Signed-off-by: Roland Hieber <rohieb@xxxxxxxxxxx> --- .../boards/imx/amazon-kindle-4-5.rst | 39 ++++++++++++------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/Documentation/boards/imx/amazon-kindle-4-5.rst b/Documentation/boards/imx/amazon-kindle-4-5.rst index 1e71cd26ba..bc6bf2609b 100644 --- a/Documentation/boards/imx/amazon-kindle-4-5.rst +++ b/Documentation/boards/imx/amazon-kindle-4-5.rst @@ -18,24 +18,32 @@ are shipped with a vendor modified u-boot imximage based on u-boot v2009.08. To upload and run a new bootloader the older devices can be put into USB-downloader mode by the SOC microcode when a specific key is pressed during startup: + * the fiveway down button on the model D01100 * the home button on model D01200 + A new USB device "NS Blank CODEX" should appear, barebox may be uploaded using -$ scripts/imx/imx-usb-loader barebox-kindle-d01100.img -$ scripts/imx/imx-usb-loader barebox-kindle-d01200.img + +:: + + $ scripts/imx/imx-usb-loader barebox-kindle-d01100.img + $ scripts/imx/imx-usb-loader barebox-kindle-d01200.img + Hint: keep the select button pressed down to get the barebox USB console. Barebox may be used as drop-in replacement for the shipped bootloader, when the imximg fits into 258048 bytes. When installing the barebox imximg on -the eMMC take care not to overwrite the vendor supplied serial numbers stored -on the eMMC. -e.g. for the D01100 just write the imx-header and the application section: -loady -t usbserial -memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.imx_header 1024 0 2048 -memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.self 4096 0 253952 +the eMMC, take care not to overwrite the vendor supplied serial numbers stored +on the eMMC, +e.g. for the D01100 just write the imx-header and the application section:: + + loady -t usbserial + memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.imx_header 1024 0 2048 + memcpy -b -s barebox-kindle-d01100.img -d /dev/disk0.boot0.self 4096 0 253952 Note: a USB serial ACM console will be launched by a barebox init script when + * the cursor select key is pressed during startup of model D01100 * the home button is pressed within a second after startup of model D01200. If you press the home button during startup, you will enter USB boot mode. @@ -47,12 +55,15 @@ power consumption to a few milliamps of battery power, after some minutes the power consumption is further reduced to about 550 microamps. Switching on iomux pullups may significantly reduce your standby-time. -Hints to reduce the build image size. +Hints to reduce the build image size +------------------------------------ + Note that a drop-in replacement barebox imximage must not exceed 258048 bytes since the space behind it is in use. Hence, don't build in drivers and FS -that are not required, e.g.: - NET, DISK_AHCI, DISK_INTF_PLATFORM_IDE, DISK_ATA, VIDEO, PWM, LED, - USB_STORAGE, USB_ULPI, NAND, MTD_UBI, FS_UBIFS, MFD_MC34704, MFD_MC9SDZ60, - MFD_STMPE, EEPROM_AT25, EEPROM_AT24, KEYBOARD_GPIO, PARTITION_DISK_EFI +that are not required, e.g. +``NET, DISK_AHCI, DISK_INTF_PLATFORM_IDE, DISK_ATA, VIDEO, PWM, LED, +USB_STORAGE, USB_ULPI, NAND, MTD_UBI, FS_UBIFS, MFD_MC34704, MFD_MC9SDZ60, +MFD_STMPE, EEPROM_AT25, EEPROM_AT24, KEYBOARD_GPIO, PARTITION_DISK_EFI`` + Also unselect support for other boards to get rid of their dependencies. -Further select IMAGE_COMPRESSION_XZKERN +Further select ``IMAGE_COMPRESSION_XZKERN``. -- 2.17.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
