diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2010-07-14 10:04:21 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-07-26 13:16:08 -0500 |
| commit | 79e4e6480b359cb28129cecfa2cae0ef9cccf803 (patch) | |
| tree | 45345be233f602736fd7df42c579b1b3abab6768 /doc | |
| parent | fd3c9befa83eecf6e7c6ef03c501159fbf754143 (diff) | |
powerpc/8xxx: Enabled hwconfig for memory interleaving
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>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.fsl-ddr | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/doc/README.fsl-ddr b/doc/README.fsl-ddr index 9c2224fea14..6e4f6e9244b 100644 --- a/doc/README.fsl-ddr +++ b/doc/README.fsl-ddr @@ -32,38 +32,41 @@ The ways to configure the ddr interleaving mode 1. In board header file(e.g.MPC8572DS.h), add default interleaving setting under "CONFIG_EXTRA_ENV_SETTINGS", like: #define CONFIG_EXTRA_ENV_SETTINGS \ - "memctl_intlv_ctl=2\0" \ + "hwconfig=fsl_ddr:ctlr_intlv=bank" \ ...... 2. Run u-boot "setenv" command to configure the memory interleaving mode. Either numerical or string value is accepted. # disable memory controller interleaving - setenv memctl_intlv_ctl + setenv hwconfig "fsl_ddr:ctlr_intlv=null" # cacheline interleaving - setenv memctl_intlv_ctl 0 or setenv memctl_intlv_ctl cacheline + setenv hwconfig "fsl_ddr:ctlr_intlv=cacheline" # page interleaving - setenv memctl_intlv_ctl 1 or setenv memctl_intlv_ctl page + setenv hwconfig "fsl_ddr:ctlr_intlv=page" # bank interleaving - setenv memctl_intlv_ctl 2 or setenv memctl_intlv_ctl bank + setenv hwconfig "fsl_ddr:ctlr_intlv=bank" # superbank - setenv memctl_intlv_ctl 3 or setenv memctl_intlv_ctl superbank + setenv hwconfig "fsl_ddr:ctlr_intlv=superbank" # disable bank (chip-select) interleaving - setenv ba_intlv_ctl + setenv hwconfig "fsl_ddr:bank_intlv=null" # bank(chip-select) interleaving cs0+cs1 - setenv ba_intlv_ctl 0x40 or setenv ba_intlv_ctl cs0_cs1 + setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1" # bank(chip-select) interleaving cs2+cs3 - setenv ba_intlv_ctl 0x20 or setenv ba_intlv_ctl cs2_cs3 + setenv hwconfig "fsl_ddr:bank_intlv=cs2_cs3" # bank(chip-select) interleaving (cs0+cs1) and (cs2+cs3) (2x2) - setenv ba_intlv_ctl 0x60 or setenv ba_intlv_ctl cs0_cs1_and_cs2_cs3 + setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1_and_cs2_cs3" # bank(chip-select) interleaving (cs0+cs1+cs2+cs3) (4x1) - setenv ba_intlv_ctl 0x04 or setenv ba_intlv_ctl cs0_cs1_cs2_cs3 + setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1_cs2_cs3" + + The above memory controller interleaving and bank interleaving can be mixed. The syntax is + setenv hwconfig "fsl_ddr:ctlr_intlv=cacheline,bank_intlv=cs0_cs1" |