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view Common/CPU1-F429.ld @ 250:822416168585 bm-2
Buelmann: new implementation for ceiling
Since my first functional fix in the ceiling computation in
commit ceecabfddb57, I noticed that the computation used a
linear search, that became rather computational expensive after
that commit. The simple question is: why not a binary search?
So, this commit implements the binary search. But there is a long
story attached to this. Comparing ceiling results from hwOS and this
OSTC4 code were very different. Basically, the original OSTC4
algorithm computed the ceiling using the same GFlow to GFhigh
slope, in such a way, that the ceiling was in sync with the
presented deco stops, where the hwOS code presents a GFhigh
based ceiling.
This said, it is more logical when the OSTC4 and hwOS code give
similar results. This new recursive algorithm gives very similar
results for the ceiling compared to hwOS.
To be complete here, the Buelmann ceiling is the depth to which
you can ascend, so that the leading tissue reaches GFhigh. This
also explains why the deepest deco stop is normally deeper than
the ceiling (unless one dives with GF like 80/80).
The code implemented here is rather straightforward recursion.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author | Jan Mulder <jlmulder@xs4all.nl> |
---|---|
date | Thu, 11 Apr 2019 17:48:48 +0200 |
parents | a984d87a1ec0 |
children | 27c56f1b1856 |
line wrap: on
line source
/***************************************************************************** * -*- coding: UTF-8 -*- * * \file Common/CPU1-F429.ld * \brief Linker Script for CPU1 alias Discovery * \author Ac6 workbench, Heinrichs Weikamp, and JD Gascuel * \date 2018 * * \details * Linker script for STM32F429IIT6 Device from STM32F4 series * - 192Kbytes RAM * - 2048Kbytes ROM * * Set heap size, stack size and stack location according * to application requirements. * * Set memory bank area and size if external memory is used. * * $Id$ ***************************************************************************** * \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. ***************************************************************************** * HISTORY * 2017-12-18 jDG: Mix between std AC6 file and chw stm32f429zi_flash.ld settings. */ /* Entry Point */ ENTRY(Reset_Handler) OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") OUTPUT_ARCH(arm) SEARCH_DIR(.) /****************************************************************************/ /***************************** Memory Definition ****************************/ MEMORY { ROM_BOOT (rx) : ORIGIN = 0x08000000, LENGTH = 0x00040000 /* 256K */ ROM_MAIN (rx) : ORIGIN = 0x08040000, LENGTH = 0x00090000 /* 576K */ UPPER(rx) : ORIGIN = 0x08132000, LENGTH = 0xAE270 /* 713K */ RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192K CCRAM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K } /* Linker file shall be shared between Bootloader, Font and Firmware projects. Not used memory areas to be cut during bin generation */ /* Make sure ROM and UPPER are contiguous, and map 2MB */ /* TODO: At the moment the size of the defined memory will be directly reflected into the file size of resultion bin => Keep small until not used memory may be excluded from build */ /*ASSERT( ORIGIN(UPPER) - ORIGIN(ROM) == LENGTH(ROM), "ROM lower and upper region shall be continuous" ) /*ASSERT( LENGTH(ROM) + LENGTH(UPPER) == 2048K, "ROM lower + upper regions = 2MB" ) */ /* Highest address of the user mode stack */ /*_estack = ORIGIN(RAM) + LENGTH(RAM);*/ _Min_Heap_Size = 