imx: hab: Check if CSF contains deprecated commands

[people/ms/u-boot.git] / README

diff --git a/README b/README
index 242287ca9b930c6a33a8bd9b523b8b48d22da856..fabd532623924bbdf1a32d471b8862e5e5c2e36c 100644 (file)
--- a/README
+++ b/README
@@ -143,6 +143,7 @@ Directory Hierarchy:
   /nios2               Files generic to Altera NIOS2 architecture
   /openrisc            Files generic to OpenRISC architecture
   /powerpc             Files generic to PowerPC architecture
   /nios2               Files generic to Altera NIOS2 architecture
   /openrisc            Files generic to OpenRISC architecture
   /powerpc             Files generic to PowerPC architecture

+  /riscv               Files generic to RISC-V architecture

   /sandbox             Files generic to HW-independent "sandbox"
   /sh                  Files generic to SH architecture
   /x86                 Files generic to x86 architecture
   /sandbox             Files generic to HW-independent "sandbox"
   /sh                  Files generic to SH architecture
   /x86                 Files generic to x86 architecture


@@ -713,11 +714,6 @@ The following options need to be configured:
                RAM and NFS.
 
 - Bootcount:
                RAM and NFS.
 
 - Bootcount:

-               CONFIG_BOOTCOUNT_LIMIT
-               Implements a mechanism for detecting a repeating reboot
-               cycle, see:
-               http://www.denx.de/wiki/view/DULG/UBootBootCountLimit
-

                CONFIG_BOOTCOUNT_ENV
                If no softreset save registers are found on the hardware
                "bootcount" is stored in the environment. To prevent a
                CONFIG_BOOTCOUNT_ENV
                If no softreset save registers are found on the hardware
                "bootcount" is stored in the environment. To prevent a


@@ -1028,21 +1024,6 @@ The following options need to be configured:
                        control registers. This behavior won't affect the
                        correctnessof 10/100 link speed update.
 
                        control registers. This behavior won't affect the
                        correctnessof 10/100 link speed update.
 

-               CONFIG_SMC911X
-               Support for SMSC's LAN911x and LAN921x chips
-
-                       CONFIG_SMC911X_BASE
-                       Define this to hold the physical address
-                       of the device (I/O space)
-
-                       CONFIG_SMC911X_32_BIT
-                       Define this if data bus is 32 bits
-
-                       CONFIG_SMC911X_16_BIT
-                       Define this if data bus is 16 bits. If your processor
-                       automatically converts one 32 bit word to two 16 bit
-                       words you may also try CONFIG_SMC911X_32_BIT.
-

                CONFIG_SH_ETHER
                Support for Renesas on-chip Ethernet controller
 
                CONFIG_SH_ETHER
                Support for Renesas on-chip Ethernet controller
 


@@ -1618,6 +1599,15 @@ The following options need to be configured:
 
                See doc/README.link-local for more information.
 
 
                See doc/README.link-local for more information.
 

+ - MAC address from environment variables
+
+               FDT_SEQ_MACADDR_FROM_ENV
+
+               Fix-up device tree with MAC addresses fetched sequentially from
+               environment variables. This config work on assumption that
+               non-usable ethernet node of device-tree are either not present
+               or their status has been marked as "disabled".
+

  - CDP Options:
                CONFIG_CDP_DEVICE_ID
 
  - CDP Options:
                CONFIG_CDP_DEVICE_ID
 


@@ -2006,11 +1996,6 @@ The following options need to be configured:
                SPI EEPROM, also an instance works with Crystal A/D and
                D/As on the SACSng board)
 
                SPI EEPROM, also an instance works with Crystal A/D and
                D/As on the SACSng board)
 

-               CONFIG_SH_SPI
-
-               Enables the driver for SPI controller on SuperH. Currently
-               only SH7757 is supported.
-

                CONFIG_SOFT_SPI
 
                Enables a software (bit-bang) SPI driver rather than
                CONFIG_SOFT_SPI
 
                Enables a software (bit-bang) SPI driver rather than


@@ -2029,11 +2014,6 @@ The following options need to be configured:
                Currently supported on some MPC8xxx processors.  For an
                example, see include/configs/mpc8349emds.h.
 
