From: Rob Herring <rob.herr...@calxeda.com>
Convert metag to use the common of_flat_dt_get_machine_name function.
Signed-off-by: Rob Herring <rob.herr...@calxeda.com>
Cc: James Hogan <james.ho...@imgtec.com>
---
arch/metag/kernel/devtree.c | 67 ++++++++++++---------------------------------
1 file changed, 18 insertions(+), 49 deletions(-)
diff --git a/arch/metag/kernel/devtree.c b/arch/metag/kernel/devtree.c
index 2c6ee6d..b26bcb4 100644
--- a/arch/metag/kernel/devtree.c
+++ b/arch/metag/kernel/devtree.c
@@ -28,6 +28,19 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64
align)
return alloc_bootmem_align(size, align);
}
+static void * __init arch_get_next_mach(const char *const **match)
+{
+ static struct machine_desc *mdesc = __arch_info_begin;
+ struct machine_desc *m = mdesc;
+
+ if (m >= __arch_info_end)
+ return NULL;
+
+ mdesc++;
+ *match = m->dt_compat;
+ return m;
+}
+
/**
* setup_machine_fdt - Machine setup when an dtb was passed to the kernel
* @dt: virtual address pointer to dt blob
@@ -37,56 +50,12 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64
align)
*/
struct machine_desc * __init setup_machine_fdt(void *dt)
{
- struct boot_param_header *devtree = dt;
- struct machine_desc *mdesc, *mdesc_best = NULL;
- unsigned int score, mdesc_score = ~1;
- unsigned long dt_root;
- const char *model;
-
- /* check device tree validity */
- if (be32_to_cpu(devtree->magic) != OF_DT_HEADER)
- return NULL;
-
- /* Search the mdescs for the 'best' compatible value match */
- initial_boot_params = devtree;
- dt_root = of_get_flat_dt_root();
-
- for_each_machine_desc(mdesc) {
- score = of_flat_dt_match(dt_root, mdesc->dt_compat);
- if (score > 0 && score < mdesc_score) {
- mdesc_best = mdesc;
- mdesc_score = score;
- }
- }
- if (!mdesc_best) {
- const char *prop;
- long size;
-
- pr_err("\nError: unrecognized/unsupported device tree
compatible list:\n[ ");
-
- prop = of_get_flat_dt_prop(dt_root, "compatible", &size);
- if (prop) {
- while (size > 0) {
- printk("'%s' ", prop);
- size -= strlen(prop) + 1;
- prop += strlen(prop) + 1;
- }
- }
- printk("]\n\n");
+ struct machine_desc *mdesc;
+ early_init_dt_scan(dt);
+ mdesc = of_flat_dt_match_machine(NULL, arch_get_next_mach);
+ if (!mdesc)
dump_machine_table(); /* does not return */
- }
-
- model = of_get_flat_dt_prop(dt_root, "model", NULL);
- if (!model)
- model = of_get_flat_dt_prop(dt_root, "compatible", NULL);
- if (!model)
- model = "<unknown>";
- pr_info("Machine: %s, model: %s\n", mdesc_best->name, model);
-
- /* Retrieve various information from the /chosen node */
- of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
-
- return mdesc_best;
+ return mdesc;
}
--
1.8.1.2
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