From a575b807172ca7d8850e6e979c8e83d4258e8c43 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sun, 23 Oct 2005 17:23:21 +1000 Subject: powerpc: Run on old powermacs. Old powermacs have a number of differences from current machines: - there is no interrupt tree in the device tree, just interrupt or AAPL,interrupt properties - the chosen node in the device tree is called /chosen@0 - the OF claim method doesn't map the memory, so we have to do an explicit map call as well - there is no /chosen/cpu property on SMP machines - the NVRAM isn't structured as a set of partitions. This adapts the merged powermac support code to cope with these issues. Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/powermac/setup.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/platforms/powermac/setup.c') diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 50f5dd78790..908e4921bac 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -225,7 +225,7 @@ int find_via_pmu(void) return 0; printk("WARNING ! Your machine is PMU-based but your kernel\n"); printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); - return; + return 0; } #endif @@ -293,7 +293,7 @@ static void __init l2cr_init(void) void __init pmac_setup_arch(void) { - struct device_node *cpu; + struct device_node *cpu, *ic; int *fp; unsigned long pvr; @@ -319,6 +319,12 @@ void __init pmac_setup_arch(void) of_node_put(cpu); } + /* See if newworld or oldworld */ + ic = of_find_node_by_name(NULL, "interrupt-controller"); + pmac_newworld = (ic != NULL); + if (ic) + of_node_put(ic); + /* Lookup PCI hosts */ pmac_pci_init(); -- cgit v1.2.3