WebSVN – freemyipod – Blame – /apps/installer-classic/bootstub/bootstub.S

Rev	Author	Line No.	Line
366	theseven	1	`@`
		2	`@`
		3	`@ emBIOS Loader for iPod Classic`
		4	`@`
		5	`@ Copyright 2010 TheSeven`
		6	`@`
		7	`@`
		8	`@ This file is part of emBIOS.`
		9	`@`
		10	`@ emBIOS is free software: you can redistribute it and/or`
		11	`@ modify it under the terms of the GNU General Public License as`
		12	`@ published by the Free Software Foundation, either version 2 of the`
		13	`@ License, or (at your option) any later version.`
		14	`@`
		15	`@ emBIOS is distributed in the hope that it will be useful,`
		16	`@ but WITHOUT ANY WARRANTY; without even the implied warranty of`
		17	`@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.`
		18	`@ See the GNU General Public License for more details.`
		19	`@`
		20	`@ You should have received a copy of the GNU General Public License along`
		21	`@ with emBIOS. If not, see <http://www.gnu.org/licenses/>.`
		22	`@`
		23	`@`
		24
		25	`.global _start`
		26	`_start:`
		27
		28	`msr cpsr_c, #0xd3`
		29	`mrc p15, 0, r0,c1,c0`
		30	`bic r0, r0, #1`
		31	`mcr p15, 0, r0,c1,c0`
		32	`mov r0, #0`
		33	`mcr p15, 0, r0,c7,c5`
		34	`mcr p15, 0, r0,c8,c7`
		35	`mcr p15, 0, r0,c13,c0`
		36	`adr lr, cacheflush_done`
		37
		38	`flushcache:`
		39	`mrc p15, 0, r15,c7,c14,3`
		40	`bne flushcache`
		41	`mov r0, #0`
		42	`mcr p15, 0, r0,c7,c10,4`
		43	`bx lr`
		44
		45	`cacheflush_done:`
		46	`adr sp, values1`
		47	`ldmia sp!, {r10-r12}`
		48	`mcr p15, 0, r11,c2,c0`
		49	`mov r0, #-1`
		50	`mcr p15, 0, r0,c3,c0`
		51	`mmuloop:`
		52	`str r12, [r11], #4`
		53	`add r12, r12, #0x00100000`
		54	`cmp r12, #0x38000000`
		55	`biccs r12, r12, #0xc`
		56	`tst r12, #0x40000000`
		57	`beq mmuloop`
		58	`mcr p15, 0, r10,c1,c0`
		59	`ldmia sp!, {r0-r12} @ R0 = SYSCONBASE (temporary)`
		60	`str r1, [r0,#0x48]`
		61	`str r2, [r0,#0x4c]`
		62	`mov r2, #0 @ R2 = 0`
		63	`str r2, [r0]`
		64	`str r2, [r0,#0x4]`
		65	`mov r1, #7`
		66	`str r1, [r0,#0x44]`
		67	`mov r1, #0x30`
		68	`str r1, [r0,#0x44]`
		69	`str r2, [r0,#0x60]`
		70	`str r3, [r0,#0x28]`
		71	`str r4, [r0,#0x38]`
		72	`mov r1, #0x34`
		73	`str r1, [r0,#0x44]`
		74	`orr r1, r1, #0x40000`
		75	`str r1, [r0,#0x44]`
		76	`waitpll:`
		77	`ldr r1, [r0,#0x40]`
		78	`tst r1, #4`
		79	`beq waitpll`
		80	`str r5, [r0,#0x04]`
