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93 lines
2.1 KiB
93 lines
2.1 KiB
// SPDX-License-Identifier: LGPL-2.1-or-later |
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/* |
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* libfdt - Flat Device Tree manipulation |
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* Testcase/tool for rearranging blocks of a dtb |
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* Copyright (C) 2006 David Gibson, IBM Corporation. |
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*/ |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <limits.h> |
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#include <stdint.h> |
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#include <libfdt.h> |
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#include "tests.h" |
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#include "testdata.h" |
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static int nopulate_struct(char *buf, const char *fdt) |
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{ |
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int offset, nextoffset = 0; |
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uint32_t tag; |
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char *p; |
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p = buf; |
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do { |
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offset = nextoffset; |
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tag = fdt_next_tag(fdt, offset, &nextoffset); |
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memcpy(p, (const char *)fdt + fdt_off_dt_struct(fdt) + offset, |
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nextoffset - offset); |
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p += nextoffset - offset; |
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*((fdt32_t *)p) = cpu_to_fdt32(FDT_NOP); |
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p += FDT_TAGSIZE; |
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} while (tag != FDT_END); |
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return p - buf; |
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} |
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int main(int argc, char *argv[]) |
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{ |
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char *fdt, *fdt2, *buf; |
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int newsize, struct_end_old, struct_end_new, delta; |
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unsigned int struct_start; |
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const char *inname; |
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char outname[PATH_MAX]; |
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test_init(argc, argv); |
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if (argc != 2) |
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CONFIG("Usage: %s <dtb file>", argv[0]); |
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inname = argv[1]; |
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fdt = load_blob(argv[1]); |
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sprintf(outname, "noppy.%s", inname); |
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if (fdt_version(fdt) < 17) |
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FAIL("Can't deal with version <17"); |
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buf = xmalloc(2 * fdt_size_dt_struct(fdt)); |
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newsize = nopulate_struct(buf, fdt); |
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verbose_printf("Nopulated structure block has new size %d\n", newsize); |
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/* Replace old strcutre block with the new */ |
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fdt2 = xmalloc(fdt_totalsize(fdt) + newsize); |
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struct_start = fdt_off_dt_struct(fdt); |
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delta = newsize - fdt_size_dt_struct(fdt); |
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struct_end_old = struct_start + fdt_size_dt_struct(fdt); |
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struct_end_new = struct_start + newsize; |
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memcpy(fdt2, fdt, struct_start); |
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memcpy(fdt2 + struct_start, buf, newsize); |
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memcpy(fdt2 + struct_end_new, fdt + struct_end_old, |
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fdt_totalsize(fdt) - struct_end_old); |
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fdt_set_totalsize(fdt2, fdt_totalsize(fdt) + delta); |
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fdt_set_size_dt_struct(fdt2, newsize); |
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if (fdt_off_mem_rsvmap(fdt) > struct_start) |
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fdt_set_off_mem_rsvmap(fdt2, fdt_off_mem_rsvmap(fdt) + delta); |
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if (fdt_off_dt_strings(fdt) > struct_start) |
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fdt_set_off_dt_strings(fdt2, fdt_off_dt_strings(fdt) + delta); |
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save_blob(outname, fdt2); |
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PASS(); |
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}
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