75 lines
2.1 KiB
INI
75 lines
2.1 KiB
INI
# DM6446 EVM board
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# http://focus.ti.com/docs/toolsw/folders/print/tmdsevm6446.html
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# http://c6000.spectrumdigital.com/davincievm/
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# EVM is just the board; buy that at Spectrum.
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# The "kit" from TI also has: video camera, LCD video monitor, more.
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source [find target/ti_dm6446.cfg]
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# J4 controls what CS2 hooks up to, usually NOR or NAND flash.
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# S3.1/S3.2 controls boot mode, which may force J4 and S3.3 settings.
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# S3.3 controls AEMIF bus width.
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if { [info exists J4_OPTION] } {
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# NOR, NAND, SRAM, ...
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set CS2_MODE $J4_OPTION
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} else {
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set CS2_MODE ""
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}
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# ARM boot:
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# S3.1 = 0, S3.2 = 0 ==> ROM/UBL boot via NAND (J4 == NAND)
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# S3.1 = 1, S3.2 = 0 ==> AEMIF boot (J4 == NOR or SRAM)
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# S3.1 = 0, S3.2 = 1 ==> ROM/UBL boot via HPI
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# S3.1 = 1, S3.2 = 1 ==> ROM/UBL boot via UART (J4 == don't care)
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# AEMIF bus width:
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# S3.3 = 0 ==> 8 bit bus width
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# S3.3 = 1 ==> 16 bit bus width
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# DSP boot:
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# S3.4 = 0 ==> controlled by ARM
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if { $CS2_MODE == "NOR" } {
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# 16 Mbytes address space; 16 bit bus width
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# (older boards used 32MB parts, with upper 16 MB unusable)
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flash bank cfi 0x02000000 0x01000000 2 2 $_TARGETNAME
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proc flashprobe {} { flash probe 0 }
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} elseif { $CS2_MODE == "NAND" } {
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# 64 Mbyte small page; 8 bit bus width
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nand device davinci $_TARGETNAME 0x02000000 hwecc1 0x01e00000
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proc flashprobe {} { nand probe 0 }
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} elseif { $CS2_MODE == "SRAM" } {
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# 4 Mbyte address space; 16 bit bus width
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# loaded via JTAG or HPI
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proc flashprobe {} {}
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} else {
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# maybe it's HPI boot? can't tell...
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echo "WARNING: CS2/flash configuration not recognized"
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proc flashprobe {} {}
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}
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# NOTE: disable or replace this call to dm6446evm_init if you're
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# debugging new UBL code from SRAM (for NAND boot).
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$_TARGETNAME configure -event reset-init { dm6446evm_init }
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#
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# This post-reset init is called when the MMU isn't active, all IRQs
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# are disabled, etc. It should do most of what a UBL does, except for
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# loading code (like U-Boot) into DRAM and running it.
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#
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proc dm6446evm_init {} {
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puts "Initialize DM6446 EVM board"
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# FIXME initialize everything:
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# - PLL1
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# - PLL2
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# - PINMUX
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# - PSC
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# - DDR
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# - AEMIF
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# - UART0
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# - icache
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flashprobe
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}
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