doc: imx: reorganize i.MX documentation

Currently the U-Boot doc/ directory contains the following files
that are only relevant for i.MX devices:

- doc/README.imx25
- doc/README.imx27
- doc/README.imx5
- doc/README.imx6
- doc/README.imximage
- doc/README.mxc_hab
- doc/README.mxs
- doc/README.mxsimage
- doc/README.sdp

Move all content to a common i.MX folder for a better documentation
structure.

Signed-off-by: Breno Lima <breno.lima@nxp.com>

1 files changed, 0 insertions, 115 deletions

diff --git a/doc/README.imx6 b/doc/README.imx6
deleted file mode 100644
index b0644f8..0000000
--- a/doc/README.imx6
+++ /dev/null
@@ -1,115 +0,0 @@
-U-Boot for Freescale i.MX6
-
-This file contains information for the port of U-Boot to the Freescale i.MX6
-SoC.
-
-1. CONVENTIONS FOR FUSE ASSIGNMENTS
------------------------------------
-
-1.1 MAC Address: It is stored in fuse bank 4, with the 32 lsbs in word 2 and the
-    16 msbs in word 3[15:0].
-    For i.MX6SX and i.MX6UL, they have two MAC addresses. The second MAC address
-    is stored in fuse bank 4, with the 16 lsb in word 3[31:16] and the 32 msbs in 
-    word 4.
-
-Example:
-
-For reading the MAC address fuses on a MX6Q:
-
-- The MAC address is stored in two fuse addresses (the fuse addresses are
-described in the Fusemap Descriptions table from the mx6q Reference Manual):
-
-0x620[31:0] - MAC_ADDR[31:0]
-0x630[15:0] - MAC_ADDR[47:32]
-
-In order to use the fuse API, we need to pass the bank and word values, which
-are calculated as below:
-
-Fuse address for the lower MAC address: 0x620
-Base address for the fuses: 0x400
-
-(0x620 - 0x400)/0x10 = 0x22 = 34 decimal
-
-As the fuses are arranged in banks of 8 words:
-
-34 / 8 = 4 and the remainder is 2, so in this case:
-
-bank = 4
-word = 2
-
-And the U-Boot command would be:
-
-=> fuse read 4 2
-Reading bank 4:
-
-Word 0x00000002: 9f027772
-
-Doing the same for the upper MAC address:
-
-Fuse address for the upper MAC address: 0x630
-Base address for the fuses: 0x400
-
-(0x630 - 0x400)/0x10 = 0x23 = 35 decimal
-
-As the fuses are arranged in banks of 8 words:
-
-35 / 8 = 4 and the remainder is 3, so in this case:
-
-bank = 4
-word = 3
-
-And the U-Boot command would be:
-
-=> fuse read 4 3
-Reading bank 4:
-
-Word 0x00000003: 00000004
-
-,which matches the ethaddr value:
-=> echo ${ethaddr}
-00:04:9f:02:77:72
-
-Some other useful hints:
-
-- The 'bank' and 'word' numbers can be easily obtained from the mx6 Reference
-Manual. For the mx6quad case, please check the "46.5 OCOTP Memory Map/Register
-Definition" from the "i.MX 6Dual/6Quad Applications Processor Reference Manual,
-Rev. 1, 04/2013" document. For example, for the MAC fuses we have:
-
-Address:
-21B_C620	Value of OTP Bank4 Word2 (MAC Address)(OCOTP_MAC0)
-
-21B_C630	Value of OTP Bank4 Word3 (MAC Address)(OCOTP_MAC1)
-
-- The command '=> fuse read 4 2 2' reads the whole MAC addresses at once:
-
-=> fuse read 4 2 2
-Reading bank 4:
-
-Word 0x00000002: 9f027772 00000004
-
-2. Using imx_usb_loader for first install with SPL
---------------------------------------------------
-
-imx_usb_loader is a very nice tool by Boundary Devices that
-allow to install U-Boot without a JTAG debugger, using
-the USB boot mode as described in the manual. It is
-a replacement for Freescale's MFGTOOLS.
-
-The sources can be found here:
-
-	https://github.com/boundarydevices/imx_usb_loader.git
-
-Booting in USB mode, the i.MX6 announces itself to the Linux Host as:
-
-Bus 001 Device 111: ID 15a2:0061 Freescale Semiconductor, Inc.
-
-imx_usb_loader is able to download a single file (u-boot.imx)
-to the board. For boards without SPL support, it is enough to
-issue the command:
-
-	sudo ../imx_usb_loader/imx_usb -v u-boot.imx
-
-In order to load SPL and u-boot.img via imx_usb_loader tool,
-please refer to doc/README.sdp.
-