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

  9007e8:	3a524f52 	bcc	1d94538 <__bss_end+0x147f28c>
  9007ec:	003b2c31 	eoreqs	r2, r11, r1, lsr r12
  9007f0:	5f433249 	swipl	0x00433249
  9007f4:	55544552 	ldrplb	r4, [r4, -#1362]
  9007f8:	743a4e52 	ldrvct	r4, [r10], -#3666
  9007fc:	322c3528 	eorcc	r3, r12, #167772160	; 0xa000000
  900800:	35283d29 	strcc	r3, [r8, -#3369]!
  900804:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900808:	37326d64 	ldrcc	r6, [r2, -r4, ror #26]!
  90080c:	65722d30 	ldrvsb	r2, [r2, -#3376]!
  900810:	74736967 	ldrvcbt	r6, [r3], -#2407
  900814:	2e737265 	cdpcs	2, 7, cr7, cr3, cr5, {3}
  900818:	4e450068 	cdpmi	0, 4, cr0, cr5, cr8, {3}
  90081c:	3a595254 	bcc	1f55174 <__bss_end+0x163fec8>
  900820:	2c302874 	ldccs	8, cr2, [r0], -#464
  900824:	3d293132 	stfccs	f3, [r9, -#200]!
  900828:	322c3028 	eorcc	r3, r12, #40	; 0x28
  90082c:	2a3d2932 	bcs	184acfc <__bss_end+0xf35a50>
  900830:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900834:	663d2933 	undefined
  900838:	312c3028 	teqcc	r12, r8, lsr #32
  90083c:	62002939 	andvs	r2, r0, #933888	; 0xe4000
  900840:	73746f6f 	cmnvc	r4, #444	; 0x1bc
  900844:	70617274 	rsbvc	r7, r1, r4, ror r2
  900848:	3028463a 	eorcc	r4, r8, r10, lsr r6
  90084c:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900850:	746e6500 	strvcbt	r6, [lr], -#1280
  900854:	615f7972 	cmpvs	pc, r2, ror r9
  900858:	3a726464 	bcc	25999f0 <__bss_end+0x1c84744>
  90085c:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900860:	6e002931 	mcrvs	9, 0, r2, cr0, cr1, {1}
  900864:	625f6d75 	subvss	r6, pc, #7488	; 0x1d40
  900868:	73657479 	cmnvc	r5, #2030043136	; 0x79000000
  90086c:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900870:	73002934 	tstvc	r0, #851968	; 0xd0000
  900874:	74726174 	ldrvcbt	r6, [r2], -#372
  900878:	2c30283a 	ldccs	8, cr2, [r0], -#232
  90087c:	65002934 	strvs	r2, [r0, -#2356]
  900880:	283a646e 	ldmcsda	r10!, {r1, r2, r3, r5, r6, r10, sp, lr}
  900884:	29342c30 	ldmcsdb	r4!, {r4, r5, r10, r11, sp}
  900888:	283a6900 	ldmcsda	r10!, {r8, r11, sp, lr}
  90088c:	29312c30 	ldmcsdb	r1!, {r4, r5, r10, r11, sp}
  900890:	5f736600 	swipl	0x00736600
  900894:	72646461 	rsbvc	r6, r4, #1627389952	; 0x61000000
  900898:	2c30283a 	ldccs	8, cr2, [r0], -#232
  90089c:	3d293432 	stccc	4, cr3, [r9, -#200]!
  9008a0:	2c30282a 	ldccs	8, cr2, [r0], -#168
  9008a4:	72002939 	andvc	r2, r0, #933888	; 0xe4000
  9008a8:	64615f73 	strvsbt	r5, [r1], -#3955
  9008ac:	283a7264 	ldmcsda	r10!, {r2, r5, r6, r9, r12, sp, lr}
  9008b0:	34322c30 	ldrcct	r2, [r2], -#3120
  9008b4:	756e0029 	strvcb	r0, [lr, -#41]!
