tcl/board/kindle2.cfg

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # Board configuration file for Amazon Kindle Model No. D00701 and D00801
   4 # AKA Kindle 2nd generation and Kindle DX
   5 # using a Freescale MCIMX31LDVKN5D i.MX31 processor
   6 #
   7 # Pins at J9 40-Pin FFC-A:
   8 #  1 - GND
   9 # 16 - TRSTB
  10 # 17 - TDI
  11 # 18 - TMS
  12 # 19 - TCK
  13 # 20 - RTCK
  14 # 21 - TDO
  15 # 22 - DE
  16 # 25 - BOOT_MODE4
  17 # 27 - BOOT_MODE2
  18
  19 source [find target/imx31.cfg]
  20 source [find target/imx.cfg]
  21
  22 $_TARGETNAME configure -event reset-init { kindle2_init }
  23 $_TARGETNAME configure -event reset-start { adapter speed 1000 }
  24
  25 # 8MiB NOR Flash
  26 set _FLASHNAME $_CHIPNAME.flash
  27 flash bank $_FLASHNAME cfi 0xa0000000 0x800000 2 2 $_TARGETNAME
  28
  29 # 16kiB internal SRAM
  30 $_TARGETNAME configure -work-area-phys 0x1fffc000 \
  31         -work-area-size 0x4000 -work-area-backup 0
  32
  33 # FIXME: currently SRST is not wired to the system
  34 reset_config trst_only
  35 jtag_ntrst_assert_width 10
  36 jtag_ntrst_delay 30
  37
  38 # this is broken but enabled by default
  39 arm11 memwrite burst disable
  40
  41 adapter speed 1000
  42 ftdi tdo_sample_edge falling
  43
  44 proc kindle2_init {} {
  45         imx3x_reset
  46         kindle2_clock_setup
  47         disable_mmu_and_cache
  48         kindle2_misc_init
  49         kindle2_sdram_init
  50         arm core_state arm
  51 }
  52
  53 proc kindle2_clock_setup {} {
  54         # CCMR: clock from FPM/CKIL
  55         mww 0x53f80000  0x074b0b7b
  56         # IPU_CONF
  57         mww 0x53fc0000  0x040
  58         # 398MHz
  59         mww 0x53f80004 0xff871650
  60         mww 0x53f80010 0x00331c23
  61 }
  62
  63 proc kindle2_misc_init { } {
  64         # AIPS1
  65         mww 0x43f00040 0x0
  66         mww 0x43f00044 0x0
  67         mww 0x43f00048 0x0
  68         mww 0x43f0004c 0x0
  69         mww 0x43f00050 0x0
  70         mww 0x43f00000 0x77777777
  71         mww 0x43f00004 0x77777777
  72
  73         # AIPS2
  74         mww 0x53f00040 0x0
  75         mww 0x53f00044 0x0
  76         mww 0x53f00048 0x0
  77         mww 0x53f0004c 0x0
  78         mww 0x53f00050 0x0
  79         mww 0x53f00000 0x77777777
  80         mww 0x53f00004 0x77777777
  81
  82         # Start 16 bit NorFlash Initialization on CS0
  83         mww 0xb8002000 0x0000cc03
  84         mww 0xb8002004 0xa0330d01
  85         mww 0xb8002008 0x00220800
  86 }
  87
  88 proc disable_mmu_and_cache {} {
  89         # Mode Supervisor, disable FIQ, IRQ and imprecise data aborts
  90         reg cpsr 0x1d3
  91
  92         # flush entire BTAC
  93         arm mcr 15 0 7 5 6 0
  94         # invalidate instruction and data cache
  95         # MCR CP15, 0, R1, C7, C7, 0
  96         arm mcr 15 0 7 7 0
  97
  98         # clean and invalidate cache
  99         arm mcr 15 0 7 15 0
 100
 101         # disable MMU and caches
 102         arm mcr 15 0 1 0 0 0
 103
 104         arm mcr 15 0 15 2 4 0
 105
 106         # invalidate TLBs
 107         arm mcr 15 0 8 7 0 0
 108
 109         # Drain the write buffer
 110         arm mcr 15 0 7 10 4 0
 111
 112         # start from AIPS 2GB region
 113         arm mcr 15 0 15 2 4 0x40000015
 114 }
 115
 116 proc kindle2_sdram_init {} {
 117         #--------------------------------------------
 118         # Samsung K4X1G323PC-8GC3 32Mx32 Mobile DDR SDRAM
 119         #--------------------------------------------
 120         # SDCLK
 121         mww 0x43fac26c 0
 122
 123         # CAS
 124         mww 0x43fac270 0
 125
 126         # RAS
 127         mww 0x43fac274 0
 128
 129         # CS2 (CSD0)
 130         mww 0x43fac27c 0x1000
 131
 132         # DQM3
 133         mww 0x43fac284 0
 134
 135         # DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2dc)
 136         mww 0x43fac288 0
 137         mww 0x43fac28c 0
 138         mww 0x43fac290 0
 139         mww 0x43fac294 0
 140         mww 0x43fac298 0
 141         mww 0x43fac29c 0
 142         mww 0x43fac2a0 0
 143         mww 0x43fac2a4 0
 144         mww 0x43fac2a8 0
 145         mww 0x43fac2ac 0
 146         mww 0x43fac2b0 0
 147         mww 0x43fac2b4 0
 148         mww 0x43fac2b8 0
 149         mww 0x43fac2bc 0
 150         mww 0x43fac2c0 0
 151         mww 0x43fac2c4 0
 152         mww 0x43fac2c8 0
 153         mww 0x43fac2cc 0
 154         mww 0x43fac2d0 0
 155         mww 0x43fac2d4 0
 156         mww 0x43fac2d8 0
 157         mww 0x43fac2dc 0
 158
 159         # ?
 160         mww 0xb8002000 0x00006602
 161         mww 0xb8002004 0x00000501
 162         mww 0xb8002008 0x00000000
 163
 164         # LPDDR1 Initialization script
 165         mww 0xb8001010 0x00000002
 166         mww 0xb8001010 0x00000004
 167         # ESDCFG0: set timing parameters
 168         mww 0xb8001004 0x007fff7f
 169         # ESDCTL0: select Prechare-All mode
 170         mww 0xb8001000 0x92100000
 171         mww 0x80000f00 0x12344321
 172         # ESDCTL0: Auto Refresh
 173         mww 0xb8001000 0xa2100000
 174         mww 0x80000000 0x12344321
 175         mww 0x80000000 0x12344321
 176         # ESDCTL0: Load Mode Register
 177         mww 0xb8001000 0xb2100000
 178         mwb 0x80000033 0xda
 179         mwb 0x81000000 0xff
 180         # ESDCTL0: enable Auto-Refresh
 181         mww 0xb8001000 0x82226080
 182         mww 0x80000000 0xdeadbeef
 183 }