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path: root/drivers/of/fdt.c
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Diffstat (limited to 'drivers/of/fdt.c')
-rw-r--r--drivers/of/fdt.c41
1 files changed, 32 insertions, 9 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index cde35c5d0..07496560e 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -164,11 +164,14 @@ static void *unflatten_dt_alloc(void **mem, unsigned long size,
* unflatten_dt_node - Alloc and populate a device_node from the flat tree
* @blob: The parent device tree blob
* @mem: Memory chunk to use for allocating device nodes and properties
- * @p: pointer to node in flat tree
+ * @poffset: pointer to node in flat tree
* @dad: Parent struct device_node
+ * @nodepp: The device_node tree created by the call
* @fpsize: Size of the node path up at the current depth.
+ * @dryrun: If true, do not allocate device nodes but still calculate needed
+ * memory size
*/
-static void * unflatten_dt_node(void *blob,
+static void * unflatten_dt_node(const void *blob,
void *mem,
int *poffset,
struct device_node *dad,
@@ -378,7 +381,7 @@ static void * unflatten_dt_node(void *blob,
* @dt_alloc: An allocator that provides a virtual address to memory
* for the resulting tree
*/
-static void __unflatten_device_tree(void *blob,
+static void __unflatten_device_tree(const void *blob,
struct device_node **mynodes,
void * (*dt_alloc)(u64 size, u64 align))
{
@@ -441,7 +444,7 @@ static void *kernel_tree_alloc(u64 size, u64 align)
* pointers of the nodes so the normal device-tree walking functions
* can be used.
*/
-void of_fdt_unflatten_tree(unsigned long *blob,
+void of_fdt_unflatten_tree(const unsigned long *blob,
struct device_node **mynodes)
{
__unflatten_device_tree(blob, mynodes, &kernel_tree_alloc);
@@ -580,11 +583,6 @@ void __init early_init_fdt_scan_reserved_mem(void)
if (!initial_boot_params)
return;
- /* Reserve the dtb region */
- early_init_dt_reserve_memory_arch(__pa(initial_boot_params),
- fdt_totalsize(initial_boot_params),
- 0);
-
/* Process header /memreserve/ fields */
for (n = 0; ; n++) {
fdt_get_mem_rsv(initial_boot_params, n, &base, &size);
@@ -598,6 +596,20 @@ void __init early_init_fdt_scan_reserved_mem(void)
}
/**
+ * early_init_fdt_reserve_self() - reserve the memory used by the FDT blob
+ */
+void __init early_init_fdt_reserve_self(void)
+{
+ if (!initial_boot_params)
+ return;
+
+ /* Reserve the dtb region */
+ early_init_dt_reserve_memory_arch(__pa(initial_boot_params),
+ fdt_totalsize(initial_boot_params),
+ 0);
+}
+
+/**
* of_scan_flat_dt - scan flattened tree blob and call callback on each.
* @it: callback function
* @data: context data pointer
@@ -1015,6 +1027,11 @@ void * __init __weak early_init_dt_alloc_memory_arch(u64 size, u64 align)
return __va(memblock_alloc(size, align));
}
#else
+void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
+{
+ WARN_ON(1);
+}
+
int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
phys_addr_t size, bool nomap)
{
@@ -1022,6 +1039,12 @@ int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
&base, &size, nomap ? " (nomap)" : "");
return -ENOSYS;
}
+
+void * __init __weak early_init_dt_alloc_memory_arch(u64 size, u64 align)
+{
+ WARN_ON(1);
+ return NULL;
+}
#endif
bool __init early_init_dt_verify(void *params)