0; /* no required heap (malloc'ed space) */ _Min_Stack_Size = 0x08000; /* required 32K of stack */ /* Linker script to place sections and symbol values. Should be used together * with other linker script that defines memory regions FLASH and RAM. * It references following symbols, which must be defined in code: * Reset_Handler : Entry of reset handler * * It defines following symbols, which code can use without definition: * __exidx_start * __exidx_end * __preinit_array_start * __preinit_array_end * __init_array_start * __init_array_end * __fini_array_start * __fini_array_end * _sbss * __bss_start__ * _ebss * __bss_end__ * _edata * end * _end * _estack */ /****************************************************************************/ /*************************** Code and Data Sections *************************/ SECTIONS { /******************* NVIC reset and interupt vectors **********************/ .isr_vector 0x08040000 : { . = ALIGN(4); KEEP( *(.isr_vector) ) KEEP(*(.init)) } >ROM /* PROVIDE( firmware_FirmwareData = . );*/ .firmware_FirmwareData 0x08050000 : { KEEP( *(.firmware_firmware_data) ) } >ROM .font_firmware_data 0x08132000 : { KEEP( *(.font_firmware_data) ) } >UPPER .text 0x08054000 : { . = ALIGN(4); *(.text) /* .text sections (code) */ *(.text*) /* .text* sections (code) */ *(.glue_7) /* glue arm to thumb code */ *(.glue_7t) /* glue thumb to arm code */ *(.eh_frame) . = ALIGN(4); _etext = .; /* define a global symbols at end of code */ } >ROM /********************** Constant data into ROM memory *********************/ .rodata : { . = ALIGN(4); *(.rodata) /* .rodata sections (constants, strings, etc.) */ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ . = ALIGN(4); } >ROM .ARM.extab : { . = ALIGN(4); *(.ARM.extab* .gnu.linkonce.armextab.*) . = ALIGN(4); } >ROM .ARM : { . = ALIGN(4); __exidx_start = .; *(.ARM.exidx*) __exidx_end = .; . = ALIGN(4); } >ROM .preinit_array : { . = ALIGN(4); PROVIDE_HIDDEN( __preinit_array_start = . ); KEEP( *(.preinit_array*) ) PROVIDE_HIDDEN( __preinit_array_end = . ); . = ALIGN(4); } >ROM .init_array : { . = ALIGN(4); PROVIDE_HIDDEN( __init_array_start = . ); KEEP( *(SORT(.init_array.*)) ) KEEP( *(.init_array*) ) PROVIDE_HIDDEN( __init_array_end = . ); . = ALIGN(4); } >ROM .fini_array : { . = ALIGN(4); PROVIDE_HIDDEN( __fini_array_start = . ); KEEP( *(SORT(.fini_array.*)) ) KEEP( *(.fini_array*) ) PROVIDE_HIDDEN( __fini_array_end = . ); . = ALIGN(4); } >ROM /************* The program code and other data into ROM memory ************/ /************* Data and Structures at absolute address in ROM *************/ /* FIXME: this sets the SFirmwareData structure, not the code ... */ .bootloader_firmware_data 0x0800A000 : { PROVIDE( bootloader_FirmwareData = . ); KEEP( *(.bootloader_firmware_data) ) } > ROM /* Define Known Address for Each Font */ /* Flash Sector 23 is protected (bootloader font + image) => use end of sector 22 */ /* TODO: the linker does not seem to work as the one of used for initial bootloader ==> Reconstruct layout to keep it compatible with the first version */ /* TODO: cleanup during next iteration */ /* Put fonts and images in UPPER region */ .upper_fonts 0x08132040 : { __upper_font_data = .; . = 0x13E; *(.upper_fonts.image_data_FontT144_0x0030) . = 0x02515; *(.upper_fonts.image_data_FontT144_0x0031) . = 0x03469; *(.upper_fonts.image_data_FontT144_0x0032) . = 0x4FDC; *(.upper_fonts.image_data_FontT144_0x0033) . = 0x6862; *(.upper_fonts.image_data_FontT144_0x0034) . = 0x86C2; *(.upper_fonts.image_data_FontT144_0x0035) . = 0x9FB3; *(.upper_fonts.image_data_FontT144_0x0036) . = 