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Commit 6d67a9f6 authored by Rob Herring's avatar Rob Herring
Browse files

arm: use common of_flat_dt_match_machine 



Convert arm to use the common of_flat_dt_match_machine function.

Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
parent 880beb88

arch/arm/kernel/devtree.c

+19 −22
Original line number Diff line number Diff line
@@ -174,6 +174,19 @@ bool arch_match_cpu_phys_id(int cpu, u64 phys_id) 
	return (phys_id & MPIDR_HWID_BITMASK) == cpu_logical_map(cpu);

}



static const void * __init arch_get_next_mach(const char *const **match)

{

	static const struct machine_desc *mdesc = __arch_info_begin;

	const 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_phys: physical address of dt blob
@@ -184,9 +197,6 @@ bool arch_match_cpu_phys_id(int cpu, u64 phys_id) 
const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys)

{

	const struct machine_desc *mdesc, *mdesc_best = NULL;

	unsigned int score, mdesc_score = ~1;

	unsigned long dt_root;

	const char *model;



#ifdef CONFIG_ARCH_MULTIPLATFORM

	DT_MACHINE_START(GENERIC_DT, "Generic DT based system")
@@ -198,23 +208,17 @@ const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) 
	if (!dt_phys || !early_init_dt_scan(phys_to_virt(dt_phys)))

		return NULL;



	mdesc = of_flat_dt_match_machine(mdesc_best, arch_get_next_mach);



	/* Search the mdescs for the 'best' compatible value match */

	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) {

	if (!mdesc) {

		const char *prop;

		long size;

		unsigned long dt_root;



		early_print("\nError: unrecognized/unsupported "

			    "device tree compatible list:\n[ ");



		dt_root = of_get_flat_dt_root();

		prop = of_get_flat_dt_prop(dt_root, "compatible", &size);

		while (size > 0) {

			early_print("'%s' ", prop);
@@ -226,15 +230,8 @@ const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) 
		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);



	/* Change machine number to match the mdesc we're using */

	__machine_arch_type = mdesc_best->nr;

	__machine_arch_type = mdesc->nr;



	return mdesc_best;

	return mdesc;

}