openfirmware June 2012

openfirmware@openfirmware.info

1 participants
34 discussions

[commit] r2997 - in cpu: arm/olpc/1.75 x86/pc/olpc x86/pc/olpc/via
by repository service 01 Jun '12

01 Jun '12

Author: wmb Date: Fri Jun 1 20:57:38 2012 New Revision: 2997 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2997 Log: OLPC - use a different commit id for the NANDblaster code, fixing a build dependency problem introduced by the name change from start.s to start.S in the x86 directory of the client library. Modified: cpu/arm/olpc/1.75/mcnand-version.fth cpu/x86/pc/olpc/versions.fth cpu/x86/pc/olpc/via/mcnand-version.fth Modified: cpu/arm/olpc/1.75/mcnand-version.fth ============================================================================== --- cpu/arm/olpc/1.75/mcnand-version.fth Fri Jun 1 20:33:29 2012 (r2996) +++ cpu/arm/olpc/1.75/mcnand-version.fth Fri Jun 1 20:57:38 2012 (r2997) @@ -3,6 +3,6 @@ \ With a specific ID, mcastnand.bth will download a tarball without .git stuff. \ With "test", mcastnand.bth will clone the git head if build/multicast-nand/ \ is not already present, then you can modify the git subtree as needed. -macro: MCNAND_VERSION 732fc96 +macro: MCNAND_VERSION e9c0662 \ macro: MCNAND_VERSION test \ macro: MCNAND_VERSION HEAD Modified: cpu/x86/pc/olpc/versions.fth ============================================================================== --- cpu/x86/pc/olpc/versions.fth Fri Jun 1 20:33:29 2012 (r2996) +++ cpu/x86/pc/olpc/versions.fth Fri Jun 1 20:57:38 2012 (r2997) @@ -2,7 +2,7 @@ \ The overall firmware revision macro: FW_MAJOR F -macro: FW_MINOR 11 +macro: FW_MINOR 11ma \ The EC microcode macro: EC_VERSION 1_2_1 @@ -26,6 +26,6 @@ \ With a specific ID, mcastnand.bth will download a tarball without .git stuff. \ With "test", mcastnand.bth will clone the git head if build/multicast-nand/ \ is not already present, then you can modify the git subtree as needed. -macro: MCNAND_VERSION 732fc96 +macro: MCNAND_VERSION e9c0662 \ macro: MCNAND_VERSION test \ macro: MCNAND_VERSION HEAD Modified: cpu/x86/pc/olpc/via/mcnand-version.fth ============================================================================== --- cpu/x86/pc/olpc/via/mcnand-version.fth Fri Jun 1 20:33:29 2012 (r2996) +++ cpu/x86/pc/olpc/via/mcnand-version.fth Fri Jun 1 20:57:38 2012 (r2997) @@ -3,6 +3,6 @@ \ With a specific ID, mcastnand.bth will download a tarball without .git stuff. \ With "test", mcastnand.bth will clone the git head if build/multicast-nand/ \ is not already present, then you can modify the git subtree as needed. -macro: MCNAND_VERSION 732fc96 +macro: MCNAND_VERSION e9c0662 \ macro: MCNAND_VERSION test \ macro: MCNAND_VERSION HEAD

1 0

[commit] r2996 - ofw/tokenizer
by repository service 01 Jun '12

01 Jun '12

Author: wmb Date: Fri Jun 1 20:33:29 2012 New Revision: 2996 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2996 Log: FCode tokenizer - removed the macro versions of */ and */mod, which do not work correctly (the intermediate result can overflow). If you need to use these functions in an FCode driver, use um* and um/mod to perform the calculations. Modified: ofw/tokenizer/crosslis.fth Modified: ofw/tokenizer/crosslis.fth ============================================================================== --- ofw/tokenizer/crosslis.fth Fri Jun 1 20:31:33 2012 (r2995) +++ ofw/tokenizer/crosslis.fth Fri Jun 1 20:33:29 2012 (r2996) @@ -140,8 +140,10 @@ : 2+ 2 + ; : 2- 2 - ; : <<a << ; -: */mod >r * r> /mod ; -: */ >r * r> / ; +\ These are not correct because the intermediate overflows. +\ If you need these functions, write them explicitly using um* and um/mod +\ : */mod >r * r> /mod ; +\ : */ >r * r> / ; : xu>l ( ux -- ul ) drop ; \ 64 -> 32 : lu>x ( ul -- ux ) 0 ; \ 32 -> 64

