1~

针对德州仪器DM270开发板的bootloader,其实现了内核的下载以及文件系统的下载

  9007d8:	43324965 	teqmi	r2, #1654784	; 0x194000
  9007dc:	4355535f 	cmpmi	r5, #2080374785	; 0x7c000001
  9007e0:	53534543 	cmppl	r3, #281018368	; 0x10c00000
  9007e4:	492c303a 	stmmidb	r12!, {r1, r3, r4, r5, r12, sp}
  9007e8:	455f4332 	ldrmib	r4, [pc, #fffffcce]	; 9004be <L_STACK_UNTOUCHED_MAGIC+0x3ca>
  9007ec:	524f5252 	subpl	r5, pc, #536870917	; 0x20000005
  9007f0:	3b2c313a 	blcc	140cce0 <__bss_end+0xaf9374>
  9007f4:	43324900 	teqmi	r2, #0	; 0x0
  9007f8:	5445525f 	strplb	r5, [r5], -#607
  9007fc:	3a4e5255 	bcc	1c95158 <__bss_end+0x13817ec>
  900800:	2c352874 	ldccs	8, cr2, [r5], -#464
  900804:	283d2932 	ldmcsda	sp!, {r1, r4, r5, r8, r11, sp}
  900808:	29312c35 	ldmcsdb	r1!, {r0, r2, r4, r5, r10, r11, sp}
  90080c:	326d6400 	rsbcc	r6, sp, #0	; 0x0
  900810:	722d3037 	eorvc	r3, sp, #55	; 0x37
  900814:	73696765 	cmnvc	r9, #26476544	; 0x1940000
  900818:	73726574 	cmnvc	r2, #486539264	; 0x1d000000
  90081c:	4500682e 	strmi	r6, [r0, -#2094]
  900820:	5952544e 	ldmpldb	r2, {r1, r2, r3, r6, r10, r12, lr}^
  900824:	3028743a 	eorcc	r7, r8, r10, lsr r4
  900828:	2931322c 	ldmcsdb	r1!, {r2, r3, r5, r9, r12, sp}
  90082c:	2c30283d 	ldccs	8, cr2, [r0], -#244
  900830:	3d293232 	sfmcc	f3, 4, [r9, -#200]!
  900834:	2c30282a 	ldccs	8, cr2, [r0], -#168
  900838:	3d293332 	stccc	3, cr3, [r9, -#200]!
  90083c:	2c302866 	ldccs	8, cr2, [r0], -#408
  900840:	00293931 	eoreq	r3, r9, r1, lsr r9
  900844:	746f6f62 	strvcbt	r6, [pc], #f62	; 90084c <L_STACK_UNTOUCHED_MAGIC+0x758>
  900848:	61727473 	cmnvs	r2, r3, ror r4
  90084c:	28463a70 	stmcsda	r6, {r4, r5, r6, r9, r11, r12, sp}^
  900850:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900854:	6e650029 	cdpvs	0, 6, cr0, cr5, cr9, {1}
  900858:	5f797274 	swipl	0x00797274
  90085c:	72646461 	rsbvc	r6, r4, #1627389952	; 0x61000000
  900860:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900864:	00293132 	eoreq	r3, r9, r2, lsr r1
  900868:	5f6d756e 	swipl	0x006d756e
  90086c:	65747962 	ldrvsb	r7, [r4, -#2402]!
