Author: wmb Date: Fri Jun 29 22:52:33 2012 New Revision: 3022 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3022
Log: Checked in TI MSP430 Bootstrap Loader download code.
Added: cpu/arm/olpc/bsl.fth
Added: cpu/arm/olpc/bsl.fth ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ cpu/arm/olpc/bsl.fth Fri Jun 29 22:52:33 2012 (r3022) @@ -0,0 +1,328 @@ +\ See license at end of file +purpose: Downloader for TI MSP430 BootStrap Loader (BSL) protocol + +\ devalias bsl /uart@NNNN:9600,8,e,1//bsl-protocol + +h# fe016000 value bsl-uart-base \ Virtual address of UART; set later + +: bsl-baud ( baud-rate -- ) \ 9600,8,e,1 + uart-base >r bsl-uart-base to uart-base baud h# 1b 3 uart! r> to uart-base +; + +: send ( char -- ) uart-base >r bsl-uart-base to uart-base uemit r> to uart-base ; + +: receive? ( -- false | char true ) + uart-base >r bsl-uart-base to uart-base + ukey? if ukey true else false then + r> to uart-base +; + +0 value rst-gpio# +0 value test-gpio# +\ : bsl-config-test ( -- ) +: init-gpios + fallback-in-ih ?dup if dup remove-input close-dev 0 to fallback-in-ih then + fallback-out-ih ?dup if dup remove-output close-dev 0 to fallback-out-ih then + + d# 115 to test-gpio# + d# 116 to rst-gpio# + + test-gpio# 0 swap af! + rst-gpio# 0 swap af! +; + +: bsl-open ( -- ) + init-gpios + + rst-gpio# gpio-clr + test-gpio# gpio-clr + rst-gpio# gpio-dir-out + test-gpio# gpio-dir-out + h# 16000 +io to bsl-uart-base + + d# 9600 bsl-baud +; +: bsl-close ( -- ) + rst-gpio# gpio-dir-in + test-gpio# gpio-dir-in +; +: msp430-off ( -- ) + rst-gpio# gpio-clr + test-gpio# gpio-clr +; + +: dly ( -- ) d# 10 ms ; +: start-bsl ( -- ) + bsl-open + d# 250 ms + test-gpio# gpio-set + dly + test-gpio# gpio-clr + dly + test-gpio# gpio-set + dly + rst-gpio# gpio-set + dly + test-gpio# gpio-clr +; +: flush-bsl ( -- ) begin receive? while drop repeat ; +: rst-bsl ( -- ) msp430-off start-bsl flush-bsl ; + +d# 1000 constant timeout +: wait-byte ( -- char ) + get-msecs timeout + ( limit ) + begin ( limit ) + receive? if ( limit char ) + nip exit ( -- char ) + then ( limit ) + dup get-msecs - 0< ( limit timeout? ) + until ( limit ) + drop true abort" BSL data timeout" +; +: ack? ( -- okay? ) + get-msecs timeout + ( limit ) + begin ( limit ) + receive? if ( limit char ) + case + h# 90 of ( limit ) + drop true exit ( -- true ) + endof + h# a0 of ( limit ) + ." NAK!" + drop false exit + endof + endcase + then ( limit ) + dup get-msecs - 0< ( limit timeout? ) + until ( limit ) + drop false ( false ) +; +: bsl-sync ( -- ) + d# 4 0 do + h# 80 send ack? if unloop exit then + loop + true abort" BSL unresponsive" +; + +0 value checksum + +: +sum ( w -- ) checksum xor to checksum ; +: send-summed ( w -- ) + dup +sum wbsplit swap send send +; +: send-length ( n -- ) + dup 1 and abort" BSL odd length!" + dup d# 255 > abort" BSL length >255" + dup bwjoin send-summed +; +: frame( ( extra-len cmd -- ) + bsl-sync ( extra-len cmd ) + 0 to checksum ( extra-len cmd ) + h# 80 swap bwjoin ( extra-len cmd,hdr ) + send-summed ( extra-len ) + 4 + send-length ( ) +; + +: send-address ( w -- ) send-summed ; +: send-data-length ( w -- ) send-summed ; +: send-xx ( -- ) 0 send-summed ; \ Send don't care word +: send-data ( adr len -- ) + bounds ?do i le-w@ send-summed /w +loop +; +: )frame-no-ack ( -- ) + checksum h# ffff xor wbsplit swap send send +; +: )frame ( -- ) + )frame-no-ack + ack? 0= abort" BSL - no ACK!" +; + +: rx-data-block ( adr len device-adr -- ) + over h# 12 frame( ( adr len device-adr ) + send-summed ( adr len ) \ device address + dup send-summed ( adr len ) \ data length + send-data ( ) + )frame +; +: rx-password ( adr len -- ) + dup d# 32 <> abort" BSL password must be 32 bytes long" + dup h# 10 frame( ( adr len ) + send-xx send-xx ( adr len ) + send-data ( ) + )frame +; +: ff-password ( -- ) + " "(ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff)" + rx-password +; +: 00-password ( -- ) + " "(00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff)" + rx-password +; +: (erase) ( device-adr code -- ) + swap ( device-adr code ) + 0 h# 16 frame( ( code device-adr ) + send-summed ( code ) + send-summed ( ) + )frame +; +: erase-segment ( device-adr -- ) h# a502 (erase) ; +: erase-main ( device-adr -- ) h# a504 (erase) ; +: mass-erase ( -- ) 0 h# a506 (erase) ; +: change-baud-rate ( d3 d2 d1 -- ) + 