[LG Optimus 4X HD] The_0ne:
That's what I have found. Maybe it's useful for someone.

I think the most importpant files are "tegra_odm_fuses.h" and "tegra_odm_fuses.c"

\LGP880(X3)_Android_ICS_V10a\kernel\arch\arm\mach-tegra\include\mach\tegra_odm_fuses.h (11 hits)
Line 24: #define SBK_DEVKEY_STATUS_SZ	sizeof(u32)
Line 35:	* time as the sbk or dev_key is not allowed as it is not possible to
Line 36:	* verify that the sbk or dev_key were programmed correctly.
Line 41:	SBK,
Line 45:	SBK_DEVKEY_STATUS,
Line 49: #define MAX_PARAMS SBK_DEVKEY_STATUS
Line 58:	u32 sbk[4];
Line 85: #define FLAGS_SBK_DEVKEY_STATUS	BIT(SBK_DEVKEY_STATUS)
Line 85: #define FLAGS_SBK_DEVKEY_STATUS	BIT(SBK_DEVKEY_STATUS)
Line 89: #define FLAGS_SBK	BIT(SBK)
Line 89: #define FLAGS_SBK	BIT(SBK)
\LGP880(X3)_Android_ICS_V10a\kernel\arch\arm\mach-tegra\tegra_odm_fuses.c (20 hits)
Line 92: static struct kobj_attribute sbk_attr =
Line 187:	[SBK] = {
Line 188:	.addr = fuse_info.sbk,
Line 189:	.sz = sizeof(fuse_info.sbk),
Line 243:	[SBK_DEVKEY_STATUS] = {
Line 244:	.sz = SBK_DEVKEY_STATUS_SZ,
Line 343:	u32 sbk[4], devkey = 0;
Line 364:	if (io_param == SBK_DEVKEY_STATUS) {
Line 367:	get_fuse(SBK, sbk);
Line 367:	get_fuse(SBK, sbk);
Line 369:	nbits = sizeof(sbk) * BITS_PER_BYTE;
Line 370:	if (find_first_bit((unsigned long *)sbk, nbits) != nbits)
Line 616:	(flags & (FLAGS_SBK | FLAGS_DEVKEY))) {
Line 617:	pr_err("odm production mode and sbk/devkey not allowed");
Line 800:	CHK_ERR(sysfs_chmod_file(kobj, &sbk_attr.attr, 0440));
Line 824:	if ((param == SBK) && fuse_odm_prod_mode()) {
Line 825:	pr_err("device locked. sbk read not allowed\n");
Line 883:	sbk_attr.attr.mode = 0640;
Line 895:	CHK_ERR(sysfs_create_file(fuse_kobj, &sbk_attr.attr));
Line 919:	sysfs_remove_file(fuse_kobj, &sbk_attr.attr);
\LGP880(X3)_Android_ICS_V10a\kernel\arch\arm\mach-vt8500\include\mach\vt8500_regs.h (2 hits)
Line 51: #define VT8500_TSBK_BASE	0xd80f4000	/* 4k	TSBK */
Line 51: #define VT8500_TSBK_BASE	0xd80f4000	/* 4k	TSBK */
\LGP880(X3)_Android_ICS_V10a\kernel\arch\sparc\kernel\head_32.S (1 hits)
Line 149: t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */
\LGP880(X3)_Android_ICS_V10a\kernel\drivers\isdn\hardware\mISDN\hfcsusb.c (2 hits)
Line 909:	printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
Line 919:	printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
\LGP880(X3)_Android_ICS_V10a\kernel\drivers\net\ucc_geth.h (1 hits)
Line 1211:	/* indices pointing to the next free sbk in skb arrays */
\LGP880(X3)_Android_ICS_V10a\kernel\drivers\net\wireless\rt2x00\rt2800usb.c (1 hits)
Line 459:	* Remove the RXINFO structure from the sbk.
\LGP880(X3)_Android_ICS_V10a\kernel\fs\reiserfs\procfs.c (4 hits)
Line 139:	" [sbk: reads"
Line 172:	SFPL(sbk_read_at),
Line 173:	SFPL(sbk_fs_changed),
Line 174:	SFPL(sbk_restarted),
\LGP880(X3)_Android_ICS_V10a\kernel\fs\reiserfs\stree.c (1 hits)
Line 691:	sbk_restarted[expected_level - 1]);
\LGP880(X3)_Android_ICS_V10a\kernel\include\linux\reiserfs_fs.h (1 hits)
Line 2100: PROC_INFO_INC( sb, sbk_read_at[ ( level ) ] );	\
\LGP880(X3)_Android_ICS_V10a\kernel\include\linux\reiserfs_fs_sb.h (4 hits)
Line 302:	/* sbk == search_by_key */
Line 303:	stat_cnt_t sbk_read_at[5];	/* XXX */
Line 304:	stat_cnt_t sbk_fs_changed[5];
Line 305:	stat_cnt_t sbk_restarted[5];