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[PATCH] ppc32: Fix MPC52xx PCI init in cas the bootloader didn't do it

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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 <tnt@246tNt.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Sylvain Munaut 2006-01-06 00:11:37 -08:00 committed by Linus Torvalds
parent db674ed450
commit 041cb6241f
1 changed files with 6 additions and 4 deletions
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10
arch/ppc/syslib/mpc52xx_pci.c
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@ -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