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arm: use common of_flat_dt_match_machine

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Convert arm to use the common of_flat_dt_match_machine function.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
This commit is contained in:
Rob Herring 2013-08-27 21:43:49 -05:00
parent 880beb8807
commit 6d67a9f672
1 changed files with 19 additions and 22 deletions
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41
arch/arm/kernel/devtree.c
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@ -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;
}