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/*
* Memory map:
*
* _RAMBASE
* : data segment
* : bss segment
* : heap
* : stack
*/
/*
* Bootstrap code for the STPC Consumer
* Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
*/
/*
* Written by Johan Rydberg, based on work by Daniel Kahlin.
* Rewritten by Eric Biederman
* 2005.12 yhlu add linuxbios_ram cross the vga font buffer handling
*/
/*
* We use ELF as output format. So that we can
* debug the code in some form.
*/
INCLUDE ldoptions
ENTRY(_start)
SECTIONS
{
. = _RAMBASE;
/*
* First we place the code and read only data (typically const declared).
* This get placed in rom.
*/
.text : {
_text = .;
*(.text);
*(.text.*);
. = ALIGN(16);
_etext = .;
}
.rodata : {
_rodata = .;
. = ALIGN(4);
console_drivers = .;
*(.rodata.console_drivers)
econsole_drivers = . ;
. = ALIGN(4);
pci_drivers = . ;
*(.rodata.pci_driver)
epci_drivers = . ;
cpu_drivers = . ;
*(.rodata.cpu_driver)
ecpu_drivers = . ;
*(.rodata)
*(.rodata.*)
/*
* kevinh/Ispiri - Added an align, because the objcopy tool
* incorrectly converts sections that are not long word aligned.
* This breaksthe linuxbios.strip target.
*/
. = ALIGN(4);
_erodata = .;
}
/*
* After the code we place initialized data (typically initialized
* global variables). This gets copied into ram by startup code.
* __data_start and __data_end shows where in ram this should be placed,
* whereas __data_loadstart and __data_loadend shows where in rom to
* copy from.
*/
.data : {
_data = .;
*(.data)
_edata = .;
}
/*
* bss does not contain data, it is just a space that should be zero
* initialized on startup. (typically uninitialized global variables)
* crt0.S fills between _bss and _ebss with zeroes.
*/
_bss = .;
.bss . : {
*(.bss)
*(.sbss)
*(COMMON)
}
_ebss = .;
_end = .;
. = ALIGN(STACK_SIZE);
_stack = .;
.stack . : {
/* Reserve a stack for each possible cpu */
/* the stack for ap will be put after pgtbl in 1M to CONFIG_LB_MEM_TOPK range when VGA and ROM_RUN and CONFIG_LB_MEM_TOPK>1024*/
. = ((CONFIG_CONSOLE_VGA || CONFIG_PCI_ROM_RUN)&&(_RAMBASE<0x100000)&&(CONFIG_LB_MEM_TOPK>(0x100000>>10)) ) ? STACK_SIZE : (CONFIG_MAX_CPUS*STACK_SIZE);
}
_estack = .;
_heap = .;
.heap . : {
/* Reserve 256K for the heap */
. = HEAP_SIZE ;
. = ALIGN(4);
}
_eheap = .;
/* The ram segment
* This is all address of the memory resident copy of linuxBIOS.
*/
_ram_seg = _text;
_eram_seg = _eheap;
_bogus = ASSERT( ((_eram_seg>>10)<CONFIG_LB_MEM_TOPK) , "please increase CONFIG_LB_MEM_TOPK");
_bogus = ASSERT( !((CONFIG_CONSOLE_VGA || CONFIG_PCI_ROM_RUN) && ((_ram_seg<0xa0000) && (_eram_seg>0xa0000))) , "please increase CONFIG_LB_MEM_TOPK and if still fail, try to set _RAMBASE more than 1M");
/DISCARD/ : {
*(.comment)
*(.note)
*(.note.*)
}
}
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