                Currently supported on some MPC8xxx processors.  For an
                example, see include/configs/mpc8349emds.h.
 

-               CONFIG_MXC_SPI
-
-               Enables the driver for the SPI controllers on i.MX and MXC
-               SoCs. Currently i.MX31/35/51 are supported.
-

                CONFIG_SYS_SPI_MXC_WAIT
                Timeout for waiting until spi transfer completed.
                default: (CONFIG_SYS_HZ/100)     /* 10 ms */
                CONFIG_SYS_SPI_MXC_WAIT
                Timeout for waiting until spi transfer completed.
                default: (CONFIG_SYS_HZ/100)     /* 10 ms */


@@ -2183,16 +2163,6 @@ The following options need to be configured:
                currently only supports clearing the memory.
 
 - Error Recovery:
                currently only supports clearing the memory.
 
 - Error Recovery:

-               CONFIG_PANIC_HANG
-
-               Define this variable to stop the system in case of a
-               fatal error, so that you have to reset it manually.
-               This is probably NOT a good idea for an embedded
-               system where you want the system to reboot
-               automatically as fast as possible, but it may be
-               useful during development since you can try to debug
-               the conditions that lead to the situation.
-

                CONFIG_NET_RETRY_COUNT
 
                This variable defines the number of retries for
                CONFIG_NET_RETRY_COUNT
 
                This variable defines the number of retries for


@@ -2326,18 +2296,6 @@ The following options need to be configured:
                CONFIG_SF_DEFAULT_MODE          (see include/spi.h)
                CONFIG_SF_DEFAULT_SPEED         in Hz
 
                CONFIG_SF_DEFAULT_MODE          (see include/spi.h)
                CONFIG_SF_DEFAULT_SPEED         in Hz
 

-               CONFIG_SYSTEMACE
-
-               Adding this option adds support for Xilinx SystemACE
-               chips attached via some sort of local bus. The address
-               of the chip must also be defined in the
-               CONFIG_SYS_SYSTEMACE_BASE macro. For example:
-
-               #define CONFIG_SYSTEMACE
-               #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000
-
-               When SystemACE support is added, the "ace" device type
-               becomes available to the fat commands, i.e. fatls.

 
 - TFTP Fixed UDP Port:
                CONFIG_TFTP_PORT
 
 - TFTP Fixed UDP Port:
                CONFIG_TFTP_PORT


@@ -2360,11 +2318,6 @@ The following options need to be configured:
                but sometimes that is not allowed.
 
 - bootcount support:
                but sometimes that is not allowed.
 
 - 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_SOC_DA8XX
                CONFIG_AT91SAM9XE
                enable special bootcounter support on at91sam9xe based boards.
                CONFIG_SOC_DA8XX


@@ -2377,6 +2330,13 @@ The following options need to be configured:
                        CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
                                                    the bootcounter.
                        CONFIG_BOOTCOUNT_ALEN = address len
                        CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
                                                    the bootcounter.
                        CONFIG_BOOTCOUNT_ALEN = address len

+               CONFIG_BOOTCOUNT_EXT
+               enable support for the bootcounter in EXT filesystem
+                       CONFIG_SYS_BOOTCOUNT_ADDR = RAM address used for read
+                                                    and write.
+                       CONFIG_SYS_BOOTCOUNT_EXT_INTERFACE = interface
+                       CONFIG_SYS_BOOTCOUNT_EXT_DEVPART = device and part
+                       CONFIG_SYS_BOOTCOUNT_EXT_NAME = filename

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


@@ -2734,11 +2694,6 @@ FIT uImage format:
                CONFIG_SYS_SPL_MALLOC_SIZE
                The size of the malloc pool used in SPL.
 
                CONFIG_SYS_SPL_MALLOC_SIZE
                The size of the malloc pool used in SPL.
 

