freemyipod r928 - Code Review

Repository:	freemyipod
Revision:	< r927‎ \| r928 \| r929 >
Date:	02:07, 11 May 2014
Author:	user890104
Status:	new
Tags:
Comment:	iPod Touch 2G: Copy the MMU setup code from iPod Nano 4G
Modified paths:	/emcore/trunk/target/ipodtouch2g/crt0.S (modified) (history)

Diff [purge]

Index: emcore/trunk/target/ipodtouch2g/crt0.S
—	—	@@ -41,8 +41,52 @@
42	42	.section .initcode,"ax",%progbits
43	43	.global _start
44	44	_start:
45		~~- ldr r0, =0x00450878~~
46		~~- mcr p15, 0, r0,c1,c0,0~~
	45	+ mrc p15, 0, r0,c1,c0
	46	+ bic r0, r0, #0x200
	47	+ orr r0, r0, #0x100
	48	+ mcr p15, 0, r0,c1,c0
	49	+ mov r0, #0x7fffffff
	50	+ mcr p15, 0, r0,c3,c0
	51	+ mov r0, #0x22000000
	52	+ orr r1, r0, #0x00000100
	53	+ orr r0, r0, #0x0003c000
	54	+ orr r1, r1, #0x000000fe
	55	+ add r2, r0, #0x200
	56	+ mov r3, #0
	57	+ str r1, [r0], #4
	58	+.mmuloop1:
	59	+ str r3, [r0], #4
	60	+ cmp r0, r2
	61	+ bne .mmuloop1
	62	+ add r0, r0, #0x080
	63	+ add r2, r0, #0x580
	64	+.mmuloop2:
	65	+ str r3, [r0], #4
	66	+ cmp r0, r2
	67	+ bne .mmuloop2
	68	+ add r0, r0, #0x4
	69	+ add r2, r0, #0x7c
	70	+.mmuloop3:
	71	+ str r3, [r0], #4
	72	+ cmp r0, r2
	73	+ bne .mmuloop3
	74	+ add r0, r0, #0x4
	75	+ add r2, r0, #0x500
	76	+ add r2, r2, #0x7c
	77	+.mmuloop4:
	78	+ str r3, [r0], #4
	79	+ cmp r0, r2
	80	+ bne .mmuloop4
	81	+ add r0, r0, #0x200
	82	+ add r2, r0, #0x3000
	83	+.mmuloop5:
	84	+ str r3, [r0], #4
	85	+ cmp r0, r2
	86	+ bne .mmuloop5
	87	+ mrc p15, 0, r0,c1,c0
	88	+ orr r0, r0, #5
	89	+ orr r0, r0, #0x400000
	90	+ mcr p15, 0, r0,c1,c0
47	91	ldr r0, =_sramsource
48	92	ldr r1, =_sramstart
49	93	ldr r2, =_sramend