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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 10:02:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 10:02:38 -0700 |
commit | d27050641e9bc056446deb0814e7ba1aa7911f5a (patch) | |
tree | 160f46d9a6df3d7234c71a9fbaa31ebcf89c04d0 /arch/mips | |
parent | b77279bc2e81545b20824da701b349272a78e4e7 (diff) | |
parent | 43cb43678705e39b175b325f17938295996aefc7 (diff) | |
download | op-kernel-dev-d27050641e9bc056446deb0814e7ba1aa7911f5a.zip op-kernel-dev-d27050641e9bc056446deb0814e7ba1aa7911f5a.tar.gz |
Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next
Pull DeviceTree updates from Rob Herring:
- Another round of clean-up of FDT related code in architecture code.
This removes knowledge of internal FDT details from most
architectures except powerpc.
- Conversion of kernel's custom FDT parsing code to use libfdt.
- DT based initialization for generic serial earlycon. The
introduction of generic serial earlycon support went in through the
tty tree.
- Improve the platform device naming for DT probed devices to ensure
unique naming and use parent names instead of a global index.
- Fix a race condition in of_update_property.
- Unify the various linker section OF match tables and fix several
function prototype errors.
- Update platform_get_irq_byname to work in deferred probe cases.
- 2 binding doc updates
* tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits)
of: handle NULL node in next_child iterators
of/irq: provide more wrappers for !CONFIG_OF
devicetree: bindings: Document micrel vendor prefix
dt: bindings: dwc2: fix required value for the phy-names property
of_pci_irq: kill useless variable in of_irq_parse_pci()
of/irq: do irq resolution in platform_get_irq_byname()
of: Add a testcase for of_find_node_by_path()
of: Make of_find_node_by_path() handle /aliases
of: Create unlocked version of for_each_child_of_node()
lib: add glibc style strchrnul() variant
of: Handle memory@0 node on PPC32 only
pci/of: Remove dead code
of: fix race between search and remove in of_update_property()
of: Use NULL for pointers
of: Stop naming platform_device using dcr address
of: Ensure unique names without sacrificing determinism
tty/serial: pl011: add DT based earlycon support
of/fdt: add FDT serial scanning for earlycon
of/fdt: add FDT address translation support
serial: earlycon: add DT support
...
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/cavium-octeon/setup.c | 20 | ||||
-rw-r--r-- | arch/mips/include/asm/mips-boards/generic.h | 4 | ||||
-rw-r--r-- | arch/mips/include/asm/prom.h | 6 | ||||
-rw-r--r-- | arch/mips/kernel/prom.c | 2 | ||||
-rw-r--r-- | arch/mips/lantiq/prom.c | 15 | ||||
-rw-r--r-- | arch/mips/lantiq/prom.h | 2 | ||||
-rw-r--r-- | arch/mips/mti-sead3/sead3-setup.c | 8 | ||||
-rw-r--r-- | arch/mips/netlogic/xlp/dt.c | 19 | ||||
-rw-r--r-- | arch/mips/ralink/of.c | 29 |
9 files changed, 19 insertions, 86 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 331b837..f1bec00 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -1053,36 +1053,26 @@ void prom_free_prom_memory(void) int octeon_prune_device_tree(void); extern const char __dtb_octeon_3xxx_begin; -extern const char __dtb_octeon_3xxx_end; extern const char __dtb_octeon_68xx_begin; -extern const char __dtb_octeon_68xx_end; void __init device_tree_init(void) { - int dt_size; - struct boot_param_header *fdt; + const void *fdt; bool do_prune; if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) { fdt = phys_to_virt(octeon_bootinfo->fdt_addr); if (fdt_check_header(fdt)) panic("Corrupt Device Tree passed to