+++ /dev/null
-/*
- * OF flat tree builder
- * Written by: Pantelis Antoniou <pantelis.antoniou@gmail.com>
- * Updated by: Matthew McClintock <msm@freescale.com>
- *
- * 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, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <environment.h>
-
-#ifdef CONFIG_OF_FLAT_TREE
-
-#include <asm/errno.h>
-#include <stddef.h>
-
-#include <ft_build.h>
-#include <linux/ctype.h>
-
-#undef DEBUG
-
-/* align addr on a size boundary - adjust address up if needed -- Cort */
-#define _ALIGN(addr,size) (((addr)+(size)-1)&(~((size)-1)))
-#ifndef CONFIG_OF_BOOT_CPU
-#define CONFIG_OF_BOOT_CPU 0
-#endif
-#define SIZE_OF_RSVMAP_ENTRY (2*sizeof(u64))
-
-static void ft_put_word(struct ft_cxt *cxt, u32 v)
-{
- memmove(cxt->p + sizeof(u32), cxt->p, cxt->p_end - cxt->p);
-
- *(u32 *) cxt->p = cpu_to_be32(v);
- cxt->p += sizeof(u32);
- cxt->p_end += sizeof(u32);
-}
-
-static inline void ft_put_bin(struct ft_cxt *cxt, const void *data, int sz)
-{
- int aligned_size = ((u8 *)_ALIGN((unsigned long)cxt->p + sz,
- sizeof(u32))) - cxt->p;
-
- memmove(cxt->p + aligned_size, cxt->p, cxt->p_end - cxt->p);
-
- /* make sure the last bytes are zeroed */
- memset(cxt->p + aligned_size - (aligned_size % sizeof(u32)), 0,
- (aligned_size % sizeof(u32)));
-
- memcpy(cxt->p, data, sz);
-
- cxt->p += aligned_size;
- cxt->p_end += aligned_size;
-}
-
-void ft_begin_node(struct ft_cxt *cxt, const char *name)
-{
- ft_put_word(cxt, OF_DT_BEGIN_NODE);
- ft_put_bin(cxt, name, strlen(name) + 1);
-}
-
-void ft_end_node(struct ft_cxt *cxt)
-{
- ft_put_word(cxt, OF_DT_END_NODE);
-}
-
-void ft_nop(struct ft_cxt *cxt)
-{
- ft_put_word(cxt, OF_DT_NOP);
-}
-
-static int lookup_string(struct ft_cxt *cxt, const char *name)
-{
- u8 *p;
-
- p = cxt->p;
- while (p < cxt->p_end) {
- if (strcmp((char *)p, name) == 0)
- return p - cxt->p;
- p += strlen((char *)p) + 1;
- }
-
- return -1;
-}
-
-void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz)
-{
- int off = 0;
-
- off = lookup_string(cxt, name);
- if (off == -1) {
- memcpy(cxt->p_end, name, strlen(name) + 1);
- off = cxt->p_end - cxt->p;
- cxt->p_end += strlen(name) + 1;
- }
-
- /* now put offset from beginning of *STRUCTURE* */
- /* will be fixed up at the end */
- ft_put_word(cxt, OF_DT_PROP);
- ft_put_word(cxt, sz);
- ft_put_word(cxt, off);
- ft_put_bin(cxt, data, sz);
-}
-
-void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str)
-{
- ft_prop(cxt, name, str, strlen(str) + 1);
-}
-
-void ft_prop_int(struct ft_cxt *cxt, const char *name, int val)
-{
- u32 v = cpu_to_be32((u32) val);
-
- ft_prop(cxt, name, &v, sizeof(u32));
-}
-
-/* pick up and start working on a tree in place */
-void ft_init_cxt(struct ft_cxt *cxt, void *blob)
-{
- struct boot_param_header *bph = blob;
-
- memset(cxt, 0, sizeof(*cxt));
-
- cxt->bph = bph;
- bph->boot_cpuid_phys = CONFIG_OF_BOOT_CPU;
-
- /* find beginning and end of reserve map table (zeros in last entry) */
- cxt->p_rsvmap = (u8 *)bph + bph->off_mem_rsvmap;
- while ( ((uint64_t *)cxt->p_rsvmap)[0] != 0 &&
- ((uint64_t *)cxt->p_rsvmap)[1] != 0 ) {
- cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
- }
-
- cxt->p_start = (u8 *)bph + bph->off_dt_struct;
- cxt->p_end = (u8 *)bph + bph->totalsize;
- cxt->p = (u8 *)bph + bph->off_dt_strings;
-}
-
-/* add a reserver physical area to the rsvmap */
-void ft_add_rsvmap(struct ft_cxt *cxt, u64 physstart, u64 physend)
-{
- memmove(cxt->p_rsvmap + SIZE_OF_RSVMAP_ENTRY, cxt->p_rsvmap,
- cxt->p_end - cxt->p_rsvmap);
-
- ((u64 *)cxt->p_rsvmap)[0] = cpu_to_be64(physstart);
- ((u64 *)cxt->p_rsvmap)[1] = cpu_to_be64(physend);
