mmc: omap_hsmmc: enable 8bit interface for eMMC for AM43xx

[karo-tx-uboot.git] / doc / README.imximage

diff --git a/doc/README.imximage b/doc/README.imximage
index 073e3fcb3c6ecc9a7dfa8af468c76f96b16bd4d5..27d335456997a702ff072f870e7e97fc5d91c74a 100644 (file)
--- a/doc/README.imximage
+++ b/doc/README.imximage
@@ -15,9 +15,6 @@ Booting from NOR flash does not require to use this image type.
 For more details refer Chapter 2 - System Boot and section 2.14
 (flash header description) of the processor's manual.
 
-This implementation does not use at the moment the secure boot feature
-of the processor. The image is generated disabling all security fields.
-
 Command syntax:
 --------------
 ./tools/mkimage -l <mx u-boot_file>
@@ -65,9 +62,54 @@ Configuration command line syntax:
                                This command need appear the fist before
                                other valid commands in configuration file.
 
+       BOOT_OFFSET             value
+
+                               This command is parallel to BOOT_FROM and
+                               is preferred over BOOT_FROM.
+
+                               value:  Offset of the image header, this
+                                       value shall be set to one of the
+                                       values found in the file:
+                                               arch/arm/include/asm/\
+                                               imx-common/imximage.cfg
+                               Example:
+                               BOOT_OFFSET FLASH_OFFSET_STANDARD
+
        BOOT_FROM               nand/spi/sd/onenand/nor/sata
+
+                               This command is parallel to BOOT_OFFSET and
+                               is to be deprecated in favor of BOOT_OFFSET.
+
                                Example:
                                BOOT_FROM spi
+
+       CSF                     value
+
+                               Total size of CSF (Command Sequence File)
+                               used for Secure Boot/ High Assurance Boot
+                               (HAB).
+
+                               Using this command will populate the IVT
+                               (Initial Vector Table) CSF pointer and adjust
+                               the length fields only. The CSF itself needs
+                               to be generated with Freescale tools and
+                               'manually' appended to the u-boot.imx file.
+
+                               The CSF is then simply concatenated
+                               to the u-boot image, making a signed bootloader,
+                               that the processor can verify
+                               if the fuses for the keys are burned.
+
+                               Further infos how to configure the SOC to verify
+                               the bootloader can be found in the "High
+                               Assurance Boot Version Application Programming
+                               Interface Reference Manual" as part of the
+                               Freescale Code Signing Tool, available on the
+                               manufacturer's website.
+
+                               Example:
+                               CSF 0x2000
+
        DATA                    type address value
 
                                type: word=4, halfword=2, byte=1
@@ -78,7 +120,7 @@ Configuration command line syntax:
                                DATA 4 0x73FA88a0 0x200
 
 The processor support up to 60 register programming commands for IMXIMAGE_VERSION 1
-and 121 register programming commands for IMXIMAGE_VERSION 2.
+and 220 register programming commands for IMXIMAGE_VERSION 2.
 An error is generated if more commands are found in the configuration file.
 
 3. All commands are optional to program.