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-rw-r--r--drivers/of/address.c8
-rw-r--r--drivers/of/base.c7
-rw-r--r--drivers/of/fdt.c138
-rw-r--r--drivers/of/of_pci.c1
-rw-r--r--drivers/of/of_pci_irq.c1
-rw-r--r--drivers/of/pdt.c1
-rw-r--r--drivers/of/platform.c2
7 files changed, 152 insertions, 6 deletions
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 994f293..4b9317b 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -626,6 +626,14 @@ const __be32 *of_get_address(struct device_node *dev, int index, u64 *size,
}
EXPORT_SYMBOL(of_get_address);
+unsigned long __weak pci_address_to_pio(phys_addr_t address)
+{
+ if (address > IO_SPACE_LIMIT)
+ return (unsigned long)-1;
+
+ return (unsigned long) address;
+}
+
static int __of_address_to_resource(struct device_node *dev,
const __be32 *addrp, u64 size, unsigned int flags,
const char *name, struct resource *r)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 021db96..f243109 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -74,6 +74,13 @@ int of_n_size_cells(struct device_node *np)
}
EXPORT_SYMBOL(of_n_size_cells);
+#ifdef CONFIG_NUMA
+int __weak of_node_to_nid(struct device_node *np)
+{
+ return numa_node_id();
+}
+#endif
+
#if defined(CONFIG_OF_DYNAMIC)
/**
* of_node_get - Increment refcount of a node
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 229dd9d..5c47910 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -619,12 +619,72 @@ int __init of_scan_flat_dt_by_path(const char *path,
return ret;
}
+const char * __init of_flat_dt_get_machine_name(void)
+{
+ const char *name;
+ unsigned long dt_root = of_get_flat_dt_root();
+
+ name = of_get_flat_dt_prop(dt_root, "model", NULL);
+ if (!name)
+ name = of_get_flat_dt_prop(dt_root, "compatible", NULL);
+ return name;
+}
+
+/**
+ * of_flat_dt_match_machine - Iterate match tables to find matching machine.
+ *
+ * @default_match: A machine specific ptr to return in case of no match.
+ * @get_next_compat: callback function to return next compatible match table.
+ *
+ * Iterate through machine match tables to find the best match for the machine
+ * compatible string in the FDT.
+ */
+const void * __init of_flat_dt_match_machine(const void *default_match,
+ const void * (*get_next_compat)(const char * const**))
+{
+ const void *data = NULL;
+ const void *best_data = default_match;
+ const char *const *compat;
+ unsigned long dt_root;
+ unsigned int best_score = ~1, score = 0;
+
+ dt_root = of_get_flat_dt_root();
+ while ((data = get_next_compat(&compat))) {
+ score = of_flat_dt_match(dt_root, compat);
+ if (score > 0 && score < best_score) {
+ best_data = data;
+ best_score = score;
+ }
+ }
+ if (!best_data) {
+ const char *prop;
+ long size;
+
+ pr_err("\n unrecognized device tree 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");
+ return NULL;
+ }
+
+ pr_info("Machine model: %s\n", of_flat_dt_get_machine_name());
+
+ return best_data;
+}
+
#ifdef CONFIG_BLK_DEV_INITRD
/**
* early_init_dt_check_for_initrd - Decode initrd location from flat tree
* @node: reference to node containing initrd location ('chosen')
*/
-void __init early_init_dt_check_for_initrd(unsigned long node)
+static void __init early_init_dt_check_for_initrd(unsigned long node)
{
u64 start, end;
unsigned long len;
@@ -642,12 +702,15 @@ void __init early_init_dt_check_for_initrd(unsigned long node)
return;
end = of_read_number(prop, len/4);
- early_init_dt_setup_initrd_arch(start, end);
+ initrd_start = (unsigned long)__va(start);
+ initrd_end = (unsigned long)__va(end);
+ initrd_below_start_ok = 1;
+
pr_debug("initrd_start=0x%llx initrd_end=0x%llx\n",
(unsigned long long)start, (unsigned long long)end);
}
#else
-inline void early_init_dt_check_for_initrd(unsigned long node)
+static inline void early_init_dt_check_for_initrd(unsigned long node)
{
}
#endif /* CONFIG_BLK_DEV_INITRD */
@@ -775,6 +838,25 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
}
#ifdef CONFIG_HAVE_MEMBLOCK