  9008b8:	36315f6d 	ldrcct	r5, [r1], -sp, ror #30
  9008bc:	5f746962 	swipl	0x00746962
  9008c0:	64726f77 	ldrvsbt	r6, [r2], -#3959
  9008c4:	30283a73 	eorcc	r3, r8, r3, ror r10
  9008c8:	0029342c 	eoreq	r3, r9, r12, lsr #8
  9008cc:	706d6574 	rsbvc	r6, sp, r4, ror r5
  9008d0:	2c30283a 	ldccs	8, cr2, [r0], -#232
  9008d4:	62002939 	andvs	r2, r0, #933888	; 0xe4000
  9008d8:	72646c74 	rsbvc	r6, r4, #29696	; 0x7400
  9008dc:	2e69755f 	mcrcs	5, 3, r7, cr9, cr15, {2}
  9008e0:	79740063 	ldmvcdb	r4!, {r0, r1, r5, r6}^
  9008e4:	2e736570 	mrccs	5, 3, r6, cr3, cr0, {3}
  9008e8:	72700068 	rsbvcs	r0, r0, #104	; 0x68
  9008ec:	6572676f 	ldrvsb	r6, [r2, -#1903]!
  9008f0:	6d5f7373 	ldcvsl	3, cr7, [pc, -#460]
  9008f4:	72657465 	rsbvc	r7, r5, #1694498816	; 0x65000000
  9008f8:	6142435f 	cmpvs	r2, pc, asr r3
  9008fc:	745f6b63 	ldrvcb	r6, [pc], #b63	; 900904 <L_STACK_UNTOUCHED_MAGIC+0x818>
  900900:	3128743a 	teqcc	r8, r10, lsr r4
  900904:	3d29312c 	stfccs	f3, [r9, -#176]!
  900908:	322c3128 	eorcc	r3, r12, #10	; 0xa
  90090c:	282a3d29 	stmcsda	r10!, {r0, r3, r5, r8, r10, r11, r12, sp}
  900910:	29332c31 	ldmcsdb	r3!, {r0, r4, r5, r10, r11, sp}
  900914:	3028663d 	eorcc	r6, r8, sp, lsr r6
  900918:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  90091c:	543a2000 	ldrplt	r2, [r10]
  900920:	342c3128 	strcct	r3, [r12], -#296
  900924:	4c653d29 	stcmil	13, cr3, [r5], -#164
  900928:	5f44414f 	swipl	0x0044414f
  90092c:	303a4b4f 	eorccs	r4, r10, pc, asr #22
  900930:	414f4c2c 	cmpmi	pc, r12, lsr #24
  900934:	494d5f44 	stmmidb	sp, {r2, r6, r8, r9, r10, r11, r12, lr}^
  900938:	4e495353 	mcrmi	3, 2, r5, cr9, cr3, {2}
  90093c:	42435f47 	submi	r5, r3, #284	; 0x11c
  900940:	3a4b4341 	bcc	1bd164c <__bss_end+0x12bc3a0>
  900944:	4f4c2c31 	swimi	0x004c2c31
  900948:	495f4441 	ldmmidb	pc, {r0, r6, r10, lr}^
  90094c:	4c41564e 	stcmil	6, cr5, [r1], -#312
  900950:	465f4449 	ldrmib	r4, [pc], -r9, asr #8
  900954:	414d524f 	cmpmi	sp, pc, asr #4
  900958:	2c323a54 	ldccs	10, cr3, [r2], -#336
  90095c:	44414f4c 	strmib	r4, [r1], -#3916
  900960:	564e495f 	undefined
  900964:	44494c41 	strmib	r4, [r9], -#3137
  900968:	4b48435f 	blmi	1b116ec <__bss_end+0x11fc440>
  90096c:	3a4d5553 	bcc	1c55ec0 <__bss_end+0x1340c14>
  900970:	003b2c33 	eoreqs	r2, r11, r3, lsr r12
  900974:	73726150 	cmnvc	r2, #20	; 0x14
  900978:	61745365 	cmnvs	r4, r5, ror #6
  90097c:	5f737574 	swipl	0x00737574
  900980:	28743a74 	ldmcsda	r4!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900984:	29352c31 	ldmcsdb	r5!, {r0, r4, r5, r10, r11, sp}
  900988:	2c31283d 	ldccs	8, cr2, [r1], -#244
  90098c:	62002934 	andvs	r2, r0, #851968	; 0xd0000
  900990:	72646c74 	rsbvc	r6, r4, #29696	; 0x7400
  900994:	2e69705f 	mcrcs	0, 3, r7, cr9, cr15, {2}
  900998:	3a200068 	bcc	1100b40 <__bss_end+0x7eb894>
  90099c:	2c352854 	ldccs	8, cr2, [r5], -#336
  9009a0:	653d2931 	ldrvs	r2, [sp, -#2353]!
