powerpc: Update in-kernel dtc and libfdt to version 1.2.0

Some time ago, a copies of the upstream dtc and libfdt sources were
included in the kernel tree to avoid having these as external
dependencies for building the kernel.  Since then development on the
upstream dtc and libfdt has continued.  This updates the in-kernel
versions to match the recently released upstream dtc version 1.2.0.
This includes a number of bugfixes, many cleanups and a few new
features.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 27 insertions, 28 deletions

diff --git a/arch/powerpc/boot/libfdt/fdt_sw.c b/arch/powerpc/boot/libfdt/fdt_sw.c
index dda2de34b2e0..698329e0ccaf 100644
--- a/arch/powerpc/boot/libfdt/fdt_sw.c
+++ b/arch/powerpc/boot/libfdt/fdt_sw.c
@@ -55,14 +55,22 @@
 
 #include "libfdt_internal.h"
 
-static int check_header_sw(void *fdt)
+static int _fdt_sw_check_header(void *fdt)
 {
-        if (fdt_magic(fdt) != SW_MAGIC)
+        if (fdt_magic(fdt) != FDT_SW_MAGIC)
                 return -FDT_ERR_BADMAGIC;
+        /* FIXME: should check more details about the header state */
         return 0;
 }
 
-static void *grab_space(void *fdt, int len)
+#define FDT_SW_CHECK_HEADER(fdt) \
+        { \
+                int err; \
+                if ((err = _fdt_sw_check_header(fdt)) != 0) \
+                        return err; \
+        }
+
+static void *_fdt_grab_space(void *fdt, int len)
 {
         int offset = fdt_size_dt_struct(fdt);
         int spaceleft;
@@ -86,13 +94,13 @@ int fdt_create(void *buf, int bufsize)
 
         memset(buf, 0, bufsize);
 
-        fdt_set_magic(fdt, SW_MAGIC);
+        fdt_set_magic(fdt, FDT_SW_MAGIC);
         fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
         fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION);
         fdt_set_totalsize(fdt,  bufsize);
 
-        fdt_set_off_mem_rsvmap(fdt, ALIGN(sizeof(struct fdt_header),
-                                          sizeof(struct fdt_reserve_entry)));
+        fdt_set_off_mem_rsvmap(fdt, FDT_ALIGN(sizeof(struct fdt_header),
+                                              sizeof(struct fdt_reserve_entry)));
         fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
         fdt_set_off_dt_strings(fdt, bufsize);
 
@@ -102,11 +110,10 @@ int fdt_create(void *buf, int bufsize)
 int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
 {
         struct fdt_reserve_entry *re;
-        int err = check_header_sw(fdt);
         int offset;
 
-        if (err)
-                return err;
+        FDT_SW_CHECK_HEADER(fdt);
+
         if (fdt_size_dt_struct(fdt))
                 return -FDT_ERR_BADSTATE;
 
@@ -114,7 +121,7 @@ int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
         if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
                 return -FDT_ERR_NOSPACE;
 
-        re = (struct fdt_reserve_entry *)(fdt + offset);
+        re = (struct fdt_reserve_entry *)((char *)fdt + offset);
         re->address = cpu_to_fdt64(addr);
         re->size = cpu_to_fdt64(size);
 
@@ -131,13 +138,11 @@ int fdt_finish_reservemap(void *fdt)
 int fdt_begin_node(void *fdt, const char *name)
 {
         struct fdt_node_header *nh;
-        int err = check_header_sw(fdt);
         int namelen = strlen(name) + 1;
 
-        if (err)
-                return err;
+        FDT_SW_CHECK_HEADER(fdt);
 
-        nh = grab_space(fdt, sizeof(*nh) + ALIGN(namelen, FDT_TAGSIZE));
+        nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
         if (! nh)
                 return -FDT_ERR_NOSPACE;
 
@@ -149,12 +154,10 @@ int fdt_begin_node(void *fdt, const char *name)
 int fdt_end_node(void *fdt)
 {
         uint32_t *en;
-        int err = check_header_sw(fdt);
 
-        if (err)
-                return err;
+        FDT_SW_CHECK_HEADER(fdt);
 
-        en = grab_space(fdt, FDT_TAGSIZE);
+        en = _fdt_grab_space(fdt, FDT_TAGSIZE);
         if (! en)
                 return -FDT_ERR_NOSPACE;
 
@@ -162,7 +165,7 @@ int fdt_end_node(void *fdt)
         return 0;
 }
 
-static int find_add_string(void *fdt, const char *s)
+static int _fdt_find_add_string(void *fdt, const char *s)
 {
         char *strtab = (char *)fdt + fdt_totalsize(fdt);
         const char *p;
@@ -188,17 +191,15 @@ static int find_add_string(void *fdt, const char *s)
 int fdt_property(void *fdt, const char *name, const void *val, int len)
 {
         struct fdt_property *prop;
-        int err = check_header_sw(fdt);
         int nameoff;
 
-        if (err)
-                return err;
+        FDT_SW_CHECK_HEADER(fdt);
 
-        nameoff = find_add_string(fdt, name);
+        nameoff = _fdt_find_add_string(fdt, name);
         if (nameoff == 0)
                 return -FDT_ERR_NOSPACE;
 
-        prop = grab_space(fdt, sizeof(*prop) + ALIGN(len, FDT_TAGSIZE));
+        prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
         if (! prop)
                 return -FDT_ERR_NOSPACE;
 
@@ -211,18 +212,16 @@ int fdt_property(void *fdt, const char *name, const void *val, int len)
 
 int fdt_finish(void *fdt)
 {
-        int err = check_header_sw(fdt);
         char *p = (char *)fdt;
         uint32_t *end;
         int oldstroffset, newstroffset;
         uint32_t tag;
         int offset, nextoffset;
 
-        if (err)
-                return err;
+        FDT_SW_CHECK_HEADER(fdt);
 
         /* Add terminator */
-        end = grab_space(fdt, sizeof(*end));
+        end = _fdt_grab_space(fdt, sizeof(*end));
         if (! end)
                 return -FDT_ERR_NOSPACE;
         *end = cpu_to_fdt32(FDT_END);