[U-Boot] [PATCH v2 07/13] board: Add Microchip PIC32MZ[DA]-Starter-Kit board.

Daniel Schwierzeck daniel.schwierzeck at gmail.com
Tue Jan 5 21:36:33 CET 2016


2016-01-04 15:01 GMT+01:00 Purna Chandra Mandal <purna.mandal at microchip.com>:
> This adds support for Microchip PIC32MZ[DA] Starter Kit board
> based on a PIC32MZ[DA] family of microcontroller.
>
> Signed-off-by: Purna Chandra Mandal <purna.mandal at microchip.com>
>
> ---
>
> Changes in v2:
> - move CONFIG_SYS_TEXT_BASE (from board/<>/config.mk) to include/configs/<board>.h
>
>  arch/mips/dts/Makefile                |   2 +-
>  arch/mips/dts/pic32mzda_sk.dts        |  38 +++++++++++++
>  arch/mips/mach-pic32/Kconfig          |   7 +++
>  board/microchip/pic32mzda/Kconfig     |  13 +++++
>  board/microchip/pic32mzda/MAINTAINERS |   6 ++
>  board/microchip/pic32mzda/Makefile    |   7 +++
>  board/microchip/pic32mzda/README      |  22 ++++++++
>  board/microchip/pic32mzda/pic32mzda.c |  31 +++++++++++
>  configs/pic32mzdask_defconfig         |  21 +++++++
>  include/configs/pic32mzdask.h         | 100 ++++++++++++++++++++++++++++++++++
>  10 files changed, 246 insertions(+), 1 deletion(-)
>  create mode 100644 arch/mips/dts/pic32mzda_sk.dts
>  create mode 100644 board/microchip/pic32mzda/Kconfig
>  create mode 100644 board/microchip/pic32mzda/MAINTAINERS
>  create mode 100644 board/microchip/pic32mzda/Makefile
>  create mode 100644 board/microchip/pic32mzda/README
>  create mode 100644 board/microchip/pic32mzda/pic32mzda.c
>  create mode 100644 configs/pic32mzdask_defconfig
>  create mode 100644 include/configs/pic32mzdask.h
>
> diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
> index 47b6eb5..b513918 100644
> --- a/arch/mips/dts/Makefile
> +++ b/arch/mips/dts/Makefile
> @@ -2,7 +2,7 @@
>  # SPDX-License-Identifier:     GPL-2.0+
>  #
>
> -dtb-y +=
> +dtb-$(CONFIG_TARGET_PIC32MZDASK) += pic32mzda_sk.dtb
>
>  targets += $(dtb-y)
>
> diff --git a/arch/mips/dts/pic32mzda_sk.dts b/arch/mips/dts/pic32mzda_sk.dts
> new file mode 100644
> index 0000000..99e7f64
> --- /dev/null
> +++ b/arch/mips/dts/pic32mzda_sk.dts
> @@ -0,0 +1,38 @@
> +/*
> + * Copyright (C) 2015 Purna Chandra Mandal, purna.mandal at microchip.com
> + *
> + * SPDX-License-Identifier:    GPL-2.0+
> + */
> +
> +/dts-v1/;
> +
> +#include "pic32mzda.dtsi"
> +
> +/ {
> +       model = "Microchip PIC32MZDASK";
> +       compatible = "microchip,pic32mzdask", "microchip,pic32mzda";
> +
> +       aliases {
> +               console = &uart2;
> +               serial0 = &uart2;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +};
> +
> +&clock {
> +       status = "okay";
> +       u-boot,dm-pre-reloc;
> +};
> +
> +&pinctrl {
> +       status = "okay";
> +       u-boot,dm-pre-reloc;
> +};
> +
> +&uart2 {
> +       status = "okay";
> +       u-boot,dm-pre-reloc;
> +};
> diff --git a/arch/mips/mach-pic32/Kconfig b/arch/mips/mach-pic32/Kconfig
> index a394791..f357fc6 100644
> --- a/arch/mips/mach-pic32/Kconfig
> +++ b/arch/mips/mach-pic32/Kconfig
> @@ -26,6 +26,13 @@ endchoice
>  choice
>         prompt "Board select"
>
> +config TARGET_PIC32MZDASK
> +       bool "Microchip PIC32MZ[DA] Starter Kit"
> +       depends on SOC_PIC32MZDA
> +       help
> +         This supports Microchip PIC32MZ[DA] Starter Kit.
> +
>  endchoice
>
> +source "board/microchip/pic32mzda/Kconfig"
>  endmenu
> diff --git a/board/microchip/pic32mzda/Kconfig b/board/microchip/pic32mzda/Kconfig
> new file mode 100644
> index 0000000..8acb393
> --- /dev/null
> +++ b/board/microchip/pic32mzda/Kconfig
> @@ -0,0 +1,13 @@
> +
> +if TARGET_PIC32MZDASK
> +
> +config SYS_BOARD
> +       default "pic32mzda"
> +
> +config SYS_VENDOR
> +       default "microchip"
> +
> +config SYS_CONFIG_NAME