		81	`mov r1, #0x3000`
		82	`str r1, [r0]`
		83	`mov r1, #0x8000`
		84	`orr r3, r1, #0x80000000`
		85	`str r3, [r0,#0x8]`
		86	`str r3, [r0,#0xc]`
		87	`str r1, [r0,#0x10]`
		88	`str r1, [r0,#0x14]`
		89	`mov r3, #3`
		90	`str r3, [r6]`
		91	`orr r1, r0, #0x00200000 @ R1 = TIMERBASE`
		92	`mov r4, #0x440`
		93	`str r4, [r1,#0xa0]`
		94	`mov r4, #0xb`
		95	`str r4, [r1,#0xb0]`
		96	`mvn r4, r2`
		97	`str r4, [r1,#0xa8]`
		98	`str r3, [r1,#0xa4]`
		99	`orr r3, r1, #0x00800000 @ R3 = GPIOBASE (temporary)`
		100	`gpioloop:`
		101	`ldr r4, [sp], #4`
		102	`str r4, [r3], #0xc`
		103	`str r2, [r3], #0x4`
		104	`str r2, [r3], #0x10`
		105	`tst r3, #0x200`
		106	`beq gpioloop`
		107	`str r7, [r3]`
		108	`add r7, r7, #0x100`
		109	`str r7, [r3]`
		110	`ldr r7, [r3,#-0x30]`
		111	`bic r7, r7, #0x40`
		112	`str r7, [r3,#-0x30]`
		113	`ldr r7, [r3,#-0x34]`
		114	`orr r7, r7, #0x40`
		115	`str r7, [r3,#-0x34]`
		116	`add r5, r0, #0x00100000 @ R5 = I2CBASE`
		117	`bl i2cwaitrdy @ R3 = I2C address (temporary)`
		118	`mov r7, #0x40 @ R4 = I2C data (temporary)`
		119	`str r7, [r5,#8] @ R6 = I2C scratch register (temporary)`
		120	`bl i2cwaitrdy @ R7 = I2C return address (temporary)`
		121	`str r2, [r5,#0x14] @ R0 = coldboot flag (temporary)`
		122	`bl i2cwaitrdy`
		123	`str r2, [r5,#0x18]`
		124	`bl i2cwaitrdy`
		125	`mov r6, #0x80`
		126	`str r6, [r5,#0x4]`
		127	`bl i2cwaitrdy`
		128	`str r2, [r5]`
		129	`bl i2cwaitrdy`
		130	`str r2, [r5,#0x4]`
		131	`bl i2cwaitrdy`
		132	`str r7, [r5,#0xc]`
		133	`bl i2cwaitrdy`
		134	`mov r6, #0x184`
		135	`str r6, [r5]`
		136	`bl i2cwaitrdy`
		137	`mov r6, #0x10`
		138	`str r6, [r5,#0x4]`
		139	`bl i2cwaitrdy`
		140	`mov r3, #0x16`
		141	`mvn r4, r2`
		142	`bl pmutransfer`
		143	`and r0, r4, #7`
		144	`mov r3, #0xc`
		145	`mvn r4, r2`
		146	`bl pmutransfer`
		147	`and r4, r4, #8`
		148	`orr r0, r0, r4`
		149	`pmuloop:`
		150	`ldrb r3, [sp], #1`
		151	`ldrb r4, [sp], #1`
		152	`cmp r3, #0xff`
		153	`adrne lr, pmuloop`
		154	`bne pmutransfer`
		155	`mov r3, #0x19`
		156	`mvn r4, r2`
		157	`bl pmutransfer`
		158	`tst r4, #1`
		159	`beq pwrok`
		160	`mov r3, #0x4b`
		161	`mvn r4, r2`
		162	`bl pmutransfer`
		163	`tst r4, #4`
		164	`bne pwrok`
		165	`mov r3, #0x12`
		166	`mvn r4, r2`
		167	`bl pmutransfer`
		168	`tst r4, #4`
		169	`bne pwrok`
		170	`poweroff:`
		171	`mov r3, #0xc`
