|
|
|
|
#ifdef DEBUG
|
|
printf("final OF-tree\n");
|
|
ft_dump_blob(blob);
|
|
#endif
|
|
}
|
|
#endif
|