Author: wmb Date: Fri Jul 27 04:54:42 2012 New Revision: 3085 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3085
Log: OLPC EDI driver - handle differences between KB3731 and the new KB9010
Modified: cpu/arm/olpc/edi.fth
Modified: cpu/arm/olpc/edi.fth ============================================================================== --- cpu/arm/olpc/edi.fth Fri Jul 27 04:49:02 2012 (r3084) +++ cpu/arm/olpc/edi.fth Fri Jul 27 04:54:42 2012 (r3085) @@ -13,6 +13,41 @@ \ spi-out ( byte -- ) - Send byte \ spi-in ( -- byte ) - Receive byte
+0 value edi-chip-id +: kb9010? ( -- flag ) edi-chip-id 4 = ; + +: efcfg ( -- reg# ) kb9010? if h# fea0 else h# fead then ; +: efcmd ( -- reg# ) kb9010? if h# fea7 else h# feac then ; +: efdat ( -- reg# ) kb9010? if h# feaa else h# feab then ; +: rst8051 ( -- reg# ) kb9010? if h# f010 else h# ff14 then ; + +\ Issues with .py code +\ A14:A8 should be A15:A8 several places +\ inconsistent use of handle vs gd.handle in edi_erase_chip + +\ KB9010 stuff... +d# 59 d# 1024 * constant /kb9010-flash +h# fe80 constant wdtcfg +h# fe81 constant wdtpf +h# fe82 constant wdt +h# fea2 constant shccfg +\ h# fea5 constant xbicfg \ Unused +h# fea6 constant xbics +\ h# feae constant efdatr \ Unused +\ h# feaf constant emfburw +h# feb2 constant xbiwp +\ h# feb6 constant xbipump +\ h# feb7 constant xbifm +\ h# feb8 constant sbivr +h# feb9 constant xbis +h# ff0d constant clkcfg +h# ff0f constant pllcfg +h# ff1d constant ecsts +h# ff1f constant pllcfg2 +h# ff14 constant pxcfg + +\ end KB9010 stuff... + d# 128 constant /flash-page defer edi-progress ' drop to edi-progress ( n -- )
@@ -73,19 +108,25 @@ ; [then] : reset-8051 ( -- ) \ Reset 8-5 - h# f010 edi-b@ 1 or h# f010 edi-b! + rst8051 edi-b@ 1 or rst8051 edi-b! ; : unreset-8051 ( -- ) \ Reset 8-5 - h# f010 edi-b@ 1 invert and h# f010 edi-b! + rst8051 edi-b@ 1 invert and rst8051 edi-b! d# 2000 ms ;
\ 0 in bit 0 selects masked ROM as code source for 8051, 1 selects FLASH \ The 8051 should be in reset mode when changing that bit. + : select-flash ( -- ) \ Setup for access to FLASH inside the EC + kb9010? if exit then h# f011 edi-b@ 1 or h# f011 edi-b! ;
+: edi-read-id ( -- id ) + spi-cs-on h# 3e spi-out 0 spi-out spi-in spi-cs-off +; + : probe-rdid ( -- found? ) \ Verify that the EC is the one we think it is select-flash h# f01c ['] edi-w@ catch if ( x ) @@ -95,12 +136,15 @@ 1 invert and h# 3730 = ;
+: finished? ( b -- flag ) + kb9010? if 2 and 0= else h# 80 = then +; : wait-flash-busy ( -- ) \ Wait for an erase/programming operation to complete get-msecs h# 1000 + ( limit ) begin ( limit ) - h# fea0 edi-b@ ( limit b ) - h# 80 and if ( limit ) - drop exit + efcfg edi-b@ ( limit b ) + finished? if ( limit ) + drop exit ( -- ) then ( limit ) dup get-msecs - 0<= ( limit timeout? ) until ( limit ) @@ -108,11 +152,12 @@ true abort" EDI FLASH busy timeout" ;
-: flash-cmd ( b -- ) h# fea7 edi-b! ; +: flash-cmd ( b -- ) efcmd edi-b! ;
: set-offset ( offset -- ) - wbsplit ( offset-low offset-hi ) - h# fea9 edi-b! h# fea8 edi-b! ( ) + lbsplit drop ( offset-low mid hi ) + kb9010? if h# feaa edi-b! else drop then ( offset-low mid ) + h# fea9 edi-b! h# fea8 edi-b! ( ) ;
