diff options
Diffstat (limited to 'qemu/dtc/fdtdump.c')
| -rw-r--r-- | qemu/dtc/fdtdump.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/qemu/dtc/fdtdump.c b/qemu/dtc/fdtdump.c deleted file mode 100644 index 723770d6d..000000000 --- a/qemu/dtc/fdtdump.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * fdtdump.c - Contributed by Pantelis Antoniou <pantelis.antoniou AT gmail.com> - */ - -#include <stdbool.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> - -#include <libfdt.h> -#include <libfdt_env.h> -#include <fdt.h> - -#include "util.h" - -#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1)) -#define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a)))) -#define GET_CELL(p) (p += 4, *((const uint32_t *)(p-4))) - -static const char *tagname(uint32_t tag) -{ - static const char * const names[] = { -#define TN(t) [t] #t - TN(FDT_BEGIN_NODE), - TN(FDT_END_NODE), - TN(FDT_PROP), - TN(FDT_NOP), - TN(FDT_END), -#undef TN - }; - if (tag < ARRAY_SIZE(names)) - if (names[tag]) - return names[tag]; - return "FDT_???"; -} - -#define dumpf(fmt, args...) \ - do { if (debug) printf("// " fmt, ## args); } while (0) - -static void dump_blob(void *blob, bool debug) -{ - uintptr_t blob_off = (uintptr_t)blob; - struct fdt_header *bph = blob; - uint32_t off_mem_rsvmap = fdt32_to_cpu(bph->off_mem_rsvmap); - uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct); - uint32_t off_str = fdt32_to_cpu(bph->off_dt_strings); - struct fdt_reserve_entry *p_rsvmap = - (struct fdt_reserve_entry *)((char *)blob + off_mem_rsvmap); - const char *p_struct = (const char *)blob + off_dt; - const char *p_strings = (const char *)blob + off_str; - uint32_t version = fdt32_to_cpu(bph->version); - uint32_t totalsize = fdt32_to_cpu(bph->totalsize); - uint32_t tag; - const char *p, *s, *t; - int depth, sz, shift; - int i; - uint64_t addr, size; - - depth = 0; - shift = 4; - - printf("/dts-v1/;\n"); - printf("// magic:\t\t0x%x\n", fdt32_to_cpu(bph->magic)); - printf("// totalsize:\t\t0x%x (%d)\n", totalsize, totalsize); - printf("// off_dt_struct:\t0x%x\n", off_dt); - printf("// off_dt_strings:\t0x%x\n", off_str); - printf("// off_mem_rsvmap:\t0x%x\n", off_mem_rsvmap); - printf("// version:\t\t%d\n", version); - printf("// last_comp_version:\t%d\n", - fdt32_to_cpu(bph->last_comp_version)); - if (version >= 2) - printf("// boot_cpuid_phys:\t0x%x\n", - fdt32_to_cpu(bph->boot_cpuid_phys)); - - if (version >= 3) - printf("// size_dt_strings:\t0x%x\n", - fdt32_to_cpu(bph->size_dt_strings)); - if (version >= 17) - printf("// size_dt_struct:\t0x%x\n", - fdt32_to_cpu(bph->size_dt_struct)); - printf("\n"); - - for (i = 0; ; i++) { - addr = fdt64_to_cpu(p_rsvmap[i].address); - size = fdt64_to_cpu(p_rsvmap[i].size); - if (addr == 0 && size == 0) - break; - - printf("/memreserve/ %llx %llx;\n", - (unsigned long long)addr, (unsigned long long)size); - } - - p = p_struct; - while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) { - - dumpf("%04zx: tag: 0x%08x (%s)\n", - (uintptr_t)p - blob_off - 4, tag, tagname(tag)); - - if (tag == FDT_BEGIN_NODE) { - s = p; - p = PALIGN(p + strlen(s) + 1, 4); - - if (*s == '\0') - s = "/"; - - printf("%*s%s {\n", depth * shift, "", s); - - depth++; - continue; - } - - if (tag == FDT_END_NODE) { - depth--; - - printf("%*s};\n", depth * shift, ""); - continue; - } - - if (tag == FDT_NOP) { - printf("%*s// [NOP]\n", depth * shift, ""); - continue; - } - - if (tag != FDT_PROP) { - fprintf(stderr, "%*s ** Unknown tag 0x%08x\n", depth * shift, "", tag); - break; - } - sz = fdt32_to_cpu(GET_CELL(p)); - s = p_strings + fdt32_to_cpu(GET_CELL(p)); - if (version < 16 && sz >= 8) - p = PALIGN(p, 8); - t = p; - - p = PALIGN(p + sz, 4); - - dumpf("%04zx: string: %s\n", (uintptr_t)s - blob_off, s); - dumpf("%04zx: value\n", (uintptr_t)t - blob_off); - printf("%*s%s", depth * shift, "", s); - utilfdt_print_data(t, sz); - printf(";\n"); - } -} - -/* Usage related data. */ -static const char usage_synopsis[] = "fdtdump [options] <file>"; -static const char usage_short_opts[] = "ds" USAGE_COMMON_SHORT_OPTS; -static struct option const usage_long_opts[] = { - {"debug", no_argument, NULL, 'd'}, - {"scan", no_argument, NULL, 's'}, - USAGE_COMMON_LONG_OPTS -}; -static const char * const usage_opts_help[] = { - "Dump debug information while decoding the file", - "Scan for an embedded fdt in file", - USAGE_COMMON_OPTS_HELP -}; - -int main(int argc, char *argv[]) -{ - int opt; - const char *file; - char *buf; - bool debug = false; - bool scan = false; - off_t len; - - while ((opt = util_getopt_long()) != EOF) { - switch (opt) { - case_USAGE_COMMON_FLAGS - - case 'd': - debug = true; - break; - case 's': - scan = true; - break; - } - } - if (optind != argc - 1) - usage("missing input filename"); - file = argv[optind]; - - buf = utilfdt_read_len(file, &len); - if (!buf) - die("could not read: %s\n", file); - - /* try and locate an embedded fdt in a bigger blob */ - if (scan) { - unsigned char smagic[4]; - char *p = buf; - char *endp = buf + len; - - fdt_set_magic(smagic, FDT_MAGIC); - - /* poor man's memmem */ - while (true) { - p = memchr(p, smagic[0], endp - p - 4); - if (!p) - break; - if (fdt_magic(p) == FDT_MAGIC) { - /* try and validate the main struct */ - off_t this_len = endp - p; - fdt32_t max_version = 17; - if (fdt_version(p) <= max_version && - fdt_last_comp_version(p) < max_version && - fdt_totalsize(p) < this_len && - fdt_off_dt_struct(p) < this_len && - fdt_off_dt_strings(p) < this_len) - break; - if (debug) - printf("%s: skipping fdt magic at offset %#zx\n", - file, p - buf); - } - ++p; - } - if (!p) - die("%s: could not locate fdt magic\n", file); - printf("%s: found fdt at offset %#zx\n", file, p - buf); - buf = p; - } - - dump_blob(buf, debug); - - return 0; -} |