- ((u64 *)cxt->p_rsvmap)[2] = 0;
- ((u64 *)cxt->p_rsvmap)[3] = 0;
-
- cxt->p_rsvmap += SIZE_OF_RSVMAP_ENTRY;
- cxt->p_start += SIZE_OF_RSVMAP_ENTRY;
- cxt->p += SIZE_OF_RSVMAP_ENTRY;
- cxt->p_end += SIZE_OF_RSVMAP_ENTRY;
-}
-
-void ft_end_tree(struct ft_cxt *cxt)
-{
- ft_put_word(cxt, OF_DT_END);
-}
-
-/* update the boot param header with correct values */
-void ft_finalize_tree(struct ft_cxt *cxt) {
- struct boot_param_header *bph = cxt->bph;
-
- bph->totalsize = cxt->p_end - (u8 *)bph;
- bph->off_dt_struct = cxt->p_start - (u8 *)bph;
- bph->off_dt_strings = cxt->p - (u8 *)bph;
- bph->dt_strings_size = cxt->p_end - cxt->p;
-}
-
-static int is_printable_string(const void *data, int len)
-{
- const char *s = data;
- const char *ss;
-
- /* zero length is not */
- if (len == 0)
- return 0;
-
- /* must terminate with zero */
- if (s[len - 1] != '\0')
- return 0;
-
- ss = s;
- while (*s && isprint(*s))
- s++;
-
- /* not zero, or not done yet */
- if (*s != '\0' || (s + 1 - ss) < len)
- return 0;
-
- return 1;
-}
-
-static void print_data(const void *data, int len)
-{
- int i;
- const u8 *s;
-
- /* no data, don't print */
- if (len == 0)
- return;
-
- if (is_printable_string(data, len)) {
- puts(" = \"");
- puts(data);
- puts("\"");
- return;
- }
-
- switch (len) {
- case 1: /* byte */
- printf(" = <%02x>", (*(u8 *) data) & 0xff);
- break;
- case 2: /* half-word */
- printf(" = <%04x>", be16_to_cpu(*(u16 *) data) & 0xffff);
- break;
- case 4: /* word */
- printf(" = <%x>", be32_to_cpu(*(u32 *) data) & 0xffffffffU);
- break;
- case 8: /* double-word */
- printf(" = <%qx>", be64_to_cpu(*(uint64_t *) data));
- break;
- default: /* anything else... hexdump */
- printf(" = [");
- for (i = 0, s = data; i < len; i++)
- printf("%02x%s", s[i], i < len - 1 ? " " : "");
- printf("]");
-
- break;
- }
-}
-
-void ft_dump_blob(const void *bphp)
-{
- const struct boot_param_header *bph = bphp;
- const uint64_t *p_rsvmap = (const uint64_t *)
- ((const char *)bph + be32_to_cpu(bph->off_mem_rsvmap));
- const u32 *p_struct = (const u32 *)
- ((const char *)bph + be32_to_cpu(bph->off_dt_struct));
- const u32 *p_strings = (const u32 *)
- ((const char *)bph + be32_to_cpu(bph->off_dt_strings));
- u32 tag;
- const u32 *p;
- const char *s, *t;
- int depth, sz, shift;
- int i;
- uint64_t addr, size;
-
- if (be32_to_cpu(bph->magic) != OF_DT_HEADER) {
- /* not valid tree */
- return;
- }
-
- depth = 0;
- shift = 4;
-
- for (i = 0;; i++) {
- addr = be64_to_cpu(p_rsvmap[i * 2]);
- size = be64_to_cpu(p_rsvmap[i * 2 + 1]);
- if (addr == 0 && size == 0)
- break;
-
- printf("/memreserve/ %qx %qx;\n", addr, size);
- }
-
- p = p_struct;
- while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
-
- /* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
-
- if (tag == OF_DT_BEGIN_NODE) {
- s = (const char *)p;
- p = (u32 *) _ALIGN((unsigned long)p + strlen(s) + 1, 4);
-
- printf("%*s%s {\n", depth * shift, "", s);
-
- depth++;
- continue;
- }
-
- if (tag == OF_DT_END_NODE) {
- depth--;
-
- printf("%*s};\n", depth * shift, "");
- continue;
- }
-
- if (tag == OF_DT_NOP) {
- printf("%*s[NOP]\n", depth * shift, "");
- continue;
- }
-
- if (tag != OF_DT_PROP) {
- fprintf(stderr, "%*s ** Unknown tag 0x%08x at 0x%x\n",
- depth * shift, "", tag, --p);
- break;
- }
- sz = be32_to_cpu(*p++);
- s = (const char *)p_strings + be32_to_cpu(*p++);
- t = (const char *)p;
- p = (const u32 *)_ALIGN((unsigned long)p + sz, 4);
- printf("%*s%s", depth * shift, "", s);
- print_data(t, sz);
- printf(";\n");
- }
-}
-
-void ft_backtrack_node(struct ft_cxt *cxt)
-{
- int i = 4;
-
- while (be32_to_cpu(*(u32 *) (cxt->p - i)) != OF_DT_END_NODE)
