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Diffstat (limited to 'scripts/dtc/flattree.c')
-rw-r--r--scripts/dtc/flattree.c192
1 files changed, 109 insertions, 83 deletions
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
index 76acd28c068..ead0332c87e 100644
--- a/scripts/dtc/flattree.c
+++ b/scripts/dtc/flattree.c
@@ -52,9 +52,9 @@ struct emitter {
void (*string)(void *, char *, int);
void (*align)(void *, int);
void (*data)(void *, struct data);
- void (*beginnode)(void *, const char *);
- void (*endnode)(void *, const char *);
- void (*property)(void *, const char *);
+ void (*beginnode)(void *, struct label *labels);
+ void (*endnode)(void *, struct label *labels);
+ void (*property)(void *, struct label *labels);
};
static void bin_emit_cell(void *e, cell_t val)
@@ -89,17 +89,17 @@ static void bin_emit_data(void *e, struct data d)
*dtbuf = data_append_data(*dtbuf, d.val, d.len);
}
-static void bin_emit_beginnode(void *e, const char *label)
+static void bin_emit_beginnode(void *e, struct label *labels)
{
bin_emit_cell(e, FDT_BEGIN_NODE);
}
-static void bin_emit_endnode(void *e, const char *label)
+static void bin_emit_endnode(void *e, struct label *labels)
{
bin_emit_cell(e, FDT_END_NODE);
}
-static void bin_emit_property(void *e, const char *label)
+static void bin_emit_property(void *e, struct label *labels)
{
bin_emit_cell(e, FDT_PROP);
}
@@ -127,11 +127,21 @@ static void emit_offset_label(FILE *f, const char *label, int offset)
fprintf(f, "%s\t= . + %d\n", label, offset);
}
+#define ASM_EMIT_BELONG(f, fmt, ...) \
+ { \
+ fprintf((f), "\t.byte\t((" fmt ") >> 24) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t((" fmt ") >> 16) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t((" fmt ") >> 8) & 0xff\n", __VA_ARGS__); \
+ fprintf((f), "\t.byte\t(" fmt ") & 0xff\n", __VA_ARGS__); \
+ }
+
static void asm_emit_cell(void *e, cell_t val)
{
FILE *f = e;
- fprintf(f, "\t.long\t0x%x\n", val);
+ fprintf(f, "\t.byte 0x%02x; .byte 0x%02x; .byte 0x%02x; .byte 0x%02x\n",
+ (val >> 24) & 0xff, (val >> 16) & 0xff,
+ (val >> 8) & 0xff, val & 0xff);
}
static void asm_emit_string(void *e, char *str, int len)
@@ -156,7 +166,7 @@ static void asm_emit_align(void *e, int a)
{
FILE *f = e;
- fprintf(f, "\t.balign\t%d\n", a);
+ fprintf(f, "\t.balign\t%d, 0\n", a);
}
static void asm_emit_data(void *e, struct data d)
@@ -169,8 +179,7 @@ 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)) {
- fprintf(f, "\t.long\t0x%x\n",
- fdt32_to_cpu(*((uint32_t *)(d.val+off))));
+ asm_emit_cell(e, fdt32_to_cpu(*((uint32_t *)(d.val+off))));
off += sizeof(uint32_t);
}
@@ -182,37 +191,43 @@ static void asm_emit_data(void *e, struct data d)
assert(off == d.len);
}
-static void asm_emit_beginnode(void *e, const char *label)
