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# Intel "Lubbock" Development Board with PXA255 (dbpxa255)
# Obsolete; this was Intel's original PXA255 development system
# Board also had CPU cards for SA1100, PXA210, PXA250, and more.
source [find target/pxa255.cfg]
adapter srst delay 250
jtag_ntrst_delay 250
# NOTE: until after pinmux and such are set up, only CS0 is
# available ... not 2nd bank of CFI, or FPGA, SRAM, ENET, etc.
# CS0, CS1 -- two banks of CFI flash, 32 MBytes each
# each bank is 32-bits wide, two 16-bit chips in parallel
set _FLASHNAME $_CHIPNAME.flash0
flash bank $_FLASHNAME cfi 0x00000000 0x02000000 2 4 $_TARGETNAME
set _FLASHNAME $_CHIPNAME.flash1
flash bank $_FLASHNAME cfi 0x04000000 0x02000000 2 4 $_TARGETNAME
# CS2 low -- FPGA registers
# CS2 high -- 1 MByte SRAM at 0x0a00.0000 ... last 64K for scratch
$_TARGETNAME configure -work-area-phys 0x0a0f0000
$_TARGETNAME configure -event reset-assert-pre \
"$_TARGETNAME configure -work-area-size 0"
# Make the hex led display a number, assuming CS2 is set up
# and all digits have been enabled through the FPGA.
proc hexled {u32} {
mww 0x08000010 $u32
}
# CS3 -- Ethernet
# CS4 -- SA1111
# CS5 -- PCMCIA
# NOTE: system console normally uses the FF UART connector
proc lubbock_init {target} {
echo "Initialize PXA255 Lubbock board"
# (1) pinmux
# GPSR0..GPSR2
mww 0x40e00018 0x00008000
mww 0x40e0001c 0x00FC0382
mww 0x40e00020 0x0001FFFF
# GPDR0..GPDR2
mww 0x40e0000c 0x0060A800
mww 0x40e00010 0x00FF0382
mww 0x40e00014 0x0001C000
# GAFR0_[LU]..GAFR2_[LU]
mww 0x40e00054 0x98400000
mww 0x40e00058 0x00002950
mww 0x40e0005c 0x000A9558
mww 0x40e00060 0x0005AAAA
mww 0x40e00064 0xA0000000
mww 0x40e00068 0x00000002
# write PSSR, enable GPIOs
mww 0x40f00000 0x00000020
# write LED ctrl register ... ones disable
# high byte, 8 hex leds; low byte, 8 discretes
mwh 0x08000040 0xf0ff
hexled 0x0000
# (2) Address space setup
# MSC0/MSC1/MSC2
mww 0x48000008 0x23f223f2
mww 0x4800000c 0x3ff1a441
mww 0x48000010 0x7ff97ff1
# pcmcia/cf
mww 0x48000014 0x00000000
mww 0x48000028 0x00010504
mww 0x4800002c 0x00010504
mww 0x48000030 0x00010504
mww 0x48000034 0x00010504
mww 0x48000038 0x00004715
mww 0x4800003c 0x00004715
hexled 0x1111
# (3) SDRAM setup
# REVISIT this looks dubious ... no refresh cycles
mww 0x48000004 0x03CA4018
mww 0x48000004 0x004B4018
mww 0x48000004 0x000B4018
mww 0x48000004 0x000BC018
mww 0x48000000 0x00001AC8
mww 0x48000000 0x00001AC9
mww 0x48000040 0x00000000
# FIXME -- setup:
# CLOCKS (and faster JTAG)
# enable icache
# FIXME SRAM isn't working
# $target configure -work-area-size 0x10000
hexled 0x2222
flash probe 0
flash probe 1
hexled 0xcafe
}
$_TARGETNAME configure -event reset-init "lubbock_init $_TARGETNAME"
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