From: Wolfgang Denk <wd@pollux.denx.de>
Date: Tue, 18 Apr 2006 09:05:03 +0000 (+0200)
Subject: MPC5200: enable snooping of DMA transactions on XLB even if no PCI
X-Git-Tag: LABEL_2006_04_18_1106
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=9bf86baaa3b35b25baa2d664e2f7f6cafad689ee;p=oweals%2Fu-boot.git

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.
---

diff --git a/CHANGELOG b/CHANGELOG
index becc55cd05..cbc18d9369 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 4a370ffea9..b7e00b3e24 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 1d903459e0..2f01d5ce99 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);