This patch adds support for "imximage" (MX Boot Image) to the mkimage utility. The imximage is used on the Freescales's MX.25, MX.35 and MX.51 processors. Further details under doc/README.imximage. This patch was tested on a Freescale mx51evk board. Signed-off-by: Stefano Babic <sbabic@denx.de>master
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--------------------------------------------- |
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Imximage Boot Image generation using mkimage |
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--------------------------------------------- |
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This document describes how to set up a U-Boot image |
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that can be booted by Freescale MX25, MX35 and MX51 |
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processors via internal boot mode. |
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These processors can boot directly from NAND, SPI flash and SD card flash |
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using its internal boot ROM support. They can boot from an internal |
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UART, if booting from device media fails. |
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Booting from NOR flash does not require to use this image type. |
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For more details refer Chapter 2 - System Boot and section 2.14 |
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(flash header description) of the processor's manual. |
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This implementation does not use at the moment the secure boot feature |
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of the processor. The image is generated disabling all security fields. |
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Command syntax: |
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-------------- |
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./tools/mkimage -l <mx u-boot_file> |
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to list the imx image file details |
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./tools/mkimage -T imximage \ |
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-n <board specific configuration file> \ |
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-e <execution address> -d <u-boot binary> <output image file> |
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For example, for the mx51evk board: |
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./tools/mkimage -n ./board/freescale/mx51evk/imximage.cfg \ |
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-T imximage -e 0x97800000 \ |
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-d u-boot.bin u-boot.imx |
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You can generate directly the image when you compile u-boot with: |
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$ make u-boot.imx |
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The output image can be flashed on the board SPI flash or on a SD card. |
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In both cases, you have to copy the image at the offset required for the |
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chosen media devices (0x400 for both SPI flash or SD card). |
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Please check Freescale documentation for further details. |
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Board specific configuration file specifications: |
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------------------------------------------------- |
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1. This file must present in the $(BOARDDIR) and the name should be |
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imximage.cfg (since this is used in Makefile). |
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2. This file can have empty lines and lines starting with "#" as first |
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character to put comments. |
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3. This file can have configuration command lines as mentioned below, |
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any other information in this file is treated as invalid. |
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Configuration command line syntax: |
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--------------------------------- |
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1. Each command line is must have two strings, first one command or address |
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and second one data string |
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2. Following are the valid command strings and associated data strings:- |
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Command string data string |
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-------------- ----------- |
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BOOT_FROM nand/spi/sd/onenand |
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Example: |
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BOOT_FROM spi |
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DATA type address value |
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type: word=4, halfword=2, byte=1 |
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address: physycal register address |
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value: value to be set in register |
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All values are in in hexadecimal. |
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Example (write to IOMUXC): |
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DATA 4 0x73FA88a0 0x200 |
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The processor support up to 60 register programming commands. An error |
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is generated if more commands are found in the configuration file. |
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3. All commands are optional to program. |
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Setup a SD Card for booting |
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-------------------------------- |
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The following example prepare a SD card with u-boot and a FAT partition |
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to be used to stored the kernel to be booted. |
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I will set the SD in the most compatible mode, setting it with |
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255 heads and 63 sectors, as suggested from several documentation and |
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howto on line (I took as reference the preparation of a SD Card for the |
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Beagleboard, running u-boot as bootloader). |
