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-rw-r--r--scripts/dtc/flattree.c105
1 files changed, 56 insertions, 49 deletions
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
index bd99fa2d33..8d268fb785 100644
--- a/scripts/dtc/flattree.c
+++ b/scripts/dtc/flattree.c
@@ -49,7 +49,7 @@ static struct version_info {
struct emitter {
void (*cell)(void *, cell_t);
- void (*string)(void *, char *, int);
+ void (*string)(void *, const char *, int);
void (*align)(void *, int);
void (*data)(void *, struct data);
void (*beginnode)(void *, struct label *labels);
@@ -64,7 +64,7 @@ static void bin_emit_cell(void *e, cell_t val)
*dtbuf = data_append_cell(*dtbuf, val);
}
-static void bin_emit_string(void *e, char *str, int len)
+static void bin_emit_string(void *e, const char *str, int len)
{
struct data *dtbuf = e;
@@ -144,22 +144,14 @@ static void asm_emit_cell(void *e, cell_t val)
(val >> 8) & 0xff, val & 0xff);
}
-static void asm_emit_string(void *e, char *str, int len)
+static void asm_emit_string(void *e, const char *str, int len)
{
FILE *f = e;
- char c = 0;
- if (len != 0) {
- /* XXX: ewww */
- c = str[len];
- str[len] = '\0';
- }
-
- fprintf(f, "\t.string\t\"%s\"\n", str);
-
- if (len != 0) {
- str[len] = c;
- }
+ if (len != 0)
+ fprintf(f, "\t.string\t\"%.*s\"\n", len, str);
+ else
+ fprintf(f, "\t.string\t\"%s\"\n", str);
}
static void asm_emit_align(void *e, int a)
@@ -179,7 +171,7 @@ static void asm_emit_data(void *e, struct data d)
emit_offset_label(f, m->ref, m->offset);
while ((d.len - off) >= sizeof(uint32_t)) {
- asm_emit_cell(e, fdt32_to_cpu(*((uint32_t *)(d.val+off))));
+ asm_emit_cell(e, fdt32_to_cpu(*((fdt32_t *)(d.val+off))));
off += sizeof(uint32_t);
}
@@ -318,17 +310,16 @@ static struct data flatten_reserve_list(struct reserve_info *reservelist,
{
struct reserve_info *re;
struct data d = empty_data;
- static struct fdt_reserve_entry null_re = {0,0};
int j;
for (re = reservelist; re; re = re->next) {
- d = data_append_re(d, &re->re);
+ d = data_append_re(d, re->address, re->size);
}
/*
* Add additional reserved slots if the user asked for them.
*/
for (j = 0; j < reservenum; j++) {
- d = data_append_re(d, &null_re);
+ d = data_append_re(d, 0, 0);
}
return d;
@@ -366,7 +357,7 @@ static void make_fdt_header(struct fdt_header *fdt,
fdt->size_dt_struct = cpu_to_fdt32(dtsize);
}
-void dt_to_blob(FILE *f, struct boot_info *bi, int version)
+void dt_to_blob(FILE *f, struct dt_info *dti, int version)
{
struct version_info *vi = NULL;
int i;
@@ -384,29 +375,36 @@ void dt_to_blob(FILE *f, struct boot_info *bi, int version)
if (!vi)
die("Unknown device tree blob version %d\n", version);
- flatten_tree(bi->dt, &bin_emitter, &dtbuf, &strbuf, vi);
+ flatten_tree(dti->dt, &bin_emitter, &dtbuf, &strbuf, vi);
bin_emit_cell(&dtbuf, FDT_END);
- reservebuf = flatten_reserve_list(bi->reservelist, vi);
+ reservebuf = flatten_reserve_list(dti->reservelist, vi);
/* Make header */
make_fdt_header(&fdt, vi, reservebuf.len, dtbuf.len, strbuf.len,
- bi->boot_cpuid_phys);
+ dti->boot_cpuid_phys);
/*
* If the user asked for more space than is used, adjust the totalsize.
*/
if (minsize > 0) {
padlen = minsize - fdt32_to_cpu(fdt.totalsize);
- if ((padlen < 0) && (quiet < 1))
- fprintf(stderr,
- "Warning: blob size %d >= minimum size %d\n",
- fdt32_to_cpu(fdt.totalsize), minsize);
+ if (padlen < 0) {
+ padlen = 0;
+ if (quiet < 1)
+ fprintf(stderr,
+ "Warning: blob size %d >= minimum size %d\n",
+ fdt32_to_cpu(fdt.totalsize), minsize);
+ }
}
if (padsize > 0)
padlen = padsize;
+ if (alignsize > 0)
+ padlen = ALIGN(fdt32_to_cpu(fdt.totalsize) + padlen, alignsize)
+ - fdt32_to_cpu(fdt.totalsize);
+
if (padlen > 0) {
int tsize = fdt32_to_cpu(fdt.totalsize);
tsize += padlen;
@@ -460,7 +458,7 @@ static void dump_stringtable_asm(FILE *f, struct data strbuf)
}
}
-void dt_to_asm(FILE *f, struct boot_info *bi, int version)
+void dt_to_asm(FILE *f, struct dt_info *dti, int version)
{
struct version_info *vi = NULL;
int i;
@@ -500,7 +498,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
if (vi->flags & FTF_BOOTCPUID) {
fprintf(f, "\t/* boot_cpuid_phys */\n");
- asm_emit_cell(f, bi->boot_cpuid_phys);
+ asm_emit_cell(f, dti->boot_cpuid_phys);
}
if (vi->flags & FTF_STRTABSIZE) {
@@ -530,18 +528,18 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
* Use .long on high and low halfs of u64s to avoid .quad
* as it appears .quad isn't available in some assemblers.
