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   1 # Marvell SheevaPlug
   2
   3 source [find interface/sheevaplug.cfg]
   4 source [find target/feroceon.cfg]
   5
   6 $_TARGETNAME configure \
   7         -work-area-phys 0x10000000 \
   8         -work-area-size 65536 \
   9         -work-area-backup 0
  10
  11 arm7_9 dcc_downloads enable
  12
  13 # this assumes the hardware default peripherals location before u-Boot moves it
  14 set _FLASHNAME $_CHIPNAME.flash
  15 nand device $_FLASHNAME orion 0 0xd8000000
  16
  17 proc sheevaplug_init { } {
  18
  19         # We need to assert DBGRQ while holding nSRST down.
  20         # However DBGACK will be set only when nSRST is released.
  21         # Furthermore, the JTAG interface doesn't respond at all when
  22         # the CPU is in the WFI (wait for interrupts) state, so it is
  23         # possible that initial tap examination failed.  So let's
  24         # re-examine the target again here when nSRST is asserted which
  25         # should then succeed.
  26         jtag_reset 0 1
  27         feroceon.cpu arp_examine
  28         halt 0
  29         jtag_reset 0 0
  30         wait_halt
  31
  32         arm mcr 15 0 0 1 0 0x00052078
  33
  34         mww 0xD0001400 0x43000C30 ;#  DDR SDRAM Configuration Register
  35         mww 0xD0001404 0x39543000 ;#  Dunit Control Low Register
  36         mww 0xD0001408 0x22125451 ;#  DDR SDRAM Timing (Low) Register
  37         mww 0xD000140C 0x00000833 ;#  DDR SDRAM Timing (High) Register
  38         mww 0xD0001410 0x000000CC ;#  DDR SDRAM Address Control Register
  39         mww 0xD0001414 0x00000000 ;#  DDR SDRAM Open Pages Control Register
  40         mww 0xD0001418 0x00000000 ;#  DDR SDRAM Operation Register
  41         mww 0xD000141C 0x00000C52 ;#  DDR SDRAM Mode Register
  42         mww 0xD0001420 0x00000042 ;#  DDR SDRAM Extended Mode Register
  43         mww 0xD0001424 0x0000F17F ;#  Dunit Control High Register
  44         mww 0xD0001428 0x00085520 ;#  Dunit Control High Register
  45         mww 0xD000147c 0x00008552 ;#  Dunit Control High Register
  46         mww 0xD0001504 0x0FFFFFF1 ;#  CS0n Size Register
  47         mww 0xD0001508 0x10000000 ;#  CS1n Base Register
  48         mww 0xD000150C 0x0FFFFFF5 ;#  CS1n Size Register
  49         mww 0xD0001514 0x00000000 ;#  CS2n Size Register
  50         mww 0xD000151C 0x00000000 ;#  CS3n Size Register
  51         mww 0xD0001494 0x003C0000 ;#  DDR2 SDRAM ODT Control (Low) Register
  52         mww 0xD0001498 0x00000000 ;#  DDR2 SDRAM ODT Control (High) REgister
  53         mww 0xD000149C 0x0000F80F ;#  DDR2 Dunit ODT Control Register
  54         mww 0xD0001480 0x00000001 ;#  DDR SDRAM Initialization Control Register
  55         mww 0xD0020204 0x00000000 ;#  Main IRQ Interrupt Mask Register
  56         mww 0xD0020204 0x00000000 ;#              "
  57         mww 0xD0020204 0x00000000 ;#              "
  58         mww 0xD0020204 0x00000000 ;#              "
  59         mww 0xD0020204 0x00000000 ;#              "
  60         mww 0xD0020204 0x00000000 ;#              "
  61         mww 0xD0020204 0x00000000 ;#              "
  62         mww 0xD0020204 0x00000000 ;#              "
  63         mww 0xD0020204 0x00000000 ;#              "
  64         mww 0xD0020204 0x00000000 ;#              "
  65         mww 0xD0020204 0x00000000 ;#              "
  66         mww 0xD0020204 0x00000000 ;#              "
  67         mww 0xD0020204 0x00000000 ;#              "
  68         mww 0xD0020204 0x00000000 ;#              "
  69         mww 0xD0020204 0x00000000 ;#              "
  70         mww 0xD0020204 0x00000000 ;#              "
  71         mww 0xD0020204 0x00000000 ;#              "
  72         mww 0xD0020204 0x00000000 ;#              "
  73         mww 0xD0020204 0x00000000 ;#              "
  74         mww 0xD0020204 0x00000000 ;#              "
  75         mww 0xD0020204 0x00000000 ;#              "
  76         mww 0xD0020204 0x00000000 ;#              "
  77         mww 0xD0020204 0x00000000 ;#              "
  78         mww 0xD0020204 0x00000000 ;#              "
  79         mww 0xD0020204 0x00000000 ;#              "
  80         mww 0xD0020204 0x00000000 ;#              "
  81         mww 0xD0020204 0x00000000 ;#              "
  82         mww 0xD0020204 0x00000000 ;#              "
  83         mww 0xD0020204 0x00000000 ;#              "
  84         mww 0xD0020204 0x00000000 ;#              "
  85         mww 0xD0020204 0x00000000 ;#              "
  86         mww 0xD0020204 0x00000000 ;#              "
  87         mww 0xD0020204 0x00000000 ;#              "
  88         mww 0xD0020204 0x00000000 ;#              "
  89         mww 0xD0020204 0x00000000 ;#              "
  90         mww 0xD0020204 0x00000000 ;#              "
  91         mww 0xD0020204 0x00000000 ;#              "
  92
  93         mww 0xD0010000 0x01111111 ;#  MPP  0 to 7
  94         mww 0xD0010004 0x11113322 ;#  MPP  8 to 15
  95         mww 0xD0010008 0x00001111 ;#  MPP 16 to 23
  96
  97         mww 0xD0010418 0x003E07CF ;#  NAND Read Parameters REgister
  98         mww 0xD001041C 0x000F0F0F ;#  NAND Write Parameters Register
  99         mww 0xD0010470 0x01C7D943 ;#  NAND Flash Control Register
 100
 101 }
 102
 103 proc sheevaplug_reflash_uboot { } {
 104
 105         # reflash the u-Boot binary and reboot into it
 106         sheevaplug_init
 107         nand probe 0
 108         nand erase 0 0x0 0xa0000
 109         nand write 0 uboot.bin 0 oob_softecc_kw
 110         resume
 111
 112 }
 113
 114 proc sheevaplug_reflash_uboot_env { } {
 115
 116         # reflash the u-Boot environment variables area
 117         sheevaplug_init
 118         nand probe 0
 119         nand erase 0 0xa0000 0x40000
 120         nand write 0 uboot-env.bin 0xa0000 oob_softecc_kw
 121         resume
 122
 123 }
 124
 125 proc sheevaplug_load_uboot { } {
 126
 127         # load u-Boot into RAM and execute it
 128         sheevaplug_init
 129         load_image uboot.elf
 130         verify_image uboot.elf
 131         resume 0x00600000
 132
 133 }
 134