Author: wmb Date: Tue Aug 9 06:26:34 2011 New Revision: 2432 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2432
Log: Alex - added SPI FLASH reprogramming.
Added: cpu/x86/pc/alex/spiui.fth dev/intel/spi.fth Modified: cpu/x86/pc/alex/devices.fth dev/olpc/spiflash/spiflash.fth ofw/fs/cbfs.fth
Modified: cpu/x86/pc/alex/devices.fth ============================================================================== --- cpu/x86/pc/alex/devices.fth Tue Aug 9 06:25:40 2011 (r2431) +++ cpu/x86/pc/alex/devices.fth Tue Aug 9 06:26:34 2011 (r2432) @@ -34,6 +34,14 @@ h# 28 to vector-base1 device-end
+fload ${BP}/dev/olpc/spiflash/flashif.fth \ Generic FLASH interface + +fload ${BP}/dev/olpc/spiflash/memflash.fth \ Memory-mapped FLASH read access + +warning @ warning off +: stand-init-io stand-init-io h# ffc0.0000 to flash-base ; +warning ! + fload ${BP}/ofw/fs/cbfs.fth \ Coreboot ROM filesystem
\ Create the top-level device node to access the entire boot FLASH device @@ -168,8 +176,16 @@
fload ${BP}/ofw/core/muxdev.fth \ I/O collection/distribution device
+fload ${BP}/dev/olpc/spiflash/spiif.fth \ Generic low-level SPI bus access +fload ${BP}/dev/intel/spi.fth \ SPI FLASH programming + fload ${BP}/cpu/x86/pc/reset.fth \ reset-all
+: ?enough-power ; \ Implement based on AC presence and battery status + +fload ${BP}/cpu/x86/pc/alex/spiui.fth \ User interface for SPI FLASH programming +: urom ( -- ) " flash! u:\alex.rom" evaluate ; + \ LICENSE_BEGIN \ Copyright (c) 2011 FirmWorks \
Added: cpu/x86/pc/alex/spiui.fth ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ cpu/x86/pc/alex/spiui.fth Tue Aug 9 06:26:34 2011 (r2432) @@ -0,0 +1,177 @@ +\ See license at end of file +purpose: User interface for reflashing SPI FLASH parts + +\ This code is concerned with the user interface for getting +\ a new firmware image into memory and using it to program +\ a FLASH device from that image. The details of how to actually +\ access the FLASH device are defined elsewhere. + +h# 4000 constant /chunk \ Convenient sized piece for progress reports + +: write-flash-range ( adr end-offset start-offset -- ) + ." Writing" cr + ?do ( adr ) + \ Save time - don't write if the data is the same + i .x (cr ( adr ) + spi-us d# 20 >= if ( adr ) + \ Just write if reading is slow + true ( adr must-write? ) + else ( adr ) + dup /flash-block i flash-verify ( adr must-write? ) + then ( adr must-write? ) + + if + i flash-erase-block + dup /flash-block i flash-write ( adr ) + then + /flash-block + ( adr' ) + /flash-block +loop ( adr ) + cr drop ( ) +; + +: verify-flash-range ( adr end-offset start-offset -- ) + ." Verifying" cr + ?do ( adr ) + i .x (cr + dup /flash-block i flash-verify abort" Verify failed" + /flash-block + ( adr' ) + /flash-block +loop ( adr ) + cr drop ( ) +; + + +\ Perform a series of sanity checks on the new firmware image. + +[ifdef] load-base +: flash-buf load-base ; +[else] +/flash buffer: flash-buf +[then] + +0 value file-loaded? + +: -cbid ( offset -- ) flash-buf /flash + swap - ; + +: check-id-string ( offset expect$ -- ) + rot -cbid @ -cbid cscount ( expect$ got$ ) + 2over 2over $= 0= if ( expect$ got$ ) + ." Expecting " 2swap type ." , got " type cr + abort + then ( expect$ got$ ) + 4drop ( ) +; +: ?coreboot-id ( -- ) + h# 14 -cbid @ /flash <> abort" Coreboot flash size mismatch" + h# 1c " Samsung" check-id-string + h# 18 " Alex" check-id-string +; +: ?cbfs ( -- ) + flash-buf " LARCHIVE" comp abort" Image file is not in CBFS format" + \ We could also check the integrity of the CBFS headers +; + +: ?image-valid ( len -- ) + /flash <> abort" Image file is the wrong length" + + ?cbfs + ?coreboot-id +; + +: $get-file ( "filename" -- ) + $read-open + flash-buf /flash ifd @ fgets ( len ) + ifd @ fclose + + ?image-valid + + true to file-loaded? +; + +: ?file ( -- ) + file-loaded? 