  900870:	30283a73 	eorcc	r3, r8, r3, ror r10
  900874:	0029342c 	eoreq	r3, r9, r12, lsr #8
  900878:	72617473 	rsbvc	r7, r1, #1929379840	; 0x73000000
  90087c:	30283a74 	eorcc	r3, r8, r4, ror r10
  900880:	0029342c 	eoreq	r3, r9, r12, lsr #8
  900884:	3a646e65 	bcc	221c220 <__bss_end+0x19088b4>
  900888:	342c3028 	strcct	r3, [r12], -#40
  90088c:	3a690029 	bcc	2340938 <__bss_end+0x1a2cfcc>
  900890:	312c3028 	teqcc	r12, r8, lsr #32
  900894:	73660029 	cmnvc	r6, #41	; 0x29
  900898:	6464615f 	strvsbt	r6, [r4], -#351
  90089c:	30283a72 	eorcc	r3, r8, r2, ror r10
  9008a0:	2934322c 	ldmcsdb	r4!, {r2, r3, r5, r9, r12, sp}
  9008a4:	30282a3d 	eorcc	r2, r8, sp, lsr r10
  9008a8:	0029392c 	eoreq	r3, r9, r12, lsr #18
  9008ac:	615f7372 	cmpvs	pc, r2, ror r3
  9008b0:	3a726464 	bcc	2599a48 <__bss_end+0x1c860dc>
  9008b4:	322c3028 	eorcc	r3, r12, #40	; 0x28
  9008b8:	6e002934 	mcrvs	9, 0, r2, cr0, cr4, {1}
  9008bc:	315f6d75 	cmpcc	pc, r5, ror sp
  9008c0:	74696236 	strvcbt	r6, [r9], -#566
  9008c4:	726f775f 	rsbvc	r7, pc, #24903680	; 0x17c0000
  9008c8:	283a7364 	ldmcsda	r10!, {r2, r5, r6, r8, r9, r12, sp, lr}
  9008cc:	29342c30 	ldmcsdb	r4!, {r4, r5, r10, r11, sp}
  9008d0:	6d657400 	stcvsl	4, cr7, [r5]
  9008d4:	30283a70 	eorcc	r3, r8, r0, ror r10
  9008d8:	0029392c 	eoreq	r3, r9, r12, lsr #18
  9008dc:	646c7462 	strvsbt	r7, [r12], -#1122
  9008e0:	69755f72 	ldmvsdb	r5!, {r1, r4, r5, r6, r8, r9, r10, r11, r12, lr}^
  9008e4:	7400632e 	strvc	r6, [r0], -#814
  9008e8:	73657079 	cmnvc	r5, #121	; 0x79
  9008ec:	7000682e 	andvc	r6, r0, lr, lsr #16
  9008f0:	72676f72 	rsbvc	r6, r7, #456	; 0x1c8
  9008f4:	5f737365 	swipl	0x00737365
  9008f8:	6574656d 	ldrvsb	r6, [r4, -#1389]!
  9008fc:	42435f72 	submi	r5, r3, #456	; 0x1c8
  900900:	5f6b6361 	swipl	0x006b6361
  900904:	28743a74 	ldmcsda	r4!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900908:	29312c31 	ldmcsdb	r1!, {r0, r4, r5, r10, r11, sp}
  90090c:	2c31283d 	ldccs	8, cr2, [r1], -#244
  900910:	2a3d2932 	bcs	184ade0 <__bss_end+0xf37474>
  900914:	332c3128 	teqcc	r12, #10	; 0xa
  900918:	28663d29 	stmcsda	r6!, {r0, r3, r5, r8, r10, r11, r12, sp}^
  90091c:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900920:	3a200029 	bcc	11009cc <__bss_end+0x7ed060>
  900924:	2c312854 	ldccs	8, cr2, [r1], -#336
  900928:	653d2934 	ldrvs	r2, [sp, -#2356]!
  90092c:	44414f4c 	strmib	r4, [r1], -#3916
  900930:	3a4b4f5f 	bcc	1bd46b4 <__bss_end+0x12c0d48>
  900934:	4f4c2c30 	swimi	0x004c2c30
  900938:	4d5f4441 	ldcmil	4, cr4, [pc, -#260]
  90093c:	49535349 	ldmmidb	r3, {r0, r3, r6, r8, r9, r12, lr}^
  900940:	435f474e 	cmpmi	pc, #20447232	; 0x1380000
  900944:	4b434142 	blmi	19d0e54 <__bss_end+0x10bd4e8>
  900948:	4c2c313a 	stfmis	f3, [r12], -#232
  90094c:	5f44414f 	swipl	0x0044414f
  900950:	41564e49 	cmpmi	r6, r9, asr #28
  900954:	5f44494c 	swipl	0x0044494c
  900958:	4d524f46 	ldcmil	15, cr4, [r2, -#280]
  90095c:	323a5441 	eorccs	r5, r10, #1090519040	; 0x41000000
  900960:	414f4c2c 	cmpmi	pc, r12, lsr #24
  900964:	4e495f44 	cdpmi	15, 4, cr5, cr9, cr4, {2}
  900968:	494c4156 	stmmidb	r12, {r1, r2, r4, r6, r8, lr}^
  90096c:	48435f44 	stmmida	r3, {r2, r6, r8, r9, r10, r11, r12, lr}^
  900970:	4d55534b 	ldcmil	3, cr5, [r5, -#300]
  900974:	3b2c333a 	blcc	140d664 <__bss_end+0xaf9cf8>
  900978:	72615000 	rsbvc	r5, r1, #0	; 0x0
  90097c:	74536573 	ldrvcb	r6, [r3], -#1395
  900980:	73757461 	cmnvc	r5, #1627389952	; 0x61000000
  900984:	743a745f 	ldrvct	r7, [r10], -#1119
  900988:	352c3128 	strcc	r3, [r12, -#296]!