		172	`mov r4, #1`
		173	`bl pmutransfer`
		174	`b poweroff`
		175
		176	`values1:`
		177	`.word 0x0005107D @ R10 - CP15r1`
		178	`.word 0x2203C000 @ R11 - First level page table`
		179	`.word 0x00000C1E @ R12 - Default segment flags`
		180	`.word 0x3C500000 @ R0 - SYSCON base`
		181	`.word 0x2007CE65 @ R1 - PWRCON(0)`
		182	`.word 0x0003EFC9 @ R2 - PWRCON(1)`
		183	`.word 0x01002401 @ R3`
		184	`.word 0x00007E90 @ R4`
		185	`.word 0x00404101 @ R5`
		186	`.word 0x38501000 @ R6`
		187	`.word 0x00060400 @ R7`
		188	`.word 0x0000080D @ R8`
		189	`.word 0x0006105D @ R9`
		190	`.word 0x001FB621 @ R10`
		191	`.word 0x0790682B @ R11`
		192	`.word 0x00008040 @ R12`
		193
		194	`.word 0x5322222F @ PCON0`
		195	`.word 0xEEEEEE00 @ PCON1`
		196	`.word 0x2332EEEE @ PCON2`
		197	`.word 0x3333E222 @ PCON3`
		198	`.word 0x33333333 @ PCON4`
		199	`.word 0x33333333 @ PCON5`
		200	`.word 0x3F000E33 @ PCON6`
		201	`.word 0xEEEEEEEE @ PCON7`
		202	`.word 0xEEEEEEEE @ PCON8`
		203	`.word 0xEEEEEEEE @ PCON9`
		204	`.word 0xE0EEEEEE @ PCONA`
		205	`.word 0xEF00EE0E @ PCONB`
		206	`.word 0xEEEE0EEF @ PCONC`
		207	`.word 0xEEEEEEEE @ PCOND`
		208	`.word 0x202222EE @ PCONE`
		209	`.word 0xEEEE0E22 @ PCONF`
		210
		211	`.byte 0x0c, 0 @ PMU init address-data pairs`
		212	`.byte 0x2d, 0x15`
		213	`.byte 0x2e, 1`
		214	`.byte 0x37, 0x15`
		215	`.byte 0x38, 4`
		216	`.byte 0x2f, 0x15`
		217	`.byte 0x30, 1`
		218	`.byte 0x3b, 0`
		219	`.byte 0x3c, 0x8c`
		220	`.byte 0x13, 3`
		221	`.byte 0x14, 0`
		222	`.byte 0x15, 0`
		223	`.byte 0x22, 0x2f`
		224	`.byte 0x23, 1`
		225	`.byte 0x24, 0`
		226	`.byte 0x25, 0x10`
		227	`.byte 0x26, 9`
		228	`.byte 0x27, 1`
		229	`.byte 0x1a, 0x6f`
		230	`.byte 0x1b, 0`
		231	`.byte 0x1c, 0`
		232	`.byte 0x1d, 0x59`
		233	`.byte 0x33, 9`
		234	`.byte 0x34, 1`
		235	`.byte 0x39, 0x18`
		236	`.byte 0x3a, 0`
		237	`.byte 0x18, 0xa`
		238	`.byte 0x19, 4`
		239	`.byte 0x58, 0`
		240	`.byte 0x07, 0xb0`
		241	`.byte 0x08, 3`
		242	`.byte 0x09, 0xfe`
		243	`.byte 0x0a, 0xfc`
		244	`.byte 0x0b, 0xff`
		245	`.byte 0x86, 0xfd`
		246	`.byte 0x0d, 0xdf`
		247	`.byte 0x0e, 0xaa`
		248	`.byte 0x0f, 0x4a`
		249	`.byte 0x10, 5`
		250	`.byte 0x11, 0x27`
		251	`.byte 0x17, 1`
		252	`.byte 0x2a, 5`
		253	`.byte 0xff, 0xff @ PMU init terminator`
		254
		255	`lcddata_ref:`
		256	`.hword lcddata_0 - lcddata_ref`