> +       default "pic32mzdask"
> +
> +endif
> diff --git a/board/microchip/pic32mzda/MAINTAINERS b/board/microchip/pic32mzda/MAINTAINERS
> new file mode 100644
> index 0000000..c934f1a
> --- /dev/null
> +++ b/board/microchip/pic32mzda/MAINTAINERS
> @@ -0,0 +1,6 @@
> +PIC32MZDASK BOARD
> +M:     Purna Chandra Mandal <purna.mandal at microchip.com>
> +S:     Maintained
> +F:     board/microchip/pic32mzda/
> +F:     include/configs/pic32mzdask.h
> +F:     configs/pic32mzdask_defconfig
> diff --git a/board/microchip/pic32mzda/Makefile b/board/microchip/pic32mzda/Makefile
> new file mode 100644
> index 0000000..3629530
> --- /dev/null
> +++ b/board/microchip/pic32mzda/Makefile
> @@ -0,0 +1,7 @@
> +#
> +# (C) Copyright 2015
> +# Purna Chandra Mandal, purna.mandal at microchip.com.
> +#
> +# SPDX-License-Identifier:      GPL-2.0+
> +#
> +obj-y := pic32mzda.o
> diff --git a/board/microchip/pic32mzda/README b/board/microchip/pic32mzda/README
> new file mode 100644
> index 0000000..91d16ab
> --- /dev/null
> +++ b/board/microchip/pic32mzda/README
> @@ -0,0 +1,22 @@
> +/*
> + * (c) 2015 Purna Chandra Mandal <purna.mandal at microchip.com>
> + */
> +
> +PIC32MZ[DA] Starter Kit
> +----------------------------------------
> +PIC32MZ[DA] Starter Kit is based on PIC32MZ[DA] family of micro-controller.
> +This family is powered by MIPS M14KEC 32bit general purpose core and has
> +advanced microcontroller features and peripherals.
> +
> +This processor boots with proprietary stage1 bootloader running from internal
> +boot-flash. Stage1 bootloader inturns locates and jumps to U-Boot programmed
> +on internal program-flash. Finally U-Boot loads OS image (along with other
> +required files for booting) from either uSD card, or ethernet, or from USB
> +storage.
> +
> +To boot Linux following three files are mandatory - uEnv.txt (custom U-Boot
> +environment file), uImage, *.dtb (platform device-tree-blob file).
> +
> +U-Boot jumps to Linux using UHI specification.
> +
> +Visit http://microchip.com for details.
> diff --git a/board/microchip/pic32mzda/pic32mzda.c b/board/microchip/pic32mzda/pic32mzda.c
> new file mode 100644
> index 0000000..afe2ab8
> --- /dev/null
> +++ b/board/microchip/pic32mzda/pic32mzda.c
> @@ -0,0 +1,31 @@
> +/*
> + * Microchip PIC32MZ[DA] Starter Kit board
> + *
> + * Copyright (C) 2015, Microchip Technology Inc.
> + * Purna Chandra Mandal <purna.mandal at microchip.com>
> + *
> + * SPDX-License-Identifier:    GPL-2.0+
> + *
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +#include <clk.h>
> +#include <mach/pic32.h>
> +
> +#ifdef CONFIG_DISPLAY_BOARDINFO
> +int checkboard(void)
> +{
> +       ulong rate = 0;
> +       struct udevice *dev;
> +
> +       printf("Core: %s\n", get_core_name());
> +
> +       if (!uclass_get_device(UCLASS_CLK, 0, &dev)) {
> +               rate = clk_get_rate(dev);
> +               printf("CPU Speed: %lu MHz\n", rate / 1000000);
> +       }
> +
> +       return 0;
> +}
> +#endif
> diff --git a/configs/pic32mzdask_defconfig b/configs/pic32mzdask_defconfig
> new file mode 100644
> index 0000000..13760e6
> --- /dev/null
> +++ b/configs/pic32mzdask_defconfig
> @@ -0,0 +1,21 @@
> +CONFIG_MIPS=y
> +CONFIG_MACH_PIC32=y
> +CONFIG_SOC_PIC32MZDA=y
> +CONFIG_TARGET_PIC32MZDASK=y
> +CONFIG_SYS_LITTLE_ENDIAN=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_SYS_HUSH_PARSER=y
> +CONFIG_SYS_PROMPT="dask # "
> +CONFIG_CMD_TIME=y
> +# CONFIG_CMD_IMLS is not set
> +CONFIG_SUPPORT_OF_CONTROL=y
> +CONFIG_OF_EMBED=y
> +CONFIG_DEFAULT_DEVICE_TREE="pic32mzda_sk"
> +CONFIG_DM=y
> +CONFIG_CMD_DM=y
> +CONFIG_DM_SERIAL=y
> +CONFIG_PIC32_SERIAL=y
> +CONFIG_CLK=y
> +CONFIG_PINCTRL=y
> +# CONFIG_PINCTRL_FULL is not set
> +CONFIG_PIC32_PINCTRL=y

