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authorWolfgang Denk <wd@denx.de>2012-04-29 23:57:39 +0000
committerWolfgang Denk <wd@denx.de>2012-07-29 15:42:02 +0200
commit702e6014f15b307f144fa03ecaf83a8446c6802a (patch)
tree8c9360248c257f52c1487d9e6cbba3f2dc38e294 /doc/README.mpc8572ds
parent631fea8f2d70aa5eb7c49b33039971dfc61bba88 (diff)
doc: cleanup - move board READMEs into respective board directories
Also drop a few files referring to no longer / not yet supported boards. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Stefan Roese <sr@denx.de> Cc: Kim Phillips <kim.phillips@freescale.com> Cc: Andy Fleming <afleming@gmail.com> Cc: Jason Jin <jason.jin@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
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-Overview
---------
-MPC8572DS is a high-performance computing, evaluation and development platform
-supporting the mpc8572 PowerTM processor.
-
-Building U-boot
------------
- make MPC8572DS_config
- make
-
-Flash Banks
------------
-MPC8572DS board has two flash banks. They are both present on boot, but their
-locations can be swapped using the dip-switch SW9[1:2].
-
-Booting is always from the boot bank at 0xec00_0000.
-
-
-Memory Map
-----------
-
-0xe800_0000 - 0xebff_ffff Alternate bank 64MB
-0xec00_0000 - 0xefff_ffff Boot bank 64MB
-
-0xebf8_0000 - 0xebff_ffff Alternate u-boot address 512KB
-0xeff8_0000 - 0xefff_ffff Boot u-boot address 512KB
-
-
-Flashing Images
----------------
-
-To place a new u-boot image in the alternate flash bank and then reset with that
- new image temporarily, use this:
-
- tftp 1000000 u-boot.bin
- erase ebf80000 ebffffff
- cp.b 1000000 ebf80000 80000
- pixis_reset altbank
-
-
-To program the image in the boot flash bank:
-
- tftp 1000000 u-boot.bin
- protect off all
- erase eff80000 ffffffff
- cp.b 1000000 eff80000 80000
-
-
-The pixis_reset command
------------------------
-The command - "pixis_reset", is introduced to reset mpc8572ds board
-using the FPGA sequencer. When the board restarts, it has the option
-of using either the current or alternate flash bank as the boot
-image, with or without the watchdog timer enabled, and finally with
-or without frequency changes.
-
-Usage is;
-
- pixis_reset
- pixis_reset altbank
- pixis_reset altbank wd
- pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
- pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>
-
-Examples:
-
- /* reset to current bank, like "reset" command */
- pixis_reset
-
- /* reset board but use the to alternate flash bank */
- pixis_reset altbank
-
-
-Using the Device Tree Source File
----------------------------------
-To create the DTB (Device Tree Binary) image file,
-use a command similar to this:
-
- dtc -b 0 -f -I dts -O dtb mpc8572ds.dts > mpc8572ds.dtb
-
-Likely, that .dts file will come from here;
-
- linux-2.6/arch/powerpc/boot/dts/mpc8572ds.dts
-
-
-Booting Linux
--------------
-
-Place a linux uImage in the TFTP disk area.
-
- tftp 1000000 uImage.8572
- tftp c00000 mpc8572ds.dtb
- bootm 1000000 - c00000
-
-
-Implementing AMP(Asymmetric MultiProcessing)
--------------
-1. Build kernel image for core0:
-
- a. $ make 85xx/mpc8572_ds_defconfig
-
- b. $ make menuconfig
- - un-select "Processor support"->"Symetric multi-processing support"
-
- c. $ make uImage
-
- d. $ cp arch/powerpc/boot/uImage /tftpboot/uImage.core0
-
-2. Build kernel image for core1:
-
- a. $ make 85xx/mpc8572_ds_defconfig
-
- b. $ make menuconfig
- - Un-select "Processor support"->"Symetric multi-processing support"
- - Select "Advanced setup" -> " Prompt for advanced kernel
- configuration options"
- - Select "Set physical address where the kernel is loaded" and
- set it to 0x20000000, assuming core1 will start from 512MB.
- - Select "Set custom page offset address"
- - Select "Set custom kernel base address"
- - Select "Set maximum low memory"
- - "Exit" and save the selection.
-
- c. $ make uImage
-
- d. $ cp arch/powerpc/boot/uImage /tftpboot/uImage.core1
-
-3. Create dtb for core0:
-
- $ dtc -I dts -O dtb -f -b 0 arch/powerpc/boot/dts/mpc8572ds_core0.dts > /tftpboot/mpc8572ds_core0.dtb
-
-4. Create dtb for core1:
-
- $ dtc -I dts -O dtb -f -b 1 arch/powerpc/boot/dts/mpc8572ds_core1.dts > /tftpboot/mpc8572ds_core1.dtb
-
-5. Bring up two cores separately:
-
- a. Power on the board, under u-boot prompt:
- => setenv <serverip>
- => setenv <ipaddr>
- => setenv bootargs root=/dev/ram rw console=ttyS0,115200
- b. Bring up core1's kernel first:
- => setenv bootm_low 0x20000000
- => setenv bootm_size 0x10000000
- => tftp 21000000 8572/uImage.core1
- => tftp 22000000 8572/ramdiskfile
- => tftp 20c00000 8572/mpc8572ds_core1.dtb
- => interrupts off
- => bootm start 21000000 22000000 20c00000
- => bootm loados
- => bootm ramdisk
- => bootm fdt
- => fdt boardsetup
- => fdt chosen $initrd_start $initrd_end
- => bootm prep
- => cpu 1 release $bootm_low - $fdtaddr -
- c. Bring up core0's kernel(on the same u-boot console):
- => setenv bootm_low 0
- => setenv bootm_size 0x20000000
- => tftp 1000000 8572/uImage.core0
- => tftp 2000000 8572/ramdiskfile
- => tftp c00000 8572/mpc8572ds_core0.dtb
- => bootm 1000000 2000000 c00000
-
-Please note only core0 will run u-boot, core1 starts kernel directly after
-"cpu release" command is issued.