0= if + ." You must first load a valid FLASH image file with" cr + ." get-file filename" cr + abort + then +; + +: read-flash ( "filename" -- ) + writing + /flash 0 do + i .x (cr + flash-buf i + /chunk i flash-read + /chunk +loop + flash-buf /flash ofd @ fputs + ofd @ fclose +; + +: verify ( -- ) ?file flash-buf /flash 0 verify-flash-range ; + +: verify-firmware ( -- ) + flash-buf /flash 0 verify-flash-range \ Verify first part +; + +: write-firmware ( -- ) + flash-buf /flash 0 write-flash-range \ Write first part +; + +: reflash ( -- ) \ Flash from data already in memory + ?file + flash-write-enable + + write-firmware + + ['] verify-firmware catch if + ." Verify failed. Retrying once" cr + spi-identify + write-firmware + verify-firmware + then + flash-write-disable +; + +defer fw-filename$ ' null$ to fw-filename$ + +: get-file ( ["filename"] -- ) + parse-word ( adr len ) + dup 0= if 2drop fw-filename$ then ( adr len ) + ." Reading " 2dup type cr ( adr len ) + $get-file +; + +: flash ( ["filename"] -- ) get-file ?enough-power reflash ; +: flash! ( ["filename"] -- ) get-file reflash ; + +: safe-flash-read ( -- ) + flash-buf /flash 0 flash-read +; + +dev /flash +: selftest ( -- error? ) + .cbfs +; +device-end + +\ LICENSE_BEGIN +\ Copyright (c) 2011 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
Added: dev/intel/spi.fth ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ dev/intel/spi.fth Tue Aug 9 06:26:34 2011 (r2432) @@ -0,0 +1,258 @@ +\ See license at end of file +purpose: Driver for SPI FLASH chips connected via Intel NM10 SPI interface + +h# fed1f020 value spi-base +: spi-reg-b! ( b offset -- ) spi-base + c! ; +: spi-reg-w! ( w offset -- ) spi-base + w! ; +: spi-reg-l! ( l offset -- ) spi-base + l! ; +: spi-reg-b@ ( offset -- b ) spi-base + c@ ; +: spi-reg-w@ ( offset -- w ) spi-base + w@ ; +: spi-reg-l@ ( offset -- l ) spi-base + l@ ; + +: spi-data ( -- adr ) spi-base 8 + ; + +: spi-stat@ ( -- w ) 0 spi-reg-w@ ; +: spi-stat! ( w -- ) 0 spi-reg-w! ; +: spi-ctrl! ( w -- ) 2 spi-reg-w! ; +: spi-addr! ( l -- ) 4 spi-reg-l! ; +: spi-prefix! ( n -- ) h# 54 spi-reg-w! ; +: spi-type! ( n -- ) h# 56 spi-reg-w! ; +: spi-opcode! ( b opcode# -- ) h# 58 + spi-reg-b! ; + +d# 64 constant max-spi-data + + +\ Commands +\ # t DCOA P Op +\ 0 0 4102 5 <no address> <1 data in> read-status +\ 1 2 4n12 3 <ADDR> <N data in> read +\ 2 0 4322 9f <no address> <3 data in> jedec-id +\ 3 2 4232 90 <ADDR=0> <2 data in> 90-id +\ 4 2 4142 ab <ADDR=0> <1 data in> ab-id +\ 5 1 4156 6 1 <no address> <1 data out> write-status +\ 6 3 4n66 6 2 <ADDR> <N data out> write +\ 7 3 0076 6 d8 <ADDR> <no data> erase-block + +4 base ! 