		257	`.hword lcddata_1 - lcddata_ref - 2`
		258	`.hword lcddata_2 - lcddata_ref - 4`
		259	`.hword lcddata_3 - lcddata_ref - 6`
		260	`lcddata_0:`
		261	`.hword 0x4011`
		262	`.hword 0xc78f`
		263	`.hword 0x8135`
		264	`.byte 0x00`
		265	`.hword 0x813a`
		266	`.byte 0x06`
		267	`.hword 0x8136`
		268	`.byte 0x00`
		269	`.hword 0x4013`
		270	`.hword 0x4029`
		271	`.hword 0xc000`
		272	`lcddata_1:`
		273	`.hword 0x95b0`
		274	`.byte 0x3a`
		275	`.byte 0x3a`
		276	`.byte 0x80`
		277	`.byte 0x80`
		278	`.byte 0x0a`
		279	`.byte 0x0a`
		280	`.byte 0x0a`
		281	`.byte 0x0a`
		282	`.byte 0x0a`
		283	`.byte 0x0a`
		284	`.byte 0x0a`
		285	`.byte 0x0a`
		286	`.byte 0x3c`
		287	`.byte 0x30`
		288	`.byte 0x0f`
		289	`.byte 0x00`
		290	`.byte 0x01`
		291	`.byte 0x54`
		292	`.byte 0x06`
		293	`.byte 0x66`
		294	`.byte 0x66`
		295	`.hword 0x81b8`
		296	`.byte 0xd8`
		297	`.hword 0x9eb1`
		298	`.byte 0x14`
		299	`.byte 0x59`
		300	`.byte 0x00`
		301	`.byte 0x15`
		302	`.byte 0x57`
		303	`.byte 0x27`
		304	`.byte 0x04`
		305	`.byte 0x85`
		306	`.byte 0x14`
		307	`.byte 0x59`
		308	`.byte 0x00`
		309	`.byte 0x15`
		310	`.byte 0x57`
		311	`.byte 0x27`
		312	`.byte 0x04`
		313	`.byte 0x85`
		314	`.byte 0x14`
		315	`.byte 0x09`
		316	`.byte 0x15`
		317	`.byte 0x57`
		318	`.byte 0x27`
		319	`.byte 0x04`
		320	`.byte 0x05`
		321	`.byte 0x14`
		322	`.byte 0x09`
		323	`.byte 0x15`
		324	`.byte 0x57`
		325	`.byte 0x27`
		326	`.byte 0x04`
		327	`.byte 0x05`
		328	`.hword 0x40d2`
		329	`.hword 0x0101`
		330	`.hword 0x8de0`
		331	`.byte 0x00`
		332	`.byte 0x00`
		333	`.byte 0x00`
		334	`.byte 0x05`
		335	`.byte 0x0b`
		336	`.byte 0x12`
		337	`.byte 0x16`
		338	`.byte 0x1f`
		339	`.byte 0x25`
		340	`.byte 0x22`
		341	`.byte 0x24`
		342	`.byte 0x29`
		343	`.byte 0x1c`
		344	`.hword 0x8de1`
		345	`.byte 0x08`
		346	`.byte 0x01`
		347	`.byte 0x01`
		348	`.byte 0x06`
		349	`.byte 0x0b`
		350	`.byte 0x11`
		351	`.byte 0x15`
		352	`.byte 0x1f`
		353	`.byte 0x27`
		354	`.byte 0x26`
		355	`.byte 0x29`
		356	`.byte 0x2f`
		357	`.byte 0x1e`
		358	`.hword 0x8de2`
		359	`.byte 0x07`
		360	`.byte 0x01`
		361	`.byte 0x01`
		362	`.byte 0x05`
		363	`.byte 0x09`
		364	`.byte 0x0f`
		365	`.byte 0x13`
		366	`.byte 0x1e`
		367	`.byte 0x26`
		368	`.byte 0x25`
		369	`.byte 0x28`
		370	`.byte 0x2e`
		371	`.byte 0x1e`
		372	`.hword 0x8de3`