  90098c:	31283d29 	teqcc	r8, r9, lsr #26
  900990:	0029342c 	eoreq	r3, r9, r12, lsr #8
  900994:	646c7462 	strvsbt	r7, [r12], -#1122
  900998:	69705f72 	ldmvsdb	r0!, {r1, r4, r5, r6, r8, r9, r10, r11, r12, lr}^
  90099c:	2000682e 	andcs	r6, r0, lr, lsr #16
  9009a0:	3528543a 	strcc	r5, [r8, -#1082]!
  9009a4:	3d29312c 	stfccs	f3, [r9, -#176]!
  9009a8:	425f6365 	submis	r6, pc, #-1811939327	; 0x94000001
  9009ac:	4c544f4f 	ldcmil	15, cr4, [r4], -#316
  9009b0:	303a5244 	eorccs	r5, r10, r4, asr #4
  9009b4:	505f632c 	subpls	r6, pc, r12, lsr #6
  9009b8:	4d415241 	sfmmi	f5, 2, [r1, -#260]
  9009bc:	2c313a53 	ldccs	10, cr3, [r1], -#332
  9009c0:	454b5f63 	strmib	r5, [r11, -#3939]
  9009c4:	4c454e52 	stcmil	14, cr4, [r5], -#328
  9009c8:	632c323a 	teqvs	r12, #-1610612733	; 0xa0000003
  9009cc:	4c49465f 	stcmil	6, cr4, [r9], -#380
  9009d0:	53595345 	cmppl	r9, #335544321	; 0x14000001
  9009d4:	632c333a 	teqvs	r12, #-402653184	; 0xe8000000
  9009d8:	444e455f 	strmib	r4, [lr], -#1375
  9009dc:	3b2c343a 	blcc	140dacc <__bss_end+0xafa160>
  9009e0:	6d6f6300 	stcvsl	3, cr6, [pc]
  9009e4:	3a745f70 	bcc	26187ac <__bss_end+0x1d04e40>
  9009e8:	2c352874 	ldccs	8, cr2, [r5], -#464
  9009ec:	283d2932 	ldmcsda	sp!, {r1, r4, r5, r8, r11, sp}
  9009f0:	29312c35 	ldmcsdb	r1!, {r0, r2, r4, r5, r10, r11, sp}
  9009f4:	543a2000 	ldrplt	r2, [r10]
  9009f8:	332c3528 	teqcc	r12, #167772160	; 0xa000000
  9009fc:	73653d29 	cmnvc	r5, #2624	; 0xa40
  900a00:	44535f64 	ldrmib	r5, [r3], -#3940
  900a04:	3a4d4152 	bcc	1c50f54 <__bss_end+0x133d5e8>
  900a08:	64732c30 	ldrvsbt	r2, [r3], -#3120
  900a0c:	4152535f 	cmpmi	r2, pc, asr r3
  900a10:	2c313a4d 	ldccs	10, cr3, [r1], -#308
  900a14:	465f6473 	undefined
  900a18:	4853414c 	ldmmida	r3, {r2, r3, r6, r8, lr}^
  900a1c:	732c323a 	teqvc	r12, #-1610612733	; 0xa0000003
  900a20:	46545f64 	ldrmib	r5, [r4], -r4, ror #30
  900a24:	333a5054 	teqcc	r10, #84	; 0x54
  900a28:	5f64732c 	swipl	0x0064732c
  900a2c:	50524553 	subpls	r4, r2, r3, asr r5
  900a30:	3a54524f 	bcc	1e15374 <__bss_end+0x1501a08>
  900a34:	64732c34 	ldrvsbt	r2, [r3], -#3124
  900a38:	5241505f 	subpl	r5, r1, #95	; 0x5f
  900a3c:	54524f50 	ldrplb	r4, [r2], -#3920
  900a40:	3b2c353a 	blcc	140df30 <__bss_end+0xafa5c4>
  900a44:	63727300 	cmnvs	r2, #0	; 0x0
  900a48:	7365645f 	cmnvc	r5, #1593835520	; 0x5f000000
  900a4c:	3a745f74 	bcc	2618824 <__bss_end+0x1d04eb8>
  900a50:	2c352874 	ldccs	8, cr2, [r5], -#464
  900a54:	283d2934 	ldmcsda	sp!, {r2, r4, r5, r8, r11, sp}
  900a58:	29332c35 	ldmcsdb	r3!, {r0, r2, r4, r5, r10, r11, sp}
  900a5c:	543a2000 	ldrplt	r2, [r10]
  900a60:	352c3528 	strcc	r3, [r12, -#1320]!
