source [find target/atheros_ar9331.cfg]
-proc ar9331_25mhz_pll_init {} {
- mww 0xb8050008 0x00018004 ;# bypass PLL; AHB_POST_DIV - ratio 4
- mww 0xb8050004 0x00000352 ;# 34000(ns)/40ns(25MHz) = 0x352 (850)
- mww 0xb8050000 0x40818000 ;# Power down control for CPU PLL
- ;# OUTDIV | REFDIV | DIV_INT
- mww 0xb8050010 0x001003e8 ;# CPU PLL Dither FRAC Register
- ;# (disabled?)
- mww 0xb8050000 0x00818000 ;# Power on | OUTDIV | REFDIV | DIV_INT
- mww 0xb8050008 0x00008000 ;# remove bypass;
- ;# AHB_POST_DIV - ratio 2
-}
-
-proc ar9331_ddr1_init {} {
- mww 0xb8000000 0x7fbc8cd0 ;# DDR_CONFIG - lots of DRAM confs
- mww 0xb8000004 0x9dd0e6a8 ;# DDR_CONFIG2 - more DRAM confs
-
- mww 0xb8000010 0x8 ;# Forces a PRECHARGE ALL cycle
- mww 0xb8000008 0x133 ;# mode reg: 0x133 - default
- mww 0xb8000010 0x1 ;# Forces an MRS update cycl
- mww 0xb800000c 0x2 ;# Extended mode register value.
- ;# default 0x2 - Reset to weak driver, DLL on
- mww 0xb8000010 0x2 ;# Forces an EMRS update cycle
- mww 0xb8000010 0x8 ;# Forces a PRECHARGE ALL cycle
- mww 0xb8000008 0x33 ;# mode reg: remove some bit?
- mww 0xb8000010 0x1 ;# Forces an MRS update cycl
- mww 0xb8000014 0x4186 ;# enable refres: bit(14) - set refresh rate
- mww 0xb800001c 0x8 ;# This register is used along with DQ Lane 0,
- ;# DQ[7:0], DQS_0
- mww 0xb8000020 0x9 ;# This register is used along with DQ Lane 1,
- ;# DQ[15:8], DQS_1.
- mww 0xb8000018 0xff ;# DDR read and capture bit mask.
- ;# Each bit represents a cycle of valid data.
-}
-
$_TARGETNAME configure -event reset-init {
ar9331_25mhz_pll_init
sleep 1
set _TARGETNAME $_CHIPNAME.cpu
target create $_TARGETNAME mips_m4k -endian big -chain-position $_TARGETNAME
+
+proc ar9331_25mhz_pll_init {} {
+ mww 0xb8050008 0x00018004 ;# bypass PLL; AHB_POST_DIV - ratio 4
+ mww 0xb8050004 0x00000352 ;# 34000(ns)/40ns(25MHz) = 0x352 (850)
+ mww 0xb8050000 0x40818000 ;# Power down control for CPU PLL
+ ;# OUTDIV | REFDIV | DIV_INT
+ mww 0xb8050010 0x001003e8 ;# CPU PLL Dither FRAC Register
+ ;# (disabled?)
+ mww 0xb8050000 0x00818000 ;# Power on | OUTDIV | REFDIV | DIV_INT
+ mww 0xb8050008 0x00008000 ;# remove bypass;
+ ;# AHB_POST_DIV - ratio 2
+}
+
+proc ar9331_ddr1_init {} {
+ mww 0xb8000000 0x7fbc8cd0 ;# DDR_CONFIG - lots of DRAM confs
+ mww 0xb8000004 0x9dd0e6a8 ;# DDR_CONFIG2 - more DRAM confs
+
+ mww 0xb8000010 0x8 ;# Forces a PRECHARGE ALL cycle
+ mww 0xb8000008 0x133 ;# mode reg: 0x133 - default
+ mww 0xb8000010 0x1 ;# Forces an MRS update cycl
+ mww 0xb800000c 0x2 ;# Extended mode register value.
+ ;# default 0x2 - Reset to weak driver, DLL on
+ mww 0xb8000010 0x2 ;# Forces an EMRS update cycle
+ mww 0xb8000010 0x8 ;# Forces a PRECHARGE ALL cycle
+ mww 0xb8000008 0x33 ;# mode reg: remove some bit?
+ mww 0xb8000010 0x1 ;# Forces an MRS update cycl
+ mww 0xb8000014 0x4186 ;# enable refres: bit(14) - set refresh rate
+ mww 0xb800001c 0x8 ;# This register is used along with DQ Lane 0,
+ ;# DQ[7:0], DQS_0
+ mww 0xb8000020 0x9 ;# This register is used along with DQ Lane 1,
+ ;# DQ[15:8], DQS_1.
+ mww 0xb8000018 0xff ;# DDR read and capture bit mask.
+ ;# Each bit represents a cycle of valid data.
+}