On Mon, Dec 8, 2014 at 11:30 AM, Lennart Sorensen <[email protected]> wrote: > On Sat, Dec 06, 2014 at 01:07:35PM -0600, Robert Nelson wrote: >> omap bootrom's with the introduction of the omap4 can be dd'ed liked >> sunxi/i.mx5/5.. >> >> dd if=MLO of=/dev/sdX count=1 seek=1 conv=notrunc bs=128k >> dd if=u-boot.img of=/dev/sdX count=2 seek=1 conv=notrunc bs=384k > > omap5 seems to have the MLO at 512 bytes from the start, so 128k would > certainly not match in that case. More common seems to be the use of a > "boot" partition with the files instead.
Well from: http://www.ti.com/lit/pdf/swpu249 SWPU249AB OMAP543x Technical Reference Manual (non public, so you have to register with ti, etc..) Page 5959: <quote> 28.3.7.6.4 Read Sector Procedure The contents of an eMMC or SD card may be formatted as raw binary (referred to as Raw(UDA) or within a FAT file system. The ROM Code reads out sectors from raw image or the booting file within the file system and boots from it. • Raw mode In Raw(UDA) mode, an image can be at one of the four consecutive locations in the main area: offset 0x0 (0 KiB)/0x20000 (128 KiB)/0x40000 (256 KiB)/0x60000 (384 KiB). For this reason, the size of a booting image must not exceed 128 KiB. However, a device with an image greater than 128 KiB can be flash starting at one of the aforementioned locations. Therefore, the ROM code does not check the image size. The only drawback is that the image crosses the subsequent image boundary. Raw mode is detected by reading sectors 0, 256, 512, and 768. The content of these sectors is verified for the presence of a TOC structure. For a GP device, a GP header must be located at the beginning of the booting image, as described in Section 28.3.8.2, Configuration Header. Image data is read directly from continuous sectors of a card. If raw mode is not detected, file system mode is assumed. </quote> PS... this dd locations also work for the upcoming AM572x BeagleBoard-x15. (personally tested on the alpha boards) http://www.elinux.org/Beagleboard:BeagleBoard-X15 So all: omap4 omap5 am335x am43xx am57x Regards, -- Robert Nelson http://www.rcn-ee.com/ -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/caochtygb92skm_juqbiqqfmythy1mpahsgiha+sefhqjbdp...@mail.gmail.com