this looks written by hand. Please create this file with Kconfig:

make savedefconfig
cp defconfig configs/pic32mzdask_defconfig

> diff --git a/include/configs/pic32mzdask.h b/include/configs/pic32mzdask.h
> new file mode 100644
> index 0000000..3624107
> --- /dev/null
> +++ b/include/configs/pic32mzdask.h
> @@ -0,0 +1,100 @@
> +/*
> + * (c) 2015 Purna Chandra Mandal <purna.mandal at microchip.com>
> + *
> + * SPDX-License-Identifier:    GPL-2.0+
> + *
> + * Microchip PIC32MZ[DA] Starter Kit.
> + */
> +
> +#ifndef __PIC32MZDASK_CONFIG_H
> +#define __PIC32MZDASK_CONFIG_H
> +
> +/* System Configuration */
> +#define CONFIG_SYS_TEXT_BASE           0x9d004000 /* .text */
> +#define CONFIG_DISPLAY_BOARDINFO
> +
> +/*--------------------------------------------
> + * CPU configuration
> + */
> +/* CPU Timer rate */
> +#define CONFIG_SYS_MIPS_TIMER_FREQ     100000000
> +
> +/* Cache Configuration */
> +#define CONFIG_SYS_MIPS_CACHE_MODE     CONF_CM_CACHABLE_NONCOHERENT
> +#undef CONFIG_SKIP_LOWLEVEL_INIT

you do not need to add #undef lines to disable config options. All
options are disabled by default.