  900a64:	66653d29 	strvsbt	r3, [r5], -r9, lsr #26
  900a68:	3a414e5f 	bcc	19543ec <__bss_end+0x1040a80>
  900a6c:	5f662c30 	swipl	0x00662c30
  900a70:	43455253 	cmpmi	r5, #805306373	; 0x30000005
  900a74:	662c313a 	undefined
  900a78:	5f52525f 	swipl	0x0052525f
  900a7c:	414e4942 	cmpmi	lr, r2, asr #18
  900a80:	323a5952 	eorccs	r5, r10, #1343488	; 0x148000
  900a84:	70003b2c 	andvc	r3, r0, r12, lsr #22
  900a88:	5f74726f 	swipl	0x0074726f
  900a8c:	6d726f66 	ldcvsl	15, cr6, [r2, -#408]!
  900a90:	745f7461 	ldrvcb	r7, [pc], #461	; 900a98 <L_STACK_UNTOUCHED_MAGIC+0x9a4>
  900a94:	3528743a 	strcc	r7, [r8, -#1082]!
  900a98:	3d29362c 	stccc	6, cr3, [r9, -#176]!
  900a9c:	352c3528 	strcc	r3, [r12, -#1320]!
  900aa0:	61700029 	cmnvs	r0, r9, lsr #32
  900aa4:	736d6172 	cmnvc	sp, #-2147483620	; 0x8000001c
  900aa8:	743a745f 	ldrvct	r7, [r10], -#1119
  900aac:	372c3528 	strcc	r3, [r12, -r8, lsr #10]!
  900ab0:	35283d29 	strcc	r3, [r8, -#3369]!
  900ab4:	3d29382c 	stccc	8, cr3, [r9, -#176]!
  900ab8:	30343273 	eorccs	r3, r4, r3, ror r2
  900abc:	76656434 	undefined
  900ac0:	5f656369 	swipl	0x00656369
  900ac4:	3a43414d 	bcc	19d1000 <__bss_end+0x10bd694>
  900ac8:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900acc:	72613d29 	rsbvc	r3, r1, #2624	; 0xa40
  900ad0:	312c3028 	teqcc	r12, r8, lsr #32
  900ad4:	3b303b29 	blcc	150f780 <__bss_end+0xbfbe14>
  900ad8:	3b393931 	blcc	174efa4 <__bss_end+0xe3b638>
  900adc:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900ae0:	2c302c29 	ldccs	12, cr2, [r0], -#164
  900ae4:	30303631 	eorccs	r3, r0, r1, lsr r6
  900ae8:	7265733b 	rsbvc	r7, r5, #-335544320	; 0xec000000
  900aec:	5f726576 	swipl	0x00726576
  900af0:	283a5049 	ldmcsda	r10!, {r0, r3, r6, r12, lr}
  900af4:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900af8:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900afc:	36312c30 	undefined
  900b00:	733b3030 	teqvc	r11, #48	; 0x30
  900b04:	65767265 	ldrvsb	r7, [r6, -#613]!
  900b08:	414d5f72 	cmpmi	sp, r2, ror pc
  900b0c:	35283a43 	strcc	r3, [r8, -#2627]!
  900b10:	2c29392c 	stccs	9, cr3, [r9], -#176
  900b14:	30303233 	eorccs	r3, r0, r3, lsr r2
  900b18:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900b1c:	65643b30 	strvsb	r3, [r4, -#2864]!
  900b20:	65636976 	strvsb	r6, [r3, -#2422]!
  900b24:	3a50495f 	bcc	1d130a8 <__bss_end+0x13ff73c>
  900b28:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900b2c:	38342c29 	ldmccda	r4!, {r0, r3, r5, r10, r11, sp}
  900b30:	312c3030 	teqcc	r12, r0, lsr r0
  900b34:	3b303036 	blcc	150cc14 <__bss_end+0xbf92a8>
  900b38:	6e72656b 	cdpvs	5, 7, cr6, cr2, cr11, {3}
  900b3c:	705f6c65 	subvcs	r6, pc, r5, ror #24
  900b40:	3a687461 	bcc	231dccc <__bss_end+0x1a0a360>
  900b44:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900b48:	34362c29 	ldrcct	r2, [r6], -#3113
  900b4c:	312c3030 	teqcc	r12, r0, lsr r0
  900b50:	3b303036 	blcc	150cc30 <__bss_end+0xbf92c4>
  900b54:	656c6966 	strvsb	r6, [r12, -#2406]!
