From 041cb6241fa97c4881dd19d79f783b2e077acd28 Mon Sep 17 00:00:00 2001 From: Sylvain Munaut Date: Fri, 6 Jan 2006 00:11:37 -0800 Subject: [PATCH] [PATCH] ppc32: Fix MPC52xx PCI init in cas the bootloader didn't do it We were counting on the bootloader to init some stuff, like get the bus out of reset and enable accesses. Signed-off-by: Sylvain Munaut Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc/syslib/mpc52xx_pci.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/ppc/syslib/mpc52xx_pci.c b/arch/ppc/syslib/mpc52xx_pci.c index 2c5e6ddaf2..313c96ec7e 100644 --- a/arch/ppc/syslib/mpc52xx_pci.c +++ b/arch/ppc/syslib/mpc52xx_pci.c @@ -154,9 +154,12 @@ static struct pci_ops mpc52xx_pci_ops = { static void __init mpc52xx_pci_setup(struct mpc52xx_pci __iomem *pci_regs) { + u32 tmp; /* Setup control regs */ - /* Nothing to do afaik */ + tmp = in_be32(&pci_regs->scr); + tmp |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + out_be32(&pci_regs->scr, tmp); /* Setup windows */ out_be32(&pci_regs->iw0btar, MPC52xx_PCI_IWBTAR_TRANSLATION( @@ -197,13 +200,12 @@ mpc52xx_pci_setup(struct mpc52xx_pci __iomem *pci_regs) /* Not necessary and can be a bad thing if for example the bootloader is displaying a splash screen or ... Just left here for documentation purpose if anyone need it */ -#if 0 - u32 tmp; tmp = in_be32(&pci_regs->gscr); +#if 0 out_be32(&pci_regs->gscr, tmp | MPC52xx_PCI_GSCR_PR); udelay(50); - out_be32(&pci_regs->gscr, tmp); #endif + out_be32(&pci_regs->gscr, tmp & ~MPC52xx_PCI_GSCR_PR); } static void -- 2.39.2