MPC5200: enable snooping of DMA transactions on XLB even if no PCI

[karo-tx-uboot.git] / cpu / mpc5xxx / cpu_init.c

diff --git a/cpu/mpc5xxx/cpu_init.c b/cpu/mpc5xxx/cpu_init.c
index 3df005009ebca12113549a355db5c983e2d11f91..b7e00b3e244e4147be3811447fa312348419c078 100644 (file)
--- a/cpu/mpc5xxx/cpu_init.c
+++ b/cpu/mpc5xxx/cpu_init.c
@@ -24,6 +24,8 @@
 #include <common.h>
 #include <mpc5xxx.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 /*
  * Breath some life into the CPU...
  *
@@ -32,8 +34,6 @@
  */
 void cpu_init_f (void)
 {
-       DECLARE_GLOBAL_DATA_PTR;
-
        unsigned long addecr = (1 << 25); /* Boot_CS */
 #if defined(CFG_RAMBOOT) && defined(CONFIG_MGT5100)
        addecr |= (1 << 22); /* SDRAM enable */
@@ -152,6 +152,10 @@ void cpu_init_f (void)
        /* enable timebase */
        *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 13);
 
+       /* Enable snooping for RAM */
+       *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15);
+       *(vu_long *)(MPC5XXX_XLBARB + 0x70) = CFG_SDRAM_BASE | 0x1d;
+
 # if defined(CFG_IPBSPEED_133)
        /* Motorola reports IPB should better run at 133 MHz. */
        *(vu_long *)MPC5XXX_ADDECR |= 1;