: erase-page ( offset -- ) @@ -121,14 +166,19 @@ h# 20 flash-cmd ( ) ;
-: erase-chip ( -- ) wait-flash-busy h# 60 flash-cmd wait-flash-busy ; +: erase-chip ( -- ) + 0 set-offset \ New code does this (and does not wait-flash-busy) + wait-flash-busy h# 60 flash-cmd wait-flash-busy +;
-: send-byte ( b offset -- ) set-offset h# feaa edi-b! 2 flash-cmd ; +: send-byte ( b offset -- ) set-offset efdat edi-b! 2 flash-cmd ;
: edi-program-page ( adr offset -- ) \ Clear HVPL wait-flash-busy h# 80 flash-cmd ( adr offset )
+ wait-flash-busy ( adr offset ) \ Necessary? + \ Fill the page buffer swap /flash-page bounds do ( offset ) i c@ over send-byte ( offset ) @@ -138,7 +188,7 @@
\ Commit the buffer to the FLASH memory wait-flash-busy ( ) \ Redundant wait? - h# 70 flash-cmd ( ) + h# 70 flash-cmd ( ) \ Program page command wait-flash-busy ( ) ; h# 7e80 constant ec-flags-offset @@ -162,11 +212,12 @@ edi-next-b@ i c! ( ) loop ( ) ; + : trim@ ( offset -- b ) set-offset h# 90 flash-cmd wait-flash-busy - h# feab edi-b@ + efdat edi-b@ \ reg: efdat ; : trim-tune ( -- ) \ firmware-id 0= if @@ -226,13 +277,76 @@ then \ then ; +: set-chip-id ( -- ) + ['] edi-read-id catch if ( ) + edi-read-id ( id ) + then ( id ) + to edi-chip-id +; +: kb9010-init ( -- ) + h# 00 xbics edi-b! + h# 00 xbiwp edi-b! \ Clear XBI write protection + h# ff wdt edi-b! \ Disable WDT + h# 00 wdtcfg edi-b! + h# 00 wdtpf edi-b! + h# 00 shccfg edi-b! \ Disable SHC + h# 0c clkcfg edi-b! \ Set the 8051 to 32Mhz + h# 08 efcfg edi-b! \ Enable the embedded flash cmd mode +; +base @ hex +create special-row 1f0 w, 1f1 w, 1f2 w, 1f4 w, 1f5 w, 1f6 w, 1f3 w, +create dest-regs feb9 w, feb6 w, feb6 w, feb7 w, feb8 w, feb8 w, feb7 w, +create source-bits 1f c, 0f c, 0f c, 0f c, 07 c, 1f c, 0f c, +create dest-bits 1f c, f0 c, 0f c, 0f c, e0 c, 1f c, f0 c, +create shift-cnt 0 c, 4 c, 0 c, 0 c, 5 c, 0 c, 4 c, +base ! +: kb9010-trimtune ( -- ) + h# 1ff trim@ 0<> if + 7 0 do + special-row i wa+ w@ edi-b@ ( data ) + source-bits i ca+ c@ or ( field ) + shift-cnt i ca+ c@ lshift ( field' ) + dest-regs i wa+ w@ edi-b@ ( field dest ) + dest-bits i ca+ c@ invert and or ( dest' ) + dest-regs i wa+ w@ edi-b! ( ) + loop + wait-flash-busy + then + h# 80 trim@ h# 5a = if + ecsts edi-b@ ( old-ecsts ) + dup 4 or ecsts edi-b! ( old-ecsts ) \ chipid is now pllcfg2 + + xbis edi-b@ h# 3f and ( old-ecsts xbis-bits ) + h# 81 edi-b@ 3 and 6 lshift or ( old-ecsts xbis-value ) + xbis edi-b! ( old-ecsts ) + + h# 82 edi-b@ h# f and 4 lshift ( old-ecsts pll-high ) + h# 83 edi-b@ h# f0 and 4 rshift or ( old-ecsts pll-value ) + pllcfg edi-b! ( old-ecsts ) + + pllcfg2 edi-b@ h# 3f and ( old-ecsts pll2-bits ) + h# 82 edi-b@ h# 30 and 2 lshift or ( old-ecsts pll2-value ) + pllcfg2 edi-b! ( old-ecsts ) + + ecsts edi-b! ( ) + then +; : edi-open ( -- ) \ slow-edi-clock \ Target speed between 1 and 2 MHz spi-start + + set-chip-id + \ The first operation often fails so retry it ['] select-flash catch if select-flash then reset-8051 - trim-tune + + kb9010? if + kb9010-init + kb9010-trimtune + else + trim-tune + then \ fast-edi-clock \ Target speed up to 16 MHz \ reset ;
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