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path: root/util/cbfstool/cbfstool.c
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Diffstat (limited to 'util/cbfstool/cbfstool.c')
-rw-r--r--util/cbfstool/cbfstool.c120
1 files changed, 71 insertions, 49 deletions
diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c
index f57f288416..9c611197cf 100644
--- a/util/cbfstool/cbfstool.c
+++ b/util/cbfstool/cbfstool.c
@@ -53,7 +53,8 @@ static struct param {
uint32_t size;
uint32_t alignment;
uint32_t pagesize;
- uint32_t offset;
+ uint32_t cbfsoffset;
+ uint32_t cbfsoffset_assigned;
uint32_t top_aligned;
uint32_t arch;
int fit_empty_entries;
@@ -339,40 +340,58 @@ static int cbfs_create(void)
return 1;
}
- if (!param.bootblock) {
- ERROR("You need to specify -B/--bootblock.\n");
- return 1;
- }
-
if (param.arch == CBFS_ARCHITECTURE_UNKNOWN) {
ERROR("You need to specify -m/--machine arch.\n");
return 1;
}
- if (buffer_from_file(&bootblock, param.bootblock) != 0) {
+ if (!param.bootblock) {
+ DEBUG("-B not given, creating image without bootblock.\n");
+ buffer_create(&bootblock, 0, "(dummy)");
+ } else if (buffer_from_file(&bootblock, param.bootblock)) {
return 1;
}
- // Setup default boot offset and header offset.
+ if (!param.alignment)
+ param.alignment = 64; // default CBFS entry alignment
+
+ // Set default offsets. x86, as usual, needs to be a special snowflake.
if (!param.baseaddress_assigned) {
- // put boot block before end of ROM.
- param.baseaddress = param.size - bootblock.size;
- DEBUG("bootblock in end of ROM.\n");
+ if (param.arch == CBFS_ARCHITECTURE_X86) {
+ // Make sure there's at least enough room for rel_offset
+ param.baseaddress = param.size - (
+ bootblock.size > sizeof(int32_t) ?
+ bootblock.size : sizeof(int32_t));
+ DEBUG("x86 -> bootblock lies at end of ROM (%#x).\n",
+ param.baseaddress);
+ } else {
+ param.baseaddress = 0;
+ DEBUG("bootblock starts at address 0x0.\n");
+ }
}
if (!param.headeroffset_assigned) {
- // Put header before bootblock, and make a reference in end of
- // bootblock.
- param.headeroffset = (
- param.baseaddress -
- sizeof(struct cbfs_header));
- if (bootblock.size >= sizeof(uint32_t)) {
- // TODO this only works for 32b top-aligned system now...
- uint32_t ptr = param.headeroffset - param.size;
- uint32_t *sig = (uint32_t *)(bootblock.data +
- bootblock.size -
- sizeof(ptr));
- *sig = ptr;
- DEBUG("CBFS header reference in end of bootblock.\n");
+ if (param.arch == CBFS_ARCHITECTURE_X86) {
+ param.headeroffset = param.baseaddress -
+ sizeof(struct cbfs_header);
+ DEBUG("x86 -> CBFS header before bootblock (%#x).\n",
+ param.headeroffset);
+ } else {
+ param.headeroffset = align_up(param.baseaddress +
+ bootblock.size, sizeof(uint32_t));
+ DEBUG("CBFS header placed behind bootblock (%#x).\n",
+ param.headeroffset);
+ }
+ }
+ if (!param.cbfsoffset_assigned) {
+ if (param.arch == CBFS_ARCHITECTURE_X86) {
+ param.cbfsoffset = 0;
+ DEBUG("x86 -> CBFS entries start at address 0x0.\n");
+ } else {
+ param.cbfsoffset = align_up(param.headeroffset +
+ sizeof(struct cbfs_header),
+ param.alignment);
+ DEBUG("CBFS entries start beind master header (%#x).\n",
+ param.cbfsoffset);
}
}
@@ -383,7 +402,7 @@ static int cbfs_create(void)
&bootblock,
param.baseaddress,
param.headeroffset,
- param.offset) != 0) {
+ param.cbfsoffset) != 0) {
ERROR("Failed to create %s.\n", param.cbfs_name);
return 1;
}
@@ -533,28 +552,29 @@ static const struct command commands[] = {
};
static struct option long_options[] = {
- {"name", required_argument, 0, 'n' },
- {"type", required_argument, 0, 't' },
- {"compression", required_argument, 0, 'c' },
- {"base-address", required_argument, 0, 'b' },
- {"load-address", required_argument, 0, 'l' },
- {"top-aligned", required_argument, 0, 'T' },
- {"entry-point", required_argument, 0, 'e' },
- {"size", required_argument, 0, 's' },
- {"bootblock", required_argument, 0, 'B' },
- {"alignment", required_argument, 0, 'a' },
- {"page-size", required_argument, 0, 'P' },
- {"offset", required_argument, 0, 'o' },
- {"file", required_argument, 0, 'f' },
- {"int", required_argument, 0, 'i' },
- {"machine", required_argument, 0, 'm' },
- {"empty-fits", required_argument, 0, 'x' },
- {"initrd", required_argument, 0, 'I' },
- {"cmdline", required_argument, 0, 'C' },
- {"ignore-sec", required_argument, 0, 'S' },
- {"verbose", no_argument, 0, 'v' },
- {"help", no_argument, 0, 'h' },
- {NULL, 0, 0, 0 }
+ {"name", required_argument, 0, 'n' },
+ {"type", required_argument, 0, 't' },
+ {"compression", required_argument, 0, 'c' },
+ {"base-address", required_argument, 0, 'b' },
+ {"load-address", required_argument, 0, 'l' },
+ {"top-aligned", required_argument, 0, 'T' },
+ {"entry-point", required_argument, 0, 'e' },
+ {"size", required_argument, 0, 's' },
+ {"bootblock", required_argument, 0, 'B' },
+ {"header-offset", required_argument, 0, 'H' },
+ {"alignment", required_argument, 0, 'a' },
+ {"page-size", required_argument, 0, 'P' },
+ {"offset", required_argument, 0, 'o' },
+ {"file", required_argument, 0, 'f' },
+ {"int", required_argument, 0, 'i' },
+ {"machine", required_argument, 0, 'm' },
+ {"empty-fits", required_argument, 0, 'x' },
+ {"initrd", required_argument, 0, 'I' },
+ {"cmdline", required_argument, 0, 'C' },
+ {"ignore-sec", required_argument, 0, 'S' },
+ {"verbose", no_argument, 0, 'v' },
+ {"help", no_argument, 0, 'h' },
+ {NULL, 0, 0, 0 }
};
static void usage(char *name)
@@ -582,7 +602,8 @@ static void usage(char *name)
"Add a raw 64-bit integer value\n"
" remove -n NAME "
"Remove a component\n"
- " create -s size -B bootblock -m ARCH [-a align] [-o offset] "
+ " create -s size -m ARCH [-B bootblock] [-b bootblock offset] \\\n"
+ " [-o CBFS offset] [-H header offset] [-a align] "
"Create a ROM file\n"
" locate -f FILE -n NAME [-P page-size] [-a align] [-T] "
"Find a place for a file of that size\n"
@@ -694,7 +715,8 @@ int main(int argc, char **argv)
param.pagesize = strtoul(optarg, NULL, 0);
break;
case 'o':
- param.offset = strtoul(optarg, NULL, 0);
+ param.cbfsoffset = strtoul(optarg, NULL, 0);
+ param.cbfsoffset_assigned = 1;
break;
case 'f':
param.filename = optarg;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-22 05:11:07 +0000