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| author | Grant Likely <grant.likely@secretlab.ca> | 2010-10-20 11:45:14 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-10-21 11:10:10 -0600 |
| commit | 32c97689c46b272302053778f1a6c2facb0e220c (patch) | |
| tree | 46617f9d6feda43ca5bc142511016c06125a52ec /arch/powerpc/kernel/prom.c | |
| parent | 7096d0422153ffcc2264eef652fc3a7bca3e6d3c (diff) | |
| download | lwn-32c97689c46b272302053778f1a6c2facb0e220c.tar.gz lwn-32c97689c46b272302053778f1a6c2facb0e220c.zip | |
of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
This patch refactors the early init parsing of the chosen node so that
architectures aren't forced to provide an empty implementation of
early_init_dt_scan_chosen_arch. Instead, if an architecture wants to
do something different, it can either use a wrapper function around
early_init_dt_scan_chosen(), or it can replace it altogether.
This patch was written in preparation to adding device tree support to
both x86 ad MIPS.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: David Daney <ddaney@caviumnetworks.com>
Diffstat (limited to 'arch/powerpc/kernel/prom.c')
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index fed9bf6187d1..e296aae63c60 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -363,10 +363,15 @@ static int __init early_init_dt_scan_cpus(unsigned long node, return 0; } -void __init early_init_dt_scan_chosen_arch(unsigned long node) +int __init early_init_dt_scan_chosen_ppc(unsigned long node, const char *uname, + int depth, void *data) { unsigned long *lprop; + /* Use common scan routine to determine if this is the chosen node */ + if (early_init_dt_scan_chosen(node, uname, depth, data) == 0) + return 0; + #ifdef CONFIG_PPC64 /* check if iommu is forced on or off */ if (of_get_flat_dt_prop(node, "linux,iommu-off", NULL) != NULL) @@ -398,6 +403,9 @@ void __init early_init_dt_scan_chosen_arch(unsigned long node) if (lprop) crashk_res.end = crashk_res.start + *lprop - 1; #endif + + /* break now */ + return 1; } #ifdef CONFIG_PPC_PSERIES @@ -679,7 +687,7 @@ void __init early_init_devtree(void *params) * device-tree, including the platform type, initrd location and * size, TCE reserve, and more ... */ - of_scan_flat_dt(early_init_dt_scan_chosen, NULL); + of_scan_flat_dt(early_init_dt_scan_chosen_ppc, NULL); /* Scan memory nodes and rebuild MEMBLOCKs */ memblock_init(); |