target/linux/rb532-2.6/patches/140-cmdline_hack.patch

   1 diff -ur linux.old/arch/mips/kernel/head.S linux.dev/arch/mips/kernel/head.S
   2 --- linux.old/arch/mips/kernel/head.S   2006-12-06 17:30:27.000000000 +0100
   3 +++ linux.dev/arch/mips/kernel/head.S   2006-12-06 18:34:43.000000000 +0100
   4 @@ -129,15 +129,20 @@
   5  #endif
   6         .endm
   7
   8 -
   9         j kernel_entry
  10         nop
  11 -
  12 +       nop
  13 +
  14         /*
  15          * Reserved space for exception handlers.
  16          * Necessary for machines which link their kernels at KSEG0.
  17 +        * Use as temporary storage for the kernel command line, so that it
  18 +        * can be updated easily without having to relink the kernel.
  19          */
  20 -       .fill   0x400
  21 +
  22 +EXPORT(_image_cmdline)
  23 +       .ascii "CMDLINE:"
  24 +       .fill   0x3ec
  25
  26  EXPORT(stext)                                  # used for profiling
  27  EXPORT(_stext)
  28 diff -ur linux.old/arch/mips/rb500/prom.c linux.dev/arch/mips/rb500/prom.c
  29 --- linux.old/arch/mips/rb500/prom.c    2006-12-06 17:30:27.000000000 +0100
  30 +++ linux.dev/arch/mips/rb500/prom.c    2006-12-06 17:41:40.000000000 +0100
  31 @@ -128,6 +128,7 @@
  32         /* FIXME: STUB */
  33  }
  34
  35 +extern char _image_cmdline;
  36  void __init prom_setup_cmdline(void){
  37         char cmd_line[CL_SIZE];
  38         char *cp;
  39 @@ -163,6 +164,9 @@
  40                 strcpy(cp,prom_argv[i]);
  41                 cp+=strlen(prom_argv[i]);
  42         }
  43 +       *(cp++) = ' ';
  44 +       strcpy(cp,(&_image_cmdline + 8));
  45 +       cp += strlen(&_image_cmdline);
  46
  47         i=strlen(arcs_cmdline);
  48         if (i>0){