[openfirmware] [commit] r3656 - cpu/arm/olpc/1.75

[repository service]

Author: quozl
Date: Tue May  7 07:06:33 2013
New Revision: 3656
URL: http://tracker.coreboot.org/trac/openfirmware/changeset/3656

Log:
OLPC XO-1.75 - retain the file name portion of the /chosen bootpath property, so that the initramfs can deduce whether the system is being booted in activation mode or not.  The initramfs may also use ramdisk to deduce.  #12672.

Modified:
   cpu/arm/olpc/1.75/dtcompat.fth

Modified: cpu/arm/olpc/1.75/dtcompat.fth
==============================================================================
--- cpu/arm/olpc/1.75/dtcompat.fth	Thu May  2 04:36:27 2013	(r3655)
+++ cpu/arm/olpc/1.75/dtcompat.fth	Tue May  7 07:06:33 2013	(r3656)
@@ -9,15 +9,30 @@
 \ form.
 
 
-\ If "bootpath" (whose underlying storage is load-path) matches newpath$,
-\ replace it with oldpath$ .
-: $replaced?  ( oldpath$ newpath$ -- flag )
-   load-path cscount  substring?  if   ( oldpath$ )
-      load-path place-cstr             ( )
-      true                             ( flag )
-   else                                ( oldpath$ )
-      2drop false                      ( flag )
-   then                                ( flag )
+\ append a fragment to a path in place, returning the new path string
+: $append  ( path$ fragment$ -- 'path$ )
+   dup >r                       ( path$ fragment$       r: /fragment )
+   2over ca+                    ( path$ fragment$ dst   r: /fragment )
+   swap cmove                   ( path$                 r: /fragment )
+   r> ca+                       ( 'path$ )
+   2dup ca+ 0 swap c!           ( 'path$ )
+;
+
+\ if "bootpath" (whose underlying storage is load-path) starts with
+\ new$ then replace only those characters with old$
+: $replaced?  ( old$ new$ -- flag )
+   load-path cscount            ( old$ new$ path$ )
+   [char] : left-parse-string   ( old$ new$ tail$ head$ )
+   2swap 2>r                    ( old$ new$ head$  r: tail$ )
+   $=  if                       ( old$  r: tail$ )
+      load-path 0               ( old$ path$ )
+      2swap $append             ( path$  r: tail$ )
+      " :" $append              ( path$  r: tail$ )
+      2r> $append               ( path$ )
+      2drop true                ( flag )
+   else                         ( old$  r: tail$ )
+      2r> 4drop false           ( flag )
+   then                         ( flag )
 ;
 
 : fixup-bootpath  ( -- )
@@ -25,9 +40,9 @@
    /ramdisk 0=  if  exit  then
    " $bootpath in"n"t"t/sd@"  ramdisk-adr /ramdisk  $sindex  nip  if   ( )
       false to use-fdt?
-      " /sd at d4280000/disk at 1:/" " /sd/sdhci at d4280000/disk" $replaced?  ?exit
-      " /sd at d4280000/disk at 2:/" " /sd/sdhci at d4280800/disk" $replaced?  ?exit
-      " /sd at d4280000/disk at 3:/" " /sd/sdhci at d4281000/disk" $replaced?  ?exit
+      " /sd at d4280000/disk at 1" " /sd/sdhci at d4280000/disk" $replaced?  ?exit
+      " /sd at d4280000/disk at 2" " /sd/sdhci at d4280800/disk" $replaced?  ?exit
+      " /sd at d4280000/disk at 3" " /sd/sdhci at d4281000/disk" $replaced?  ?exit
    then
 ;