*/
- for (re = bi->reservelist; re; re = re->next) {
+ for (re = dti->reservelist; re; re = re->next) {
struct label *l;
for_each_label(re->labels, l) {
fprintf(f, "\t.globl\t%s\n", l->label);
fprintf(f, "%s:\n", l->label);
}
- ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.address >> 32));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->address >> 32));
ASM_EMIT_BELONG(f, "0x%08x",
- (unsigned int)(re->re.address & 0xffffffff));
- ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size >> 32));
- ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size & 0xffffffff));
+ (unsigned int)(re->address & 0xffffffff));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size >> 32));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size & 0xffffffff));
}
for (i = 0; i < reservenum; i++) {
fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
@@ -550,7 +548,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
emit_label(f, symprefix, "struct_start");
- flatten_tree(bi->dt, &asm_emitter, f, &strbuf, vi);
+ flatten_tree(dti->dt, &asm_emitter, f, &strbuf, vi);
fprintf(f, "\t/* FDT_END */\n");
asm_emit_cell(f, FDT_END);
@@ -572,6 +570,8 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
if (padsize > 0) {
fprintf(f, "\t.space\t%d, 0\n", padsize);
}
+ if (alignsize > 0)
+ asm_emit_align(f, alignsize);
emit_label(f, symprefix, "blob_abs_end");
data_free(strbuf);
@@ -600,7 +600,7 @@ static void flat_read_chunk(struct inbuf *inb, void *p, int len)
static uint32_t flat_read_word(struct inbuf *inb)
{
- uint32_t val;
+ fdt32_t val;
assert(((inb->ptr - inb->base) % sizeof(val)) == 0);
@@ -709,13 +709,15 @@ static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
* First pass, count entries.
*/
while (1) {
+ uint64_t address, size;
+
flat_read_chunk(inb, &re, sizeof(re));
- re.address = fdt64_to_cpu(re.address);
- re.size = fdt64_to_cpu(re.size);
- if (re.size == 0)
+ address = fdt64_to_cpu(re.address);
+ size = fdt64_to_cpu(re.size);
+ if (size == 0)
break;
- new = build_reserve_entry(re.address, re.size);
+ new = build_reserve_entry(address, size);
reservelist = add_reserve_entry(reservelist, new);
}
@@ -729,7 +731,7 @@ static char *nodename_from_path(const char *ppath, const char *cpath)
plen = strlen(ppath);
- if (!strneq(ppath, cpath, plen))
+ if (!strstarts(cpath, ppath))
die("Path \"%s\" is not valid as a child of \"%s\"\n",
cpath, ppath);
@@ -797,13 +799,18 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
}
} while (val != FDT_END_NODE);
+ if (node->name != flatname) {
+ free(flatname);
+ }
+
return node;
}
-struct boot_info *dt_from_blob(const char *fname)
+struct dt_info *dt_from_blob(const char *fname)
{
FILE *f;
+ fdt32_t magic_buf, totalsize_buf;
uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
uint32_t off_dt, off_str, off_mem_rsvmap;
int rc;
@@ -820,7 +827,7 @@ struct boot_info *dt_from_blob(const char *fname)
f = srcfile_relative_open(fname, NULL);
- rc = fread(&magic, sizeof(magic), 1, f);
+ rc = fread(&magic_buf, sizeof(magic_buf), 1, f);
if (ferror(f))
die("Error reading DT blob magic number: %s\n",
strerror(errno));
@@ -831,11 +838,11 @@ struct boot_info *dt_from_blob(const char *fname)
die("Mysterious short read reading magic number\n");
}
- magic = fdt32_to_cpu(magic);
+ magic = fdt32_to_cpu(magic_buf);
if (magic != FDT_MAGIC)
die("Blob has incorrect magic number\n");
- rc = fread(&totalsize, sizeof(totalsize), 1, f);
+ rc = fread(&totalsize_buf, sizeof(totalsize_buf), 1, f);
if (ferror(f))
die("Error reading DT blob size: %s\n", strerror(errno));
if (rc < 1) {
@@ -845,7 +852,7 @@ struct boot_info *dt_from_blob(const char *fname)
die("Mysterious short read reading blob size\n");
}
- totalsize = fdt32_to_cpu(totalsize);
+ totalsize = fdt32_to_cpu(totalsize_buf);
if (totalsize < FDT_V1_SIZE)
die("DT blob size (%d) is too small\n", totalsize);
@@ -889,7 +896,7 @@ struct boot_info *dt_from_blob(const char *fname)
if (version >= 3) {
uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
- if (off_str+size_str > totalsize)
+ if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
die("String table extends past total size\n");
inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
} else {
@@ -898,7 +905,7 @@ struct boot_info *dt_from_blob(const char *fname)
if (version >= 17) {
size_dt = fdt32_to_cpu(fdt->size_dt_struct);
- if (off_dt+size_dt > totalsize)
+ if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
die("Structure block extends past total size\n");
}
@@ -929,5 +936,5 @@ struct boot_info *dt_from_blob(const char *fname)
fclose(f);
- return build_boot_info(reservelist, tree, boot_cpuid_phys);
+ return build_dt_info(DTSF_V1, reservelist, tree, boot_cpuid_phys);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 10:54:39 +0000