- i += 4;
-
- memmove (cxt->p - i, cxt->p, cxt->p_end - cxt->p);
-
- cxt->p_end -= i;
- cxt->p -= i;
-}
-
-void *ft_get_prop(void *bphp, const char *propname, int *szp)
-{
- struct boot_param_header *bph = bphp;
- uint32_t *p_struct =
- (uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_struct));
- uint32_t *p_strings =
- (uint32_t *) ((char *)bph + be32_to_cpu(bph->off_dt_strings));
- uint32_t version = be32_to_cpu(bph->version);
- uint32_t tag;
- uint32_t *p;
- char *s, *t;
- char *ss;
- int sz;
- static char path[256], prop[256];
-
- path[0] = '\0';
-
- p = p_struct;
- while ((tag = be32_to_cpu(*p++)) != OF_DT_END) {
-
- if (tag == OF_DT_BEGIN_NODE) {
- s = (char *)p;
- p = (uint32_t *) _ALIGN((unsigned long)p + strlen(s) +
- 1, 4);
- strcat(path, s);
- strcat(path, "/");
- continue;
- }
-
- if (tag == OF_DT_END_NODE) {
- path[strlen(path) - 1] = '\0';
- ss = strrchr(path, '/');
- if (ss != NULL)
- ss[1] = '\0';
- continue;
- }
-
- if (tag == OF_DT_NOP)
- continue;
-
- if (tag != OF_DT_PROP)
- break;
-
- sz = be32_to_cpu(*p++);
- s = (char *)p_strings + be32_to_cpu(*p++);
- if (version < 0x10 && sz >= 8)
- p = (uint32_t *) _ALIGN((unsigned long)p, 8);
- t = (char *)p;
- p = (uint32_t *) _ALIGN((unsigned long)p + sz, 4);
-
- strcpy(prop, path);
- strcat(prop, s);
-
- if (strcmp(prop, propname) == 0) {
- *szp = sz;
- return t;
- }
- }
-
- return NULL;
-}
-
-/********************************************************************/
-
-void ft_setup(void *blob, bd_t * bd, ulong initrd_start, ulong initrd_end)
-{
- u32 *p;
- int len;
- struct ft_cxt cxt;
- ulong clock;
-
- /* disable OF tree; booting old kernel */
- if (getenv("disable_of") != NULL) {
- memcpy(blob, bd, sizeof(*bd));
- return;
- }
-
-#ifdef DEBUG
- printf ("recieved oftree\n");
- ft_dump_blob(blob);
-#endif
-
- ft_init_cxt(&cxt, blob);
-
- if (initrd_start && initrd_end)
- ft_add_rsvmap(&cxt, initrd_start, initrd_end - initrd_start + 1);
-
- /* back into root */
- ft_backtrack_node(&cxt);
-
- 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_PPC
- 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
+++ /dev/null
-/*
- * OF Flat tree builder
- *
- */
-
-#ifndef FT_BUILD_H
-#define FT_BUILD_H
-
-#include <linux/types.h>
-#include <asm/u-boot.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_cxt {
- struct boot_param_header *bph;
- u8 *p_rsvmap;
- u8 *p_start; /* pointer to beginning of dt_struct */
- u8 *p_end; /* pointer to end of dt_strings */
- u8 *p; /* pointer to end of dt_struct and beginning of dt_strings */
-};
-
-void ft_begin_node(struct ft_cxt *cxt, const char *name);
-void ft_init_cxt(struct ft_cxt *cxt, void *blob);
-void ft_end_node(struct ft_cxt *cxt);
-
-void ft_end_tree(struct ft_cxt *cxt);
-void ft_finalize_tree(struct ft_cxt *cxt);
-
-void ft_nop(struct ft_cxt *cxt);
-void ft_prop(struct ft_cxt *cxt, const char *name, const void *data, int sz);
-void ft_prop_str(struct ft_cxt *cxt, const char *name, const char *str);
-void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
-void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
-void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
-
-void ft_setup(void *blob, bd_t * bd, ulong initrd_start, ulong initrd_end);
-
-void ft_dump_blob(const void *bphp);
-void ft_merge_blob(struct ft_cxt *cxt, void *blob);
-void *ft_get_prop(void *bphp, const char *propname, int *szp);
-
-#ifdef CONFIG_OF_BOARD_SETUP
-void ft_board_setup(void *blob, bd_t *bd);
-void ft_cpu_setup(void *blob, bd_t *bd);
-void ft_pci_setup(void *blob, bd_t *bd);
-#endif
-
-#endif
projects / kernel / u-boot.git / commitdiff