0xBB26; *(.upper_fonts.image_data_FontT144_0x0037) . = 0xD845; *(.upper_fonts.image_data_FontT144_0x0038) . = 0xF34D; *(.upper_fonts.image_data_FontT144_0x0039) . = 0x10EC0; *(.upper_fonts.image_data_FontT24_0x0020) *(.upper_fonts.image_data_FontT24_0x0021) *(.upper_fonts.image_data_FontT24_0x0022) *(.upper_fonts.image_data_FontT24_0x0023) *(.upper_fonts.image_data_FontT24_0x0024) *(.upper_fonts.image_data_FontT24_0x0025) *(.upper_fonts.image_data_FontT24_0x0026) *(.upper_fonts.image_data_FontT24_0x0027) *(.upper_fonts.image_data_FontT24_0x0028) *(.upper_fonts.image_data_FontT24_0x0029) *(.upper_fonts.image_data_FontT24_0x002a) *(.upper_fonts.image_data_FontT24_0x003f) *(.upper_fonts.image_data_FontT24_0x002c) *(.upper_fonts.image_data_FontT24_0x002d) *(.upper_fonts.image_data_FontT24_0x002e) *(.upper_fonts.image_data_FontT24_0x002f) *(.upper_fonts.image_data_FontT24_0x0030) *(.upper_fonts.image_data_FontT24_0x0031) *(.upper_fonts.image_data_FontT24_0x0032) *(.upper_fonts.image_data_FontT24_0x0033) *(.upper_fonts.image_data_FontT24_0x0034) *(.upper_fonts.image_data_FontT24_0x0035) *(.upper_fonts.image_data_FontT24_0x0036) *(.upper_fonts.image_data_FontT24_0x0037) *(.upper_fonts.image_data_FontT24_0x0038) *(.upper_fonts.image_data_FontT24_0x0039) *(.upper_fonts.image_data_FontT24_0x003a) *(.upper_fonts.image_data_FontT24_0x003b) *(.upper_fonts.image_data_FontT24_0x003c) *(.upper_fonts.image_data_FontT24_0x003d) *(.upper_fonts.image_data_FontT24_0x003e) . = . + 0x8c; *(.upper_fonts.image_data_FontT24_0x0040) *(.upper_fonts.image_data_FontT24_0x0041) *(.upper_fonts.image_data_FontT24_0x0042) *(.upper_fonts.image_data_FontT24_0x0043) *(.upper_fonts.image_data_FontT24_0x0044) *(.upper_fonts.image_data_FontT24_0x0045) *(.upper_fonts.image_data_FontT24_0x0046) *(.upper_fonts.image_data_FontT24_0x0047) *(.upper_fonts.image_data_FontT24_0x0048) *(.upper_fonts.image_data_FontT24_0x0049) *(.upper_fonts.image_data_FontT24_0x004a) *(.upper_fonts.image_data_FontT24_0x004b) *(.upper_fonts.image_data_FontT24_0x004c) *(.upper_fonts.image_data_FontT24_0x004d) *(.upper_fonts.image_data_FontT24_0x004e) *(.upper_fonts.image_data_FontT24_0x004f) *(.upper_fonts.image_data_FontT24_0x0050) *(.upper_fonts.image_data_FontT24_0x0051) *(.upper_fonts.image_data_FontT24_0x0052) *(.upper_fonts.image_data_FontT24_0x0053) *(.upper_fonts.image_data_FontT24_0x0054) *(.upper_fonts.image_data_FontT24_0x0055) *(.upper_fonts.image_data_FontT24_0x0056) *(.upper_fonts.image_data_FontT24_0x0057) *(.upper_fonts.image_data_FontT24_0x0058) *(.upper_fonts.image_data_FontT24_0x0059) *(.upper_fonts.image_data_FontT24_0x005a) *(.upper_fonts.image_data_FontT24_0x005b) *(.upper_fonts.image_data_FontT24_0x005c) *(.upper_fonts.image_data_FontT24_0x005d) *(.upper_fonts.image_data_FontT24_0x005e) *(.upper_fonts.image_data_FontT24_0x005f) *(.upper_fonts.image_data_FontT24_0x0060) *(.upper_fonts.image_data_FontT24_0x0061) *(.upper_fonts.image_data_FontT24_0x0062) *(.upper_fonts.image_data_FontT24_0x0063) . = . + 0x1c; *(.upper_fonts.image_data_FontT24_0x0064) *(.upper_fonts.image_data_FontT24_0x0065) *(.upper_fonts.image_data_FontT24_0x0066) *(.upper_fonts.image_data_FontT24_0x0067) *(.upper_fonts.image_data_FontT24_0x0068) *(.upper_fonts.image_data_FontT24_0x0069) *(.upper_fonts.image_data_FontT24_0x006a) *(.upper_fonts.image_data_FontT24_0x006b) *(.upper_fonts.image_data_FontT24_0x006c) *(.upper_fonts.image_data_FontT24_0x006d) *(.upper_fonts.image_data_FontT24_0x006e) *(.upper_fonts.image_data_FontT24_0x006f) *(.upper_fonts.image_data_FontT24_0x0070) *(.upper_fonts.image_data_FontT24_0x0071) *(.upper_fonts.image_data_FontT24_0x0072) *(.upper_fonts.image_data_FontT24_0x0073) *(.upper_fonts.image_data_FontT24_0x0074) *(.upper_fonts.image_data_FontT24_0x0075) *(.upper_fonts.image_data_FontT24_0x0076) *(.upper_fonts.image_data_FontT24_0x0077) *(.upper_fonts.image_data_FontT24_0x0078) *(.upper_fonts.image_data_FontT24_0x0079) *(.upper_fonts.image_data_FontT24_0x007a) *(.upper_fonts.image_data_FontT24_0x007b) *(.upper_fonts.image_data_FontT24_0x007c) . = . + 