0 h# 20 frame( ( d3 d2 d1 ) + swap bwjoin send-summed ( d3 ) + send-summed ( ) + )frame +; +: set-mem-offset ( device-adr -- ) + 0 h# 21 frame( ( device-adr ) + send-xx ( device-adr ) + send-summed ( ) + )frame +; +: load-pc ( device-adr -- ) + 0 h# 1a frame( ( device-adr ) + send-summed ( ) + send-xx ( ) + )frame +; +: wait-word ( -- w ) wait-byte wait-byte bwjoin dup +sum ; + +: )frame-receive ( adr len -- ) + )frame-no-ack + wait-byte case + h# 80 of endof + h# a0 of true abort" NAK!" endof + ( default ) ." Received unexpected response frame first byte " dup .x cr + abort + endcase + wait-byte ?dup if + ." Received unexpected response frame second byte " dup .x cr + abort + then + h# 80 to checksum + + wait-word wbsplit ( adr len response-len1 response-len2 ) + + over <> abort" BSL - response length check byte mismatch" ( adr len response-len ) + over <> abort" BSL - unexpected response length" ( adr len ) + bounds ?do wait-word i le-w! /w +loop ( ) + wait-word drop ( ) \ Get checksum and add it in + checksum h# ffff <> abort" BSL - bad response checksum" ( ) +; +: tx-data-block ( adr len device-adr -- ) + 0 h# 14 frame( ( adr len device-adr ) + send-summed ( adr len ) + dup send-summed ( adr len ) + )frame-receive ( ) +; +: tx-bsl-version ( adr len -- ) + dup d# 16 <> abort" BSL version buffer must be 16 bytes long" + 0 h# 1e frame( ( adr len ) + send-xx ( adr len ) + send-xx ( adr len ) + )frame-receive ( ) +; + +d# 250 constant /bsl-max-read +: bsl-read ( adr len device-adr -- ) + >r even ( adr len' r: device-adr ) + begin dup 0> while ( adr len r: device-adr ) + r@ (cr .x + 2dup /bsl-max-read min ( adr len adr thislen r: device-adr ) + r@ tx-data-block ( adr len r: device-adr ) + /bsl-max-read /string ( adr' len' r: device-adr ) + r> /bsl-max-read + >r ( adr len r: device-adr' ) + repeat ( adr len r: device-adr' ) + r> 3drop +; + +0 value next-address +0 value line-#bytes +d# 50 buffer: binary-buf + +: hex-number ( adr len -- n ) + push-hex ( adr len ) + $number abort" Bad number in TI TXT file" ( n ) + pop-base +; +: program-bytes ( adr len -- ) + d# 50 0 do ( adr len ) + dup if ( adr len ) + bl left-parse-string ( adr' len' head$ ) + hex-number ( adr len n ) + binary-buf i + c! ( adr len ) + else ( adr len ) + 2drop ( ) + (cr next-address . ( ) + i 1 and if ( ) + h# ff binary-buf i + c! ( ) + i 1+ ( len ) + else ( ) + i ( len ) + then + binary-buf swap next-address rx-data-block + next-address i + to next-address + unloop exit + then + loop ( adr len ) + true abort" TI TXT Line too long!" +; +: handle-line ( adr len -- ) + dup 0= if 2drop exit then ( adr len ) + over c@ case + [char] @ of ( adr len ) + 1 /string hex-number to next-address + endof + [char] q of ( adr len ) + 2drop ( ) + endof ( adr len ) + ( default ) ( adr len char ) + -rot program-bytes ( char ) + endcase ( ) +; +: force-erase ( -- ) + ." Resetting/erasing" cr + rst-bsl + ['] 00-password catch drop + rst-bsl + ff-password +; +d# 100 buffer: line-buf +: $bsl-ti-text-file ( filename$ -- ) + $read-open ( ) + force-erase ( ) + ." Programming" cr + begin ( ) + line-buf d# 100 ifd @ read-line abort" Read line failed" + while ( len ) + line-buf swap handle-line ( ) + repeat ( len ) + drop + ifd @ fclose +; + +\ LICENSE_BEGIN +\ Copyright (c) 2012 FirmWorks +\ +\ Permission is hereby granted, free of charge, to any person obtaining +\ a copy of this software and associated documentation files (the +\ "Software"), to deal in the Software without restriction, including +\ without limitation the rights to use, copy, modify, merge, publish, +\ distribute, sublicense, and/or sell copies of the Software, and to +\ permit persons to whom the Software is furnished to do so, subject to +\ the following conditions: +\ +\ The above copyright notice and this permission notice shall be +\ included in all copies or substantial portions of the Software. +\ +\ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +\ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +\ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +\ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +\ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +\ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +\ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +\ +\ LICENSE_END
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