kernel."); - dt_size = be32_to_cpu(fdt->totalsize); do_prune = false; } else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { - fdt = (struct boot_param_header *)&__dtb_octeon_68xx_begin; - dt_size = &__dtb_octeon_68xx_end - &__dtb_octeon_68xx_begin; + fdt = &__dtb_octeon_68xx_begin; do_prune = true; } else { - fdt = (struct boot_param_header *)&__dtb_octeon_3xxx_begin; - dt_size = &__dtb_octeon_3xxx_end - &__dtb_octeon_3xxx_begin; + fdt = &__dtb_octeon_3xxx_begin; do_prune = true; } - /* Copy the default tree from init memory. */ - initial_boot_params = early_init_dt_alloc_memory_arch(dt_size, 8); - if (initial_boot_params == NULL) - panic("Could not allocate initial_boot_params"); - memcpy(initial_boot_params, fdt, dt_size); + initial_boot_params = (void *)fdt; if (do_prune) { octeon_prune_device_tree(); @@ -1090,7 +1080,7 @@ void __init device_tree_init(void) } else { pr_info("Using passed Device Tree.\n"); } - unflatten_device_tree(); + unflatten_and_copy_device_tree(); } static int __initdata disable_octeon_edac_p; diff --git a/arch/mips/include/asm/mips-boards/generic.h b/arch/mips/include/asm/mips-boards/generic.h index 4861681..c904c24 100644 --- a/arch/mips/include/asm/mips-boards/generic.h +++ b/arch/mips/include/asm/mips-boards/generic.h @@ -67,10 +67,6 @@ extern int mips_revision_sconid; -#ifdef CONFIG_OF -extern struct boot_param_header __dtb_start; -#endif - #ifdef CONFIG_PCI extern void mips_pcibios_init(void); #else diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h index ccd2b75..a9494c0 100644 --- a/arch/mips/include/asm/prom.h +++ b/arch/mips/include/asm/prom.h @@ -21,13 +21,13 @@ extern void device_tree_init(void); struct boot_param_header; -extern void __dt_setup_arch(struct boot_param_header *bph); +extern void __dt_setup_arch(void *bph); #define dt_setup_arch(sym) \ ({ \ - extern struct boot_param_header __dtb_##sym##_begin; \ + extern char __dtb_##sym##_begin[]; \ \ - __dt_setup_arch(&__dtb_##sym##_begin); \ + __dt_setup_arch(__dtb_##sym##_begin); \ }) #else /* CONFIG_OF */ diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c index 3c3b0df..5d39bb8 100644 --- a/arch/mips/kernel/prom.c +++ b/arch/mips/kernel/prom.c @@ -47,7 +47,7 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); } -void __init __dt_setup_arch(struct boot_param_header *bph) +void __init __dt_setup_arch(void *bph) { if (!early_init_dt_scan(bph)) return; diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c index 19686c5..7447d32 100644 --- a/arch/mips/lantiq/prom.c +++ b/arch/mips/lantiq/prom.c @@ -71,23 +71,12 @@ void __init plat_mem_setup(void) * Load the builtin devicetree. This causes the chosen node to be * parsed resulting in our memory appearing */ - __dt_setup_arch(&__dtb_start); + __dt_setup_arch(__dtb_start); } void __init device_tree_init(void) { - unsigned long base, size; - - if (!initial_boot_params) - return; - - base = virt_to_phys((void *)initial_boot_params); - size = be32_to_cpu(initial_boot_params->totalsize); - - /* Before we do anything, lets reserve the dt blob */ - reserve_bootmem(base, size, BOOTMEM_DEFAULT); - - unflatten_device_tree(); + unflatten_and_copy_device_tree(); } void __init prom_init(void) diff --git a/arch/mips/lantiq/prom.h b/arch/mips/lantiq/prom.h index 8e07b5f..bfd2d58 100644 --- a/arch/mips/lantiq/prom.h +++ b/arch/mips/lantiq/prom.h @@ -26,6 +26,4 @@ struct ltq_soc_info { extern void ltq_soc_detect(struct ltq_soc_info *i); extern void ltq_soc_init(void); -extern struct boot_param_header __dtb_start; - #endif diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c index bf7fe48..e43f480 100644 --- a/arch/mips/mti-sead3/sead3-setup.c +++ b/arch/mips/mti-sead3/sead3-setup.c @@ -69,17 +69,17 @@ static void __init parse_memsize_param(void) if (!memsize) return; - offset = fdt_path_offset(&__dtb_start, "/memory"); + offset = fdt_path_offset(__dtb_start, "/memory"); if (offset > 0) { uint64_t new_value; /* * reg contains 2 32-bits BE values, offset and size. We just * want to replace the size value without affecting the offset */ - prop_value = fdt_getprop(&__dtb_start, offset, "reg", &prop_len); + prop_value = fdt_getprop(__dtb_start, offset, "reg", &prop_len); new_value = be64_to_cpu(*prop_value); new_value = (new_value & ~0xffffffffllu) | memsize; - fdt_setprop_inplace_u64(&__dtb_start, offset, "reg", new_value); + fdt_setprop_inplace_u64(__dtb_start, offset, "reg", new_value); } } @@ -92,7 +92,7 @@ void __init plat_mem_setup(void) * Load the builtin devicetree. This causes the chosen node to be * parsed resulting in our memory appearing */ - __dt_setup_arch(&__dtb_start); + __dt_setup_arch(__dtb_start); } void __init device_tree_init(void) diff --git a/arch/mips/netlogic/xlp/dt.c b/arch/mips/netlogic/xlp/dt.c index 5754097..bdde331 100644 --- a/arch/mips/netlogic/xlp/dt.c +++ b/arch/mips/netlogic/xlp/dt.c @@ -42,7 +42,7 @@ #include <asm/prom.h> extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], - __dtb_xlp_fvp_begin[], __dtb_xlp_gvp_begin[], __dtb_start[]; + __dtb_xlp_fvp_begin[], __dtb_xlp_gvp_begin[]; static void *xlp_fdt_blob; void __init *xlp_dt_init(void *fdtp) @@ -87,22 +87,7 @@ void __init xlp_early_init_devtree(void) void __init device_tree_init(void) { - unsigned long base, size; - struct boot_param_header *fdtp = xlp_fdt_blob; - - if (!fdtp) - return; - - base = virt_to_phys(fdtp); - size = be32_to_cpu(fdtp->totalsize); - - /* Before we do anything, lets reserve the dt blob */ - reserve_bootmem(base, size, BOOTMEM_DEFAULT); - - unflatten_device_tree(); - - /* free the space reserved for the dt blob */ - free_bootmem(base, size); + unflatten_and_copy_device_tree(); } static struct of_device_id __initdata xlp_ids[] = { diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c index eccc552..2513952 100644 --- a/arch/mips/ralink/of.c +++ b/arch/mips/ralink/of.c @@ -28,8 +28,6 @@ __iomem void *rt_sysc_membase; __iomem void *rt_memc_membase; -extern struct boot_param_header __dtb_start; - __iomem void *plat_of_remap_node(const char *node) { struct resource res; @@ -52,30 +50,7 @@ __iomem void *plat_of_remap_node(const char *node) void __init device_tree_init(void) { - unsigned long base, size; - void *fdt_copy; - - if (!initial_boot_params) - return; - - base = virt_to_phys((void *)initial_boot_params); - size = be32_to_cpu(initial_boot_params->totalsize); - - /* Before we do anything, lets reserve the dt blob */ - reserve_bootmem(base, size, BOOTMEM_DEFAULT); - - /* The strings in the flattened tree are referenced directly by the - * device tree, so copy the flattened device tree from init memory - * to regular memory. - */ - fdt_copy = alloc_bootmem(size); - memcpy(fdt_copy, initial_boot_params, size); - initial_boot_params = fdt_copy; - - unflatten_device_tree(); - - /* free the space reserved for the dt blob */ - free_bootmem(base, size); + unflatten_and_copy_device_tree(); } void __init plat_mem_setup(void) @@ -86,7 +61,7 @@ void __init plat_mem_setup(void) * Load the builtin devicetree. This causes the chosen node to be * parsed resulting in our memory appearing */ - __dt_setup_arch(&__dtb_start); + __dt_setup_arch(__dtb_start); if (soc_info.mem_size) add_memory_region(soc_info.mem_base, soc_info.mem_size * SZ_1M, |