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authorWolfgang Denk <wd@pollux.denx.de>2006-04-18 11:05:03 +0200
committerWolfgang Denk <wd@pollux.denx.de>2006-04-18 11:05:03 +0200
commit8419c013048b1f15f3fa2fc7c0463d860a04ee3e (patch)
tree216f34989d4edfc76963ef09a4e3038ceac1018a /cpu/mpc5xxx/cpu_init.c
parentcf48eb9abd76e5a056937a4e49be094826026abc (diff)
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MPC5200: enable snooping of DMA transactions on XLB even if no PCI
is configured; othrwise DMA accesses aren't cache coherent which causes for example USB to fail.
Diffstat (limited to 'cpu/mpc5xxx/cpu_init.c')
-rw-r--r--cpu/mpc5xxx/cpu_init.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/cpu/mpc5xxx/cpu_init.c b/cpu/mpc5xxx/cpu_init.c
index 4a370ff..b7e00b3 100644
--- a/cpu/mpc5xxx/cpu_init.c
+++ b/cpu/mpc5xxx/cpu_init.c
@@ -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;