Hey all,
I recently got a Renesas Porter board, obviously one of the first things i wanted to do is replace its u-boot with a somewhat more recent version.
Unfortunately upstream u-boot simply hangs during initialisation. Some printf debugging showed that the board_init_r test sequence is successful, but the board_init_f sequence never starts?
Curiously, u-boot master *does* starts when chainloaded from the NOR loader (iotw tftp new u-boot to the expected CONFIG_SYS_TEXT_BASE and jump into it). Which makes me suspect there is some initialisation missing.
FWIW, to prevent toolchain issues, i've both tried gcc 4.9 (as downloaded by buildman) as well as the gcc 5 cross-compilers from Debian. I've also updated the QSPI loader with the latest one from the elinux bage (PORTER_SPI_LOADER_V019_DDR3L.bin)
Current u-boot output:
PORTER SPI_LOADER(DDR3L) V0.19 2015.02.12 DEVICE S25FL512
U-Boot 2015.10-rc3-00297-g1a9c229 (Sep 25 2015 - 16:25:46 +0200)
CPU: Renesas Electronics R8A7791 rev 2.0 Board: Porter I2C: ready DRAM: 1 GiB
(At this point the board hangs)