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2 Freescale PBL(pre-boot loader) Boot Image generation using mkimage
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5 The CoreNet SoC's can boot directly from eSPI FLASH, SD/MMC and
6 NAND, etc. These SoCs use PBL to load RCW and/or pre-initialization
7 instructions. For more details refer section 5 Pre-boot loader
8 specifications of reference manual P3041RM/P4080RM/P5020RM at link:
9 http://www.freescale.com/webapp/search/Serp.jsp?Reference+Manuals
11 Building PBL Boot Image and boot steps
12 --------------------------------------
14 1. Building PBL Boot Image.
15 The default Image is u-boot.pbl.
17 For eSPI boot(available on P2041/P3041/P4080/P5020/P5040/T4240):
18 To build the eSPI boot image:
19 make <board_name>_SPIFLASH
21 For SD boot(available on P2041/P3041/P4080/P5020/P5040/T4240):
22 To build the SD boot image:
23 make <board_name>_SDCARD
25 For Nand boot(available on P2041/P3041/P5020/P5040):
26 To build the NAND boot image:
27 make <board_name>_NAND
30 2. pblimage support available with mkimage utility will generate Freescale PBL
31 boot image that can be flashed on the board eSPI flash, SD/MMC and NAND.
32 Following steps describe it in detail.
34 1). Boot from eSPI flash
35 Write u-boot.pbl to eSPI flash from offset 0x0.
37 =>tftp 100000 u-boot.pbl
40 =>sf write 100000 0 $filesize
41 Change SW1[1:5] = off off on off on.
44 Write u-boot.pbl to SD/MMC from offset 0x1000.
46 =>tftp 100000 u-boot.pbl
48 =>mmc write 100000 8 441
49 Change SW1[1:5] = off off on on off.
52 Write u-boot.pbl to Nand from offset 0x0.
54 =>tftp 100000 u-boot.pbl
57 =>nand write 100000 0 $filesize
58 Change SW1[1:5] = off on off off on
59 Change SW7[1:4] = on off off on
61 Board specific configuration file specifications:
62 ------------------------------------------------
63 1. Configuration files rcw.cfg and pbi.cfg must present in the
64 board/freescale/<BOARD>/ directory, rcw.cfg is for RCW, pbi.cfg is for
65 PBI instructions. File name must not be changed since they are used
67 2. These files can have empty lines and lines starting with "#" as first
68 character to put comments
70 Typical example of rcw.cfg file:
71 -----------------------------------
73 #PBL preamble and RCW header
76 4c580000 00000000 18185218 0000cccc
77 40464000 3c3c2000 58000000 61000000
78 00000000 00000000 00000000 008b6000
79 00000000 00000000 00000000 00000000
81 Typical example of pbi.cfg file:
82 -----------------------------------
93 #Configure LAW for CPC1
100 #Initialize eSPI controller
110 ------------------------------------------------
111 Author: Shaohui Xie<Shaohui.Xie@freescale.com>