33122020 hex constant cycle-types +: intel-spi-start ( -- ) + h# 0406 spi-prefix! \ Prefix 0 is write-enable, 1 is write-disable + h# d80201ab h# 5c spi-reg-l! \ opcodes 7-4 + h# 909f0305 h# 58 spi-reg-l! \ opcodes 3-0 + cycle-types h# 56 spi-reg-w! + h# 0c spi-stat! +; +: spi-do-cmd ( code -- ) + begin spi-stat@ 1 and 0= until + spi-ctrl! + begin spi-stat@ 4 and until + 4 spi-stat! +; +: spi-read-status ( -- b ) + h# 4002 spi-do-cmd + spi-data c@ +; +: wait-write-done ( -- ) + d# 100000 0 do + spi-read-status 1 and 0= if unloop exit then + d# 10 us + loop +; +: spi-read-n ( adr len offset -- ) + spi-addr! ( adr len ) + dup 1- 8 lshift h# 4012 or spi-do-cmd ( adr len ) + spi-data -rot move ( ) +; +: jedec-id ( -- b3b2b1 ) + h# 4222 spi-do-cmd + spi-data w@ spi-data 2+ c@ wljoin +; +: 90-id ( -- b2b1 ) + 0 spi-addr! + h# 4132 spi-do-cmd + spi-data w@ +; +: ab-id ( -- b1 ) + 0 spi-addr! + h# 4042 spi-do-cmd + spi-data c@ +; +: spi-write-status ( b -- ) + spi-data c! ( ) + h# 4056 spi-do-cmd ( ) + wait-write-done ( ) +; +: spi-write-n ( adr len offset -- ) + spi-addr! ( adr len ) + tuck ( len adr len ) + spi-data swap move ( len ) + 1- 8 lshift h# 4066 or spi-do-cmd ( ) + wait-write-done ( ) +; +: erase-spi-block ( offset -- ) + spi-addr! ( ) + h# 0076 spi-do-cmd ( ) + wait-write-done ( ) +; + +\ Write within one SPI FLASH page. Offset + len must not cross a page boundary + +: write-spi-page ( adr len offset -- ) + begin over while ( adr len offset ) + over max-spi-data min >r ( adr len offset r: this ) + 2 pick r@ 2 pick spi-write-n ( adr len offset r: this ) + rot r@ + rot r@ - rot r> + ( adr' len' offset' ) + repeat ( adr len offset ) + 3drop ( ) +; + +: read-spi-flash ( adr len offset -- ) + begin over while ( adr len offset ) + over max-spi-data min >r ( adr len offset r: this ) + 2 pick r@ 2 pick spi-read-n ( adr len offset r: this ) + rot r@ + rot r@ - rot r> + ( adr' len' offset' ) + repeat ( adr len offset ) + 3drop ( ) +; + +\ Verify the contents of SPI FLASH starting at offset against +\ the memory range adr,len . Aborts with a message on mismatch. + +: verify-spi-flash ( adr len offset -- mismatch? ) + over alloc-mem >r ( adr len offset r: temp-adr ) + r@ 2 pick rot ( adr len temp-adr len offset r: temp-adr ) + flash-read ( adr len r: temp-adr ) + tuck r@ swap comp ( len mismatch? r: temp-adr ) + r> rot free-mem ( mismatch? ) +; + +h# 10000 constant /spi-eblock \ Smallest erase block common to all chips +h# 100 constant /spi-page \ Largest write for page-oriented chips + +\ Figures out how many bytes can be written in one transaction, +\ subject to not crossing a 256-byte page boundary. + +: left-in-page ( len offset -- len offset #left ) + \ Determine how many bytes are left in the page containing offset + /spi-page over /spi-page 1- and - ( adr len offset left-in-page ) + + \ Determine the number of bytes to write in this transaction + 2 pick min ( adr len offset r: #to-write ) +; + +\ Adjust address, length, and write offset by the number of +\ bytes transferred in the last action + +: adjust ( adr len offset #transferred -- adr+ len- offset+ ) + tuck + >r /string r> +; + +\ Determine if it's worthwhile to write; writing FF's is pointless +: non-blank? ( adr len -- non-blank? ) h# ff bskip 0<> ; + +\ Write as many bytes as can be done in one operation, limited +\ by page boundaries, and adjust the parameters to reflect the +\ data that was written. If the data that would be written is +\ all FFs, save time by not actually writing it. + +: write-spi-some ( adr len offset -- adr' len' offset' ) + left-in-page ( adr len offset #to-write ) + + 3 pick over non-blank? if ( adr len offset #to-write ) + 3 pick over 3 pick ( adr len