From 7a6bb2622692495d1b7445a3e8c257601b803b02 Mon Sep 17 00:00:00 2001 From: Per Andersson Date: Mon, 11 Aug 2008 12:00:52 +0200 Subject: [PATCH] [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 Signed-off-by: Lennert Buytenhek --- arch/arm/mach-orion5x/common.h | 1 + arch/arm/mach-orion5x/kurobox_pro-setup.c | 4 +++- arch/arm/mach-orion5x/pci.c | 13 ++++++++++--- 3 files changed, 14 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h index e75bd7004b94..0bd195551a27 100644 --- a/arch/arm/mach-orion5x/common.h +++ b/arch/arm/mach-orion5x/common.h @@ -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); diff --git a/arch/arm/mach-orion5x/kurobox_pro-setup.c b/arch/arm/mach-orion5x/kurobox_pro-setup.c index cb72f1bb9cb7..e321ec331839 100644 --- a/arch/arm/mach-orion5x/kurobox_pro-setup.c +++ b/arch/arm/mach-orion5x/kurobox_pro-setup.c @@ -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; } diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c index fbceecc4b7ec..a7b7d77b1b09 100644 --- a/arch/arm/mach-orion5x/pci.c +++ b/arch/arm/mach-orion5x/pci.c @@ -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; -- 2.20.1