  9009a4:	4f425f63 	swimi	0x00425f63
  9009a8:	444c544f 	strmib	r5, [r12], -#1103
  9009ac:	2c303a52 	ldccs	10, cr3, [r0], -#328
  9009b0:	41505f63 	cmpmi	r0, r3, ror #30
  9009b4:	534d4152 	cmppl	sp, #-2147483628	; 0x80000014
  9009b8:	632c313a 	teqvs	r12, #-2147483634	; 0x8000000e
  9009bc:	52454b5f 	subpl	r4, r5, #97280	; 0x17c00
  9009c0:	3a4c454e 	bcc	1c11f00 <__bss_end+0x12fcc54>
  9009c4:	5f632c32 	swipl	0x00632c32
  9009c8:	454c4946 	strmib	r4, [r12, -#2374]
  9009cc:	3a535953 	bcc	1dd6f20 <__bss_end+0x14c1c74>
  9009d0:	5f632c33 	swipl	0x00632c33
  9009d4:	3a444e45 	bcc	1a142f0 <__bss_end+0x10ff044>
  9009d8:	003b2c34 	eoreqs	r2, r11, r4, lsr r12
  9009dc:	706d6f63 	rsbvc	r6, sp, r3, ror #30
  9009e0:	743a745f 	ldrvct	r7, [r10], -#1119
  9009e4:	322c3528 	eorcc	r3, r12, #167772160	; 0xa000000
  9009e8:	35283d29 	strcc	r3, [r8, -#3369]!
  9009ec:	0029312c 	eoreq	r3, r9, r12, lsr #2
  9009f0:	28543a20 	ldmcsda	r4, {r5, r9, r11, r12, sp}^
  9009f4:	29332c35 	ldmcsdb	r3!, {r0, r2, r4, r5, r10, r11, sp}
  9009f8:	6473653d 	ldrvsbt	r6, [r3], -#1341
  9009fc:	5244535f 	subpl	r5, r4, #2080374785	; 0x7c000001
  900a00:	303a4d41 	eorccs	r4, r10, r1, asr #26
  900a04:	5f64732c 	swipl	0x0064732c
  900a08:	4d415253 	sfmmi	f5, 2, [r1, -#332]
  900a0c:	732c313a 	teqvc	r12, #-2147483634	; 0x8000000e
  900a10:	4c465f64 	stcmil	15, cr5, [r6], -#400
  900a14:	3a485341 	bcc	1b15720 <__bss_end+0x1200474>
  900a18:	64732c32 	ldrvsbt	r2, [r3], -#3122
  900a1c:	5446545f 	strplb	r5, [r6], -#1119
  900a20:	2c333a50 	ldccs	10, cr3, [r3], -#320
  900a24:	535f6473 	cmppl	pc, #1929379840	; 0x73000000
  900a28:	4f505245 	swimi	0x00505245
  900a2c:	343a5452 	ldrcct	r5, [r10], -#1106
  900a30:	5f64732c 	swipl	0x0064732c
  900a34:	50524150 	subpls	r4, r2, r0, asr r1
  900a38:	3a54524f 	bcc	1e1537c <__bss_end+0x15000d0>
  900a3c:	003b2c35 	eoreqs	r2, r11, r5, lsr r12
  900a40:	5f637273 	swipl	0x00637273
  900a44:	74736564 	ldrvcbt	r6, [r3], -#1380
  900a48:	743a745f 	ldrvct	r7, [r10], -#1119
  900a4c:	342c3528 	strcct	r3, [r12], -#1320
  900a50:	35283d29 	strcc	r3, [r8, -#3369]!
