133 lines
3 KiB
Plaintext
133 lines
3 KiB
Plaintext
/*
|
|
Linker file used to link the bootloader.
|
|
*/
|
|
|
|
|
|
/* Simplified memory map for the bootloader
|
|
|
|
The main purpose is to make sure the bootloader can load into main memory
|
|
without overwriting itself.
|
|
*/
|
|
MEMORY
|
|
{
|
|
/* I/O */
|
|
dport0_seg (RW) : org = 0x3FF00000, len = 0x10
|
|
/* IRAM POOL1, used for APP CPU cache. We can abuse it in bootloader because APP CPU is still held in reset, the main app enables APP CPU cache */
|
|
iram_seg (RWX) : org = 0x40078000, len = 0x8000
|
|
/* 64k at the end of DRAM, after ROM bootloader stack */
|
|
dram_seg (RW) : org = 0x3FFF0000, len = 0x10000
|
|
}
|
|
|
|
/* Default entry point: */
|
|
ENTRY(call_start_cpu0);
|
|
|
|
|
|
SECTIONS
|
|
{
|
|
.iram1.text :
|
|
{
|
|
. = ALIGN (16);
|
|
*(.entry.text)
|
|
*(.init.literal)
|
|
*(.init)
|
|
} > iram_seg
|
|
|
|
|
|
/* Shared RAM */
|
|
.dram0.bss (NOLOAD) :
|
|
{
|
|
. = ALIGN (8);
|
|
_bss_start = ABSOLUTE(.);
|
|
*(.dynsbss)
|
|
*(.sbss)
|
|
*(.sbss.*)
|
|
*(.gnu.linkonce.sb.*)
|
|
*(.scommon)
|
|
*(.sbss2)
|
|
*(.sbss2.*)
|
|
*(.gnu.linkonce.sb2.*)
|
|
*(.dynbss)
|
|
*(.bss)
|
|
*(.bss.*)
|
|
*(.gnu.linkonce.b.*)
|
|
*(COMMON)
|
|
. = ALIGN (8);
|
|
_bss_end = ABSOLUTE(.);
|
|
} >dram_seg
|
|
|
|
.dram0.data :
|
|
{
|
|
_data_start = ABSOLUTE(.);
|
|
*(.data)
|
|
*(.data.*)
|
|
*(.gnu.linkonce.d.*)
|
|
*(.data1)
|
|
*(.sdata)
|
|
*(.sdata.*)
|
|
*(.gnu.linkonce.s.*)
|
|
*(.sdata2)
|
|
*(.sdata2.*)
|
|
*(.gnu.linkonce.s2.*)
|
|
*(.jcr)
|
|
_data_end = ABSOLUTE(.);
|
|
} >dram_seg
|
|
|
|
.dram0.rodata :
|
|
{
|
|
_rodata_start = ABSOLUTE(.);
|
|
*(.rodata)
|
|
*(.rodata.*)
|
|
*(.gnu.linkonce.r.*)
|
|
*(.rodata1)
|
|
__XT_EXCEPTION_TABLE_ = ABSOLUTE(.);
|
|
*(.xt_except_table)
|
|
*(.gcc_except_table)
|
|
*(.gnu.linkonce.e.*)
|
|
*(.gnu.version_r)
|
|
*(.eh_frame)
|
|
. = (. + 3) & ~ 3;
|
|
/* C++ constructor and destructor tables, properly ordered: */
|
|
__init_array_start = ABSOLUTE(.);
|
|
KEEP (*crtbegin.o(.ctors))
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
|
|
KEEP (*(SORT(.ctors.*)))
|
|
KEEP (*(.ctors))
|
|
__init_array_end = ABSOLUTE(.);
|
|
KEEP (*crtbegin.o(.dtors))
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
|
|
KEEP (*(SORT(.dtors.*)))
|
|
KEEP (*(.dtors))
|
|
/* C++ exception handlers table: */
|
|
__XT_EXCEPTION_DESCS_ = ABSOLUTE(.);
|
|
*(.xt_except_desc)
|
|
*(.gnu.linkonce.h.*)
|
|
__XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
|
|
*(.xt_except_desc_end)
|
|
*(.dynamic)
|
|
*(.gnu.version_d)
|
|
_rodata_end = ABSOLUTE(.);
|
|
/* Literals are also RO data. */
|
|
_lit4_start = ABSOLUTE(.);
|
|
*(*.lit4)
|
|
*(.lit4.*)
|
|
*(.gnu.linkonce.lit4.*)
|
|
_lit4_end = ABSOLUTE(.);
|
|
. = ALIGN(4);
|
|
_heap_start = ABSOLUTE(.);
|
|
} >dram_seg
|
|
|
|
.iram.text :
|
|
{
|
|
_stext = .;
|
|
_text_start = ABSOLUTE(.);
|
|
*(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
|
|
*(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
|
|
*(.fini.literal)
|
|
*(.fini)
|
|
*(.gnu.version)
|
|
_text_end = ABSOLUTE(.);
|
|
_etext = .;
|
|
} > iram_seg
|
|
|
|
}
|