> +
> +/*----------------------------------------------------------------------
> + * Memory Layout
> + */
> +#define CONFIG_SYS_SRAM_BASE           0x80000000
> +#define CONFIG_SYS_SRAM_SIZE           0x00080000 /* 512K */
> +
> +/* Initial RAM for temporary stack, global data */
> +#define CONFIG_SYS_INIT_RAM_SIZE       0x10000
> +#define CONFIG_SYS_INIT_RAM_ADDR       \
> +       (CONFIG_SYS_SRAM_BASE + CONFIG_SYS_SRAM_SIZE - CONFIG_SYS_INIT_RAM_SIZE)
> +#define CONFIG_SYS_GBL_DATA_OFFSET     \
> +       (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
> +#define CONFIG_SYS_INIT_SP_OFFSET      CONFIG_SYS_GBL_DATA_OFFSET
> +#define CONFIG_SYS_INIT_SP_ADDR                \
> +       (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)

you do not need to take care of GENERATED_GBL_DATA_SIZE. This is
automatically done in start.S. You only need to set:

#define CONFIG_SYS_INIT_RAM_SIZE       0x10000
#define CONFIG_SYS_INIT_RAM_ADDR       \
       (CONFIG_SYS_SRAM_BASE + CONFIG_SYS_SRAM_SIZE - CONFIG_SYS_INIT_RAM_SIZE)
#define CONFIG_SYS_INIT_SP_ADDR                \
       (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE - 1)

> +
> +/* SDRAM Configuration (for final code, data, stack, heap) */
> +#define CONFIG_SYS_SDRAM_BASE          0x88000000
> +#define CONFIG_SYS_MALLOC_LEN          (256 << 10)
> +#define CONFIG_SYS_BOOTPARAMS_LEN      (4 << 10)
> +#define CONFIG_STACKSIZE               (4 << 10) /* regular stack */
> +
> +#define CONFIG_SYS_MONITOR_BASE                CONFIG_SYS_TEXT_BASE
> +#define CONFIG_SYS_MONITOR_LEN         (192 << 10)
> +
> +#define CONFIG_SYS_LOAD_ADDR           0x88500000 /* default load address */
> +#define CONFIG_SYS_ENV_ADDR            0x88300000
> +
> +/* Memory Test */
> +#define CONFIG_SYS_MEMTEST_START       0x88000000
> +#define CONFIG_SYS_MEMTEST_END         0x88080000
> +
> +/*----------------------------------------------------------------------
> + * Commands
> + */
> +#define CONFIG_SYS_LONGHELP            /* undef to save memory */
> +#define CONFIG_CMD_CLK
> +#define CONFIG_CMD_MEMTEST
> +#define CONFIG_CMD_MEMINFO
> +
> +/*-------------------------------------------------
> + * FLASH configuration
> + */
> +#define CONFIG_SYS_NO_FLASH
> +
> +/*------------------------------------------------------------
> + * Console Configuration
> + */
> +#define CONFIG_BAUDRATE                        115200
> +#define CONFIG_SYS_BAUDRATE_TABLE      {9600, 19200, 38400, 57600, 115200}
> +#define CONFIG_SYS_CBSIZE              1024 /* Console I/O Buffer Size   */
> +#define CONFIG_SYS_MAXARGS             16   /* max number of command args*/
> +#define CONFIG_SYS_PBSIZE              \
> +               (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
> +#define CONFIG_CMDLINE_EDITING         1
> +
> +/*
> + * Handover flattened device tree (dtb file) to Linux kernel
> + */
> +#define CONFIG_OF_LIBFDT       1
> +
> +/* -------------------------------------------------
> + * Environment
> + */
> +#define CONFIG_ENV_IS_NOWHERE  1
> +#define CONFIG_ENV_SIZE                0x4000
> +
> +/* ---------------------------------------------------------------------
> + * Board boot configuration
> + */
> +#define CONFIG_TIMESTAMP       /* Print image info with timestamp */
> +#define CONFIG_BOOTDELAY       5 /* autoboot after X seconds     */
> +#undef CONFIG_BOOTARGS
> +
> +#endif /* __PIC32MZDASK_CONFIG_H */
> --
> 1.8.3.1
>
>



-- 
- Daniel


More information about the U-Boot mailing list