Changeset a5cbaf25 in clfs-embedded


Ignore:
Timestamp:
Oct 14, 2013, 8:57:24 AM (9 years ago)
Author:
Andrew Bradford <andrew@…>
Branches:
master
Children:
54fde8f
Parents:
91f1994
git-author:
Andrew Bradford <andrew@…> (10/10/2013 12:03:46 PM)
git-committer:
Andrew Bradford <andrew@…> (10/14/2013 08:57:24 AM)
Message:

arm-fpu: Update recommendations, remove wrong fpus

Update recommendations to:
ARM9 with soft
Cortex-A with hard

Remove soft-vfp and none fpu types, they aren't valid.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • BOOK/cross-tools/arm/variables.xml

    r91f1994 ra5cbaf25  
    2121  tables at the bottom of this page as a reference.</para>
    2222
    23   <para os="a1">Most ARM processors are little endian, it is a safe choice.
    24   If your processor is an ARM9, good choices include: triplet of
    25   armv5l-unknown-linux-uclibeabi, ARM arch of armv5t, float of softfp, and fpu
    26   of either none or softvfp. ARM9 processors do not always have hardware
    27   floating point abilities. If your processor is a Cortex-A8 or Cortex-A9, good
    28   choices include: triplet of armv7a-unknown-linux-uclibceabi, ARM arch of
    29   armv7-a, float of hard, and fpu of vfpv3-d16.</para>
     23  <para os="a1">Most ARM processors are little endian, it is a safe choice.  If
     24  your processor is an ARM9, good choices include: triplet of
     25  armv5l-unknown-linux-uclibeabi, ARM arch of armv5t, and float of soft.  ARM9
     26  processors do not usually have hardware floating point abilities. If your
     27  processor is a Cortex-A series, which often have hardware floating point
     28  capability, good choices include: triplet of
     29  armv7a-unknown-linux-uclibceabi, ARM arch of armv7-a, float of hard, and fpu
     30  of vfpv3-d16.</para>
    3031
    3132  <para os="a2">First, set the host and target triplets:</para>
     
    4849export CLFS_ARM_MODE="<replaceable>[arm or thumb]</replaceable>"</userinput></screen>
    4950
    50   <para os="f1">If your target CPU has hard floating point support (not all ARM
    51   CPUs do), set the following CLFS_FLOAT variable to either "hard" or "softfp".
    52   If your target CPU does not have hard floating point support, set the following
    53   CLFS_FLOAT vairable to "soft".</para>
     51  <para os="f1">If your target CPU has hardware floating point support (not all
     52  ARM CPUs do), then set the following CLFS_FLOAT variable to either "hard" or
     53  "softfp".  Use "softfp" if you need to integrate binaries compiled with
     54  "soft".  Use "hard" if you don't.  If your target CPU does not have hard
     55  floating point support, set the following CLFS_FLOAT vairable to
     56  "soft".</para>
    5457
    5558<screen os="f2"><userinput>export CLFS_FLOAT="<replaceable>[hard, softfp, or soft]"</replaceable></userinput></screen>
     
    201204        <row>
    202205          <entry>neon-vfpv4</entry>
    203           <entry>softvfp</entry>
    204           <entry>none</entry>
    205206        </row>
    206207      </tbody>
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