0x1c; *(.upper_fonts.image_data_FontT24_0x007d) *(.upper_fonts.image_data_FontT24_0x007e) *(.upper_fonts.image_data_FontT24_0x00a1) *(.upper_fonts.image_data_FontT24_0x00bf) *(.upper_fonts.image_data_FontT24_0x00c1) *(.upper_fonts.image_data_FontT24_0x00c4) *(.upper_fonts.image_data_FontT24_0x00c6) *(.upper_fonts.image_data_FontT24_0x00c7) *(.upper_fonts.image_data_FontT24_0x00c9) *(.upper_fonts.image_data_FontT24_0x00cd) *(.upper_fonts.image_data_FontT24_0x00d1) *(.upper_fonts.image_data_FontT24_0x00d3) *(.upper_fonts.image_data_FontT24_0x00d6) *(.upper_fonts.image_data_FontT24_0x00da) *(.upper_fonts.image_data_FontT24_0x00dc) *(.upper_fonts.image_data_FontT24_0x00df) *(.upper_fonts.image_data_FontT24_0x00e0) *(.upper_fonts.image_data_FontT24_0x00e1) *(.upper_fonts.image_data_FontT24_0x00e2) *(.upper_fonts.image_data_FontT24_0x00e4) *(.upper_fonts.image_data_FontT24_0x00e6) *(.upper_fonts.image_data_FontT24_0x00e7) *(.upper_fonts.image_data_FontT24_0x00e8) *(.upper_fonts.image_data_FontT24_0x00e9) *(.upper_fonts.image_data_FontT24_0x00ec) *(.upper_fonts.image_data_FontT24_0x00ed) *(.upper_fonts.image_data_FontT24_0x00f0) *(.upper_fonts.image_data_FontT24_0x00f1) *(.upper_fonts.image_data_FontT24_0x00f2) *(.upper_fonts.image_data_FontT24_0x00f3) *(.upper_fonts.image_data_FontT24_0x00f6) *(.upper_fonts.image_data_FontT24_0x00f9) *(.upper_fonts.image_data_FontT24_0x00fa) *(.upper_fonts.image_data_FontT24_0x00fc) *(.upper_fonts.image_data_FontT24_0x00ff) *(.upper_fonts.image_data_FontT24_0x0152) *(.upper_fonts.image_data_FontT24_0x0153) *(.upper_fonts.image_data_FontT24_0x0178) *(.upper_fonts.image_data_FontT24_0x002b) . = . + 0x1d642; *(.upper_images.image_data_ostc_fuer_Tauchcomputer_240px) *(.upper_fonts.image_data_FontT84_0x002e) . = . + 0x9f; *(.upper_fonts.image_data_FontT84_0x0030) . = . + 0x0d; *(.upper_fonts.image_data_FontT84_0x0031) . = . + 0xaa; *(.upper_fonts.image_data_FontT84_0x0032) . = . + 0x7b; *(.upper_fonts.image_data_FontT84_0x0033) . = . + 0x38; *(.upper_fonts.image_data_FontT84_0x0034) . = . + 0x7f; *(.upper_fonts.image_data_FontT84_0x0035) . = . + 0x77; *(.upper_fonts.image_data_FontT84_0x0036) . = . + 0x7b; *(.upper_fonts.image_data_FontT84_0x0037) . = . + 0x0d; *(.upper_fonts.image_data_FontT84_0x0038) . = . + 0x2b; *(.upper_fonts.image_data_FontT84_0x0039) . = . + 0xe8; *(.upper_fonts.image_data_FontT54_0x0022) *(.upper_fonts.image_data_FontT54_0x0025) . = . + 0x112; *(.upper_fonts.image_data_FontT54_0x0027) . = . + 0xd8; *(.upper_fonts.image_data_FontT54_0x002a) . = . + 0x133; *(.upper_fonts.image_data_FontT54_0x002d) . = . + 0x1d7; *(.upper_fonts.image_data_FontT54_0x002e) . = . + 0x17b; *(.upper_fonts.image_data_FontT54_0x002f) . = . + 0x02; *(.upper_fonts.image_data_FontT54_0x0030) . = . + 0x0ba; *(.upper_fonts.image_data_FontT54_0x0031) . = . + 0x27d; *(.upper_fonts.image_data_FontT54_0x0032) . = . + 0xe3; *(.upper_fonts.image_data_FontT54_0x0033) . = . + 0x35; *(.upper_fonts.image_data_FontT54_0x0034) . = . + 0x68; *(.upper_fonts.image_data_FontT54_0x0035) . = . + 0x35; *(.upper_fonts.image_data_FontT54_0x0036) . = . + 