  900a54:	0029332c 	eoreq	r3, r9, r12, lsr #6
  900a58:	28543a20 	ldmcsda	r4, {r5, r9, r11, r12, sp}^
  900a5c:	29352c35 	ldmcsdb	r5!, {r0, r2, r4, r5, r10, r11, sp}
  900a60:	5f66653d 	swipl	0x0066653d
  900a64:	303a414e 	eorccs	r4, r10, lr, asr #2
  900a68:	535f662c 	cmppl	pc, #46137344	; 0x2c00000
  900a6c:	3a434552 	bcc	19d1fbc <__bss_end+0x10bcd10>
  900a70:	5f662c31 	swipl	0x00662c31
  900a74:	425f5252 	submis	r5, pc, #536870917	; 0x20000005
  900a78:	52414e49 	subpl	r4, r1, #1168	; 0x490
  900a7c:	2c323a59 	ldccs	10, cr3, [r2], -#356
  900a80:	6f70003b 	swivs	0x0070003b
  900a84:	665f7472 	undefined
  900a88:	616d726f 	cmnvs	sp, pc, ror #4
  900a8c:	3a745f74 	bcc	2618864 <__bss_end+0x1d035b8>
  900a90:	2c352874 	ldccs	8, cr2, [r5], -#464
  900a94:	283d2936 	ldmcsda	sp!, {r1, r2, r4, r5, r8, r11, sp}
  900a98:	29352c35 	ldmcsdb	r5!, {r0, r2, r4, r5, r10, r11, sp}
  900a9c:	72617000 	rsbvc	r7, r1, #0	; 0x0
  900aa0:	5f736d61 	swipl	0x00736d61
  900aa4:	28743a74 	ldmcsda	r4!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900aa8:	29372c35 	ldmcsdb	r7!, {r0, r2, r4, r5, r10, r11, sp}
  900aac:	2c35283d 	ldccs	8, cr2, [r5], -#244
  900ab0:	733d2938 	teqvc	sp, #917504	; 0xe0000
  900ab4:	34303432 	ldrcct	r3, [r0], -#1074
  900ab8:	69766564 	ldmvsdb	r6!, {r2, r5, r6, r8, r10, sp, lr}^
  900abc:	4d5f6563 	ldcmil	5, cr6, [pc, -#396]
  900ac0:	283a4341 	ldmcsda	r10!, {r0, r6, r8, r9, lr}
  900ac4:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900ac8:	2872613d 	ldmcsda	r2!, {r0, r2, r3, r4, r5, r8, sp, lr}^
  900acc:	29312c30 	ldmcsdb	r1!, {r4, r5, r10, r11, sp}
  900ad0:	313b303b 	teqcc	r11, r11, lsr r0
  900ad4:	283b3939 	ldmcsda	r11!, {r0, r3, r4, r5, r8, r11, r12, sp}
  900ad8:	29322c30 	ldmcsdb	r2!, {r4, r5, r10, r11, sp}
  900adc:	312c302c 	teqcc	r12, r12, lsr #32
  900ae0:	3b303036 	blcc	150cbc0 <__bss_end+0xbf7914>
  900ae4:	76726573 	undefined
  900ae8:	495f7265 	ldmmidb	pc, {r0, r2, r5, r6, r9, r12, sp, lr}^
  900aec:	35283a50 	strcc	r3, [r8, -#2640]!
  900af0:	2c29392c 	stccs	9, cr3, [r9], -#176
  900af4:	30303631 	eorccs	r3, r0, r1, lsr r6
  900af8:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900afc:	65733b30 	ldrvsb	r3, [r3, -#2864]!
  900b00:	72657672 	rsbvc	r7, r5, #119537664	; 0x7200000
  900b04:	43414d5f 	cmpmi	r1, #6080	; 0x17c0
  900b08:	2c35283a 	ldccs	8, cr2, [r5], -#232
  900b0c:	332c2939 	teqcc	r12, #933888	; 0xe4000
  900b10:	2c303032 	ldccs	0, cr3, [r0], -#200
  900b14:	30303631 	eorccs	r3, r0, r1, lsr r6
  900b18:	7665643b 	undefined
  900b1c:	5f656369 	swipl	0x00656369
  900b20:	283a5049 	ldmcsda	r10!, {r0, r3, r6, r12, lr}
  900b24:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900b28:	3038342c 	eorccs	r3, r8, r12, lsr #8
  900b2c:	36312c30 	undefined
  900b30:	6b3b3030 	blvs	17ccbf8 <__bss_end+0xeb794c>
  900b34:	656e7265 	strvsb	r7, [lr, -#613]!
  900b38:	61705f6c 	cmnvs	r0, r12, ror #30
  900b3c:	283a6874 	ldmcsda	r10!, {r2, r4, r5, r6, r11, sp, lr}
  900b40:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900b44:	3034362c 	eorccs	r3, r4, r12, lsr #12
  900b48:	36312c30 	undefined
  900b4c:	663b3030 	undefined
  900b50:	73656c69 	cmnvc	r5, #26880	; 0x6900
  900b54:	705f7379 	subvcs	r7, pc, r9, ror r3
  900b58:	3a687461 	bcc	231dce4 <__bss_end+0x1a08a38>
  900b5c:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900b60:	30382c29 	eorccs	r2, r8, r9, lsr #24
  900b64:	312c3030 	teqcc	r12, r0, lsr r0
  900b68:	3b303036 	blcc	150cc48 <__bss_end+0xbf799c>
  900b6c:	6e72656b 	cdpvs	5, 7, cr6, cr2, cr11, {3}
  900b70:	635f6c65 	cmpvs	pc, #25856	; 0x6500
  900b74:	696c646d 	stmvsdb	r12!, {r0, r2, r3, r5, r6, r10, sp, lr}^
  900b78:	283a656e 	ldmcsda	r10!, {r1, r2, r3, r5, r6, r8, r10, sp, lr}
  900b7c:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900b80:	3036392c 	eorccs	r3, r6, r12, lsr #18
  900b84:	36312c30 	undefined
  900b88:	753b3030 	ldrvc	r3, [r11, -#48]!