		373	`.byte 0x0d`
		374	`.byte 0x00`
		375	`.byte 0x00`
		376	`.byte 0x00`
		377	`.byte 0x05`
		378	`.byte 0x0b`
		379	`.byte 0x12`
		380	`.byte 0x16`
		381	`.byte 0x1f`
		382	`.byte 0x25`
		383	`.byte 0x22`
		384	`.byte 0x24`
		385	`.byte 0x29`
		386	`.byte 0x1c`
		387	`.hword 0x8de4`
		388	`.byte 0x08`
		389	`.byte 0x01`
		390	`.byte 0x01`
		391	`.byte 0x06`
		392	`.byte 0x0b`
		393	`.byte 0x11`
		394	`.byte 0x15`
		395	`.byte 0x1f`
		396	`.byte 0x27`
		397	`.byte 0x26`
		398	`.byte 0x29`
		399	`.byte 0x2f`
		400	`.byte 0x1e`
		401	`.hword 0x8de5`
		402	`.byte 0x07`
		403	`.byte 0x01`
		404	`.byte 0x01`
		405	`.byte 0x05`
		406	`.byte 0x09`
		407	`.byte 0x0f`
		408	`.byte 0x13`
		409	`.byte 0x1e`
		410	`.byte 0x26`
		411	`.byte 0x25`
		412	`.byte 0x28`
		413	`.byte 0x2e`
		414	`.byte 0x1e`
		415	`.hword 0x813a`
		416	`.byte 0x06`
		417	`.hword 0x81c2`
		418	`.byte 0x00`
		419	`.hword 0x8135`
		420	`.byte 0x00`
		421	`.hword 0x4011`
		422	`.hword 0xce88`
		423	`.hword 0x4013`
		424	`.hword 0x4029`
		425	`lcddata_2:`
		426	`.hword 0xc000`
		427	`lcddata_3:`
		428	`.hword 0x4008`
		429	`.hword 0x0808`
		430	`.hword 0x8110`
		431	`.byte 0x13`
		432	`.hword 0x4011`
		433	`.hword 0x0300`
		434	`.hword 0x4012`
		435	`.hword 0x0101`
		436	`.hword 0x4013`
		437	`.hword 0x0a03`
		438	`.hword 0x4014`
		439	`.hword 0x0a0e`
		440	`.hword 0x4015`
		441	`.hword 0x0a19`
		442	`.hword 0x4016`
		443	`.hword 0x2402`
		444	`.hword 0x8118`
		445	`.byte 0x01`
		446	`.hword 0x8190`
		447	`.byte 0x21`
		448	`.hword 0x4300`
		449	`.hword 0x0506`
		450	`.hword 0x4301`
		451	`.hword 0x0402`
		452	`.hword 0x4302`
		453	`.hword 0x0706`
		454	`.hword 0x4303`
		455	`.hword 0x0303`
		456	`.hword 0x4304`
		457	`.hword 0x0100`
		458	`.hword 0x4305`
		459	`.hword 0x0207`
		460	`.hword 0x4306`
		461	`.hword 0x170e`
		462	`.hword 0x4307`
		463	`.hword 0x0506`
		464	`.hword 0x4308`
		465	`.hword 0x0402`
		466	`.hword 0x4309`
		467	`.hword 0x0706`
		468	`.hword 0x430a`
		469	`.hword 0x0303`
		470	`.hword 0x430b`
		471	`.hword 0x0100`
		472	`.hword 0x430c`
		473	`.hword 0x0207`
		474	`.hword 0x430d`
		475	`.hword 0x170e`
		476	`.hword 0x4310`
		477	`.hword 0x0606`
		478	`.hword 0x4311`
		479	`.hword 0x0506`
		480	`.hword 0x4312`
		481	`.hword 0x0707`
		482	`.hword 0x4313`
		483	`.hword 0x0303`
		484	`.hword 0x4314`
