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authorRichard Qin <richard.qin.x@gmail.com>2026-07-10 11:31:46 +0800
committerRichard Qin <richard.qin.x@gmail.com>2026-07-10 11:31:46 +0800
commite90b72ec3082588b296956730bd2930cf8d5d671 (patch)
tree36ff6916af9b4176ea5a9662219d11e721f0b691 /na/scripts/dtc/libfdt/fdt_sw.c
parent1767d390fbf3d0c65389de46caf0b6d43ef3b6ad (diff)
downloadlume-e90b72ec3082588b296956730bd2930cf8d5d671.tar.gz
lume-e90b72ec3082588b296956730bd2930cf8d5d671.tar.xz
refactor: promote new architecture to repository root
Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.
Diffstat (limited to 'na/scripts/dtc/libfdt/fdt_sw.c')
-rw-r--r--na/scripts/dtc/libfdt/fdt_sw.c384
1 files changed, 0 insertions, 384 deletions
diff --git a/na/scripts/dtc/libfdt/fdt_sw.c b/na/scripts/dtc/libfdt/fdt_sw.c
deleted file mode 100644
index 4c569ee..0000000
--- a/na/scripts/dtc/libfdt/fdt_sw.c
+++ /dev/null
@@ -1,384 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
-/*
- * libfdt - Flat Device Tree manipulation
- * Copyright (C) 2006 David Gibson, IBM Corporation.
- */
-#include "libfdt_env.h"
-
-#include <fdt.h>
-#include <libfdt.h>
-
-#include "libfdt_internal.h"
-
-static int fdt_sw_probe_(void *fdt)
-{
- if (!can_assume(VALID_INPUT)) {
- if (fdt_magic(fdt) == FDT_MAGIC)
- return -FDT_ERR_BADSTATE;
- else if (fdt_magic(fdt) != FDT_SW_MAGIC)
- return -FDT_ERR_BADMAGIC;
- }
-
- return 0;
-}
-
-#define FDT_SW_PROBE(fdt) \
- { \
- int err; \
- if ((err = fdt_sw_probe_(fdt)) != 0) \
- return err; \
- }
-
-/* 'memrsv' state: Initial state after fdt_create()
- *
- * Allowed functions:
- * fdt_add_reservemap_entry()
- * fdt_finish_reservemap() [moves to 'struct' state]
- */
-static int fdt_sw_probe_memrsv_(void *fdt)
-{
- int err = fdt_sw_probe_(fdt);
- if (err)
- return err;
-
- if (!can_assume(VALID_INPUT) && fdt_off_dt_strings(fdt) != 0)
- return -FDT_ERR_BADSTATE;
- return 0;
-}
-
-#define FDT_SW_PROBE_MEMRSV(fdt) \
- { \
- int err; \
- if ((err = fdt_sw_probe_memrsv_(fdt)) != 0) \
- return err; \
- }
-
-/* 'struct' state: Enter this state after fdt_finish_reservemap()
- *
- * Allowed functions:
- * fdt_begin_node()
- * fdt_end_node()
- * fdt_property*()
- * fdt_finish() [moves to 'complete' state]
- */
-static int fdt_sw_probe_struct_(void *fdt)
-{
- int err = fdt_sw_probe_(fdt);
- if (err)
- return err;
-
- if (!can_assume(VALID_INPUT) &&
- fdt_off_dt_strings(fdt) != fdt_totalsize(fdt))
- return -FDT_ERR_BADSTATE;
- return 0;
-}
-
-#define FDT_SW_PROBE_STRUCT(fdt) \
- { \
- int err; \
- if ((err = fdt_sw_probe_struct_(fdt)) != 0) \
- return err; \
- }
-
-static inline uint32_t sw_flags(void *fdt)
-{
- /* assert: (fdt_magic(fdt) == FDT_SW_MAGIC) */
- return fdt_last_comp_version(fdt);
-}
-
-/* 'complete' state: Enter this state after fdt_finish()
- *
- * Allowed functions: none
- */
-
-static void *fdt_grab_space_(void *fdt, size_t len)
-{
- unsigned int offset = fdt_size_dt_struct(fdt);
- unsigned int spaceleft;
-
- spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt)
- - fdt_size_dt_strings(fdt);
-
- if ((offset + len < offset) || (offset + len > spaceleft))
- return NULL;
-
- fdt_set_size_dt_struct(fdt, offset + len);
- return fdt_offset_ptr_w_(fdt, offset);
-}
-
-int fdt_create_with_flags(void *buf, int bufsize, uint32_t flags)
-{
- const int hdrsize = FDT_ALIGN(sizeof(struct fdt_header),
- sizeof(struct fdt_reserve_entry));
- void *fdt = buf;
-
- if (bufsize < hdrsize)
- return -FDT_ERR_NOSPACE;
-
- if (flags & ~FDT_CREATE_FLAGS_ALL)
- return -FDT_ERR_BADFLAGS;
-
- memset(buf, 0, bufsize);
-
- /*
- * magic and last_comp_version keep intermediate state during the fdt
- * creation process, which is replaced with the proper FDT format by
- * fdt_finish().