0xba; *(.upper_fonts.image_data_FontT54_0x0037) . = . + 0x191; *(.upper_fonts.image_data_FontT54_0x0038) . = . + 0xe3; *(.upper_fonts.image_data_FontT54_0x0039) . = . + 0xe3; *(.upper_fonts.image_data_FontT54_0x003a) . = . + 0x7b; *(.upper_fonts.image_data_FontT54_0x0043) . = . + 0x3b; *(.upper_fonts.image_data_FontT54_0x006c) . = . + 0x2d; *(.upper_fonts.image_data_FontT54_0x006d) . = . + 0x94; *(.upper_fonts.image_data_FontT54_0x00ba) . = . + 0x0a; *(.upper_fonts.image_data_FontT105_0x002*) *(.upper_fonts.image_data_FontT105_0x003*) *(.upper_fonts.image_data_FontT105_0x0043) . = . + 0x17c8; *(.upper_fonts.image_data_FontT105_0x007c) *(.upper_fonts.image_data_FontT105_0x00ba) *(.upper_fonts.image_data_FontT105_54_0x006d) *(.upper_fonts.image_data_FontT54_0x0068) . = . + 0x1195; *(.upper_fonts.image_data_FontT42_0x00b0) *(.upper_fonts.image_data_FontT42_0x0020) . = . + 0x23; *(.upper_fonts.image_data_FontT42_0x002*) *(.upper_fonts.image_data_FontT42_0x003*) *(.upper_fonts.image_data_FontT42_0x004*) *(.upper_fonts.image_data_FontT42_0x005*) . = . + 0x420; *(.upper_fonts.image_data_FontT42_0x006*) *(.upper_fonts.image_data_FontT42_0x0070) *(.upper_fonts.image_data_FontT42_0x0071) *(.upper_fonts.image_data_FontT42_0x0072) *(.upper_fonts.image_data_FontT42_0x0073) *(.upper_fonts.image_data_FontT42_0x0074) *(.upper_fonts.image_data_FontT42_0x0075) *(.upper_fonts.image_data_FontT42_0x0076) *(.upper_fonts.image_data_FontT42_0x0077) *(.upper_fonts.image_data_FontT42_0x0078) *(.upper_fonts.image_data_FontT42_0x0079) . = . + 0x12c0; *(.upper_fonts.image_data_FontT42_*) *(.upper_fonts.image_data_T54addon_0x002b_PLUS*) *(.upper_fonts.image_data_T54addon_0x0040_AT*) *(.upper_fonts.image_data_FontT48addon*) *(.upper_fonts.image_data_FontT24plus_0x00fb*) *(.upper_fonts.image_data_FontT24plus_0x00fd*) *(.upper_fonts.image_data_FontT48_*) *(.upper_fonts.image_data_awe48_*) /* moving of fonts from lower to upper */ *(.upper_fonts.*) __upper_font_data_end = .; } >UPPER .upper_directory 0x081DEF00 : { __font_directory = .; *(.upper_font_directory.Awe48) *(.upper_font_directory.FontT24) *(.upper_font_directory.FontT42) *(.upper_font_directory.FontT48) *(.upper_font_directory.FontT54) *(.upper_font_directory.FontT84) *(.upper_font_directory.FontT105) *(.upper_font_directory.FontT144) *(.upper_font_directory.Batt24*) __font_directory_end = .; LONG( -1 ); /* Magic End Marker */ } >UPPER /* Used by the startup to initialize data */ _sidata = LOADADDR(.data); /************ Initialized Data Sections into RAM & ROM Memory **************/ .data : { . = ALIGN(4); _sdata = .; /* create a global symbol at data start */ *(.data) /* .data sections */ *(.data*) /* .data* sections */ *(vtable) . = ALIGN(4); _edata = .; /* define a global symbol at data end */ } >RAM AT>ROM /*************** Uninitialized Data Section into RAM Memory ****************/ .bss : { . = ALIGN(4); /* This is used by the startup in order to initialize the .bss secion */ _sbss = .; /* define a global symbol at bss start */ __bss_start__ = _sbss; *(.bss) *(.bss*) *(COMMON) . = ALIGN(4); _ebss = .; /* define a global symbol at bss end */ __bss_end__ = _ebss; } >RAM /********************** User_heap_stack section ****************************/ /* just to check that there is enough RAM left */ ._user_heap_stack : { . = ALIGN(8); PROVIDE ( end = . ); PROVIDE ( _end = . ); PROVIDE ( __end__ = . ); . = . + _Min_Heap_Size; . = . + _Min_Stack_Size; . = ALIGN(8); _estack = .; } >RAM /* Remove information from the compiler libraries */ /DISCARD/ : { libc.a ( * ) libm.a ( * ) libgcc.a ( * ) } .ARM.attributes 0 : { *(.ARM.attributes) } }