-               CONFIG_SPL_FRAMEWORK
-               Enable the SPL framework under common/.  This framework
-               supports MMC, NAND and YMODEM loading of U-Boot and NAND
-               NAND loading of the Linux Kernel.
-

                CONFIG_SPL_OS_BOOT
                Enable booting directly to an OS from SPL.
                See also: doc/README.falcon
                CONFIG_SPL_OS_BOOT
                Enable booting directly to an OS from SPL.
                See also: doc/README.falcon


@@ -3519,7 +3474,7 @@ Low Level (hardware related) configuration options:
                globally (CONFIG_CMD_MEMORY).
 
 - CONFIG_SKIP_LOWLEVEL_INIT
                globally (CONFIG_CMD_MEMORY).
 
 - CONFIG_SKIP_LOWLEVEL_INIT

-               [ARM, NDS32, MIPS only] If this variable is defined, then certain
+               [ARM, NDS32, MIPS, RISC-V only] If this variable is defined, then certain

                low level initializations (like setting up the memory
                controller) are omitted and/or U-Boot does not
                relocate itself into RAM.
                low level initializations (like setting up the memory
                controller) are omitted and/or U-Boot does not
                relocate itself into RAM.


@@ -3727,6 +3682,11 @@ this behavior and build U-Boot to some external directory:
 Note that the command line "O=" setting overrides the KBUILD_OUTPUT environment
 variable.
 
 Note that the command line "O=" setting overrides the KBUILD_OUTPUT environment
 variable.
 

+User specific CPPFLAGS, AFLAGS and CFLAGS can be passed to the compiler by
+setting the according environment variables KCPPFLAGS, KAFLAGS and KCFLAGS.
+For example to treat all compiler warnings as errors:
+
+       make KCFLAGS=-Werror

 
 Please be aware that the Makefiles assume you are using GNU make, so
 for instance on NetBSD you might need to use "gmake" instead of
 
 Please be aware that the Makefiles assume you are using GNU make, so
 for instance on NetBSD you might need to use "gmake" instead of


@@ -4973,6 +4933,22 @@ On NDS32, the following registers are used:
 NOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope,
 or current versions of GCC may "optimize" the code too much.
 
 NOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope,
 or current versions of GCC may "optimize" the code too much.
 

+On RISC-V, the following registers are used:
+
+       x0: hard-wired zero (zero)
+       x1: return address (ra)
+       x2:     stack pointer (sp)
+       x3:     global pointer (gp)
+       x4:     thread pointer (tp)
+       x5:     link register (t0)
+       x8:     frame pointer (fp)
+       x10-x11:        arguments/return values (a0-1)
+       x12-x17:        arguments (a2-7)
+       x28-31:  temporaries (t3-6)
+       pc:     program counter (pc)
+
+    ==> U-Boot will use gp to hold a pointer to the global data
+

 Memory Management:
 ------------------
 
 Memory Management:
 ------------------
 


@@ -5134,8 +5110,9 @@ Coding Standards:
 -----------------
 
 All contributions to U-Boot should conform to the Linux kernel
 -----------------
 
 All contributions to U-Boot should conform to the Linux kernel

-coding style; see the file "Documentation/CodingStyle" and the script
-"scripts/Lindent" in your Linux kernel source directory.
+coding style; see the kernel coding style guide at
+https://www.kernel.org/doc/html/latest/process/coding-style.html, and the
+script "scripts/Lindent" in your Linux kernel source directory.

 
 Source files originating from a different project (for example the
 MTD subsystem) are generally exempt from these guidelines and are not
 
 Source files originating from a different project (for example the
 MTD subsystem) are generally exempt from these guidelines and are not


@@ -5167,7 +5144,7 @@ may be rejected, even when they contain important and valuable stuff.
 Please see http://www.denx.de/wiki/U-Boot/Patches for details.
 
 Patches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>;
 Please see http://www.denx.de/wiki/U-Boot/Patches for details.
 
 Patches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>;

-see http://lists.denx.de/mailman/listinfo/u-boot
+see https://lists.denx.de/listinfo/u-boot

 
 When you send a patch, please include the following information with
 it:
 
 When you send a patch, please include the following information with
 it: