diff options
Diffstat (limited to 'cpu/ppc4xx/4xx_pci.c')
| -rw-r--r-- | cpu/ppc4xx/4xx_pci.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/cpu/ppc4xx/4xx_pci.c b/cpu/ppc4xx/4xx_pci.c index fa521f0..40017f4 100644 --- a/cpu/ppc4xx/4xx_pci.c +++ b/cpu/ppc4xx/4xx_pci.c @@ -478,6 +478,26 @@ void pci_init_board(void) static struct pci_controller ppc440_hose = {0}; +/* + * This routine is called to determine if a pci scan should be + * performed. With various hardware environments (especially cPCI and + * PPMC) it's insufficient to depend on the state of the arbiter enable + * bit in the strap register, or generic host/adapter assumptions. + * + * Rather than hard-code a bad assumption in the general 440 code, the + * 440 pci code requires the board to decide at runtime. + * + * Return 0 for adapter mode, non-zero for host (monarch) mode. + * + * Weak default implementation: "Normal" boards implement the PCI + * host functionality. This can be overridden for PCI adapter boards. + */ +int __is_pci_host(struct pci_controller *hose) +{ + return 1; +} +int is_pci_host(struct pci_controller *hose) + __attribute__((weak, alias("__is_pci_host"))); int pci_440_init (struct pci_controller *hose) { |