nuttx/arch/arm/src/lpc54xx/lpc54_start.c

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This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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/****************************************************************************
* arch/arm/src/lpc54xx/lpc54_start.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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*
* http://www.apache.org/licenses/LICENSE-2.0
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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*
* 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.
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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#include <nuttx/config.h>
#include <stdint.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/init.h>
#include <arch/board/board.h>
#include <arch/irq.h>
#include "arm_arch.h"
#include "arm_internal.h"
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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#include "nvic.h"
#include "hardware/lpc54_syscon.h"
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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#include "lpc54_clockconfig.h"
#include "lpc54_userspace.h"
#include "lpc54_lowputc.h"
#include "lpc54_serial.h"
#include "lpc54_start.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Name: showprogress
*
* Description:
* Print a character on the UART to show boot status.
*
****************************************************************************/
#ifdef CONFIG_DEBUG_FEATURES
# define showprogress(c) arm_lowputc(c)
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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#else
# define showprogress(c)
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/* This describes the initial PLL configuration */
static const struct pll_setup_s g_initial_pll_setup =
{
.pllclksel = BOARD_PLL_CLKSEL,
.pllctrl = SYSCON_SYSPLLCTRL_SELR(BOARD_PLL_SELR) |
SYSCON_SYSPLLCTRL_SELI(BOARD_PLL_SELI) |
SYSCON_SYSPLLCTRL_SELP(BOARD_PLL_SELP),
.pllmdec = (SYSCON_SYSPLLMDEC_MDEC(BOARD_PLL_MDEC)),
.pllndec = (SYSCON_SYSPLLNDEC_NDEC(BOARD_PLL_NDEC)),
.pllpdec = (SYSCON_SYSPLLPDEC_PDEC(BOARD_PLL_PDEC)),
.pllfout = BOARD_PLL_FOUT,
.pllflags = PLL_SETUPFLAG_WAITLOCK | PLL_SETUPFLAG_POWERUP,
.ahbdiv = SYSCON_AHBCLKDIV_DIV(BOARD_AHBCLKDIV)
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: lpc54_fpuconfig
*
* Description:
* Configure the FPU. Relative bit settings:
*
* CPACR: Enables access to CP10 and CP11
* CONTROL.FPCA: Determines whether the FP extension is active in the
* current context:
* FPCCR.ASPEN: Enables automatic FP state preservation, then the
* processor sets this bit to 1 on successful completion of any FP
* instruction.
* FPCCR.LSPEN: Enables lazy context save of FP state. When this is
* done, the processor reserves space on the stack for the FP state,
* but does not save that state information to the stack.
*
* Software must not change the value of the ASPEN bit or LSPEN bit while
* either:
* - the CPACR permits access to CP10 and CP11, that give access to the FP
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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* extension, or
* - the CONTROL.FPCA bit is set to 1
*
****************************************************************************/
#ifdef CONFIG_ARCH_FPU
#ifndef CONFIG_ARMV7M_LAZYFPU
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
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static inline void lpc54_fpuconfig(void)
{
uint32_t regval;
/* Set CONTROL.FPCA so that we always get the extended context frame
* with the volatile FP registers stacked above the basic context.
*/
regval = getcontrol();
regval |= CONTROL_FPCA;
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
2017-12-07 20:30:02 +01:00
setcontrol(regval);
/* Ensure that FPCCR.LSPEN is disabled, so that we don't have to contend
* with the lazy FP context save behaviour. Clear FPCCR.ASPEN since we
* are going to turn on CONTROL.FPCA for all contexts.
*/
regval = getreg32(NVIC_FPCCR);
regval &= ~((1 << 31) | (1 << 30));
putreg32(regval, NVIC_FPCCR);
/* Enable full access to CP10 and CP11 */
regval = getreg32(NVIC_CPACR);
regval |= NVIC_CPACR_CP_FULL(10) | NVIC_CPACR_CP_FULL(11);
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
2017-12-07 20:30:02 +01:00
putreg32(regval, NVIC_CPACR);
}
#else
static inline void lpc54_fpuconfig(void)
{
uint32_t regval;
/* Clear CONTROL.FPCA so that we do not get the extended context frame
* with the volatile FP registers stacked in the saved context.
*/
regval = getcontrol();
regval &= ~CONTROL_FPCA;
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
2017-12-07 20:30:02 +01:00
setcontrol(regval);
/* Ensure that FPCCR.LSPEN is disabled, so that we don't have to contend
* with the lazy FP context save behaviour. Clear FPCCR.ASPEN since we
* are going to keep CONTROL.FPCA off for all contexts.
