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

  900c30:	312c2931 	teqcc	r12, r1, lsr r9
  900c34:	30303239 	eorccs	r3, r0, r9, lsr r2
  900c38:	3b32332c 	blcc	158d8f0 <__bss_end+0xc79f84>
  900c3c:	6c66003b 	stcvsl	0, cr0, [r6], -#236
  900c40:	2e687361 	cdpcs	3, 6, cr7, cr8, cr1, {3}
  900c44:	65470068 	strvsb	r0, [r7, -#104]
  900c48:	74794274 	ldrvcbt	r4, [r9], -#628
  900c4c:	6c614365 	stcvsl	3, cr4, [r1], -#404
  900c50:	6361426c 	cmnvs	r1, #-1073741818	; 0xc0000006
  900c54:	3a745f6b 	bcc	2618a08 <__bss_end+0x1d0509c>
  900c58:	2c362874 	ldccs	8, cr2, [r6], -#464
  900c5c:	283d2931 	ldmcsda	sp!, {r0, r4, r5, r8, r11, sp}
  900c60:	29322c36 	ldmcsdb	r2!, {r1, r2, r4, r5, r10, r11, sp}
  900c64:	36282a3d 	undefined
  900c68:	3d29332c 	stccc	3, cr3, [r9, -#176]!
  900c6c:	2c302866 	ldccs	8, cr2, [r0], -#408
  900c70:	00293131 	eoreq	r3, r9, r1, lsr r1
  900c74:	56746547 	ldrplbt	r6, [r4], -r7, asr #10
  900c78:	74416c61 	strvcb	r6, [r1], -#3169
  900c7c:	72646441 	rsbvc	r6, r4, #1090519040	; 0x41000000
  900c80:	6c6c6143 	stfvse	f6, [r12], -#268
  900c84:	6b636142 	blvs	21d9194 <__bss_end+0x18c5828>
  900c88:	743a745f 	ldrvct	r7, [r10], -#1119
  900c8c:	342c3628 	strcct	r3, [r12], -#1576
  900c90:	36283d29 	strcct	r3, [r8], -r9, lsr #26
  900c94:	3d29352c 	stccc	5, cr3, [r9, -#176]!
  900c98:	2c36282a 	ldccs	8, cr2, [r6], -#168
  900c9c:	663d2936 	undefined
  900ca0:	312c3028 	teqcc	r12, r8, lsr #32
  900ca4:	50002939 	andpl	r2, r0, r9, lsr r9
  900ca8:	61567475 	cmpvs	r6, r5, ror r4
  900cac:	4174416c 	cmnmi	r4, r12, ror #2
  900cb0:	43726464 	cmnmi	r2, #1677721600	; 0x64000000
  900cb4:	426c6c61 	rsbmi	r6, r12, #24832	; 0x6100
  900cb8:	5f6b6361 	swipl	0x006b6361
  900cbc:	28743a74 	ldmcsda	r4!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900cc0:	29372c36 	ldmcsdb	r7!, {r1, r2, r4, r5, r10, r11, sp}
  900cc4:	2c36283d 	ldccs	8, cr2, [r6], -#244
  900cc8:	2a3d2938 	bcs	184b1b0 <__bss_end+0xf37844>
  900ccc:	392c3628 	stmccdb	r12!, {r3, r5, r9, r10, r12, sp}
  900cd0:	28663d29 	stmcsda	r6!, {r0, r3, r5, r8, r10, r11, r12, sp}^
  900cd4:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900cd8:	65760029 	ldrvsb	r0, [r6, -#41]!
  900cdc:	6f697372 	swivs	0x00697372
  900ce0:	00682e6e 	rsbeq	r2, r8, lr, ror #28
  900ce4:	43706d70 	cmnmi	r0, #7168	; 0x1c00
  900ce8:	69666e6f 	stmvsdb	r6!, {r0, r1, r2, r3, r5, r6, r9, r10, r11, sp, lr}^
  900cec:	00682e67 	rsbeq	r2, r8, r7, ror #28
  900cf0:	61766e69 	cmnvs	r6, r9, ror #28
  900cf4:	5f64696c 	swipl	0x0064696c
  900cf8:	6d6d6f63 	stcvsl	15, cr6, [sp, -#396]!