offset #to-write adr #to-write offset ) + write-spi-page ( adr len offset #to-write ) + then ( adr len offset #to-write ) + + adjust ( adr' len' offset' ) +; + +\ Write data from the range adr,len to SPI FLASH beginning at offset +\ Does not erase automatically; you have to do that beforehand. + +\ This version works for parts that support page writes with +\ multiple data bytes after command 2 + +: write-spi-flash ( adr len offset -- ) + begin over while ( adr len offset ) + write-spi-some ( adr' len' offset' ) + repeat ( adr 0 offset ) + 3drop +; + +\ Get the SPI FLASH ID and decode it to the extent that we need. +\ There are several different commands to get ID information, +\ and the various SPI FLASH chips support different subsets of +\ those commands. The AB command seems to be supported by all +\ of them, so it's a good starting point. + +0 value spi-id# +: spi-identify ( -- ) + ab-id to spi-id# + spi-id# case + h# 13 of endof + h# 15 of endof + h# 34 of endof + ( default ) true abort" Unsupported SPI FLASH ID" + endcase + 0 spi-write-status \ Turn off write protect bits +; + +\ Display a message telling what kind of part was found + +: .spi-id ( -- ) + ." SPI FLASH is " + spi-id# case + h# 13 of ." type 13 - Spansion, Winbond, or ST" endof + h# 15 of ." type 15 - Macronyx" endof + h# 34 of ." type 34 - Macronyx" endof + endcase +; + +: spi-flash-open ( -- ) + \ One retry + spi-start ['] spi-identify catch if + spi-start spi-identify + then +; +: spi-flash-write-enable ( -- ) flash-open .spi-id cr ; + +: use-spi-flash-read ( -- ) ['] read-spi-flash to flash-read ; + +\ Install the SPI FLASH versions as their implementations. +: use-spi-flash ( -- ) + ['] spi-flash-open to flash-open + ['] noop to flash-close + ['] spi-flash-write-enable to flash-write-enable + ['] noop to flash-write-disable + ['] write-spi-flash to flash-write + ['] verify-spi-flash to flash-verify + ['] erase-spi-block to flash-erase-block + use-mem-flash-read \ Might be overridden + h# 40.0000 to /flash + /spi-eblock to /flash-block +; +use-spi-flash +' intel-spi-start to spi-start + +\ LICENSE_BEGIN +\ Copyright (c) 2011 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
Modified: dev/olpc/spiflash/spiflash.fth ============================================================================== --- dev/olpc/spiflash/spiflash.fth Tue Aug 9 06:25:40 2011 (r2431) +++ dev/olpc/spiflash/spiflash.fth Tue Aug 9 06:26:34 2011 (r2432) @@ -64,7 +64,7 @@ \ You have to wait after any command that modifies stuff \ inside the part - writes, erases, status register writes
-: wait-write-done ( -- timeout? ) +: wait-write-done ( -- ) \ The Spansion part's datasheet claims that the only operation \ that takes longer than 500mS is bulk erase and we don't ever \ want to use that command @@ -73,7 +73,6 @@ spi-read-status 1 and 0= if unloop exit then \ Test WIP bit d# 10 us loop - -1 ;
\ Common start sequence for writes and erases - anything that
Modified: ofw/fs/cbfs.fth ============================================================================== --- ofw/fs/cbfs.fth Tue Aug 9 06:25:40 2011 (r2431) +++ ofw/fs/cbfs.fth Tue Aug 9 06:26:34 2011 (r2432) @@ -1,7 +1,6 @@ purpose: Coreboot filesystem ("CBFS") package \ See license at end of file
-h# ffc0.0000 value flash-base : .cbfs-type ( type -- ) case h# 10 of ." stage" endof
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