summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
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
parentcf48eb9abd76e5a056937a4e49be094826026abc (diff)
downloadu-boot-imx-8419c013048b1f15f3fa2fc7c0463d860a04ee3e.zip
u-boot-imx-8419c013048b1f15f3fa2fc7c0463d860a04ee3e.tar.gz
u-boot-imx-8419c013048b1f15f3fa2fc7c0463d860a04ee3e.tar.bz2
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.
-rw-r--r--CHANGELOG4
-rw-r--r--cpu/mpc5xxx/cpu_init.c4
-rw-r--r--cpu/mpc5xxx/pci_mpc5200.c4
3 files changed, 8 insertions, 4 deletions
diff --git a/CHANGELOG b/CHANGELOG
index becc55c..cbc18d9 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,10 @@
Changes since U-Boot 1.1.4:
======================================================================
+* 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.
+
* Some code cleanup
* Fix dbau1x00 boards broken by dbau1550 patch
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;
diff --git a/cpu/mpc5xxx/pci_mpc5200.c b/cpu/mpc5xxx/pci_mpc5200.c
index 1d90345..2f01d5c 100644
--- a/cpu/mpc5xxx/pci_mpc5200.c
+++ b/cpu/mpc5xxx/pci_mpc5200.c
@@ -135,10 +135,6 @@ void pci_mpc5xxx_init (struct pci_controller *hose)
*(vu_long *)MPC5XXX_PCI_BAR1 = CONFIG_PCI_MEMORY_BUS | (1 << 3);
*(vu_long *)MPC5XXX_PCI_TBATR1 = CONFIG_PCI_MEMORY_PHYS | 1;
- /* Enable snooping for RAM */
- *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (1 << 15);
- *(vu_long *)(MPC5XXX_XLBARB + 0x70) = CONFIG_PCI_MEMORY_PHYS | 0x1d;
-
/* Park XLB on PCI */
*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~((7 << 8) | (3 << 5));
*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (3 << 8) | (3 << 5);