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You should start clearing the partitions table on the SD card. Because |
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the u-boot image must be stored at the offset 0x400, it must be assured |
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that there is no partition at that address. A new SD card is already |
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formatted with FAT filesystem and the partition starts from the first |
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cylinder, so we need to change it. |
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You can do all steps with fdisk. If the device for the SD card is |
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/dev/mmcblk0, the following commands make the job: |
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1. Start the fdisk utility (as superuser) |
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fdisk /dev/mmcblk0 |
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2. Clear the actual partition |
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Command (m for help): o |
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3. Print card info: |
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Command (m for help): p |
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Disk /dev/mmcblk0: 1981 MB, 1981284352 bytes |
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In my case, I have a 2 GB card. I need the size to set later the correct value |
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for the cylinders. |
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4. Go to expert mode: |
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Command (m for help): x |
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5. Set card geometry |
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Expert command (m for help): h |
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Number of heads (1-256, default 4): 255 |
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Expert command (m for help): s |
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Number of sectors (1-63, default 16): 63 |
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Warning: setting sector offset for DOS compatiblity |
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We have set 255 heads, 63 sector. We have to set the cylinder. |
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The value to be set can be calculated with: |
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cilynder = <total size> / <heads> / <sectors> / <blocksize> |
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in this example, |
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1981284352 / 255 / 63 / 512 = 239.x = 239 |
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Expert command (m for help): c |
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Number of cylinders (1-1048576, default 60032): 239 |
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6. Leave the expert mode |
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Expert command (m for help): r |
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7. Set up a partition |
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Now set a partition table to store the kernel or whatever you want. Of course, |
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you can set additional partitions to store rootfs, data, etc. |
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In my example I want to set a single partition. I must take care |
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to not overwrite the space where I will put u-boot. |
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Command (m for help): n |
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Command action |
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e extended |
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p primary partition (1-4) |
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p |
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Partition number (1-4): 1 |
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First cylinder (1-239, default 1): 3 |
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Last cylinder, +cylinders or +size{K,M,G} (3-239, default 239): +100M |
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Command (m for help): p |
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Disk /dev/mmcblk0: 1967 MB, 1967128576 bytes |
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255 heads, 63 sectors/track, 239 cylinders |
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Units = cylinders of 16065 * 512 = 8225280 bytes |
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Disk identifier: 0xb712a870 |
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Device Boot Start End Blocks Id System |
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/dev/mmcblk0p1 3 16 112455 83 Linux |
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I have set 100MB, leaving the first 2 sectors free. I will copy u-boot |
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there. |
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8. Write the partition table and exit. |
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Command (m for help): w |
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The partition table has been altered! |
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Calling ioctl() to re-read partition table. |
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9. Copy u-boot.imx on the SD card |
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I use dd: |
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dd if=u-boot.imx of=/dev/mmcblk0 bs=512 seek=2 |
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This command copies the u-boot image at the address 0x400, as required |
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by the processor. |
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Now remove your card from the PC and go to the target. If evrything went right, |
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the u-boot prompt should come after power on. |
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------------------------------------------------ |
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Author: Stefano babic <sbabic@denx.de> |
@ -0,0 +1,324 @@ |
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/*
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* (C) Copyright 2009 |
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* Stefano Babic, DENX Software Engineering, sbabic@denx.de. |
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* |
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* (C) Copyright 2008 |
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* Marvell Semiconductor <www.marvell.com> |
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* Written-by: Prafulla Wadaskar <prafulla@marvell.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include "mkimage.h" |