  900cfc:	3a646e61 	bcc	221c688 <__bss_end+0x1908d1c>
  900d00:	2c302866 	ldccs	8, cr2, [r0], -#408
  900d04:	00293931 	eoreq	r3, r9, r1, lsr r9
  900d08:	676f7270 	undefined
  900d0c:	73736572 	cmnvc	r3, #478150656	; 0x1c800000
  900d10:	74656d5f 	strvcbt	r6, [r5], -#3423
  900d14:	663a7265 	ldrvst	r7, [r10], -r5, ror #4
  900d18:	312c3028 	teqcc	r12, r8, lsr #32
  900d1c:	63002939 	tstvs	r0, #933888	; 0xe4000
  900d20:	7261656c 	rsbvc	r6, r1, #452984832	; 0x1b000000
  900d24:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900d28:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900d2c:	5f6f6400 	swipl	0x006f6400
  900d30:	61726170 	cmnvs	r2, r0, ror r1
  900d34:	696c5f6d 	stmvsdb	r12!, {r0, r2, r3, r5, r6, r8, r9, r10, r11, r12, lr}^
  900d38:	6e697473 	mcrvs	4, 3, r7, cr9, cr3, {3}
  900d3c:	28463a67 	stmcsda	r6, {r0, r1, r2, r5, r6, r9, r11, r12, sp}^
  900d40:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900d44:	69660029 	stmvsdb	r6!, {r0, r3, r5}^
  900d48:	705f646e 	subvcs	r6, pc, lr, ror #8
  900d4c:	6d617261 	sfmvs	f7, 2, [r1, -#388]!
  900d50:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900d54:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900d58:	61726170 	cmnvs	r2, r0, ror r1
  900d5c:	28703a6d 	ldmcsda	r0!, {r0, r2, r3, r5, r6, r9, r11, r12, sp}^
  900d60:	31322c30 	teqcc	r2, r0, lsr r12
  900d64:	282a3d29 	stmcsda	r10!, {r0, r3, r5, r8, r10, r11, r12, sp}
  900d68:	29322c30 	ldmcsdb	r2!, {r4, r5, r10, r11, sp}
  900d6c:	6e696c00 	cdpvs	12, 6, cr6, cr9, cr0, {0}
  900d70:	28703a65 	ldmcsda	r0!, {r0, r2, r5, r6, r9, r11, r12, sp}^
  900d74:	31322c30 	teqcc	r2, r0, lsr r12
  900d78:	6f660029 	swivs	0x00660029
  900d7c:	3a646e75 	bcc	221c758 <__bss_end+0x1908dec>
  900d80:	312c3028 	teqcc	r12, r8, lsr #32
  900d84:	5f6c0029 	swipl	0x006c0029
  900d88:	65646e69 	strvsb	r6, [r4, -#3689]!
  900d8c:	30283a78 	eorcc	r3, r8, r8, ror r10
  900d90:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900d94:	30283a6a 	eorcc	r3, r8, r10, ror #20
  900d98:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900d9c:	30283a6b 	eorcc	r3, r8, r11, ror #20
  900da0:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900da4:	735f6f64 	cmpvc	pc, #400	; 0x190
  900da8:	635f7465 	cmpvs	pc, #1694498816	; 0x65000000
  900dac:	616d6d6f 	cmnvs	sp, pc, ror #26
  900db0:	663a646e 	ldrvst	r6, [r10], -lr, ror #8
  900db4:	312c3028 	teqcc	r12, r8, lsr #32
  900db8:	70002939 	andvc	r2, r0, r9, lsr r9
  900dbc:	6d617261 	sfmvs	f7, 2, [r1, -#388]!
  900dc0:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900dc4:	3d293232 	sfmcc	f3, 4, [r9, -#200]!
