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[ARM] Orion: Fix boot crash on Kurobox Pro 

The Kurobox Pro crashes when any of the PCI controller registers
are accessed.  This patch adds a function to the Orion PCI handling
code that board support code can call to disable enumerating the
PCI bus entirely, and makes the Kurobox Pro PCI-related init code
call this function.

Signed-off-by: Per Andersson <avtobiff@gmail.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
This commit is contained in:
Per Andersson 2008-08-11 12:00:52 +02:00 committed by Nicolas Pitre
parent 6a55617ed5
commit 7a6bb26226
3 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-orion5x/common.h
View File

@ -41,6 +41,7 @@ struct pci_bus;
struct pci_sys_data;
void orion5x_pcie_id(u32 *dev, u32 *rev);
void orion5x_pci_disable(void);
void orion5x_pci_set_cardbus_mode(void);
int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys);

4
arch/arm/mach-orion5x/kurobox_pro-setup.c
View File

@ -146,8 +146,10 @@ static struct hw_pci kurobox_pro_pci __initdata = {
static int __init kurobox_pro_pci_init(void)
{
if (machine_is_kurobox_pro())
if (machine_is_kurobox_pro()) {
orion5x_pci_disable();
pci_common_init(&kurobox_pro_pci);
}
return 0;
}

13
arch/arm/mach-orion5x/pci.c
View File

@ -541,6 +541,13 @@ static void __devinit rc_pci_fixup(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
static int orion5x_pci_disabled __initdata;
void __init orion5x_pci_disable(void)
{
orion5x_pci_disabled = 1;
}
void __init orion5x_pci_set_cardbus_mode(void)
{
orion5x_pci_cardbus_mode = 1;
@ -553,7 +560,7 @@ int __init orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys)
if (nr == 0) {
orion_pcie_set_local_bus_nr(PCIE_BASE, sys->busnr);
ret = pcie_setup(sys);
} else if (nr == 1) {
} else if (nr == 1 && !orion5x_pci_disabled) {
orion5x_pci_set_bus_nr(sys->busnr);
ret = pci_setup(sys);
}
@ -567,7 +574,7 @@ struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys
if (nr == 0) {
bus = pci_scan_bus(sys->busnr, &pcie_ops, sys);
} else if (nr == 1) {
} else if (nr == 1 && !orion5x_pci_disabled) {
bus = pci_scan_bus(sys->busnr, &pci_ops, sys);
} else {
bus = NULL;
@ -584,7 +591,7 @@ int __init orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
/*
* PCIe endpoint?
*/
if (bus < orion5x_pci_local_bus_nr())
if (orion5x_pci_disabled || bus < orion5x_pci_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
return -1;