diff options
Diffstat (limited to 'libopencm3/lib/lpc43xx/m4')
| -rw-r--r-- | libopencm3/lib/lpc43xx/m4/Makefile | 50 | ||||
| -rw-r--r-- | libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx.ld | 127 | ||||
| -rw-r--r-- | libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_ram_only.ld | 139 | ||||
| -rw-r--r-- | libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_rom_to_ram.ld | 128 | ||||
| -rw-r--r-- | libopencm3/lib/lpc43xx/m4/vector_chipset.c | 48 |
5 files changed, 492 insertions, 0 deletions
diff --git a/libopencm3/lib/lpc43xx/m4/Makefile b/libopencm3/lib/lpc43xx/m4/Makefile new file mode 100644 index 0000000..a3d3b03 --- /dev/null +++ b/libopencm3/lib/lpc43xx/m4/Makefile @@ -0,0 +1,50 @@ +## +## This file is part of the libopencm3 project. +## +## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> +## Copyright (C) 2012 Michael Ossmann <mike@ossmann.com> +## Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> +## Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> +## +## This library is free software: you can redistribute it and/or modify +## it under the terms of the GNU Lesser General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This library 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 Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public License +## along with this library. If not, see <http://www.gnu.org/licenses/>. +## + +LIBNAME = libopencm3_lpc43xx +SRCLIBDIR ?= ../.. + +FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16 +PREFIX ?= arm-none-eabi + +CC = $(PREFIX)-gcc +AR = $(PREFIX)-ar +CFLAGS = -O2 -g3 \ + -Wall -Wextra -Wimplicit-function-declaration \ + -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \ + -Wundef -Wshadow \ + -I../../../include -fno-common \ + -mcpu=cortex-m4 -mthumb -Wstrict-prototypes \ + -ffunction-sections -fdata-sections -MD \ + $(FP_FLAGS) -DLPC43XX -DLPC43XX_M4 + +ARFLAGS = rcs + +# LPC43xx common files for M4 / M0 +OBJ_LPC43XX = gpio.o scu.o i2c.o ssp.o uart.o timer.o + +#LPC43xx M4 specific file + Generic LPC43xx M4/M0 files +OBJS = $(OBJ_LPC43XX) ipc.o + +VPATH += ../:../../cm3 + +include ../../Makefile.include diff --git a/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx.ld b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx.ld new file mode 100644 index 0000000..c289b35 --- /dev/null +++ b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx.ld @@ -0,0 +1,127 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2012 Michael Ossmann <mike@ossmann.com> + * Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> + * Copyright (C) 2012 Jared Boone <jared@sharebrained.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Generic linker script for LPC43XX targets using libopencm3. */ + +/* Memory regions must be defined in the ld script which includes this one. */ + +/* Enforce emmition of the vector table. */ +EXTERN (vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define sections. */ +SECTIONS +{ + .text : { + . = ALIGN(0x400); + _text_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + } >rom + + /* C++ Static constructors/destructors, also used for __attribute__ + * ((constructor)) and the likes */ + .preinit_array : { + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + } >rom + .init_array : { + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + } >rom + .fini_array : { + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + } >rom + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >rom + + /* exception index - required due to libgcc.a issuing /0 exceptions */ + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >rom + + . = ALIGN(4); + _etext = .; + _etext_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + _etext_rom = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + + . = ORIGIN(ram_local2); + + .data : { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram_local2 AT >rom + _data_loadaddr = LOADADDR(.data); + + _data_rom = LOADADDR (.data) + ORIGIN(rom); + _edata_rom = _data_rom + SIZEOF (.data); + + .bss : { + _bss = .; + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram_local2 + + /* exception unwind data - required due to libgcc.a issuing /0 exceptions */ + .ARM.extab : { + *(.ARM.extab*) + } >ram_local2 + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + . = ALIGN(4); + end = .; + + /* Leave room above stack for IAP to run. */ + __StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32; + PROVIDE(_stack = __StackTop); +} diff --git a/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_ram_only.ld b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_ram_only.ld new file mode 100644 index 0000000..5bcdea6 --- /dev/null +++ b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_ram_only.ld @@ -0,0 +1,139 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2012 Michael Ossmann <mike@ossmann.com> + * Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> + * Copyright (C) 2012 Jared Boone <jared@sharebrained.