【zephyr】 - 添加 external xip flash boot header

目錄

 

1.修改內容 總目錄

1.1 \soc\arm\nxp_imx\rt\soc.c 

1.2 添加 Kconfig

1.3 添加定義 sections

1.4 添加sections_tags.h  

1.4 Linker.ld 

1.5.1文件列表關係

2. 驗證結果

2.1map

---

1.修改內容 總目錄

1.1 \soc\arm\nxp_imx\rt\soc.c 

#ifdef CONFIG_NXP_IMX_RT_BOOT_HEADER
const __imx_boot_data_section BOOT_DATA_T boot_data = {
	.start = CONFIG_FLASH_BASE_ADDRESS,
	.size = CONFIG_FLASH_SIZE,
	.plugin = PLUGIN_FLAG,
	.placeholder = 0xFFFFFFFF,
};

const __imx_boot_ivt_section ivt image_vector_table = {
	.hdr = IVT_HEADER,
	.entry = CONFIG_FLASH_BASE_ADDRESS + CONFIG_TEXT_SECTION_OFFSET,
	.reserved1 = IVT_RSVD,
#ifdef CONFIG_DEVICE_CONFIGURATION_DATA
	.dcd = (uint32_t) dcd_data,
#else
	.dcd = (uint32_t) NULL,
#endif
	.boot_data = (uint32_t) &boot_data,
	.self = (uint32_t) &image_vector_table,
	.csf = (uint32_t)CSF_ADDRESS,
	.reserved2 = IVT_RSVD,
};
#endif

1.2 添加 Kconfig

menuconfig NXP_IMX_RT_BOOT_HEADER
	bool "Enable the boot header"
	help
	  Enable data structures required by the boot ROM to boot the
	  application from an external flash device.

if NXP_IMX_RT_BOOT_HEADER

choice BOOT_DEVICE
	prompt "Boot device selection"
	default BOOT_FLEXSPI_NOR

config BOOT_FLEXSPI_NOR
	bool "FlexSPI serial NOR"

endchoice

config IMAGE_VECTOR_TABLE_OFFSET
	hex "Image vector table offset"
	default 0x1000 if BOOT_FLEXSPI_NOR || BOOT_SEMC_NOR
	help
	  The Image Vector Table (IVT) provides the boot ROM with pointers to
	  the application entry point and device configuration data. The boot
	  ROM requires a fixed IVT offset for each type of boot device.

config DEVICE_CONFIGURATION_DATA
	bool "Enable device configuration data"
	help
	  Device configuration data (DCD) provides a sequence of commands to
	  the boot ROM to initialize components such as an SDRAM.

endif # NXP_IMX_RT_BOOT_HEADER

 

1.3 添加定義 sections

/* Architecture-specific sections */
#if defined(CONFIG_ARM)
#define KINETIS_FLASH_CONFIG  kinetis_flash_config
#define TI_CCFG	.ti_ccfg

#define _CCM_DATA_SECTION_NAME		.ccm_data
#define _CCM_BSS_SECTION_NAME		.ccm_bss
#define _CCM_NOINIT_SECTION_NAME	.ccm_noinit
#endif

#define IMX_BOOT_CONF	.boot_hdr.conf
#define IMX_BOOT_DATA	.boot_hdr.data
#define IMX_BOOT_IVT	.boot_hdr.ivt
#define IMX_BOOT_DCD	.boot_hdr.dcd_data

1.4 添加sections_tags.h  

//E:\work\code\zephyr_20190406\include\linker\section_tags.h
#if defined(CONFIG_ARM)
#define __kinetis_flash_config_section __in_section_unique(KINETIS_FLASH_CONFIG)
#define __ti_ccfg_section Z_GENERIC_SECTION(TI_CCFG)
#define __ccm_data_section Z_GENERIC_SECTION(_CCM_DATA_SECTION_NAME)
#define __ccm_bss_section Z_GENERIC_SECTION(_CCM_BSS_SECTION_NAME)
#define __ccm_noinit_section Z_GENERIC_SECTION(_CCM_NOINIT_SECTION_NAME)
#define __imx_boot_conf_section	Z_GENERIC_SECTION(IMX_BOOT_CONF)  //新增
#define __imx_boot_data_section	Z_GENERIC_SECTION(IMX_BOOT_DATA)
#define __imx_boot_ivt_section	Z_GENERIC_SECTION(IMX_BOOT_IVT)
#define __imx_boot_dcd_section	Z_GENERIC_SECTION(IMX_BOOT_DCD)
#endif /* CONFIG_ARM */

