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| author | Wolfgang Denk <wd@pollux.denx.de> | 2006-04-18 11:05:03 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@pollux.denx.de> | 2006-04-18 11:05:03 +0200 |
| commit | 8419c013048b1f15f3fa2fc7c0463d860a04ee3e (patch) | |
| tree | 216f34989d4edfc76963ef09a4e3038ceac1018a | |
| parent | cf48eb9abd76e5a056937a4e49be094826026abc (diff) | |
| download | u-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-- | CHANGELOG | 4 | ||||
| -rw-r--r-- | cpu/mpc5xxx/cpu_init.c | 4 | ||||
| -rw-r--r-- | cpu/mpc5xxx/pci_mpc5200.c | 4 |
3 files changed, 8 insertions, 4 deletions
@@ -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); |