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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 16:52:17 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-12 16:52:17 +0900
commit10d0c9705e80bbd3d587c5fad24599aabaca6688 (patch)
tree9456083a1b04b8d98da08d88e937cfeff80e2a7d /arch/metag
parent85b656cf1560e27a89354a23f2c10ba229d2f173 (diff)
parentc11eede69b6ad0ac44ebc1e021a8d2699c5f1f8f (diff)
downloadlinux-linaro-stable-10d0c9705e80bbd3d587c5fad24599aabaca6688.tar.gz
Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring: "DeviceTree updates for 3.13. This is a bit larger pull request than usual for this cycle with lots of clean-up. - Cross arch clean-up and consolidation of early DT scanning code. - Clean-up and removal of arch prom.h headers. Makes arch specific prom.h optional on all but Sparc. - Addition of interrupts-extended property for devices connected to multiple interrupt controllers. - Refactoring of DT interrupt parsing code in preparation for deferred probe of interrupts. - ARM cpu and cpu topology bindings documentation. - Various DT vendor binding documentation updates" * tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits) powerpc: add missing explicit OF includes for ppc dt/irq: add empty of_irq_count for !OF_IRQ dt: disable self-tests for !OF_IRQ of: irq: Fix interrupt-map entry matching MIPS: Netlogic: replace early_init_devtree() call of: Add Panasonic Corporation vendor prefix of: Add Chunghwa Picture Tubes Ltd. vendor prefix of: Add AU Optronics Corporation vendor prefix of/irq: Fix potential buffer overflow of/irq: Fix bug in interrupt parsing refactor. of: set dma_mask to point to coherent_dma_mask of: add vendor prefix for PHYTEC Messtechnik GmbH DT: sort vendor-prefixes.txt of: Add vendor prefix for Cadence of: Add empty for_each_available_child_of_node() macro definition arm/versatile: Fix versatile irq specifications. of/irq: create interrupts-extended property microblaze/pci: Drop PowerPC-ism from irq parsing of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code. of/irq: Use irq_of_parse_and_map() ...
Diffstat (limited to 'arch/metag')
-rw-r--r--arch/metag/include/asm/mach/arch.h2
-rw-r--r--arch/metag/include/asm/prom.h23
-rw-r--r--arch/metag/include/asm/setup.h1
-rw-r--r--arch/metag/kernel/devtree.c83
-rw-r--r--arch/metag/kernel/setup.c7
-rw-r--r--arch/metag/mm/init.c9
6 files changed, 24 insertions, 101 deletions
diff --git a/arch/metag/include/asm/mach/arch.h b/arch/metag/include/asm/mach/arch.h
index 12c5664fea6e..433f94624fa2 100644
--- a/arch/metag/include/asm/mach/arch.h
+++ b/arch/metag/include/asm/mach/arch.h
@@ -53,7 +53,7 @@ struct machine_desc {
/*
* Current machine - only accessible during boot.
*/
-extern struct machine_desc *machine_desc;
+extern const struct machine_desc *machine_desc;
/*
* Machine type table - also only accessible during boot
diff --git a/arch/metag/include/asm/prom.h b/arch/metag/include/asm/prom.h
deleted file mode 100644
index d2aa35d2228e..000000000000
--- a/arch/metag/include/asm/prom.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * arch/metag/include/asm/prom.h
- *
- * 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.
- *
- */
-#ifndef __ASM_METAG_PROM_H
-#define __ASM_METAG_PROM_H
-
-#include <asm/setup.h>
-#define HAVE_ARCH_DEVTREE_FIXUPS
-
-extern struct machine_desc *setup_machine_fdt(void *dt);
-extern void copy_fdt(void);
-
-#endif /* __ASM_METAG_PROM_H */
diff --git a/arch/metag/include/asm/setup.h b/arch/metag/include/asm/setup.h
index e13083b15dd0..e9fdee9452b1 100644
--- a/arch/metag/include/asm/setup.h
+++ b/arch/metag/include/asm/setup.h
@@ -3,6 +3,7 @@
#include <uapi/asm/setup.h>
+extern const struct machine_desc *setup_machine_fdt(void *dt);
void per_cpu_trap_init(unsigned long);
extern void __init dump_machine_table(void);
#endif /* _ASM_METAG_SETUP_H */
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();
diff --git a/arch/metag/mm/init.c b/arch/metag/mm/init.c
index 123919534b80..249fff66add3 100644
--- a/arch/metag/mm/init.c
+++ b/arch/metag/mm/init.c
@@ -12,7 +12,6 @@
#include <linux/percpu.h>
#include <linux/memblock.h>
#include <linux/initrd.h>
-#include <linux/of_fdt.h>
#include <asm/setup.h>
#include <asm/page.h>
@@ -405,11 +404,3 @@ void free_initrd_mem(unsigned long start, unsigned long end)
"initrd");
}
#endif
-
-#ifdef CONFIG_OF_FLATTREE
-void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
-{
- pr_err("%s(%llx, %llx)\n",
- __func__, start, end);
-}
-#endif /* CONFIG_OF_FLATTREE */