  900b58:	5f737973 	swipl	0x00737973
  900b5c:	68746170 	ldmvsda	r4!, {r4, r5, r6, r8, sp, lr}^
  900b60:	2c35283a 	ldccs	8, cr2, [r5], -#232
  900b64:	382c2939 	stmccda	r12!, {r0, r3, r4, r5, r8, r11, sp}
  900b68:	2c303030 	ldccs	0, cr3, [r0], -#192
  900b6c:	30303631 	eorccs	r3, r0, r1, lsr r6
  900b70:	72656b3b 	rsbvc	r6, r5, #60416	; 0xec00
  900b74:	5f6c656e 	swipl	0x006c656e
  900b78:	6c646d63 	stcvsl	13, cr6, [r4], -#396
  900b7c:	3a656e69 	bcc	225c528 <__bss_end+0x1948bbc>
  900b80:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900b84:	36392c29 	ldrcct	r2, [r9], -r9, lsr #24
  900b88:	312c3030 	teqcc	r12, r0, lsr r0
  900b8c:	3b303036 	blcc	150cc6c <__bss_end+0xbf9300>
  900b90:	72657375 	rsbvc	r7, r5, #-738197503	; 0xd4000001
  900b94:	7461645f 	strvcbt	r6, [r1], -#1119
  900b98:	3a315f61 	bcc	1558924 <__bss_end+0xc44fb8>
  900b9c:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900ba0:	31312c29 	teqcc	r1, r9, lsr #24
  900ba4:	2c303032 	ldccs	0, cr3, [r0], -#200
  900ba8:	30303631 	eorccs	r3, r0, r1, lsr r6
  900bac:	6573753b 	ldrvsb	r7, [r3, -#1339]!
  900bb0:	61645f72 	cmnvs	r4, r2, ror pc
  900bb4:	325f6174 	subccs	r6, pc, #29	; 0x1d
  900bb8:	2c35283a 	ldccs	8, cr2, [r5], -#232
  900bbc:	312c2939 	teqcc	r12, r9, lsr r9
  900bc0:	30303832 	eorccs	r3, r0, r2, lsr r8
  900bc4:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900bc8:	73753b30 	cmnvc	r5, #49152	; 0xc000
  900bcc:	645f7265 	ldrvsb	r7, [pc], #265	; 900bd4 <L_STACK_UNTOUCHED_MAGIC+0xae0>
  900bd0:	5f617461 	swipl	0x00617461
  900bd4:	35283a33 	strcc	r3, [r8, -#2611]!
  900bd8:	2c29392c 	stccs	9, cr3, [r9], -#176
  900bdc:	30343431 	eorccs	r3, r4, r1, lsr r4
  900be0:	36312c30 	undefined
  900be4:	753b3030 	ldrvc	r3, [r11, -#48]!
  900be8:	5f726573 	swipl	0x00726573
  900bec:	61746164 	cmnvs	r4, r4, ror #2
  900bf0:	283a345f 	ldmcsda	r10!, {r0, r1, r2, r3, r4, r6, r10, r12, sp}
  900bf4:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900bf8:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900bfc:	312c3030 	teqcc	r12, r0, lsr r0
  900c00:	3b303036 	blcc	150cce0 <__bss_end+0xbf9374>
  900c04:	72657375 	rsbvc	r7, r5, #-738197503	; 0xd4000001
  900c08:	7461645f 	strvcbt	r6, [r1], -#1119
  900c0c:	3a355f61 	bcc	1658998 <__bss_end+0xd4502c>
  900c10:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900c14:	37312c29 	ldrcc	r2, [r1, -r9, lsr #24]!
  900c18:	2c303036 	ldccs	0, cr3, [r0], -#216
  900c1c:	30303631 	eorccs	r3, r0, r1, lsr r6
  900c20:	58414d3b 	stmplda	r1, {r0, r1, r3, r4, r5, r8, r10, r11, lr}^
  900c24:	5254535f 	subpls	r5, r4, #2080374785	; 0x7c000001
  900c28:	4e454c5f 	mcrmi	12, 2, r4, cr5, cr15, {2}
  900c2c:	2c30283a 	ldccs	8, cr2, [r0], -#232