  900dc8:	30287261 	eorcc	r7, r8, r1, ror #4
  900dcc:	3b29312c 	blcc	134d284 <__bss_end+0xa39918>
  900dd0:	39393b30 	ldmccdb	r9!, {r4, r5, r8, r9, r11, r12, sp}
  900dd4:	2c30283b 	ldccs	8, cr2, [r0], -#236
  900dd8:	76002932 	undefined
  900ddc:	283a6c61 	ldmcsda	r10!, {r0, r5, r6, r10, r11, sp, lr}
  900de0:	31322c30 	teqcc	r2, r0, lsr r12
  900de4:	6f640029 	swivs	0x00640029
  900de8:	6172655f 	cmnvs	r2, pc, asr r5
  900dec:	665f6573 	undefined
  900df0:	6873616c 	ldmvsda	r3!, {r2, r3, r5, r6, r8, sp, lr}^
  900df4:	646d635f 	strvsbt	r6, [sp], -#863
  900df8:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900dfc:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900e00:	72617000 	rsbvc	r7, r1, #0	; 0x0
  900e04:	283a6d61 	ldmcsda	r10!, {r0, r5, r6, r8, r10, r11, sp, lr}
  900e08:	32322c30 	eorccs	r2, r2, #12288	; 0x3000
  900e0c:	69660029 	stmvsdb	r6!, {r0, r3, r5}^
  900e10:	635f646e 	cmpvs	pc, #1845493760	; 0x6e000000
  900e14:	3a706d6f 	bcc	251c3d8 <__bss_end+0x1c08a6c>
  900e18:	2c302866 	ldccs	8, cr2, [r0], -#408
  900e1c:	63002931 	tstvs	r0, #802816	; 0xc4000
  900e20:	3a706d6f 	bcc	251c3e4 <__bss_end+0x1c08a78>
  900e24:	2c302870 	ldccs	8, cr2, [r0], -#448
  900e28:	3d293332 	stccc	3, cr3, [r9, -#200]!
  900e2c:	2c35282a 	ldccs	8, cr2, [r5], -#168
  900e30:	66002932 	undefined
  900e34:	5f646e69 	swipl	0x00646e69
  900e38:	3a637273 	bcc	21dd80c <__bss_end+0x18c9ea0>
  900e3c:	2c302866 	ldccs	8, cr2, [r0], -#408
  900e40:	73002931 	tstvc	r0, #802816	; 0xc4000
  900e44:	703a6372 	eorvcs	r6, r10, r2, ror r3
  900e48:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900e4c:	2a3d2934 	bcs	184b324 <__bss_end+0xf379b8>
  900e50:	342c3528 	strcct	r3, [r12], -#1320
  900e54:	69660029 	stmvsdb	r6!, {r0, r3, r5}^
  900e58:	645f646e 	ldrvsb	r6, [pc], #46e	; 900e60 <L_STACK_UNTOUCHED_MAGIC+0xd6c>
  900e5c:	3a747365 	bcc	261dbf8 <__bss_end+0x1d0a28c>
  900e60:	2c302866 	ldccs	8, cr2, [r0], -#408
  900e64:	64002931 	strvs	r2, [r0], -#2353
  900e68:	3a747365 	bcc	261dc04 <__bss_end+0x1d0a298>
  900e6c:	2c302870 	ldccs	8, cr2, [r0], -#448
  900e70:	00293432 	eoreq	r3, r9, r2, lsr r4
  900e74:	646e6966 	strvsbt	r6, [lr], -#2406
  900e78:	726f665f 	rsbvc	r6, pc, #99614720	; 0x5f00000
  900e7c:	3a74616d 	bcc	2619438 <__bss_end+0x1d05acc>
  900e80:	2c302866 	ldccs	8, cr2, [r0], -#408
  900e84:	66002931 	undefined
  900e88:	616d726f 	cmnvs	sp, pc, ror #4
  900e8c:	28703a74 	ldmcsda	r0!, {r2, r4, r5, r6, r9, r11, r12, sp}^
  900e90:	35322c30 	ldrcc	r2, [r2, -#3120]!
  900e94:	282a3d29 	stmcsda	r10!, {r0, r3, r5, r8, r10, r11, r12, sp}
  900e98:	29362c35 	ldmcsdb	r6!, {r0, r2, r4, r5, r10, r11, sp}
  900e9c:	5f6f6400 	swipl	0x006f6400
  900ea0:	79706f63 	ldmvcdb	r0!, {r0, r1, r5, r6, r8, r9, r10, r11, sp, lr}^
  900ea4:	6d6f635f 	stcvsl	3, cr6, [pc, -#380]!
  900ea8:	646e616d 	strvsbt	r6, [lr], -#365
  900eac:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900eb0:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900eb4:	6d6f6300 	stcvsl	3, cr6, [pc]
  900eb8:	35283a70 	strcc	r3, [r8, -#2672]!
  900ebc:	0029322c 	eoreq	r3, r9, r12, lsr #4
  900ec0:	3a637273 	bcc	21dd894 <__bss_end+0x18c9f28>
  900ec4:	342c3528 	strcct	r3, [r12], -#1320
  900ec8:	65640029 	strvsb	r0, [r4, -#41]!