  900b8c:	5f726573 	swipl	0x00726573
  900b90:	61746164 	cmnvs	r4, r4, ror #2
  900b94:	283a315f 	ldmcsda	r10!, {r0, r1, r2, r3, r4, r6, r8, r12, sp}
  900b98:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900b9c:	3231312c 	eorccs	r3, r1, #11	; 0xb
  900ba0:	312c3030 	teqcc	r12, r0, lsr r0
  900ba4:	3b303036 	blcc	150cc84 <__bss_end+0xbf79d8>
  900ba8:	72657375 	rsbvc	r7, r5, #-738197503	; 0xd4000001
  900bac:	7461645f 	strvcbt	r6, [r1], -#1119
  900bb0:	3a325f61 	bcc	159893c <__bss_end+0xc83690>
  900bb4:	392c3528 	stmccdb	r12!, {r3, r5, r8, r10, r12, sp}
  900bb8:	32312c29 	eorccs	r2, r1, #10496	; 0x2900
  900bbc:	2c303038 	ldccs	0, cr3, [r0], -#224
  900bc0:	30303631 	eorccs	r3, r0, r1, lsr r6
  900bc4:	6573753b 	ldrvsb	r7, [r3, -#1339]!
  900bc8:	61645f72 	cmnvs	r4, r2, ror pc
  900bcc:	335f6174 	cmpcc	pc, #29	; 0x1d
  900bd0:	2c35283a 	ldccs	8, cr2, [r5], -#232
  900bd4:	312c2939 	teqcc	r12, r9, lsr r9
  900bd8:	30303434 	eorccs	r3, r0, r4, lsr r4
  900bdc:	3036312c 	eorccs	r3, r6, r12, lsr #2
  900be0:	73753b30 	cmnvc	r5, #49152	; 0xc000
  900be4:	645f7265 	ldrvsb	r7, [pc], #265	; 900bec <L_STACK_UNTOUCHED_MAGIC+0xb00>
  900be8:	5f617461 	swipl	0x00617461
  900bec:	35283a34 	strcc	r3, [r8, -#2612]!
  900bf0:	2c29392c 	stccs	9, cr3, [r9], -#176
  900bf4:	30303631 	eorccs	r3, r0, r1, lsr r6
  900bf8:	36312c30 	undefined
  900bfc:	753b3030 	ldrvc	r3, [r11, -#48]!
  900c00:	5f726573 	swipl	0x00726573
  900c04:	61746164 	cmnvs	r4, r4, ror #2
  900c08:	283a355f 	ldmcsda	r10!, {r0, r1, r2, r3, r4, r6, r8, r10, r12, sp}
  900c0c:	29392c35 	ldmcsdb	r9!, {r0, r2, r4, r5, r10, r11, sp}
  900c10:	3637312c 	ldrcct	r3, [r7], -r12, lsr #2
  900c14:	312c3030 	teqcc	r12, r0, lsr r0
  900c18:	3b303036 	blcc	150ccf8 <__bss_end+0xbf7a4c>
  900c1c:	5f58414d 	swipl	0x0058414d
  900c20:	5f525453 	swipl	0x00525453
  900c24:	3a4e454c 	bcc	1c9215c <__bss_end+0x137ceb0>
  900c28:	312c3028 	teqcc	r12, r8, lsr #32
  900c2c:	39312c29 	ldmccdb	r1!, {r0, r3, r5, r10, r11, sp}
  900c30:	2c303032 	ldccs	0, cr3, [r0], -#200
  900c34:	3b3b3233 	blcc	17cd508 <__bss_end+0xeb825c>
  900c38:	616c6600 	cmnvs	r12, r0, lsl #12
  900c3c:	682e6873 	stmvsda	lr!, {r0, r1, r4, r5, r6, r11, sp, lr}
  900c40:	74654700 	strvcbt	r4, [r5], -#1792
  900c44:	65747942 	ldrvsb	r7, [r4, -#2370]!