- *
- * flags should be accessed with sw_flags().
- */
- fdt_set_magic(fdt, FDT_SW_MAGIC);
- fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION);
- fdt_set_last_comp_version(fdt, flags);
-
- fdt_set_totalsize(fdt, bufsize);
-
- fdt_set_off_mem_rsvmap(fdt, hdrsize);
- fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt));
- fdt_set_off_dt_strings(fdt, 0);
-
- return 0;
-}
-
-int fdt_create(void *buf, int bufsize)
-{
- return fdt_create_with_flags(buf, bufsize, 0);
-}
-
-int fdt_resize(void *fdt, void *buf, int bufsize)
-{
- size_t headsize, tailsize;
- char *oldtail, *newtail;
-
- FDT_SW_PROBE(fdt);
-
- if (bufsize < 0)
- return -FDT_ERR_NOSPACE;
-
- headsize = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
- tailsize = fdt_size_dt_strings(fdt);
-
- if (!can_assume(VALID_DTB) &&
- headsize + tailsize > fdt_totalsize(fdt))
- return -FDT_ERR_INTERNAL;
-
- if ((headsize + tailsize) > (unsigned)bufsize)
- return -FDT_ERR_NOSPACE;
-
- oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
- newtail = (char *)buf + bufsize - tailsize;
-
- /* Two cases to avoid clobbering data if the old and new
- * buffers partially overlap */
- if (buf <= fdt) {
- memmove(buf, fdt, headsize);
- memmove(newtail, oldtail, tailsize);
- } else {
- memmove(newtail, oldtail, tailsize);
- memmove(buf, fdt, headsize);
- }
-
- fdt_set_totalsize(buf, bufsize);
- if (fdt_off_dt_strings(buf))
- fdt_set_off_dt_strings(buf, bufsize);
-
- return 0;
-}
-
-int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
-{
- struct fdt_reserve_entry *re;
- int offset;
-
- FDT_SW_PROBE_MEMRSV(fdt);
-
- offset = fdt_off_dt_struct(fdt);
- if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
- return -FDT_ERR_NOSPACE;
-
- re = (struct fdt_reserve_entry *)((char *)fdt + offset);
- re->address = cpu_to_fdt64(addr);
- re->size = cpu_to_fdt64(size);
-
- fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
-
- return 0;
-}
-
-int fdt_finish_reservemap(void *fdt)
-{
- int err = fdt_add_reservemap_entry(fdt, 0, 0);
-
- if (err)
- return err;
-
- fdt_set_off_dt_strings(fdt, fdt_totalsize(fdt));
- return 0;
-}
-
-int fdt_begin_node(void *fdt, const char *name)
-{
- struct fdt_node_header *nh;
- int namelen;
-
- FDT_SW_PROBE_STRUCT(fdt);
-
- namelen = strlen(name) + 1;
- nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
- if (! nh)
- return -FDT_ERR_NOSPACE;
-
- nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
- memcpy(nh->name, name, namelen);
- return 0;
-}
-
-int fdt_end_node(void *fdt)
-{
- fdt32_t *en;
-
- FDT_SW_PROBE_STRUCT(fdt);
-
- en = fdt_grab_space_(fdt, FDT_TAGSIZE);
- if (! en)
- return -FDT_ERR_NOSPACE;
-
- *en = cpu_to_fdt32(FDT_END_NODE);
- return 0;
-}
-
-static int fdt_add_string_(void *fdt, const char *s)
-{
- char *strtab = (char *)fdt + fdt_totalsize(fdt);
- unsigned int strtabsize = fdt_size_dt_strings(fdt);
- unsigned int len = strlen(s) + 1;
- unsigned int struct_top, offset;
-
- offset = strtabsize + len;
- struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
- if (fdt_totalsize(fdt) - offset < struct_top)