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Generic linker script for LPC43XX targets using libopencm3. */ + +/* Memory regions must be defined in the ld script which includes this one. */ + +/* Enforce emmition of the vector table. */ +EXTERN (vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define sections. */ +SECTIONS +{ + . = ORIGIN(ram_local1); + + .text : { + . = ALIGN(0x400); + _text_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + } >ram_local1 + + /* C++ Static constructors/destructors, also used for __attribute__ + * ((constructor)) and the likes */ + .preinit_array : { + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + } >ram_local1 + .init_array : { + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + } >ram_local1 + .fini_array : { + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + } >ram_local1 + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >ram_local1 + + /* exception index - required due to libgcc.a issuing /0 exceptions */ + __exidx_start = .; + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } > ram_local1 + + . = ALIGN(4); + _etext = .; + _etext_ram = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + _etext_rom = 0; /* Start of Code in RAM NULL because Copy of Code from ROM to RAM disabled */ + + . = ORIGIN(ram_local2); + + .data : { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram_local2 + _data_loadaddr = LOADADDR(.data); + + /* Running from RAM only, loading the .elf will initialize data for us. */ + _data_rom = .; + _edata_rom = .; + + _data = .; + _edata = .; + + .bss : { + _bss = .; + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram_local2 + + /* exception unwind data - required due to libgcc.a issuing /0 exceptions */ + .ARM.extab : { + *(.ARM.extab*) + } >ram_local2 + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support - discard it for now. + */ + /DISCARD/ : { *(.ARM.exidx) } + + end = .; + + /* Leave room above stack for IAP to run. */ + __StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32; + PROVIDE(_stack = __StackTop); +} diff --git a/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_rom_to_ram.ld b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_rom_to_ram.ld new file mode 100644 index 0000000..e50040e --- /dev/null +++ b/libopencm3/lib/lpc43xx/m4/libopencm3_lpc43xx_rom_to_ram.ld @@ -0,0 +1,128 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2012 Michael Ossmann <mike@ossmann.com> + * Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com> + * Copyright (C) 2012 Jared Boone <jared@sharebrained.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* Generic linker script for LPC43XX targets using libopencm3. */ + +/* Memory regions must be defined in the ld script which includes this one. */ + +/* Enforce emmition of the vector table. */ +EXTERN (vector_table) + +/* Define the entry point of the output file. */ +ENTRY(reset_handler) + +/* Define sections. */ +SECTIONS +{ + .text : { + . = ALIGN(0x400); + _text_ram = (. - ORIGIN(rom)) + ORIGIN(ram_local1); /* Start of Code in RAM */ + + *(.vectors) /* Vector table */ + *(.text*) /* Program code */ + . = ALIGN(4); + *(.rodata*) /* Read-only data */ + . = ALIGN(4); + } >rom + + /* C++ Static constructors/destructors, also used for __attribute__ + * ((constructor)) and the likes */ + .preinit_array : { + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + } >rom + .init_array : { + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + } >rom + .fini_array : { + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + } >rom + + /* + * Another section used by C++ stuff, appears when using newlib with + * 64bit (long long) printf support + */ + .ARM.extab : { + *(.ARM.extab*) + } >rom + + /* exception index - required due to libgcc.a issuing /0 exceptions */ + .ARM.exidx : { + __exidx_start = .; + *(.ARM.exidx*) + __exidx_end = .; + } >rom + + . = ALIGN(4); + _etext = .; + _etext_ram = (. - ORIGIN(rom)) + ORIGIN(ram_local1); + _etext_rom = (. - ORIGIN(rom)) + ORIGIN(rom_flash); + + . = ORIGIN(ram_local2); + + .data : { + _data = .; + *(.data*) /* Read-write initialized data */ + . = ALIGN(4); + _edata = .; + } >ram_local2 AT >rom + _data_loadaddr = LOADADDR(.data); + + _data_rom = LOADADDR (.data) + ORIGIN(rom_flash); + _edata_rom = _data_rom + SIZEOF (.data); + + .bss : { + _bss = .; + *(.bss*) /* Read-write zero initialized data */ + *(COMMON) + . = ALIGN(4); + _ebss = .; + } >ram_local2 + + /* exception unwind data - required due to libgcc.a issuing /0 exceptions */ + .ARM.extab : { + *(.ARM.extab*) + } >ram_local2 + + /* + * The .eh_frame section appears to be used for C++ exception handling. + * You may need to fix this if you're using C++. + */ + /DISCARD/ : { *(.eh_frame) } + + . = ALIGN(4); + end = .; + + /* Leave room above stack for IAP to run. */ + __StackTop = ORIGIN(ram_local2) + LENGTH(ram_local2) - 32; + PROVIDE(_stack = __StackTop); +} diff --git a/libopencm3/lib/lpc43xx/m4/vector_chipset.c b/libopencm3/lib/lpc43xx/m4/vector_chipset.c new file mode 100644 index 0000000..270e30e --- /dev/null +++ b/libopencm3/lib/lpc43xx/m4/vector_chipset.c @@ -0,0 +1,48 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net> + * Copyright (C) 2012 Michael Ossmann <mike@ossmann.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/cm3/common.h> + +extern unsigned _etext_ram, _text_ram, _etext_rom; + +#define CREG_M4MEMMAP MMIO32((0x40043000U + 0x100)) + +static void pre_main(void) +{ + volatile unsigned *src, *dest; + + /* Copy the code from ROM to Real RAM (if enabled) */ + if ((&_etext_ram-&_text_ram) > 0) { + src = &_etext_rom-(&_etext_ram-&_text_ram); + /* Change Shadow memory to ROM (for Debug Purpose in case Boot + * has not set correctly the M4MEMMAP because of debug) + */ + CREG_M4MEMMAP = (unsigned long)src; + + for (dest = &_text_ram; dest < &_etext_ram; ) { + *dest++ = *src++; + } + + /* Change Shadow memory to Real RAM */ + CREG_M4MEMMAP = (unsigned long)&_text_ram; + + /* Continue Execution in RAM */ + } +} |