*/
regval = getreg32(NVIC_FPCCR);
regval &= ~((1 << 31) | (1 << 30));
putreg32(regval, NVIC_FPCCR);
/* Enable full access to CP10 and CP11 */
regval = getreg32(NVIC_CPACR);
regval |= NVIC_CPACR_CP_FULL(10) | NVIC_CPACR_CP_FULL(11);
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
2017-12-07 20:30:02 +01:00
putreg32(regval, NVIC_CPACR);
}
#endif
#else
# define lpc54_fpuconfig()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: _start
*
* Description:
* This is the reset entry point.
*
****************************************************************************/
void __start(void)
{
const uint32_t *src;
uint32_t *dest;
uint32_t regval;
/* Make sure that interrupts are disabled */
__asm__ __volatile__ ("\tcpsid i\n");
/* Enable the SRAM clock to make the stack usable */
regval = (SYSCON_AHBCLKCTRL0_SRAM1 | SYSCON_AHBCLKCTRL0_SRAM2 |
SYSCON_AHBCLKCTRL0_SRAM3);
putreg32(regval, LPC54_SYSCON_AHBCLKCTRLSET0);
/* Configure the clocking and the console uart so that we can get debug
* output as soon as possible. NOTE: That this logic must not assume that
* .bss or .data have beeninitialized.
*/
lpc54_clockconfig(&g_initial_pll_setup);
lpc54_lowsetup();
showprogress('A');
/* Clear .bss. We'll do this inline (vs. calling memset) just to be
* certain that there are no issues with the state of global variables.
*/
for (dest = &_sbss; dest < &_ebss; )
{
*dest++ = 0;
}
showprogress('B');
/* Move the initialized data section from his temporary holding spot in
* FLASH into the correct place in SRAM. The correct place in SRAM is
* give by _sdata and _edata. The temporary location is in FLASH at the
* end of all of the other read-only data (.text, .rodata) at _eronly.
*/
for (src = &_eronly, dest = &_sdata; dest < &_edata; )
{
*dest++ = *src++;
}
showprogress('C');
/* Initialize the FPU (if configured) */
lpc54_fpuconfig();
showprogress('D');
/* Perform early serial initialization */
#ifdef USE_EARLYSERIALINIT
lpc54_earlyserialinit();
#endif
showprogress('E');
/* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segments.
*/
#ifdef CONFIG_BUILD_PROTECTED
lpc54_userspace();
showprogress('F');
#endif
/* Initialize onboard resources */
lpc54_board_initialize();
showprogress('G');
/* Then start NuttX */
showprogress('\r');
showprogress('\n');
nx_start();
This adds basic architectural support for the LPC546xx family and includes support for the LPCXpresso-LPC54628 board. The basic NSH port is almost complete... still lacking GPIO support and LED support. There are still no significant drivers available. Squashed commit of the following: arch/arm/src/lpc54xx: Finish off some missing logic. Complete now execpt for GPIO and LED support. arch/arm/src/lpc54xx: Add lpc54_clrpend.c arch/arm/src/lpc54xx: Serial driver is complete and compiles. arch/arm/src/lpc54xx: Add beginning of a serial driver (still missing some logic) arch/arm/src/lpc54xx: Fleshes out low level USART intialization. arch/arm/src/lpc546xx/Kconfig: Add hooks to integrate with common seril upper half. arch/arm/src/lpc54xx: Beginning of USART console support. arch/arm/src/lpc54xx: Completes very basic clock configuration. arch/arm/src/lpc54xx: Add clocking logic (still not complete) arch/arm/src/lpc54xx: Beginning of PLL configuration logic. arch/arm/src/lpc54xx: Fix a few things from first compile attempt. Compilation cannot work until I at least finish the clock configuration logic. arch/arm/src/lpc54xx: Addes some SysTick logic. arch/arm/src/lpc54xx: Completes basic startup logic (sans clock configuration) and interrupt configuration. arch/arm/src/lpc54xx: Add generic ARMv7-M start-up logic (needs LPC54628 customizations); add emtpy file that will eventually hold the clock configuration logic. arch/arm/src/lpc54xx: Add (incomplete) SYSCON register definition header file. arch/arm/src/lpc54xx: Add FLEXCOMM header file. arch/arm/src/lpc54xx: Bring in tickless clock logic from LPC43; configs/lpcxpresso-lpc54628: mount procfs if enabled. arch/arm/src/lpc54xx: Add RIT clock definitions; add SysTick initialization (not finished) LPC54xx and LPCXpresso-LPC54628: add more boilerplate files and stubbed out files. arch/arm/src/lpc54xx: Add (incomplete) USART header file. Add another condition to a Kconfig; refresh a defconfig. arch/arm/src/lpc54xx/chip: Add LPC54628 memory map header files. configs/lpcxpresso-lpc54628: Add basic build files for the LPCXpresso-LPC54628 arch/: Basic build directory structure for the LPC54628
2017-12-07 20:30:02 +01:00
/* Shouldn't get here */
for (; ; );
}