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#include <image.h> |
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#include "imximage.h" |
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/*
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* Supported commands for configuration file |
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*/ |
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static table_entry_t imximage_cmds[] = { |
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{CMD_BOOT_FROM, "BOOT_FROM", "boot comand", }, |
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{CMD_DATA, "DATA", "Reg Write Data", }, |
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{-1, "", "", }, |
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}; |
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/*
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* Supported Boot options for configuration file |
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* this is needed to set the correct flash offset |
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*/ |
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static table_entry_t imximage_bootops[] = { |
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{FLASH_OFFSET_SPI, "spi", "SPI Flash", }, |
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{FLASH_OFFSET_NAND, "nand", "NAND Flash", }, |
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{FLASH_OFFSET_SD, "sd", "SD Card", }, |
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{FLASH_OFFSET_ONENAND, "onenand", "OneNAND Flash",}, |
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{-1, "", "Invalid", }, |
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}; |
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static struct imx_header imximage_header; |
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static uint32_t get_cfg_value(char *token, char *name, int linenr) |
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{ |
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char *endptr; |
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uint32_t value; |
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errno = 0; |
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value = strtoul(token, &endptr, 16); |
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if (errno || (token == endptr)) { |
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fprintf(stderr, "Error: %s[%d] - Invalid hex data(%s)\n", |
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name, linenr, token); |
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exit(EXIT_FAILURE); |
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} |
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return value; |
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} |
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static int imximage_check_image_types(uint8_t type) |
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{ |
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if (type == IH_TYPE_IMXIMAGE) |
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return EXIT_SUCCESS; |
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else |
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return EXIT_FAILURE; |
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} |
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static int imximage_verify_header(unsigned char *ptr, int image_size, |
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struct mkimage_params *params) |
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{ |
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struct imx_header *imx_hdr = (struct imx_header *) ptr; |
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flash_header_t *hdr = &imx_hdr->fhdr; |
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/* Only a few checks can be done: search for magic numbers */ |
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if (hdr->app_code_barker != APP_CODE_BARKER) |
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return -FDT_ERR_BADSTRUCTURE; |
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if (imx_hdr->dcd_table.preamble.barker != DCD_BARKER) |
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return -FDT_ERR_BADSTRUCTURE; |
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return 0; |
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} |
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static void imximage_print_header(const void *ptr) |
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{ |
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struct imx_header *imx_hdr = (struct imx_header *) ptr; |
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flash_header_t *hdr = &imx_hdr->fhdr; |
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uint32_t size; |
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flash_cfg_parms_t *ext_header; |
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size = imx_hdr->dcd_table.preamble.length; |
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if (size > (MAX_HW_CFG_SIZE * sizeof(dcd_type_addr_data_t))) { |
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fprintf(stderr, |
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"Error: Image corrupt DCD size %d exceed maximum %d\n", |
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size / sizeof(dcd_type_addr_data_t), MAX_HW_CFG_SIZE); |
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exit(EXIT_FAILURE); |
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} |
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ext_header = (flash_cfg_parms_t *) ((uint32_t)&imx_hdr->dcd_table + |
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sizeof(dcd_preamble_t) + size); |
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printf("Image Type: Freescale IMX Boot Image\n"); |
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printf("Data Size: "); |
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genimg_print_size(ext_header->length); |
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printf("Load Address: %08x\n", (unsigned int)hdr->app_dest_ptr); |
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printf("Entry Point: %08x\n", (unsigned int)hdr->app_code_jump_vector); |
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} |
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static uint32_t imximage_parse_cfg_file(struct imx_header *imxhdr, char *name) |
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{ |
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FILE *fd = NULL; |
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char *line = NULL; |
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char *token, *saveptr1, *saveptr2; |
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int lineno = 0; |
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int fld, value; |
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uint32_t len; |
