On 05/15/2014 04:13 AM, Prabhakar Kushwaha wrote: > In the earlier patches, the SPL/TPL fraamework was introduced. > For SD/SPI flash booting way, we introduce the SPL to enable a loader stub. > The > SPL was loaded by the code from the internal on-chip ROM. The SPL initializes > the DDR according to the SPD and loads the final uboot image into DDR, then > jump to the DDR to begin execution. > > For NAND booting way, the nand SPL has size limitation on some board(e.g. > P1010RDB), it can not be more than 4KB, we can call it "minimal SPL", So the > dynamic DDR driver doesn't fit into this minimum SPL. We added the TPL that is > loaded by the the minimal SPL. The TPL initializes the DDR according to the > SPD > and loads the final uboot image into DDR,then jump to the DDR to begin > execution. > > This patch enabled SPL/TPL for P1_P2_RDB to support starting from NAND/SD/SPI > flash with SPL framework and initializing the DDR according to SPD in the > SPL/TPL. > Because the minimal SPL load the TPL to L2 SRAM and the jump to the L2 SRAM to > execute, so the section .resetvec is no longer needed. > > Signed-off-by: Prabhakar Kushwaha <prabha...@freescale.com> > --- > Changes for v2: Incroporated York' comments
Applied to u-boot-mpc85xx/master. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
