portapack-mayhem/firmware/standalone/pacman/external.ld
Bernd Herzog 100bea644c
Version independent external apps (standalone apps) (#2145)
This pull requests adds a new type of external app to the firmware: The standalone app.

Pros:

Will work after an upgrade.
Size of image is only limited by shared heap size of M0 (application) (64kb total).
Cons:

No full access to all functions in the main firmware. One well defined (and versioned) API handles all communication.
The Pacman app was converted to be the first the the new kind.
2024-05-12 14:55:11 +02:00

119 lines
2.5 KiB
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/*
Copyright (C) 2024 Bernd Herzog
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
MEMORY
{
ram : org = 0xADB10000, len = 64k /* DO NOT CHANGE the address. We make the image relocateable on load. It needs to be 0xADB10000 */
}
__ram_start__ = ORIGIN(ram);
__ram_size__ = LENGTH(ram);
__ram_end__ = __ram_start__ + __ram_size__;
SECTIONS
{
. = 0;
_text = .;
startup : ALIGN(16) SUBALIGN(16)
{
KEEP(*(.standalone_application_information));
} > ram
constructors : ALIGN(4) SUBALIGN(4)
{
PROVIDE(__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE(__init_array_end = .);
} > ram
destructors : ALIGN(4) SUBALIGN(4)
{
PROVIDE(__fini_array_start = .);
KEEP(*(.fini_array))
KEEP(*(SORT(.fini_array.*)))
PROVIDE(__fini_array_end = .);
} > ram
.text : ALIGN(16) SUBALIGN(16)
{
*(.text.startup.*)
*(.text)
*(.text.*)
*(.rodata)
*(.rodata.*)
*(.glue_7t)
*(.glue_7)
*(.gcc*)
} > ram
.ARM.extab :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > ram
.ARM.exidx : {
PROVIDE(__exidx_start = .);
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
PROVIDE(__exidx_end = .);
} > ram
.eh_frame_hdr :
{
*(.eh_frame_hdr)
} > ram
.eh_frame : ONLY_IF_RO
{
*(.eh_frame)
} > ram
.textalign : ONLY_IF_RO
{
. = ALIGN(8);
} > ram
.bss ALIGN(4) : ALIGN(4)
{
. = ALIGN(4);
PROVIDE(_bss_start = .);
*(.bss)
*(.bss.*)
*(COMMON)
. = ALIGN(4);
PROVIDE(_bss_end = .);
} > ram
. = ALIGN(4);
_etext = .;
_textdata = _etext;
.data ALIGN(4) : AT (_textdata)
{
. = ALIGN(4);
PROVIDE(_data = .);
*(.data)
*(.data.*)
*(.ramtext)
. = ALIGN(4);
PROVIDE(_edata = .);
} > ram
}
PROVIDE(end = .);
_end = .;