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int dcd_len = 0; |
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dcd_t *dcd = &imxhdr->dcd_table; |
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int32_t cmd; |
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fd = fopen(name, "r"); |
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if (fd == 0) { |
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fprintf(stderr, "Error: %s - Can't open DCD file\n", name); |
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exit(EXIT_FAILURE); |
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} |
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/* Very simple parsing, line starting with # are comments
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* and are dropped |
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*/ |
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while ((getline(&line, &len, fd)) > 0) { |
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lineno++; |
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token = strtok_r(line, "\r\n", &saveptr1); |
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if (token == NULL) |
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continue; |
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/* Check inside the single line */ |
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for (fld = CFG_COMMAND, cmd = CMD_INVALID, |
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line = token; ; line = NULL, fld++) { |
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token = strtok_r(line, " \t", &saveptr2); |
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if (token == NULL) |
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break; |
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/* Drop all text starting with '#' as comments */ |
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if (token[0] == '#') |
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break; |
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/* parse all fields in a single line */ |
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switch (fld) { |
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case CFG_COMMAND: |
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cmd = get_table_entry_id(imximage_cmds, |
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"imximage commands", token); |
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if (cmd < 0) { |
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fprintf(stderr, |
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"Error: %s[%d] - " |
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"Invalid command (%s)\n", |
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name, lineno, token); |
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exit(EXIT_FAILURE); |
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} |
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break; |
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case CFG_REG_SIZE: |
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switch (cmd) { |
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case CMD_BOOT_FROM: |
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/* Get flash header offset */ |
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imxhdr->flash_offset = |
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get_table_entry_id( |
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imximage_bootops, |
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"imximage boot option", |
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token); |
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if (imxhdr->flash_offset == -1) { |
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fprintf(stderr, |
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"Error: %s[%d] -" |
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"Invalid boot device" |
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"(%s)\n", |
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name, lineno, token); |
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exit(EXIT_FAILURE); |
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} |
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break; |
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case CMD_DATA: |
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value = get_cfg_value(token, |
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name, lineno); |
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/* Byte, halfword, word */ |
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if ((value != 1) && |
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(value != 2) && (value != 4)) { |
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fprintf(stderr, |
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"Error: %s[%d] - " |
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"Invalid register size " |
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"(%d)\n", |
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name, lineno, value); |
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exit(EXIT_FAILURE); |
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} |
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dcd->addr_data[dcd_len].type = value; |
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break; |
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} |
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case CFG_REG_ADDRESS: |
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if (cmd == CMD_DATA) |
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dcd->addr_data[dcd_len].addr = |
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get_cfg_value(token, |
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name, lineno); |
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break; |
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case CFG_REG_VALUE: |
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if (cmd == CMD_DATA) { |
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dcd->addr_data[dcd_len].value = |
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get_cfg_value(token, |
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name, lineno); |
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dcd_len++; |
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} |
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break; |
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} |
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} |
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if (dcd_len > MAX_HW_CFG_SIZE) { |
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fprintf(stderr, |
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"Error: %s[%d] -" |
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"DCD table exceeds maximum size(%d)\n", |
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name, lineno, MAX_HW_CFG_SIZE); |
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} |
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} |