		485	`.hword 0x0200`
		486	`.hword 0x4315`
		487	`.hword 0x0307`
		488	`.hword 0x4316`
		489	`.hword 0x170e`
		490	`.hword 0x4317`
		491	`.hword 0x0606`
		492	`.hword 0x4318`
		493	`.hword 0x0506`
		494	`.hword 0x4319`
		495	`.hword 0x0707`
		496	`.hword 0x431a`
		497	`.hword 0x0303`
		498	`.hword 0x431b`
		499	`.hword 0x0200`
		500	`.hword 0x431c`
		501	`.hword 0x0307`
		502	`.hword 0x431d`
		503	`.hword 0x170e`
		504	`.hword 0x4320`
		505	`.hword 0x0707`
		506	`.hword 0x4321`
		507	`.hword 0x0005`
		508	`.hword 0x4322`
		509	`.hword 0x0705`
		510	`.hword 0x4323`
		511	`.hword 0x0303`
		512	`.hword 0x4324`
		513	`.hword 0x0300`
		514	`.hword 0x4325`
		515	`.hword 0x0707`
		516	`.hword 0x4326`
		517	`.hword 0x1f16`
		518	`.hword 0x4327`
		519	`.hword 0x0707`
		520	`.hword 0x4328`
		521	`.hword 0x0005`
		522	`.hword 0x4329`
		523	`.hword 0x0705`
		524	`.hword 0x432a`
		525	`.hword 0x0303`
		526	`.hword 0x432b`
		527	`.hword 0x0300`
		528	`.hword 0x432c`
		529	`.hword 0x0707`
		530	`.hword 0x432d`
		531	`.hword 0x1f16`
		532	`.hword 0x4400`
		533	`.hword 0x001d`
		534	`.hword 0x4401`
		535	`.hword 0x0001`
		536	`.hword 0x4205`
		537	`.hword 0x0060`
		538	`.hword 0x8107`
		539	`.byte 0x01`
		540	`.hword 0x8131`
		541	`.byte 0x71`
		542	`.hword 0x4110`
		543	`.hword 0x0001`
		544	`.hword 0x4100`
		545	`.hword 0x17b0`
		546	`.hword 0x4101`
		547	`.hword 0x0220`
		548	`.hword 0x4102`
		549	`.hword 0x009b`
		550	`.hword 0x4103`
		551	`.hword 0x1200`
		552	`.hword 0x4105`
		553	`.hword 0x0103`
		554	`.hword 0x4106`
		555	`.hword 0x0105`
		556	`.hword 0x8107`
		557	`.byte 0x21`
		558	`.hword 0x4102`
		559	`.hword 0x00bd`
		560	`.hword 0x4001`
		561	`.hword 0x0110`
		562	`.hword 0x4003`
		563	`.hword 0x0230`
		564	`.hword 0x4002`
		565	`.hword 0x0500`
		566	`.hword 0x8107`
		567	`.byte 0x31`
		568	`.hword 0x4130`
		569	`.byte 0x07`
		570	`.hword 0xc744`
		571	`.hword 0x4030`
		572	`.hword 0x03ff`
		573	`.hword 0xce88`
		574	`.hword 0x8107`
		575	`.byte 0x72`
		576	`.hword 0xe454`
		577	`.hword 0x4007`
		578	`.hword 0x0173`
		579	`.hword 0xc000`
		580
		581	`lcdbyteseq:`
		582	`mov r9, r0,lsr#8`
		583	`and r0, r0, #0xff`
		584	`bl sendlcdc`
		585	`lcdbyteseqloop:`
		586	`ldrb r0, [sp], #1`
		587	`bl sendlcdd`
		588	`subs r9, r9, #1`
		589	`bne lcdbyteseqloop`
		590	`b lcdloop`
		591
		592	`sendlcdc:`