+static void asm_emit_beginnode(void *e, struct label *labels)
{
FILE *f = e;
+ struct label *l;
- if (label) {
- fprintf(f, "\t.globl\t%s\n", label);
- fprintf(f, "%s:\n", label);
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
}
- fprintf(f, "\t.long\tFDT_BEGIN_NODE\n");
+ fprintf(f, "\t/* FDT_BEGIN_NODE */\n");
+ asm_emit_cell(e, FDT_BEGIN_NODE);
}
-static void asm_emit_endnode(void *e, const char *label)
+static void asm_emit_endnode(void *e, struct label *labels)
{
FILE *f = e;
+ struct label *l;
- fprintf(f, "\t.long\tFDT_END_NODE\n");
- if (label) {
- fprintf(f, "\t.globl\t%s_end\n", label);
- fprintf(f, "%s_end:\n", label);
+ fprintf(f, "\t/* FDT_END_NODE */\n");
+ asm_emit_cell(e, FDT_END_NODE);
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s_end\n", l->label);
+ fprintf(f, "%s_end:\n", l->label);
}
}
-static void asm_emit_property(void *e, const char *label)
+static void asm_emit_property(void *e, struct label *labels)
{
FILE *f = e;
+ struct label *l;
- if (label) {
- fprintf(f, "\t.globl\t%s\n", label);
- fprintf(f, "%s:\n", label);
+ for_each_label(labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
}
- fprintf(f, "\t.long\tFDT_PROP\n");
+ fprintf(f, "\t/* FDT_PROP */\n");
+ asm_emit_cell(e, FDT_PROP);
}
static struct emitter asm_emitter = {
@@ -248,7 +263,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit,
struct node *child;
int seen_name_prop = 0;
- emit->beginnode(etarget, tree->label);
+ emit->beginnode(etarget, tree->labels);
if (vi->flags & FTF_FULLPATH)
emit->string(etarget, tree->fullpath, 0);
@@ -265,7 +280,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit,
nameoff = stringtable_insert(strbuf, prop->name);
- emit->property(etarget, prop->label);
+ emit->property(etarget, prop->labels);
emit->cell(etarget, prop->val.len);
emit->cell(etarget, nameoff);
@@ -292,7 +307,7 @@ static void flatten_tree(struct node *tree, struct emitter *emit,
flatten_tree(child, emit, etarget, strbuf, vi);
}
- emit->endnode(etarget, tree->label);
+ emit->endnode(etarget, tree->labels);
}
static struct data flatten_reserve_list(struct reserve_info *reservelist,
@@ -413,10 +428,13 @@ void dt_to_blob(FILE *f, struct boot_info *bi, int version)
if (padlen > 0)
blob = data_append_zeroes(blob, padlen);
- fwrite(blob.val, blob.len, 1, f);
-
- if (ferror(f))
- die("Error writing device tree blob: %s\n", strerror(errno));
+ if (fwrite(blob.val, blob.len, 1, f) != 1) {
+ if (ferror(f))
+ die("Error writing device tree blob: %s\n",
+ strerror(errno));
+ else
+ die("Short write on device tree blob\n");
+ }
/*
* data_merge() frees the right-hand element so only the blob
@@ -455,39 +473,44 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
