fw_env: calculate default number of env sectors

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 8ea097d0e65e899fd2ed37f6bb5b3109776b09d2..216f0c70aa9403534127dcd256627fa55e12f08e 100644 (file)
--- a/README
+++ b/README
@@ -471,6 +471,12 @@ The following options need to be configured:
                Board config to use DDR3. It can be enabled for SoCs with
                Freescale DDR3 controllers.
 
                Board config to use DDR3. It can be enabled for SoCs with
                Freescale DDR3 controllers.
 

+               CONFIG_SYS_FSL_IFC_BE
+               Defines the IFC controller register space as Big Endian
+
+               CONFIG_SYS_FSL_IFC_LE
+               Defines the IFC controller register space as Little Endian
+

                CONFIG_SYS_FSL_PBL_PBI
                It enables addition of RCW (Power on reset configuration) in built image.
                Please refer doc/README.pblimage for more details
                CONFIG_SYS_FSL_PBL_PBI
                It enables addition of RCW (Power on reset configuration) in built image.
                Please refer doc/README.pblimage for more details


@@ -480,6 +486,22 @@ The following options need to be configured:
                PBI commands can be used to configure SoC before it starts the execution.
                Please refer doc/README.pblimage for more details
 
                PBI commands can be used to configure SoC before it starts the execution.
                Please refer doc/README.pblimage for more details
 

+               CONFIG_SYS_FSL_DDR_BE
+               Defines the DDR controller register space as Big Endian
+
+               CONFIG_SYS_FSL_DDR_LE
+               Defines the DDR controller register space as Little Endian
+
+               CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY
+               Physical address from the view of DDR controllers. It is the
+               same as CONFIG_SYS_DDR_SDRAM_BASE for  all Power SoCs. But
+               it could be different for ARM SoCs.
+
+               CONFIG_SYS_FSL_DDR_INTLV_256B
+               DDR controller interleaving on 256-byte. This is a special
+               interleaving mode, handled by Dickens for Freescale layerscape
+               SoCs with ARM core.
+

 - Intel Monahans options:
                CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
 
 - Intel Monahans options:
                CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
 


@@ -895,6 +917,7 @@ The following options need to be configured:
                CONFIG_CMD_BSP          * Board specific commands
                CONFIG_CMD_BOOTD          bootd
                CONFIG_CMD_CACHE        * icache, dcache
                CONFIG_CMD_BSP          * Board specific commands
                CONFIG_CMD_BOOTD          bootd
                CONFIG_CMD_CACHE        * icache, dcache

+               CONFIG_CMD_CLK          * clock command support

                CONFIG_CMD_CONSOLE        coninfo
                CONFIG_CMD_CRC32        * crc32
                CONFIG_CMD_DATE         * support for RTC, date/time...
                CONFIG_CMD_CONSOLE        coninfo
                CONFIG_CMD_CRC32        * crc32
                CONFIG_CMD_DATE         * support for RTC, date/time...


@@ -915,10 +938,11 @@ The following options need to be configured:
                CONFIG_CMD_EXPORTENV    * export the environment
                CONFIG_CMD_EXT2         * ext2 command support
                CONFIG_CMD_EXT4         * ext4 command support
                CONFIG_CMD_EXPORTENV    * export the environment
                CONFIG_CMD_EXT2         * ext2 command support
                CONFIG_CMD_EXT4         * ext4 command support

+               CONFIG_CMD_FS_GENERIC   * filesystem commands (e.g. load, ls)
+                                         that work for multiple fs types

                CONFIG_CMD_SAVEENV        saveenv
                CONFIG_CMD_FDC          * Floppy Disk Support
                CONFIG_CMD_FAT          * FAT command support
                CONFIG_CMD_SAVEENV        saveenv
                CONFIG_CMD_FDC          * Floppy Disk Support
                CONFIG_CMD_FAT          * FAT command support

