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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/u-boot/doc/README.nokia_rx51
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
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-Board: Nokia RX-51 aka N900
-
-This board definition results in a u-boot.bin which can be chainloaded
-from NOLO in qemu or on a real N900. It does very little hardware config
-because NOLO has already configured the board. Only needed is enabling
-internal eMMC memory via twl4030 regulator which is not enabled by NOLO.
-
-NOLO is expecting a kernel image and will treat any image it finds in
-onenand as such. This u-boot is intended to be flashed to the N900 like
-a kernel. In order to transparently boot the original kernel, it will be
-appended to u-boot.bin at 0x40000. NOLO will load the entire image into
-(random) memory and execute u-boot, which saves hw revision, boot reason
-and boot mode ATAGs set by NOLO. Then the bootscripts will attempt to load
-uImage or boot.scr from a fat, ext2/ext3 or ext4 filesystem in external
-SD card or internal eMMC memory. If this fails or keyboard is closed then
-the appended kernel image will be booted using some generated and some
-stored ATAGs (see boot order).
-
-There is support for hardware watchdog. Hardware watchdog is started by
-NOLO so u-boot must kick watchdog to prevent reboot device (but not very
-often, max every 2 seconds). There is also support for framebuffer display
-output with ANSI espace codes and the N900 HW keyboard input. USB tty works
-but is disabled because it prevents the current Maemo kernel from booting.
-
-When U-Boot is starting it enable IBE bit in Auxiliary Control Register,
-which is needed for Thumb-2 ISA support. It is workaround for errata 430973.
-
-Default boot order:
-
- * 0. if keyboard is closed boot automatically attached kernel image
- * 1. try boot from external SD card
- * 2. try boot from internal eMMC memory
- * 3. try boot from attached kernel image
-
-Boot from SD or eMMC in this order:
-
- * 1.
- * 1.1 find boot.scr on first fat partition
- * 1.2 find uImage on first fat parition
- * 1.3 same order for 2. - 4. fat partition
- * 2. same as 1. but for ext2/3 partition
- * 3. same as 1. but for ext4 partition
-
-
-Available additional commands/variables:
-
- * run sercon - Use serial port for control
- * run usbcon - Use usbtty for control
- * run vgacon - Use framebuffer and HW keyboard for control (default)
-
- * run sdboot - Boot from external SD card (see boot order)
- * run emmcboot - Boot from internal eMMC memory (see boot order)
- * run attachboot - Boot attached kernel image (attached to U-Boot binary)
-
- * run scriptload - Load boot script ${mmcscriptfile}
- * run scriptboot - Run loaded boot script
- * run kernload - Load kernel image ${mmckernfile}
- * run initrdload - Load initrd image ${mmcinitrdfile}
- * run kernboot - Boot loaded kernel image
- * run kerninitrdboot - Boot loaded kernel image with loaded initrd image
-
- * run trymmcscriptboot - Try to load and boot script ${mmcscriptfile}
- * run trymmckernboot - Try to load and boot kernel image ${mmckernfile}
- * run trymmckerninitrdboot - Try to load and boot kernel image ${mmckernfile}
- with initrd image ${mmcinitrdfile}
-
-Additional variables for loading files from mmc:
-
- * mmc ${mmcnum} (0 - external, 1 - internal)
- * partition number ${mmcpart} (1 - 4)
- * parition type ${mmctype} (fat, ext2)
-
-Additional varuables for booting kernel:
-
- * setup_omap_atag - Add OMAP table into atags structure (needs maemo kernel)
- * setup_console_atag - Enable serial console in OMAP table
- * setup_boot_reason_atag - Change boot reason in OMAP table
- * setup_boot_mode_atag - Change boot mode in OMAP table
-
-USB TTY:
-
- Maemo kernel 2.6.28 will crash if u-boot enable usb tty. So USB TTY is disabled.
- For enabling USB TTY just add this line to file include/configs/nokia_rx51.h
-
- #define CONFIG_USB_TTY
-
-
-ONENAND support:
-
- ONENAND support is disabled because not working yet and cause linux kernel to
- crash or no access to mtd. For enabling ONENAND support add this line at begin
- of file include/configs/nokia_rx51.h
-
- #define ONENAND_SUPPORT
-
-
-UBIFS support:
-
- UBIFS support is disabled, because U-Boot image is too big and cannot be
- flashed with attached zImage to RX-51 kernel nand area. For enabling UBIFS
- support first enable ONENAND support and then add this line at begin of file
- include/configs/nokia_rx51.h
-
- #define UBIFS_SUPPORT