die("Unknown device tree blob version %d\n", version);
fprintf(f, "/* autogenerated by dtc, do not edit */\n\n");
- fprintf(f, "#define FDT_MAGIC 0x%x\n", FDT_MAGIC);
- fprintf(f, "#define FDT_BEGIN_NODE 0x%x\n", FDT_BEGIN_NODE);
- fprintf(f, "#define FDT_END_NODE 0x%x\n", FDT_END_NODE);
- fprintf(f, "#define FDT_PROP 0x%x\n", FDT_PROP);
- fprintf(f, "#define FDT_END 0x%x\n", FDT_END);
- fprintf(f, "\n");
emit_label(f, symprefix, "blob_start");
emit_label(f, symprefix, "header");
- fprintf(f, "\t.long\tFDT_MAGIC\t\t\t\t/* magic */\n");
- fprintf(f, "\t.long\t_%s_blob_abs_end - _%s_blob_start\t/* totalsize */\n",
- symprefix, symprefix);
- fprintf(f, "\t.long\t_%s_struct_start - _%s_blob_start\t/* off_dt_struct */\n",
+ fprintf(f, "\t/* magic */\n");
+ asm_emit_cell(f, FDT_MAGIC);
+ fprintf(f, "\t/* totalsize */\n");
+ ASM_EMIT_BELONG(f, "_%s_blob_abs_end - _%s_blob_start",
+ symprefix, symprefix);
+ fprintf(f, "\t/* off_dt_struct */\n");
+ ASM_EMIT_BELONG(f, "_%s_struct_start - _%s_blob_start",
symprefix, symprefix);
- fprintf(f, "\t.long\t_%s_strings_start - _%s_blob_start\t/* off_dt_strings */\n",
+ fprintf(f, "\t/* off_dt_strings */\n");
+ ASM_EMIT_BELONG(f, "_%s_strings_start - _%s_blob_start",
symprefix, symprefix);
- fprintf(f, "\t.long\t_%s_reserve_map - _%s_blob_start\t/* off_dt_strings */\n",
+ fprintf(f, "\t/* off_mem_rsvmap */\n");
+ ASM_EMIT_BELONG(f, "_%s_reserve_map - _%s_blob_start",
symprefix, symprefix);
- fprintf(f, "\t.long\t%d\t\t\t\t\t/* version */\n", vi->version);
- fprintf(f, "\t.long\t%d\t\t\t\t\t/* last_comp_version */\n",
- vi->last_comp_version);
-
- if (vi->flags & FTF_BOOTCPUID)
- fprintf(f, "\t.long\t%i\t\t\t\t\t/* boot_cpuid_phys */\n",
- bi->boot_cpuid_phys);
+ fprintf(f, "\t/* version */\n");
+ asm_emit_cell(f, vi->version);
+ fprintf(f, "\t/* last_comp_version */\n");
+ asm_emit_cell(f, vi->last_comp_version);
+
+ if (vi->flags & FTF_BOOTCPUID) {
+ fprintf(f, "\t/* boot_cpuid_phys */\n");
+ asm_emit_cell(f, bi->boot_cpuid_phys);
+ }
- if (vi->flags & FTF_STRTABSIZE)
- fprintf(f, "\t.long\t_%s_strings_end - _%s_strings_start\t/* size_dt_strings */\n",
- symprefix, symprefix);
+ if (vi->flags & FTF_STRTABSIZE) {
+ fprintf(f, "\t/* size_dt_strings */\n");
+ ASM_EMIT_BELONG(f, "_%s_strings_end - _%s_strings_start",
+ symprefix, symprefix);
+ }
- if (vi->flags & FTF_STRUCTSIZE)
- fprintf(f, "\t.long\t_%s_struct_end - _%s_struct_start\t/* size_dt_struct */\n",
+ if (vi->flags & FTF_STRUCTSIZE) {
+ fprintf(f, "\t/* size_dt_struct */\n");
+ ASM_EMIT_BELONG(f, "_%s_struct_end - _%s_struct_start",
symprefix, symprefix);
+ }
/*
* Reserve map entries.
@@ -505,16 +528,17 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
* as it appears .quad isn't available in some assemblers.
