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authorYork Sun <yorksun@freescale.com>2013-09-30 09:22:09 -0700
committerYork Sun <yorksun@freescale.com>2013-11-25 11:43:43 -0800
commit5614e71b4956c579cd4419b958b33fa6316eaa92 (patch)
treef75d1d531814dbbe0ff9d65f28cc050a73a8f7de /README
parentac6880782d8f369b7121488e8407ae6ddcf2b9ff (diff)
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Driver/DDR: Moving Freescale DDR driver to a common driver
Freescale DDR driver has been used for mpc83xx, mpc85xx, mpc86xx SoCs. The similar DDR controllers will be used for ARM-based SoCs. Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'README')
-rw-r--r--README41
1 files changed, 36 insertions, 5 deletions
diff --git a/README b/README
index c97ff0a..49f4b3a 100644
--- a/README
+++ b/README
@@ -423,16 +423,47 @@ The following options need to be configured:
CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT
This value denotes start offset of DSP CCSR space.
- CONFIG_SYS_FSL_DDR_EMU
- Specify emulator support for DDR. Some DDR features such as
- deskew training are not available.
-
- Generic CPU options:
CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN
Defines the endianess of the CPU. Implementation of those
values is arch specific.
+ CONFIG_SYS_FSL_DDR
+ Freescale DDR driver in use. This type of DDR controller is
+ found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core
+ SoCs.
+
+ CONFIG_SYS_FSL_DDR_ADDR
+ Freescale DDR memory-mapped register base.
+
+ CONFIG_SYS_FSL_DDR_EMU
+ Specify emulator support for DDR. Some DDR features such as
+ deskew training are not available.
+
+ CONFIG_SYS_FSL_DDRC_GEN1
+ Freescale DDR1 controller.
+
+ CONFIG_SYS_FSL_DDRC_GEN2
+ Freescale DDR2 controller.
+
+ CONFIG_SYS_FSL_DDRC_GEN3
+ Freescale DDR3 controller.
+
+ CONFIG_SYS_FSL_DDR1
+ Board config to use DDR1. It can be enabled for SoCs with
+ Freescale DDR1 or DDR2 controllers, depending on the board
+ implemetation.
+
+ CONFIG_SYS_FSL_DDR2
+ Board config to use DDR2. It can be eanbeld for SoCs with
+ Freescale DDR2 or DDR3 controllers, depending on the board
+ implementation.
+
+ CONFIG_SYS_FSL_DDR3
+ Board config to use DDR3. It can be enabled for SoCs with
+ Freescale DDR3 controllers.
+
- Intel Monahans options:
CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO
@@ -3182,7 +3213,7 @@ FIT uImage format:
CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
Set for the SPL on PPC mpc8xxx targets, support for
- arch/powerpc/cpu/mpc8xxx/ddr/libddr.o in SPL binary.
+ drivers/ddr/fsl/libddr.o in SPL binary.
CONFIG_SPL_COMMON_INIT_DDR
Set for common ddr init with serial presence detect in