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-rw-r--r--board/dbau1x00/memsetup.S118
1 files changed, 118 insertions, 0 deletions
diff --git a/board/dbau1x00/memsetup.S b/board/dbau1x00/memsetup.S
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+/* Memory sub-system initialization code */
+
+#include <config.h>
+#include <version.h>
+#include <asm/regdef.h>
+#include <asm/au1x00.h>
+
+ .globl memsetup
+memsetup:
+ /* First setup pll:s to make serial work ok */
+ /* We have a 12 MHz crystal */
+ li t0, SYS_CPUPLL
+ li t1, 0x21 /* 396 MHz */
+ sw t1, 0(t0)
+ sync
+ nop
+
+ /* Setup AUX PLL */
+ li t0, SYS_AUXPLL
+ li t1, 8 /* 96 MHz */
+ sw t1, 0(t0) /* aux pll */
+ sync
+
+/* SDCS 0,1 SDRAM */
+ li t0, MEM_SDMODE0
+ li t1, 0x005522AA
+ sw t1, 0(t0)
+
+ li t0, MEM_SDMODE1
+ li t1, 0x005522AA
+ sw t1, 0(t0)
+
+ li t0, MEM_SDADDR0
+ li t1, 0x001003F8
+ sw t1, 0(t0)
+
+
+ li t0, MEM_SDADDR1
+ li t1, 0x001023F8
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDREFCFG
+ li t1, 0x64000C24 /* Disable */
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDPRECMD
+ sw zero, 0(t0)
+ sync
+
+ li t0, MEM_SDAUTOREF
+ sw zero, 0(t0)
+ sync
+ sw zero, 0(t0)
+ sync
+
+ li t0, MEM_SDREFCFG
+ li t1, 0x66000C24 /* Enable */
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDWRMD0
+ li t1, 0x00000033
+ sw t1, 0(t0)
+ sync
+
+ li t0, MEM_SDWRMD1
+ li t1, 0x00000033
+ sw t1, 0(t0)
+ sync
+
+ /* Static memory controller */
+
+ /* RCE0 AMD 29LV640M MirrorBit Flash */
+ li t0, MEM_STCFG0
+ li t1, 0x00000003
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME0
+ li t1, 0x22080b20
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR0
+ li t1, 0x11E03F80
+ sw t1, 0(t0)
+
+ /* RCE1 CPLD Board Logic */
+ li t0, MEM_STCFG1
+ li t1, 0x00000080
+ sw t1, 0(t0)
+
+ li t0, MEM_STTIME1
+ li t1, 0x22080a20
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR1
+ li t1, 0x10c03f00
+ sw t1, 0(t0)
+
+ /* RCE3 PCMCIA 250ns */
+ li t0, MEM_STCFG3
+ li t1, 0x00000002
+ sw t1, 0(t0)
+
+
+ li t0, MEM_STTIME3
+ li t1, 0x280E3E07
+ sw t1, 0(t0)
+
+ li t0, MEM_STADDR3
+ li t1, 0x10000000
+ sw t1, 0(t0)
+
+ sync
+
+ j ra
+ nop