  900ecc:	283a7473 	ldmcsda	r10!, {r0, r1, r4, r5, r6, r10, r12, sp, lr}
  900ed0:	29342c35 	ldmcsdb	r4!, {r0, r2, r4, r5, r10, r11, sp}
  900ed4:	726f6600 	rsbvc	r6, pc, #0	; 0x0
  900ed8:	3a74616d 	bcc	2619494 <__bss_end+0x1d05b28>
  900edc:	362c3528 	strcct	r3, [r12], -r8, lsr #10
  900ee0:	65720029 	ldrvsb	r0, [r2, -#41]!
  900ee4:	30283a74 	eorcc	r3, r8, r4, ror r10
  900ee8:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900eec:	685f6f64 	ldmvsda	pc, {r2, r5, r6, r8, r9, r10, r11, sp, lr}^
  900ef0:	5f706c65 	swipl	0x00706c65
  900ef4:	6d6d6f63 	stcvsl	15, cr6, [sp, -#396]!
  900ef8:	3a646e61 	bcc	221c884 <__bss_end+0x1908f18>
  900efc:	2c302866 	ldccs	8, cr2, [r0], -#408
  900f00:	00293931 	eoreq	r3, r9, r1, lsr r9
  900f04:	655f6f64 	ldrvsb	r6, [pc, #fffff09c]	; 8fffa8 <__stack_start+0x8f8fb8>
  900f08:	65736172 	ldrvsb	r6, [r3, -#370]!
  900f0c:	616c665f 	cmnvs	r12, pc, asr r6
  900f10:	663a6873 	undefined
  900f14:	312c3028 	teqcc	r12, r8, lsr #32
  900f18:	74002939 	strvc	r2, [r0], -#2361
  900f1c:	6c5f706f 	ldcvsl	0, cr7, [pc], -#444
  900f20:	6c657665 	stcvsl	6, cr7, [r5], -#404
  900f24:	7261705f 	rsbvc	r7, r1, #95	; 0x5f
  900f28:	663a6573 	undefined
  900f2c:	312c3028 	teqcc	r12, r8, lsr #32
  900f30:	63002939 	tstvs	r0, #933888	; 0xe4000
  900f34:	703a646d 	eorvcs	r6, r10, sp, ror #8
  900f38:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900f3c:	2a3d2936 	bcs	184b41c <__bss_end+0xf37ab0>
  900f40:	312c3028 	teqcc	r12, r8, lsr #32
  900f44:	63002931 	tstvs	r0, #802816	; 0xc4000
  900f48:	635f646d 	cmpvs	pc, #1828716544	; 0x6d000000
  900f4c:	3a79706f 	bcc	275d110 <__bss_end+0x1e497a4>
  900f50:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900f54:	613d2937 	teqvs	sp, r7, lsr r9
  900f58:	2c302872 	ldccs	8, cr2, [r0], -#456
  900f5c:	303b2931 	eorccs	r2, r11, r1, lsr r9
  900f60:	3b39393b 	blcc	174f454 <__bss_end+0xe3bae8>
  900f64:	312c3028 	teqcc	r12, r8, lsr #32
  900f68:	63002931 	tstvs	r0, #802816	; 0xc4000
  900f6c:	5f73646d 	swipl	0x0073646d
  900f70:	7473696c 	ldrvcbt	r6, [r3], -#2412
  900f74:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900f78:	3d293832 	stccc	8, cr3, [r9, -#200]!
  900f7c:	30287261 	eorcc	r7, r8, r1, ror #4
  900f80:	3b29312c 	blcc	134d438 <__bss_end+0xa39acc>
  900f84:	3b393b30 	blcc	174fc4c <__bss_end+0xe3c2e0>
  900f88:	322c3028 	eorcc	r3, r12, #40	; 0x28
  900f8c:	61002936 	tstvs	r0, r6, lsr r9
  900f90:	646d635f 	strvsbt	r6, [sp], -#863
  900f94:	2c30283a 	ldccs	8, cr2, [r0], -#232
  900f98:	00293632 	eoreq	r3, r9, r2, lsr r6
  900f9c:	5f646d63 	swipl	0x00646d63
  900fa0:	30283a69 	eorcc	r3, r8, r9, ror #20
  900fa4:	0029312c 	eoreq	r3, r9, r12, lsr #2
  900fa8:	5f646d63 	swipl	0x00646d63
  900fac:	656e696c 	strvsb	r6, [lr, -#2412]!
  900fb0:	646f6d5f 	strvsbt	r6, [pc], #d5f	; 900fb8 <L_STACK_UNTOUCHED_MAGIC+0xec4>
  900fb4:	28663a65 	stmcsda	r6!, {r0, r2, r5, r6, r9, r11, r12, sp}^
  900fb8:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900fbc:	6d630029 	stcvsl	0, cr0, [r3, -#164]!