*/
for (re = bi->reservelist; re; re = re->next) {
- if (re->label) {
- fprintf(f, "\t.globl\t%s\n", re->label);
- fprintf(f, "%s:\n", re->label);
+ struct label *l;
+
+ for_each_label(re->labels, l) {
+ fprintf(f, "\t.globl\t%s\n", l->label);
+ fprintf(f, "%s:\n", l->label);
}
- fprintf(f, "\t.long\t0x%08x, 0x%08x\n",
- (unsigned int)(re->re.address >> 32),
- (unsigned int)(re->re.address & 0xffffffff));
- fprintf(f, "\t.long\t0x%08x, 0x%08x\n",
- (unsigned int)(re->re.size >> 32),
- (unsigned int)(re->re.size & 0xffffffff));
+ ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->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));
}
for (i = 0; i < reservenum; i++) {
fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
@@ -524,7 +548,9 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
emit_label(f, symprefix, "struct_start");
flatten_tree(bi->dt, &asm_emitter, f, &strbuf, vi);
- fprintf(f, "\t.long\tFDT_END\n");
+
+ fprintf(f, "\t/* FDT_END */\n");
+ asm_emit_cell(f, FDT_END);
emit_label(f, symprefix, "struct_end");
emit_label(f, symprefix, "strings_start");
@@ -601,7 +627,7 @@ static char *flat_read_string(struct inbuf *inb)
len++;
} while ((*p++) != '\0');
- str = strdup(inb->ptr);
+ str = xstrdup(inb->ptr);
inb->ptr += len;
@@ -643,7 +669,7 @@ static char *flat_read_stringtable(struct inbuf *inb, int offset)
p++;
}
- return strdup(inb->base + offset);
+ return xstrdup(inb->base + offset);
}
static struct property *flat_read_property(struct inbuf *dtbuf,
@@ -663,7 +689,7 @@ static struct property *flat_read_property(struct inbuf *dtbuf,
val = flat_read_data(dtbuf, proplen);
- return build_property(name, val, NULL);
+ return build_property(name, val);
}
@@ -688,7 +714,7 @@ static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
if (re.size == 0)
break;
- new = build_reserve_entry(re.address, re.size, NULL);
+ new = build_reserve_entry(re.address, re.size);
reservelist = add_reserve_entry(reservelist, new);
}
@@ -710,7 +736,7 @@ static char *nodename_from_path(const char *ppath, const char *cpath)
if (!streq(ppath, "/"))
plen++;
- return strdup(cpath + plen);
+ return xstrdup(cpath + plen);
}
static struct node *unflatten_tree(struct inbuf *dtbuf,
@@ -776,7 +802,7 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
struct boot_info *dt_from_blob(const char *fname)
{
- struct dtc_file *dtcf;
+ FILE *f;
uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
uint32_t off_dt, off_str, off_mem_rsvmap;
int rc;
@@ -791,14 +817,14 @@ struct boot_info *dt_from_blob(const char *fname)
uint32_t val;
int flags = 0;
- dtcf = dtc_open_file(fname, NULL);
+ f = srcfile_relative_open(fname, NULL);
- rc = fread(&magic, sizeof(magic), 1, dtcf->file);
- if (ferror(dtcf->file))
+ rc = fread(&magic, sizeof(magic), 1, f);
+ if (ferror(f))
die("Error reading DT blob magic number: %s\n",
strerror(errno));
if (rc < 1) {
- if (feof(dtcf->file))
+ if (feof(f))
die("EOF reading DT blob magic number\n");
else
die("Mysterious short read reading magic number\n");
@@ -808,11 +834,11 @@ struct boot_info *dt_from_blob(const char *fname)
if (magic != FDT_MAGIC)
die("Blob has incorrect magic number\n");
- rc = fread(&totalsize, sizeof(totalsize), 1, dtcf->file);
- if (ferror(dtcf->file))
+ rc = fread(&totalsize, sizeof(totalsize), 1, f);
+ if (ferror(f))
die("Error reading DT blob size: %s\n", strerror(errno));
if (rc < 1) {
- if (feof(dtcf->file))
+ if (feof(f))
die("EOF reading DT blob size\n");
else
die("Mysterious short read reading blob size\n");
@@ -832,12 +858,12 @@ struct boot_info *dt_from_blob(const char *fname)
p = blob + sizeof(magic) + sizeof(totalsize);
while (sizeleft) {
- if (feof(dtcf->file))
+ if (feof(f))
die("EOF before reading %d bytes of DT blob\n",
totalsize);
- rc = fread(p, 1, sizeleft, dtcf->file);
- if (ferror(dtcf->file))
+ rc = fread(p, 1, sizeleft, f);
+ if (ferror(f))
die("Error reading DT blob: %s\n",
strerror(errno));
@@ -900,7 +926,7 @@ struct boot_info *dt_from_blob(const char *fname)
free(blob);
- dtc_close_file(dtcf);
+ fclose(f);
return build_boot_info(reservelist, tree, boot_cpuid_phys);
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-23 20:32:10 +0000