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authorGrant Likely <grant.likely@secretlab.ca>2009-12-10 23:42:21 -0700
committerGrant Likely <grant.likely@secretlab.ca>2009-12-10 23:42:21 -0700
commit86e032213424958b45564d0cc96b3316641a49d3 (patch)
tree34b9f5ddd49180a558a325b9ccb47140f5cc7cbd /drivers
parent0f0b56c3f2df4a083fc9e934266e5bab1710e286 (diff)
downloadlinux-86e032213424958b45564d0cc96b3316641a49d3.tar.bz2
of/flattree: merge early_init_dt_scan_chosen()
Merge common code between PowerPC and Microblaze. This patch splits the arch-specific stuff out into a new function, early_init_dt_scan_chosen_arch(). Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/of/fdt.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index ebce509b0886..616a4767a950 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -15,6 +15,10 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
+#ifdef CONFIG_PPC
+#include <asm/machdep.h>
+#endif /* CONFIG_PPC */
+
int __initdata dt_root_addr_cells;
int __initdata dt_root_size_cells;
@@ -440,6 +444,40 @@ u64 __init dt_mem_next_cell(int s, u32 **cellp)
return of_read_number(p, s);
}
+int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ unsigned long l;
+ char *p;
+
+ pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
+
+ if (depth != 1 ||
+ (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
+ return 0;
+
+ early_init_dt_check_for_initrd(node);
+
+ /* Retreive command line */
+ p = of_get_flat_dt_prop(node, "bootargs", &l);
+ if (p != NULL && l > 0)
+ strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
+
+#ifdef CONFIG_CMDLINE
+#ifndef CONFIG_CMDLINE_FORCE
+ if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
+#endif
+ strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#endif /* CONFIG_CMDLINE */
+
+ early_init_dt_scan_chosen_arch(node);
+
+ pr_debug("Command line is: %s\n", cmd_line);
+
+ /* break now */
+ return 1;
+}
+
/**
* unflatten_device_tree - create tree of device_nodes from flat blob
*