+void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
+{
+ const u64 phys_offset = __pa(PAGE_OFFSET);
+ base &= PAGE_MASK;
+ size &= PAGE_MASK;
+ if (base + size < phys_offset) {
+ pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
+ base, base + size);
+ return;
+ }
+ if (base < phys_offset) {
+ pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
+ base, phys_offset);
+ size -= phys_offset - base;
+ base = phys_offset;
+ }
+ memblock_add(base, size);
+}
+
/*
* called from unflatten_device_tree() to bootstrap devicetree itself
* Architectures can override this definition if memblock isn't used
@@ -785,6 +867,32 @@ void * __init __weak early_init_dt_alloc_memory_arch(u64 size, u64 align)
}
#endif
+bool __init early_init_dt_scan(void *params)
+{
+ if (!params)
+ return false;
+
+ /* Setup flat device-tree pointer */
+ initial_boot_params = params;
+
+ /* check device tree validity */
+ if (be32_to_cpu(initial_boot_params->magic) != OF_DT_HEADER) {
+ initial_boot_params = NULL;
+ return false;
+ }
+
+ /* Retrieve various information from the /chosen node */
+ of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
+
+ /* Initialize {size,address}-cells info */
+ of_scan_flat_dt(early_init_dt_scan_root, NULL);
+
+ /* Setup memory, calling early_init_dt_add_memory_arch */
+ of_scan_flat_dt(early_init_dt_scan_memory, NULL);
+
+ return true;
+}
+
/**
* unflatten_device_tree - create tree of device_nodes from flat blob
*
@@ -802,6 +910,30 @@ void __init unflatten_device_tree(void)
of_alias_scan(early_init_dt_alloc_memory_arch);
}
+/**
+ * unflatten_and_copy_device_tree - copy and create tree of device_nodes from flat blob
+ *
+ * Copies and unflattens the device-tree passed by the firmware, creating the
+ * tree of struct device_node. It also fills the "name" and "type"
+ * pointers of the nodes so the normal device-tree walking functions
+ * can be used. This should only be used when the FDT memory has not been
+ * reserved such is the case when the FDT is built-in to the kernel init
+ * section. If the FDT memory is reserved already then unflatten_device_tree
+ * should be used instead.
+ */
+void __init unflatten_and_copy_device_tree(void)
+{
+ int size = __be32_to_cpu(initial_boot_params->totalsize);
+ void *dt = early_init_dt_alloc_memory_arch(size,
+ __alignof__(struct boot_param_header));
+
+ if (dt) {
+ memcpy(dt, initial_boot_params, size);
+ initial_boot_params = dt;
+ }
+ unflatten_device_tree();
+}
+
#endif /* CONFIG_OF_EARLY_FLATTREE */
/* Feed entire flattened device tree into the random pool */
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index e5ca008..8481996 100644
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@ -2,7 +2,6 @@
#include <linux/export.h>
#include <linux/of.h>
#include <linux/of_pci.h>
-#include <asm/prom.h>
static inline int __of_pci_pci_compare(struct device_node *node,
unsigned int data)
diff --git a/drivers/of/of_pci_irq.c b/drivers/of/of_pci_irq.c
index 8e92acd..8736bc7 100644
--- a/drivers/of/of_pci_irq.c
+++ b/drivers/of/of_pci_irq.c
@@ -2,7 +2,6 @@
#include <linux/of_pci.h>
#include <linux/of_irq.h>
#include <linux/export.h>
-#include <asm/prom.h>
/**
* of_irq_parse_pci - Resolve the interrupt for a PCI device
diff --git a/drivers/of/pdt.c b/drivers/of/pdt.c
index 4ec19cb..7b66673 100644
--- a/drivers/of/pdt.c
+++ b/drivers/of/pdt.c
@@ -22,7 +22,6 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_pdt.h>
-#include <asm/prom.h>
static struct of_pdt_ops *of_pdt_prom_ops __initdata;
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 9b439ac..c005495 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -216,6 +216,8 @@ static struct platform_device *of_platform_device_create_pdata(
dev->archdata.dma_mask = 0xffffffffUL;
#endif
dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ if (!dev->dev.dma_mask)
+ dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
dev->dev.bus = &platform_bus_type;
dev->dev.platform_data = platform_data;