1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
# Board configuration file for Amazon Kindle Model No. D00701 and D00801
# AKA Kindle 2nd generation and Kindle DX
# using a Freescale MCIMX31LDVKN5D i.MX31 processor
#
# Pins at J9 40-Pin FFC-A:
# 1 - GND
# 16 - TRSTB
# 17 - TDI
# 18 - TMS
# 19 - TCK
# 20 - RTCK
# 21 - TDO
# 22 - DE
# 25 - BOOT_MODE4
# 27 - BOOT_MODE2
source [find target/imx31.cfg]
source [find target/imx.cfg]
$_TARGETNAME configure -event reset-init { kindle2_init }
$_TARGETNAME configure -event reset-start { adapter_khz 1000 }
# 8MiB NOR Flash
set _FLASHNAME $_CHIPNAME.flash
flash bank $_FLASHNAME cfi 0xa0000000 0x800000 2 2 $_TARGETNAME
# 16kiB internal SRAM
$_TARGETNAME configure -work-area-phys 0x1fffc000 \
-work-area-size 0x4000 -work-area-backup 0
# FIXME: currently SRST is not wired to the system
reset_config trst_only
jtag_ntrst_assert_width 10
jtag_ntrst_delay 30
# this is broken but enabled by default
arm11 memwrite burst disable
adapter_khz 1000
ftdi_tdo_sample_edge falling
proc kindle2_init {} {
imx3x_reset
kindle2_clock_setup
disable_mmu_and_cache
kindle2_misc_init
kindle2_sdram_init
arm core_state arm
}
proc kindle2_clock_setup {} {
# CCMR: clock from FPM/CKIL
mww 0x53f80000 0x074b0b7b
# IPU_CONF
mww 0x53fc0000 0x040
# 398MHz
mww 0x53f80004 0xff871650
mww 0x53f80010 0x00331c23
}
proc kindle2_misc_init { } {
# AIPS1
mww 0x43f00040 0x0
mww 0x43f00044 0x0
mww 0x43f00048 0x0
mww 0x43f0004c 0x0
mww 0x43f00050 0x0
mww 0x43f00000 0x77777777
mww 0x43f00004 0x77777777
# AIPS2
mww 0x53f00040 0x0
mww 0x53f00044 0x0
mww 0x53f00048 0x0
mww 0x53f0004c 0x0
mww 0x53f00050 0x0
mww 0x53f00000 0x77777777
mww 0x53f00004 0x77777777
# Start 16 bit NorFlash Initialization on CS0
mww 0xb8002000 0x0000cc03
mww 0xb8002004 0xa0330d01
mww 0xb8002008 0x00220800
}
proc disable_mmu_and_cache {} {
# Mode Supervisor, disable FIQ, IRQ and imprecise data aborts
reg cpsr 0x1d3
# flush entire BTAC
arm mcr 15 0 7 5 6 0
# invalidate instruction and data cache
# MCR CP15, 0, R1, C7, C7, 0
arm mcr 15 0 7 7 0
# clean and invalidate cache
arm mcr 15 0 7 15 0
# disable MMU and caches
arm mcr 15 0 1 0 0 0
arm mcr 15 0 15 2 4 0
# invalidate TLBs
arm mcr 15 0 8 7 0 0
# Drain the write buffer
arm mcr 15 0 7 10 4 0
# start from AIPS 2GB region
arm mcr 15 0 15 2 4 0x40000015
}
proc kindle2_sdram_init {} {
#--------------------------------------------
# Samsung K4X1G323PC-8GC3 32Mx32 Mobile DDR SDRAM
#--------------------------------------------
# SDCLK
mww 0x43fac26c 0
# CAS
mww 0x43fac270 0
# RAS
mww 0x43fac274 0
# CS2 (CSD0)
mww 0x43fac27c 0x1000
# DQM3
mww 0x43fac284 0
# DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2dc)
mww 0x43fac288 0
mww 0x43fac28c 0
mww 0x43fac290 0
mww 0x43fac294 0
mww 0x43fac298 0
mww 0x43fac29c 0
mww 0x43fac2a0 0
mww 0x43fac2a4 0
mww 0x43fac2a8 0
mww 0x43fac2ac 0
mww 0x43fac2b0 0
mww 0x43fac2b4 0
mww 0x43fac2b8 0
mww 0x43fac2bc 0
mww 0x43fac2c0 0
mww 0x43fac2c4 0
mww 0x43fac2c8 0
mww 0x43fac2cc 0
mww 0x43fac2d0 0
mww 0x43fac2d4 0
mww 0x43fac2d8 0
mww 0x43fac2dc 0
# ?
mww 0xb8002000 0x00006602
mww 0xb8002004 0x00000501
mww 0xb8002008 0x00000000
# LPDDR1 Initialization script
mww 0xb8001010 0x00000002
mww 0xb8001010 0x00000004
# ESDCFG0: set timing paramters
mww 0xb8001004 0x007fff7f
# ESDCTL0: select Prechare-All mode
mww 0xb8001000 0x92100000
mww 0x80000f00 0x12344321
# ESDCTL0: Auto Refresh
mww 0xb8001000 0xa2100000
mww 0x80000000 0x12344321
mww 0x80000000 0x12344321
# ESDCTL0: Load Mode Register
mww 0xb8001000 0xb2100000
mwb 0x80000033 0xda
mwb 0x81000000 0xff
# ESDCTL0: enable Auto-Refresh
mww 0xb8001000 0x82226080
mww 0x80000000 0xdeadbeef
}
|