		593	`ldr r6, [r4,#0x1c]`
		594	`ands r6, r6, #0x10`
		595	`bne sendlcdc`
		596	`str r0, [r4,#0x04]`
		597	`mov pc, lr`
		598
		599	`sendlcdd:`
		600	`ldr r6, [r4,#0x1c]`
		601	`ands r6, r6, #0x10`
		602	`bne sendlcdd`
		603	`str r0, [r4,#0x40]`
		604	`mov pc, lr`
		605
		606	`i2cwaitrdy:`
		607	`ldr r6, [r5,#0x10]`
		608	`cmp r6, #0`
		609	`bne i2cwaitrdy`
		610	`mov pc, lr`
		611
		612	`i2cwait:`
		613	`ldr r6, [r5]`
		614	`tst r6, #0x10`
		615	`beq i2cwait`
		616	`mov pc, lr`
		617
		618	`pmutransfer:`
		619	`mov r7, lr`
		620	`mov lr, #0xb7`
		621	`str lr, [r5]`
		622	`mov lr, #0xe6`
		623	`str lr, [r5,#0xc]`
		624	`mov lr, #0xf0`
		625	`str lr, [r5,#0x4]`
		626	`bl i2cwait`
		627	`str r3, [r5,#0xc]`
		628	`mov lr, #0xb7`
		629	`str lr, [r5]`
		630	`bl i2cwait`
		631	`cmn r4, #1`
		632	`beq pmuskip`
		633	`str r4, [r5,#0xc]`
		634	`mov lr, #0xb7`
		635	`str lr, [r5]`
		636	`bl i2cwait`
		637	`mov lr, #0xd0`
		638	`b pmudone`
		639	`pmuskip:`
		640	`mov lr, #0xe7`
		641	`str lr, [r5,#0xc]`
		642	`mov lr, #0xb0`
		643	`str lr, [r5,#0x4]`
		644	`mov lr, #0xb7`
		645	`str lr, [r5]`
		646	`bl i2cwait`
		647	`mov lr, #0x37`
		648	`str lr, [r5]`
		649	`bl i2cwait`
		650	`ldr r3, [r5,#0xc]`
		651	`mov lr, #0x90`
		652	`pmudone:`
		653	`str lr, [r5,#0x4]`
		654	`mov lr, #0xb7`
		655	`str lr, [r5]`
		656	`pmuwait:`
		657	`ldr lr, [r5,#0x4]`
		658	`tst lr, #0x20`
		659	`bne pmuwait`
		660	`mov pc, r7`
		661
		662	`udelay:`
		663	`ldr r6, [r1,#0xb4]`
		664	`add r0, r0, r6`
		665	`udelayloop:`
		666	`ldr r6, [r1,#0xb4]`
		667	`cmp r6, r0`
		668	`bmi udelayloop`
		669	`mov pc, lr`
		670
		671
		672	`pwrok:`
		673	`sub r7, r5, #0x04500000 @ R7 = MIUBASE (temporary)`
		674	`cmp r0, #0`
		675	`moveq r6, #0x11`
		676	`streq r6, [r7]`
		677	`str r8, [r7]`
		678	`str r2, [r7,#0xf0]`
		679	`str r9, [r7,#0x8]`
		680	`str r10, [r7,#0x10]`
		681	`mov r8, #0x1800`
		682	`orr r6, r8, #0x45`
		683	`str r6, [r7,#0x200]`
		684	`str r6, [r7,#0x204]`
		685	`str r8, [r7,#0x210]`
		686	`str r8, [r7,#0x214]`
		687	`str r6, [r7,#0x220]`
		688	`str r6, [r7,#0x224]`
		689	`add r6, r6, #0x40`
		690	`str r6, [r7,#0x230]`
		691	`str r6, [r7,#0x234]`
		692	`mov r6, #0x19`
		693	`str r6, [r7,#0x14]`
		694	`str r6, [r7,#0x18]`
		695	`str r11, [r7,#0x1c]`
		696	`ldr r6, [r7,#0x314]`
		697	`bic r6, r6, #0x10`
		698	`str r6, [r7,#0x314]`