-               CONFIG_CMD_FDOS         * Dos diskette Support

                CONFIG_CMD_FLASH          flinfo, erase, protect
                CONFIG_CMD_FPGA           FPGA device initialization support
                CONFIG_CMD_FUSE         * Device fuse support
                CONFIG_CMD_FLASH          flinfo, erase, protect
                CONFIG_CMD_FPGA           FPGA device initialization support
                CONFIG_CMD_FUSE         * Device fuse support


@@ -1717,7 +1741,7 @@ CBFS (Coreboot Filesystem) support
 
                If this option is set, then U-Boot will prevent the environment
                variable "splashimage" from being set to a problematic address
 
                If this option is set, then U-Boot will prevent the environment
                variable "splashimage" from being set to a problematic address

-               (see README.displaying-bmps and README.arm-unaligned-accesses).
+               (see README.displaying-bmps).

                This option is useful for targets where, due to alignment
                restrictions, an improperly aligned BMP image will cause a data
                abort. If you think you will not have problems with unaligned
                This option is useful for targets where, due to alignment
                restrictions, an improperly aligned BMP image will cause a data
                abort. If you think you will not have problems with unaligned


@@ -2840,11 +2864,31 @@ CBFS (Coreboot Filesystem) support
                CONFIG_RSA
 
                This enables the RSA algorithm used for FIT image verification
                CONFIG_RSA
 
                This enables the RSA algorithm used for FIT image verification

-               in U-Boot. See doc/uImage/signature for more information.
+               in U-Boot. See doc/uImage.FIT/signature.txt for more information.

 
                The signing part is build into mkimage regardless of this
                option.
 
 
                The signing part is build into mkimage regardless of this
                option.
 

+- bootcount support:
+               CONFIG_BOOTCOUNT_LIMIT
+
+               This enables the bootcounter support, see:
+               http://www.denx.de/wiki/DULG/UBootBootCountLimit
+
+               CONFIG_AT91SAM9XE
+               enable special bootcounter support on at91sam9xe based boards.
+               CONFIG_BLACKFIN
+               enable special bootcounter support on blackfin based boards.
+               CONFIG_SOC_DA8XX
+               enable special bootcounter support on da850 based boards.
+               CONFIG_BOOTCOUNT_RAM
+               enable support for the bootcounter in RAM
+               CONFIG_BOOTCOUNT_I2C
+               enable support for the bootcounter on an i2c (like RTC) device.
+                       CONFIG_SYS_I2C_RTC_ADDR = i2c chip address
+                       CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
+                                                   the bootcounter.
+                       CONFIG_BOOTCOUNT_ALEN = address len

 
 - Show boot progress:
                CONFIG_SHOW_BOOT_PROGRESS
 
 - Show boot progress:
                CONFIG_SHOW_BOOT_PROGRESS


@@ -3426,6 +3470,9 @@ typically in board_init_f() and board_init_r().
 Configuration Settings:
 -----------------------
 
 Configuration Settings:
 -----------------------
 

+- CONFIG_SYS_SUPPORT_64BIT_DATA: Defined automatically if compiled as 64-bit.
+               Optionally it can be defined to support 64-bit memory commands.
+

 - CONFIG_SYS_LONGHELP: Defined when you want long help messages included;
                undefine this when you're short of memory.
 
 - CONFIG_SYS_LONGHELP: Defined when you want long help messages included;
                undefine this when you're short of memory.
 


@@ -3698,12 +3745,6 @@ Configuration Settings:
        its config.mk file). If you find problems enabling this option on
        your board please report the problem and send patches!
 
        its config.mk file). If you find problems enabling this option on
        your board please report the problem and send patches!
 

-- CONFIG_SYS_SYM_OFFSETS
-       This is set by architectures that use offsets for link symbols
-       instead of absolute values. So bss_start is obtained using an
-       offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than
-       directly. You should not need to touch this setting.
-

 - CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only)
        This is set by OMAP boards for the max time that reset should
        be asserted. See doc/README.omap-reset-time for details on how
 - CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only)
        This is set by OMAP boards for the max time that reset should
        be asserted. See doc/README.omap-reset-time for details on how