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authorGrant Likely <grant.likely@secretlab.ca>2010-10-20 11:45:14 -0600
committerGrant Likely <grant.likely@secretlab.ca>2010-10-21 11:10:10 -0600
commit32c97689c46b272302053778f1a6c2facb0e220c (patch)
tree46617f9d6feda43ca5bc142511016c06125a52ec /arch
parent7096d0422153ffcc2264eef652fc3a7bca3e6d3c (diff)
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')
-rw-r--r--arch/microblaze/kernel/prom.c5
-rw-r--r--arch/powerpc/kernel/prom.c12
2 files changed, 10 insertions, 7 deletions
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index 427b13b4740..bacbd3d41ec 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -42,11 +42,6 @@
#include <asm/sections.h>
#include <asm/pci-bridge.h>
-void __init early_init_dt_scan_chosen_arch(unsigned long node)
-{
- /* No Microblaze specific code here */
-}
-
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
memblock_add(base, size);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index fed9bf6187d..e296aae63c6 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();