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Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:53 2008 UTC (16 years, 3 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD
Changes since 1.1: +0 -0 lines

Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: ldscript,v 1.1 2006/07/28 17:12:06 kettenis Exp $	*/
/*	$NetBSD: ldscript,v 1.6 2005/12/11 12:17:10 christos Exp $	*/

OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
	      "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(FLASH)
MEMORY
{
  /* We will locate the .text section in flash, and will run directly
     from there just long enough to relocate our .text and .data into
     a small chunk of SDRAM starting at (SDRAM + 1M).  */
  flash : o = 0xf0080000, l = 6M
  sdram : o = 0x00100000, l = 1M	/* kernel loads at 0xa0200000 */
}
SECTIONS
{
  FLASH = 0x00100000;

  /* Read-only sections, merged into text segment: */
  __text_store = FLASH;
  .text      :
  AT (FLASH)
  {
    *(.text)
    *(.text.*)
    *(.stub)
    *(.glue_7t) *(.glue_7)
    *(.rodata) *(.rodata.*)
  } > sdram =0
  PROVIDE (__etext = .);
  PROVIDE (_etext = .);
  PROVIDE (etext = .);
  __data_store = FLASH + SIZEOF(.text);
  .data    :
  AT (LOADADDR(.text) + SIZEOF(.text))
  {
    __data_start = . ;
    *(.data)
    *(.data.*)
  } > sdram
  .sdata     : 
  AT (LOADADDR(.data) + SIZEOF(.data))
  {
    *(.sdata) 
    *(.sdata.*)
    . = ALIGN(32 / 8);
  } > sdram
  _edata = .;
  PROVIDE (edata = .);
  __bss_start = .;
  __bss_start__ = .;
  .sbss      :
  {
    PROVIDE (__sbss_start = .);
    PROVIDE (___sbss_start = .);
    *(.dynsbss)
    *(.sbss)
    *(.sbss.*)
    *(.scommon)
    PROVIDE (__sbss_end = .);
    PROVIDE (___sbss_end = .);
  } > sdram
  .bss       :
  {
   *(.dynbss)
   *(.bss)
   *(.bss.*)
   *(COMMON)
   /* Align here to ensure that the .bss section occupies space up to
      _end.  Align after .bss to ensure correct alignment even if the
      .bss section disappears because there are no input sections.  */
   . = ALIGN(32 / 8);
  } > sdram
  . = ALIGN(32 / 8);
  _end = .;
  _bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
  PROVIDE (end = .);
  .image   (FLASH + SIZEOF(.text) + SIZEOF(.data) + SIZEOF(.sdata)) :
  AT (LOADADDR(.sdata) + SIZEOF(.sdata))
  {
    *(.image)
  }
}