diff options
| -rw-r--r-- | tcl/board/dm6446evm.cfg | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/tcl/board/dm6446evm.cfg b/tcl/board/dm6446evm.cfg new file mode 100644 index 0000000..39607fe --- /dev/null +++ b/tcl/board/dm6446evm.cfg @@ -0,0 +1,74 @@ +# DM6446 EVM board +# http://focus.ti.com/docs/toolsw/folders/print/tmdsevm6446.html +# http://c6000.spectrumdigital.com/davincievm/ +# EVM is just the board; buy that at Spectrum. +# The "kit" from TI also has: video camera, LCD video monitor, more. + +source [find target/ti_dm6446.cfg] + +# J4 controls what CS2 hooks up to, usually NOR or NAND flash. +# S3.1/S3.2 controls boot mode, which may force J4 and S3.3 settings. +# S3.3 controls AEMIF bus width. + +if { [info exists J4_OPTION] } { + # NOR, NAND, SRAM, ... + set CS2_MODE $J4_OPTION +} else { + set CS2_MODE "" +} + +# ARM boot: +# S3.1 = 0, S3.2 = 0 ==> ROM/UBL boot via NAND (J4 == NAND) +# S3.1 = 1, S3.2 = 0 ==> AEMIF boot (J4 == NOR or SRAM) +# S3.1 = 0, S3.2 = 1 ==> ROM/UBL boot via HPI +# S3.1 = 1, S3.2 = 1 ==> ROM/UBL boot via UART (J4 == don't care) +# AEMIF bus width: +# S3.3 = 0 ==> 8 bit bus width +# S3.3 = 1 ==> 16 bit bus width +# DSP boot: +# S3.4 = 0 ==> controlled by ARM + +if { $CS2_MODE == "NOR" } { + # 16 Mbytes address space; 16 bit bus width + # (older boards used 32MB parts, with upper 16 MB unusable) + flash bank cfi 0x02000000 0x01000000 2 2 $_TARGETNAME + proc flashprobe {} { flash probe 0 } +} elseif { $CS2_MODE == "NAND" } { + # 64 Mbyte small page; 8 bit bus width + nand device davinci $_TARGETNAME 0x02000000 hwecc1 0x01e00000 + proc flashprobe {} { nand probe 0 } +} elseif { $CS2_MODE == "SRAM" } { + # 4 Mbyte address space; 16 bit bus width + # loaded via JTAG or HPI + proc flashprobe {} {} +} else { + # maybe it's HPI boot? can't tell... + echo "WARNING: CS2/flash configuration not recognized" + proc flashprobe {} {} +} + +# NOTE: disable or replace this call to dm6446evm_init if you're +# debugging new UBL code from SRAM (for NAND boot). +$_TARGETNAME configure -event reset-init { dm6446evm_init } + +# +# This post-reset init is called when the MMU isn't active, all IRQs +# are disabled, etc. It should do most of what a UBL does, except for +# loading code (like U-Boot) into DRAM and running it. +# +proc dm6446evm_init {} { + + puts "Initialize DM6446 EVM board" + + # FIXME initialize everything: + # - PLL1 + # - PLL2 + # - PINMUX + # - PSC + # - DDR + # - AEMIF + # - UART0 + # - icache + + flashprobe +} |