diff options
Diffstat (limited to 'arch/metag/kernel')
-rw-r--r-- | arch/metag/kernel/devtree.c | 83 | ||||
-rw-r--r-- | arch/metag/kernel/setup.c | 7 |
2 files changed, 22 insertions, 68 deletions
diff --git a/arch/metag/kernel/devtree.c b/arch/metag/kernel/devtree.c index 7cd02529636e..18dd7aea9fdc 100644 --- a/arch/metag/kernel/devtree.c +++ b/arch/metag/kernel/devtree.c @@ -34,6 +34,19 @@ 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 @@ -41,74 +54,18 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) * If a dtb was passed to the kernel, then use it to choose the correct * machine_desc and to setup the system. */ -struct machine_desc * __init setup_machine_fdt(void *dt) +const 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; + const struct machine_desc *mdesc; /* check device tree validity */ - if (be32_to_cpu(devtree->magic) != OF_DT_HEADER) + if (!early_init_dt_scan(dt)) 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"); - + 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; -} + pr_info("Machine name: %s\n", mdesc->name); -/** - * copy_fdt - Copy device tree into non-init memory. - * - * We must copy the flattened device tree blob into non-init memory because the - * unflattened device tree will reference the strings in it directly. - */ -void __init copy_fdt(void) -{ - void *alloc = early_init_dt_alloc_memory_arch( - be32_to_cpu(initial_boot_params->totalsize), 0x40); - if (alloc) { - memcpy(alloc, initial_boot_params, - be32_to_cpu(initial_boot_params->totalsize)); - initial_boot_params = alloc; - } + return mdesc; } diff --git a/arch/metag/kernel/setup.c b/arch/metag/kernel/setup.c index e639bae09645..129c7cdda1ce 100644 --- a/arch/metag/kernel/setup.c +++ b/arch/metag/kernel/setup.c @@ -42,7 +42,6 @@ #include <asm/mmu.h> #include <asm/mmzone.h> #include <asm/processor.h> -#include <asm/prom.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/traps.h> @@ -115,7 +114,7 @@ extern u32 __dtb_start[]; extern struct console dash_console; #endif -struct machine_desc *machine_desc __initdata; +const struct machine_desc *machine_desc __initdata; /* * Map a Linux CPU number to a hardware thread ID @@ -404,9 +403,7 @@ void __init setup_arch(char **cmdline_p) cpu_2_hwthread_id[smp_processor_id()] = hard_processor_id(); hwthread_id_2_cpu[hard_processor_id()] = smp_processor_id(); - /* Copy device tree blob into non-init memory before unflattening */ - copy_fdt(); - unflatten_device_tree(); + unflatten_and_copy_device_tree(); #ifdef CONFIG_SMP smp_init_cpus(); |