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dcd->preamble.barker = DCD_BARKER; |
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dcd->preamble.length = dcd_len * sizeof(dcd_type_addr_data_t); |
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fclose(fd); |
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return dcd->preamble.length; |
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} |
||||||
|
|
||||||
|
static void imximage_set_header(void *ptr, struct stat *sbuf, int ifd, |
||||||
|
struct mkimage_params *params) |
||||||
|
{ |
||||||
|
struct imx_header *hdr = (struct imx_header *)ptr; |
||||||
|
flash_header_t *fhdr = &hdr->fhdr; |
||||||
|
int dcd_len; |
||||||
|
flash_cfg_parms_t *ext_header; |
||||||
|
uint32_t base_offset; |
||||||
|
|
||||||
|
/* Set default offset */ |
||||||
|
hdr->flash_offset = FLASH_OFFSET_STANDARD; |
||||||
|
|
||||||
|
/* Set magic number */ |
||||||
|
fhdr->app_code_barker = APP_CODE_BARKER; |
||||||
|
|
||||||
|
/* Parse dcd configuration file */ |
||||||
|
dcd_len = imximage_parse_cfg_file(hdr, params->imagename); |
||||||
|
|
||||||
|
fhdr->app_dest_ptr = params->addr; |
||||||
|
fhdr->app_dest_ptr = params->ep - hdr->flash_offset - |
||||||
|
sizeof(struct imx_header); |
||||||
|
fhdr->app_code_jump_vector = params->ep; |
||||||
|
|
||||||
|
base_offset = fhdr->app_dest_ptr + hdr->flash_offset ; |
||||||
|
fhdr->dcd_ptr_ptr = (uint32_t) ((uint32_t)&fhdr->dcd_ptr - |
||||||
|
(uint32_t)&fhdr->app_code_jump_vector) + base_offset ; |
||||||
|
|
||||||
|
fhdr->dcd_ptr = base_offset + |
||||||
|
((uint32_t)&hdr->dcd_table - |
||||||
|
(uint32_t)&hdr->fhdr); |
||||||
|
|
||||||
|
/* The external flash header must be at the end of the DCD table */ |
||||||
|
ext_header = (flash_cfg_parms_t *) ((uint32_t)&hdr->dcd_table + |
||||||
|
dcd_len + |
||||||
|
sizeof(dcd_preamble_t)); |
||||||
|
ext_header->length = sbuf->st_size + |
||||||
|
hdr->flash_offset + |
||||||
|
sizeof(struct imx_header); |
||||||
|
|
||||||
|
/* Security feature are not supported */ |
||||||
|
fhdr->app_code_csf = 0; |
||||||
|
fhdr->super_root_key = NULL; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
int imximage_check_params(struct mkimage_params *params) |
||||||
|
{ |
||||||
|
if (!params) |
||||||
|
return CFG_INVALID; |
||||||
|
if (!strlen(params->imagename)) { |
||||||
|
fprintf(stderr, "Error: %s - Configuration file not specified, " |
||||||
|
"it is needed for imximage generation\n", |
||||||
|
params->cmdname); |
||||||
|
return CFG_INVALID; |
||||||
|
} |
||||||
|
/*
|
||||||
|
* Check parameters: |
||||||
|
* XIP is not allowed and verify that incompatible |
||||||
|
* parameters are not sent at the same time |
||||||
|
* For example, if list is required a data image must not be provided |
||||||
|
*/ |
||||||
|
return (params->dflag && (params->fflag || params->lflag)) || |
||||||
|
(params->fflag && (params->dflag || params->lflag)) || |
||||||
|
(params->lflag && (params->dflag || params->fflag)) || |
||||||
|
(params->xflag) || !(strlen(params->imagename)); |
||||||
|
} |
||||||
|
|
||||||
|
/*
|
||||||
|
* imximage parameters |
||||||
|
*/ |
||||||
|
static struct image_type_params imximage_params = { |
||||||
|
.name = "Freescale i.MX 51 Boot Image support", |
||||||
|
.header_size = sizeof(struct imx_header), |
||||||
|
.hdr = (void *)&imximage_header, |
||||||
|
.check_image_type = imximage_check_image_types, |
||||||
|
.verify_header = imximage_verify_header, |
||||||
|
.print_header = imximage_print_header, |
||||||
|
.set_header = imximage_set_header, |
||||||
|
.check_params = imximage_check_params, |
||||||
|
}; |
||||||
|
|
||||||
|
void init_imx_image_type(void) |
||||||
|
{ |
||||||
|
mkimage_register(&imximage_params); |
||||||
|
} |
@ -0,0 +1,105 @@ |
|||||||
|
/*
|
||||||
|
* (C) Copyright 2009 |
||||||
|
* Stefano Babic, DENX Software Engineering, sbabic@denx.de. |
||||||
|
* |
||||||
|
* See file CREDITS for list of people who contributed to this |
||||||
|
* project. |
||||||
|
* |
||||||
|
* 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 2 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, write to the Free Software |
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
||||||
|
* MA 02111-1307 USA |
||||||
|
*/ |
||||||
|
|
||||||
|
#ifndef _IMXIMAGE_H_ |
||||||
|
#define _IMXIMAGE_H_ |
||||||
|
|
||||||
|
#define MAX_HW_CFG_SIZE 60 /* Max number of registers imx can set */ |
||||||
|
#define MAX_EXP_SIZE 4 |
||||||
|
#define APP_CODE_BARKER 0xB1 |
||||||
|
#define DCD_BARKER 0xB17219E9 |
||||||
|
#define HEADER_OFFSET 0x400 |
||||||
|
|
||||||
|
|
||||||
|
#define CMD_DATA_STR "DATA" |
||||||
|
#define FLASH_OFFSET_STANDARD 0x400 |
||||||
|
#define FLASH_OFFSET_NAND FLASH_OFFSET_STANDARD |
||||||
|
#define FLASH_OFFSET_SD FLASH_OFFSET_STANDARD |
||||||
|
#define FLASH_OFFSET_SPI FLASH_OFFSET_STANDARD |
||||||
|
#define FLASH_OFFSET_ONENAND 0x100 |
||||||
|
|
||||||
|
enum imximage_cmd { |
||||||
|
CMD_INVALID, |
||||||
|
CMD_BOOT_FROM, |
||||||
|
CMD_DATA |
||||||
|
}; |
||||||
|
|
||||||
|
enum imximage_fld_types { |
||||||
|
CFG_INVALID = -1, |
||||||
|
CFG_COMMAND, |
||||||
|
CFG_REG_SIZE, |
||||||
|
CFG_REG_ADDRESS, |
||||||
|
CFG_REG_VALUE |
||||||
|
}; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
uint8_t rsa_exponent[MAX_EXP_SIZE]; /* RSA public exponent */ |
||||||
|
uint8_t *rsa_modulus; /* RSA modulus pointer */ |
||||||
|
uint16_t exponent_size; /* Exponent size (bytes) */ |
||||||
|
uint16_t modulus_size; /* Modulus size (bytes) */ |
||||||
|
uint8_t init_flag; /* key initialized */ |
||||||
|
} hab_rsa_public_key; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
uint32_t type; /* Type of pointer (byte, halfword, word, wait/read) */ |
||||||
|
uint32_t addr; /* Address to write to */ |
||||||
|
uint32_t value; /* Data to write */ |
||||||
|
} dcd_type_addr_data_t; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
uint32_t barker; /* Barker for sanity check */ |
||||||
|
uint32_t length; /* Device configuration length (without preamble) */ |
||||||
|
} dcd_preamble_t; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
dcd_preamble_t preamble; |
||||||
|
dcd_type_addr_data_t addr_data[MAX_HW_CFG_SIZE]; |
||||||
|
} dcd_t; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
uint32_t app_code_jump_vector; |
||||||
|
uint32_t app_code_barker; |
||||||
|
uint32_t app_code_csf; |
||||||
|
uint32_t dcd_ptr_ptr; |
||||||
|
hab_rsa_public_key *super_root_key; |
||||||
|
uint32_t dcd_ptr; |
||||||
|
uint32_t app_dest_ptr; |
||||||
|
} flash_header_t; |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
uint32_t length; /* Length of data to be read from flash */ |
||||||
|
} flash_cfg_parms_t; |
||||||
|
|
||||||
|
struct imx_header { |
||||||
|
flash_header_t fhdr; |
||||||
|
dcd_t dcd_table; |
||||||
|
flash_cfg_parms_t ext_header; |
||||||
|
uint32_t flash_offset; |
||||||
|
}; |
||||||
|
|
||||||
|
struct reg_config { |
||||||
|
uint32_t raddr; |
||||||
|
uint32_t rdata; |
||||||
|
}; |
||||||
|
|
||||||
|
#endif /* _IMXIMAGE_H_ */ |
Loading…
Reference in new issue