2014-02-13 1:56 GMT+01:00 Rommel G Custodio sessyargc+u-boot@gmail.com:
Dear Franck Jullien,
Franck Jullien <franck.jullien <at> gmail.com> writes:
Hi,
I'd like to know if I have understood it correctly.
When first time booting from NOR, the RCW and PBI must be written using the JTAG. The last instruction of the PBI must be a jump (0x13_8080) to the user's code (uboot here).
You should not need to bring out the JTAG.
The build process for other FSL boards that require RCW (i.e. P5040) can create a single binary that includes RCW, PBI, and u-boot.
BUT the T1040 right now does not have a build target that creates this binary! It seems FSL hasn't gotten about to creating it yet (not in mailine, not in patchworks, none in the FSL SDK).
Am I right ?
Best regards,
Franck.
All the best, Rommel
U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
I did see other platforms generates PBL images with RCW and PBI built-in. However, this is always with CONFIG_RAMBOOT_PBL set (SPI, NAND or SD-CARD boot). This is the memory map described in the t104xrdb/README file:
NOR Flash memory Map --------------------- 163 Start End Definition Size 164 0xEFF40000 0xEFFFFFFF u-boot (current bank) 768KB .... 177 0xE8000000 0xE801FFFF RCW (current bank) 128KB
For me, it means the RCW will not be included in the u-boot binary.
Franck.