- return 0; /* no more room :( */
-
- memcpy(strtab - offset, s, len);
- fdt_set_size_dt_strings(fdt, strtabsize + len);
- return -offset;
-}
-
-/* Must only be used to roll back in case of error */
-static void fdt_del_last_string_(void *fdt, const char *s)
-{
- int strtabsize = fdt_size_dt_strings(fdt);
- int len = strlen(s) + 1;
-
- fdt_set_size_dt_strings(fdt, strtabsize - len);
-}
-
-static int fdt_find_add_string_(void *fdt, const char *s, int *allocated)
-{
- char *strtab = (char *)fdt + fdt_totalsize(fdt);
- int strtabsize = fdt_size_dt_strings(fdt);
- const char *p;
-
- *allocated = 0;
-
- p = fdt_find_string_(strtab - strtabsize, strtabsize, s);
- if (p)
- return p - strtab;
-
- *allocated = 1;
-
- return fdt_add_string_(fdt, s);
-}
-
-int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp)
-{
- struct fdt_property *prop;
- int nameoff;
- int allocated;
-
- FDT_SW_PROBE_STRUCT(fdt);
-
- /* String de-duplication can be slow, _NO_NAME_DEDUP skips it */
- if (sw_flags(fdt) & FDT_CREATE_FLAG_NO_NAME_DEDUP) {
- allocated = 1;
- nameoff = fdt_add_string_(fdt, name);
- } else {
- nameoff = fdt_find_add_string_(fdt, name, &allocated);
- }
- if (nameoff == 0)
- return -FDT_ERR_NOSPACE;
-
- prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
- if (! prop) {
- if (allocated)
- fdt_del_last_string_(fdt, name);
- return -FDT_ERR_NOSPACE;
- }
-
- prop->tag = cpu_to_fdt32(FDT_PROP);
- prop->nameoff = cpu_to_fdt32(nameoff);
- prop->len = cpu_to_fdt32(len);
- *valp = prop->data;
- return 0;
-}
-
-int fdt_property(void *fdt, const char *name, const void *val, int len)
-{
- void *ptr;
- int ret;
-
- ret = fdt_property_placeholder(fdt, name, len, &ptr);
- if (ret)
- return ret;
- memcpy(ptr, val, len);
- return 0;
-}
-
-int fdt_finish(void *fdt)
-{
- char *p = (char *)fdt;
- fdt32_t *end;
- int oldstroffset, newstroffset;
- uint32_t tag;
- int offset, nextoffset;
-
- FDT_SW_PROBE_STRUCT(fdt);
-
- /* Add terminator */
- end = fdt_grab_space_(fdt, sizeof(*end));
- if (! end)
- return -FDT_ERR_NOSPACE;
- *end = cpu_to_fdt32(FDT_END);
-
- /* Relocate the string table */
- oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt);
- newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt);
- memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt));
- fdt_set_off_dt_strings(fdt, newstroffset);
-
- /* Walk the structure, correcting string offsets */
- offset = 0;
- while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
- if (tag == FDT_PROP) {
- struct fdt_property *prop =
- fdt_offset_ptr_w_(fdt, offset);
- int nameoff;
-
- nameoff = fdt32_to_cpu(prop->nameoff);
- nameoff += fdt_size_dt_strings(fdt);
- prop->nameoff = cpu_to_fdt32(nameoff);
- }
- offset = nextoffset;
- }
- if (nextoffset < 0)
- return nextoffset;
-
- /* Finally, adjust the header */
- fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt));
-
- /* And fix up fields that were keeping intermediate state. */
- fdt_set_last_comp_version(fdt, FDT_LAST_COMPATIBLE_VERSION);
- fdt_set_magic(fdt, FDT_MAGIC);
-
- return 0;
-}