summaryrefslogtreecommitdiff
path: root/doc/README.fsl-ddr
AgeCommit message (Collapse)Author
2010-10-20Add memory test feature for mpc85xx POST.York Sun
The memory test is performed after DDR initialization when U-boot stills runs in flash and cache. On recent mpc85xx platforms, the total memory can be more than 2GB. To cover whole memory, it needs be mapped 2GB at a time using a sliding TLB window. After the testing, DDR is remapped with up to 2GB memory from the lowest address as normal. If memory test fails, DDR DIMM SPD and DDR controller registers are dumped for further debugging. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-26powerpc/8xxx: Enabled address hashing for 85xxyork
For 85xx silicon which supports address hashing, it can be activated by hwconfig. Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Fix bug in memctrl interleaving & bank interleaving on cs0~cs4york
Verified on MPC8641HPCN with four DDR2 dimms. Each dimm has dual rank with 512MB each rank. Also check dimm size and rank size for memory controller interleaving Signed-off-by: York Sun <yorksun@freescale.com>
2010-07-26powerpc/8xxx: Enabled hwconfig for memory interleavingKumar Gala
Replace environmental variables memctl_intlv_ctl and ba_intlv_ctl with hwconfig parameters. The syntax is setenv hwconfig "fsl_ddr:ctlr_intlv=<mode>,bank_intlv=<mode>" The mode values for memory controller interleaving are cacheline page bank superbank The mode values for bank interleaving are cs0_cs1 cs2_cs3 cs0_cs1_and_cs2_cs3 cs0_cs1_cs2_cs3 Signed-off-by: York Sun <yorksun@freescale.com>
2008-10-18Check DDR interleaving modeHaiying Wang
* Check DDR interleaving mode from environment by reading memctl_intlv_ctl and ba_intlv_ctl. * Print DDR interleaving mode information * Add doc/README.fsl-ddr to describe the interleaving setting Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>