1.4 Linker.ld 

    GROUP_START(ROMABLE_REGION)

	_image_rom_start = ROM_ADDR;

    SECTION_PROLOGUE(_TEXT_SECTION_NAME,,)
	{
#ifdef CONFIG_CC3220SF_DEBUG
	/* Add CC3220SF flash header to disable flash verification */
	. = 0x0;
	KEEP(*(.dbghdr))
	KEEP(*(".dbghdr.*"))
#endif

#ifdef CONFIG_NXP_IMX_RT_BOOT_HEADER
	KEEP(*(.boot_hdr.conf))                 //偏移地址0x0000
	. = CONFIG_IMAGE_VECTOR_TABLE_OFFSET;   //偏移地址0x1000
	KEEP(*(.boot_hdr.ivt))
	KEEP(*(.boot_hdr.data))
#ifdef CONFIG_DEVICE_CONFIGURATION_DATA
	KEEP(*(.boot_hdr.dcd_data))   
#endif
#endif

	. = CONFIG_TEXT_SECTION_OFFSET;    //偏移地址0x2000

 1.5 CMakefiles

E:\work\code\zephyr_20190406\ext\hal\nxp\mcux\boards\evkbimxrt1050\CMakeLists.txt

#
# Copyright (c) 2018, NXP
#
# SPDX-License-Identifier: Apache-2.0
#

zephyr_compile_definitions_ifdef(CONFIG_NXP_IMX_RT_BOOT_HEADER XIP_BOOT_HEADER_ENABLE=1)
zephyr_compile_definitions_ifdef(CONFIG_DEVICE_CONFIGURATION_DATA XIP_BOOT_HEADER_DCD_ENABLE=1)

zephyr_sources_ifdef(CONFIG_BOOT_FLEXSPI_NOR evkbimxrt1050_flexspi_nor_config.c)
zephyr_sources_ifdef(CONFIG_DEVICE_CONFIGURATION_DATA evkbimxrt1050_sdram_ini_dcd.c)

1.5.1文件列表關係

$ ls -l ./ext/hal/nxp/mcux/boards/evkbimxrt1050/
total 37
-rw-r--r-- 1 xiao 197121   423 4月   6 11:11 CMakeLists.txt
-rw-r--r-- 1 xiao 197121  2130 4月   6 11:11 evkbimxrt1050_flexspi_nor_config.c
-rw-r--r-- 1 xiao 197121 12701 4月   6 11:11 evkbimxrt1050_flexspi_nor_config.h
-rw-r--r-- 1 xiao 197121 12276 4月   6 11:11 evkbimxrt1050_sdram_ini_dcd.c
-rw-r--r-- 1 xiao 197121   607 4月   6 11:11 evkbimxrt1050_sdram_ini_dcd.h

2. 驗證結果

2.1 map

                0x60000000                _image_rom_start = 0x60000000

text            0x60000000     0x22c0
 *(SORT(.boot_hdr.conf))
 .boot_hdr.conf
                0x60000000      0x200 zephyr/libzephyr.a(evkbimxrt1050_flexspi_nor_config.c.obj)
                0x60000000                hyperflash_config
                0x00001000                . = 0x1000
 *fill*         0x60000200      0xe00 
 *(SORT(.boot_hdr.ivt))
 .boot_hdr.ivt  0x60001000       0x20 zephyr/libzephyr.a(soc.c.obj)
                0x60001000                image_vector_table
 *(SORT(.boot_hdr.data))
 .boot_hdr.data
                0x60001020       0x10 zephyr/libzephyr.a(soc.c.obj)
                0x60001020                boot_data
 *(SORT(.boot_hdr.dcd_data))
 .boot_hdr.dcd_data
                0x60001030      0x430 zephyr/libzephyr.a(evkbimxrt1050_sdram_ini_dcd.c.obj)
                0x60001030                dcd_data
                0x00002000                . = 0x2000
 *fill*         0x60001460      0xba0 
                0x60002000                _vector_start = .
 *(SORT(.exc_vector_table))
 *(SORT(.exc_vector_table.*))