Changing the partition scheme may affect the boot loader update capability and / or the kernel command line parameters!
Unpartitioned area [sector size = 512 byte, total size = 0x2000 sectors (4 MiB)]
Sector numbers are in hexadecimal (as expected by U-Boot's mmc command), size is given in hex (=number of sectors) and dezimal (= size in byte).
| Sectors | Size | ||||
|---|---|---|---|---|---|
| First | Last | Sectors | Byte | Contents | |
| 0x0000 | 0x0000 | 0x0001 (512 B) | MBR | ||
| 0x0001 | 0x0001 | 0x0001 (512 B) | reserved 1) | ||
| 0x0002 | 0x07ff | 0x07fe (1023 KiB) | u-boot | ||
| 0x0800 | 0x080f | 0x0010 (8 KiB | primary u-boot environment 2) | ||
| 0x0810 | 0x081f | 0x0010 (8 KiB | secondary u-boot environment 2) | ||
| 0x0820 | 0x0fff | 0x07e0 (1008 KiB | unused | ||
| 0x1000 | 0x17ff | 0x0800 (1 MiB | device tree blob | ||
| 0x1800 | 0x1fff | 0x0800 (1 MiB | unused | ||
| 1) for redundant Boot Support, for details see CPU reference Manual 2) redundant environment, cf. CONFIG_ENV_*_REDUND in U-Boot README | |||||
| Start … End | Size (sectors / byte) | Contents |
|---|---|---|
| 0x0000 … 0x0000 | 0x0001 sector / 512 B | MBR |
| 0x0001 … 0x0001 | 0x0001 sector / 512 B | reserved 1) |
| 0x0002 … 0x07ff | 0x07fe sectors / 1023 KiB | u-boot |
| 0x0800 … 0x080f | 0x0010 sectors / 8 KiB | primary u-boot environment 2) |
| 0x0810 … 0x081f | 0x0010 sectors / 8 KiB | secondary u-boot environment 2) |
| 0x0820 … 0x0fff | 0x07e0 sectors / 1008 KiB | unused |
| 0x1000 … 0x17ff | 0x0800 sectors / 1 MiB | device tree blob |
| 0x1800 … 0x1fff | 0x0800 sectors / 1 MiB | unused |
| 1) for redundant Boot Support, for details see CPU reference Manual 2) redundant environment, cf. CONFIG_ENV_*_REDUND in U-Boot README |
||
| Partitioned area: 0x106000 sectors / 520+ MiB | ||
| Partition | Size | Contents |
| 1 | 4 MiB | Kernel image 1) |
| 2 | 256 MiB | root FS |
| 3 | 256 MiB | Spare, not formatted |
| 4 | —- | —- |
| 1) raw partition | ||
The partition scheme is defined using the config file config/platform-tq-mba6x/config/uboot-hd.config. The creation of the image is controlled using the PTXdist packages image-uboot-tqma6<q|s>-hd.
To create the image the genimage host tool is used. This tool is automatically selected and built. You can find the build directory under <BSPROOT>/platform-MBa6x/build-host/genimage. There is also a README file documenting how to use this tool.
Sector size = 64 KiB
| First sector | Last sector | Size (sectors) | Size (byte) | Contents |
|---|---|---|---|---|
| 0x00 | 0x07 | 0x08 sectors | 512 KiB | U-Boot 1) |
| 0x08 | 0x08 | 0x01 sector | 64 KiB | environment0 |
| 0x09 | 0x09 | 0x01 sector | 64 KiB | environment1 |
| 0x0a | 0x0a | 0x01 sector | 64 KiB | environment1 |
| 0x0b | 0x0f | 0x05 sectors | 372 KiB | devicetree |
| 0x10 | 0x70 | 0x60 sectors | 6 MiB | Kernel |
| 1) U-Boot image has to be written at address 0x400, cf. CPU Reference Manual for details | ||||
| First | Last | Size (sectors) | Size (byte) | Contents |
|---|---|---|---|---|
| 0 | 7 | 8 sectors | 512 KiB | U-Boot 1) |
| 8 | 8 | 1 sector | 64 KiB | environment0 |
| 9 | 9 | 1 sector | 64 KiB | environment1 |
| 10 | 14 | 5 sectors | 320 KiB | devicetree |
| 15 | 110 | 96 sectors | 6 MiB | Kernel |
| 1) U-Boot image has to be written at address 0x400, cf. CPU Reference Manual for details | ||||