  900fc0:	30283a64 	eorcc	r3, r8, r4, ror #20
  900fc4:	2937322c 	ldmcsdb	r7!, {r2, r3, r5, r9, r12, sp}
  900fc8:	72617000 	rsbvc	r7, r1, #0	; 0x0
  900fcc:	5f736d61 	swipl	0x00736d61
  900fd0:	74696465 	strvcbt	r6, [r9], -#1125
  900fd4:	6e656d5f 	mcrvs	13, 3, r6, cr5, cr15, {2}
  900fd8:	28663a75 	stmcsda	r6!, {r0, r2, r4, r5, r6, r9, r11, r12, sp}^
  900fdc:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  900fe0:	6f630029 	swivs	0x00630029
  900fe4:	745f7970 	ldrvcb	r7, [pc], #970	; 900fec <L_STACK_UNTOUCHED_MAGIC+0xef8>
  900fe8:	6c665f6f 	stcvsl	15, cr5, [r6], -#444
  900fec:	5f687361 	swipl	0x00687361
  900ff0:	756e656d 	strvcb	r6, [lr, -#1389]!
  900ff4:	3028663a 	eorcc	r6, r8, r10, lsr r6
  900ff8:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  900ffc:	706f6300 	rsbvc	r6, pc, r0, lsl #6
  901000:	6f745f79 	swivs	0x00745f79
  901004:	5244535f 	subpl	r5, r4, #2080374785	; 0x7c000001
  901008:	6d5f4d41 	ldcvsl	13, cr4, [pc, -#260]
  90100c:	31756e65 	cmncc	r5, r5, ror #28
  901010:	3028663a 	eorcc	r6, r8, r10, lsr r6
  901014:	2939312c 	ldmcsdb	r9!, {r2, r3, r5, r8, r12, sp}
  901018:	63727300 	cmnvs	r2, #0	; 0x0
  90101c:	726f705f 	rsbvc	r7, pc, #95	; 0x5f
  901020:	35283a74 	strcc	r3, [r8, -#2676]!
  901024:	0029342c 	eoreq	r3, r9, r12, lsr #8
  901028:	756e656d 	strvcb	r6, [lr, -#1389]!
  90102c:	646f6d5f 	strvsbt	r6, [pc], #d5f	; 901034 <L_STACK_UNTOUCHED_MAGIC+0xf40>
  901030:	28663a65 	stmcsda	r6!, {r0, r2, r5, r6, r9, r11, r12, sp}^
  901034:	39312c30 	ldmccdb	r1!, {r4, r5, r10, r11, sp}
  901038:	72700029 	rsbvcs	r0, r0, #41	; 0x29
  90103c:	7365636f 	cmnvc	r5, #-1140850687	; 0xbc000001
  901040:	65645f73 	strvsb	r5, [r4, -#3955]!
  901044:	6c756166 	ldfvse	f6, [r5], -#408
  901048:	6f625f74 	swivs	0x00625f74
  90104c:	635f746f 	cmpvs	pc, #1862270976	; 0x6f000000
  901050:	663a646d 	ldrvst	r6, [r10], -sp, ror #8
  901054:	312c3028 	teqcc	r12, r8, lsr #32
  901058:	63002939 	tstvs	r0, #933888	; 0xe4000
  90105c:	616d6d6f 	cmnvs	sp, pc, ror #26
  901060:	703a646e 	eorvcs	r6, r10, lr, ror #8
  901064:	322c3028 	eorcc	r3, r12, #40	; 0x28
  901068:	63002936 	tstvs	r0, #884736	; 0xd8000
  90106c:	30283a68 	eorcc	r3, r8, r8, ror #20
  901070:	2931312c 	ldmcsdb	r1!, {r2, r3, r5, r8, r12, sp}
  901074:	69616d00 	stmvsdb	r1!, {r8, r10, r11, sp, lr}^
  901078:	28463a6e 	stmcsda	r6, {r1, r2, r3, r5, r6, r9, r11, r12, sp}^
  90107c:	29312c30 	ldmcsdb	r1!, {r4, r5, r10, r11, sp}
  901080:	67726100 	ldrvsb	r6, [r2, -r0, lsl #2]!
  901084:	28703a63 	ldmcsda	r0!, {r0, r1, r5, r6, r9, r11, r12, sp}^