1 0

[commit] r2995 - forth/lib
by repository service 01 Jun '12

01 Jun '12

Author: wmb Date: Fri Jun 1 20:31:33 2012 New Revision: 2995 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2995 Log: isin.fth - before svn 2994, the calculation in set-period was using */, which is supposed to use a double-precision intermediate value to avoid overflow. However, */ is not a primitive FCode, so the FCode tokenizer was synthesizing it (incorrectly) using (overflowing) * and /. The correct fix, to retain precision, is to implement "u*/" using (double-precision) um* and um/mod . Modified: forth/lib/isin.fth Modified: forth/lib/isin.fth ============================================================================== --- forth/lib/isin.fth Fri Jun 1 14:21:35 2012 (r2994) +++ forth/lib/isin.fth Fri Jun 1 20:31:33 2012 (r2995) @@ -27,17 +27,17 @@ 2/ dup to #cycle/2 2/ to #cycle/4 ; +: u*/ ( u1 unum udenom -- u2 ) >r um* r> um/mod nip ; : set-period ( cycle/4 -- ) dup to #cycle/4 ( cycle/4 ) 2* dup to #cycle/2 ( cycle/2 ) 2* dup to #cycle ( cycle ) fs over / to freq ( period ) - pi swap / fs * to fstep ( ) + pi fs rot u*/ to fstep ( ) ; \ Multiply two fractional numbers where the scale factor is 2^15 -\ : times ( n1 n2 -- n3 ) d# 32767 */ ; \ Insignificantly more accurate, but slower -: times ( n1 n2 -- n3 ) * d# 15 rshift ; +: times ( n1 n2 -- n3 ) d# 32767 u*/ ; \ Computes (1 - (theta^2 / divisor) * last) : sin-step ( last divisor -- next ) thetasq swap / times one min one swap - ; @@ -48,7 +48,7 @@ \ 1 - (t^2/(1*2)) * (1 - (t^2/(3*4)) * (1 - (t^2/(5*6)) * (1 - (t^2/(7*8)))) : icos ( index -- frac ) - fstep fs 2/ */ to theta + fstep fs 2/ u*/ to theta theta dup times to thetasq one d# 90 cos-step d# 56 cos-step d# 30 cos-step d# 12 cos-step 2 cos-step one min ; @@ -59,7 +59,7 @@ \ theta * (1 - (theta^2/(2*3)) * (1 - (theta^2/(4*5)) * (1 - (theta^2/(6*7)) * (1 - (theta^2/(8*9)))))) \ This is good for the first quadrant only, i.e. 0 <= index <= fs / freq / 4 : calc-sin ( index -- frac ) - fstep fs 2/ */ to theta + fstep fs 2/ u*/ to theta theta dup times to thetasq one d# 72 sin-step d# 42 sin-step d# 20 sin-step 6 sin-step theta times one min ;

1 0

[commit] r2994 - forth/lib
by repository service 01 Jun '12

01 Jun '12

Author: quozl Date: Fri Jun 1 14:21:35 2012 New Revision: 2994 URL: http://tracker.coreboot.org/trac/openfirmware/changeset/2994 Log: OLPC XO-1 XO-1.5 - restore normal sweep audio test volume, #11846. A multiply overflowed 32-bits in set-period. Regression introduced in svn 2260. Modified: forth/lib/isin.fth Modified: forth/lib/isin.fth ============================================================================== --- forth/lib/isin.fth Thu May 31 22:07:15 2012 (r2993) +++ forth/lib/isin.fth Fri Jun 1 14:21:35 2012 (r2994) @@ -32,7 +32,7 @@ 2* dup to #cycle/2 ( cycle/2 ) 2* dup to #cycle ( cycle ) fs over / to freq ( period ) - pi fs rot */ to fstep ( ) + pi swap / fs * to fstep ( ) ; \ Multiply two fractional numbers where the scale factor is 2^15

1 0

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

openfirmware June 2012