diff options
Diffstat (limited to 'arch/metag/kernel/devtree.c')
-rw-r--r-- | arch/metag/kernel/devtree.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/metag/kernel/devtree.c b/arch/metag/kernel/devtree.c new file mode 100644 index 000000000..18dd7aea9 --- /dev/null +++ b/arch/metag/kernel/devtree.c @@ -0,0 +1,71 @@ +/* + * linux/arch/metag/kernel/devtree.c + * + * Copyright (C) 2012 Imagination Technologies Ltd. + * + * Based on ARM version: + * Copyright (C) 2009 Canonical Ltd. <jeremy.kerr@canonical.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/export.h> +#include <linux/types.h> +#include <linux/bootmem.h> +#include <linux/memblock.h> +#include <linux/of.h> +#include <linux/of_fdt.h> + +#include <asm/setup.h> +#include <asm/page.h> +#include <asm/mach/arch.h> + +void __init early_init_dt_add_memory_arch(u64 base, u64 size) +{ + pr_err("%s(%llx, %llx)\n", + __func__, base, size); +} + +void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) +{ + return alloc_bootmem_align(size, align); +} + +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: virtual address pointer to dt blob + * + * If a dtb was passed to the kernel, then use it to choose the correct + * machine_desc and to setup the system. + */ +const struct machine_desc * __init setup_machine_fdt(void *dt) +{ + const struct machine_desc *mdesc; + + /* check device tree validity */ + if (!early_init_dt_scan(dt)) + return NULL; + + mdesc = of_flat_dt_match_machine(NULL, arch_get_next_mach); + if (!mdesc) + dump_machine_table(); /* does not return */ + pr_info("Machine name: %s\n", mdesc->name); + + return mdesc; +} |