		699	`add r8, r7, #0x2c`
		700	`mov r9, #0x24`
		701	`sdramloop:`
		702	`ldr r6, [r8]`
		703	`bic r6, r6, #0x01000000`
		704	`str r6, [r8], #4`
		705	`subs r9, r9, #1`
		706	`bne sdramloop`
		707	`mov r6, #0x540`
		708	`str r6, [r7,#0x1cc]`
		709	`ldr r6, [r7,#0x1d4]`
		710	`orr r6, r6, #0x80`
		711	`str r6, [r7,#0x1d4]`
		712	`mov r6, #0x33`
		713	`str r6, [r7,#0x4]`
		714	`str r6, [r7,#0x4]`
		715	`orr r8, r6, #0x200`
		716	`str r8, [r7,#0x4]`
		717	`str r6, [r7,#0x4]`
		718	`str r6, [r7,#0x4]`
		719	`str r6, [r7,#0x4]`
		720	`orr r8, r8, #0x100`
		721	`str r8, [r7,#0x4]`
		722	`str r6, [r7,#0x4]`
		723	`str r6, [r7,#0x4]`
		724	`str r6, [r7,#0x4]`
		725	`str r8, [r7,#0x4]`
		726	`str r6, [r7,#0x4]`
		727	`str r6, [r7,#0x4]`
		728	`str r6, [r7,#0x4]`
		729	`cmp r0, #0`
		730	`strne r6, [r7,#0xc]`
		731	`bicne r8, r8, #0x200`
		732	`strne r8, [r7,#0x4]`
		733	`strne r6, [r7,#0x4]`
		734	`strne r6, [r7,#0x4]`
		735	`strne r6, [r7,#0x4]`
		736	`strne r12, [r7,#0xc]`
		737	`strne r8, [r7,#0x4]`
		738	`strne r6, [r7,#0x4]`
		739	`strne r6, [r7,#0x4]`
		740	`strne r6, [r7,#0x4]`
		741	`ldr r6, [r7,#0x8]`
		742	`orr r6, r6, #0x61000`
		743	`str r6, [r7,#0x8]`
		744	`orr r3, r1, #0x00800000 @ R3 = GPIOBASE`
		745	`sub r4, r1, #0x04400000 @ R4 = LCDBASE`
		746	`ldr r0, [r3,#0xc4]`
		747	`and r8, r0, #0x30 @ R8 = LCD type GPIO bits << 4`
		748	`add sp, sp, r8,lsr#3`
		749	`ldrh r0, [sp]`
		750	`add sp, sp, r0`
		751	`ldr r0, val_80100db0`
		752	`str r0, [r4]`
		753	`mov r0, #0x33`
		754	`str r0, [r4,#0x20]`
		755	`lcdloop:`
		756	`adr lr, lcdloop`
		757	`ldrb r6, [sp], #1`
		758	`ldrb r7, [sp], #1`
		759	`orr r6, r6, r7,lsl#8`
		760	`mov r7, r6,lsr#14`
		761	`bics r0, r6, #0xc000`
		762	`add pc, pc, r7,lsl#2`
		763	`val_80100db0:`
		764	`.word 0x80100db0`
		765	`b sendlcdd`
		766	`b sendlcdc`
		767	`bne lcdbyteseq`
		768	`movne r0, r0,lsl#4`
		769	`bne udelay`
		770	`adr r1, _stubend + 4`
		771	`ldr r0, _stubend`
		772	`add r0, r1, r0`
		773	`mov r2, #0x08000000`
		774	`movepayloadloop:`
		775	`cmp r0, r1`
		776	`ldrhi r3, [r1], #4`
		777	`strhi r3, [r2], #4`
		778	`bhi movepayloadloop`
		779	`bl flushcache`
		780	`mcr p15, 0, r0,c7,c5`
		781	`mov pc, #0x08000000`
		782
		783	`_stubend:`

Subversion Repositories freemyipod

(root)/apps/installer-classic/bootstub/bootstub.S @ 366 – Rev