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Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6

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* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (41 commits)
  of: remove undefined request_OF_resource & release_OF_resource
  of/sparc: Remove sparc-local declaration of allnodes and devtree_lock
  of: move definition of of_chosen into common code.
  of: remove unused extern reference to devtree_lock
  of: put default string compare and #a/s-cell values into common header
  of/flattree: Don't assume HAVE_LMB
  of: protect linux/of.h with CONFIG_OF
  proc_devtree: fix THIS_MODULE without module.h
  of: Remove old and misplaced function declarations
  of/flattree: Make the kernel accept ePAPR style phandle information
  of/flattree: endian-convert members of boot_param_header
  of: assume big-endian properties, adding conversions where necessary
  of: use __be32 for cell value accessors
  of/flattree: use OF_ROOT_NODE_{SIZE,ADDR}_CELLS DEFAULT for fdt parsing
  of/flattree: use callback to setup initrd from /chosen
  proc_devtree: include linux/of.h
  of: make set_node_proc_entry private to proc_devtree.c
  of: include linux/proc_fs.h
  of/flattree: merge early_init_dt_scan_memory() common code
  of: add 'of_' prefix to machine_is_compatible()
  ...
This commit is contained in:
Linus Torvalds 2010-02-25 15:38:37 -08:00
commit 6ebdc661b6
67 changed files with 1244 additions and 2096 deletions
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62
include/linux/of.h
View file

@ -19,6 +19,11 @@
#include <linux/bitops.h>
#include <linux/kref.h>
#include <linux/mod_devicetable.h>
#include <linux/spinlock.h>
#include <asm/byteorder.h>
#ifdef CONFIG_OF
typedef u32 phandle;
typedef u32 ihandle;
@ -39,10 +44,7 @@ struct of_irq_controller;
struct device_node {
const char *name;
const char *type;
phandle node;
#if !defined(CONFIG_SPARC)
phandle linux_phandle;
#endif
phandle phandle;
char *full_name;
struct property *properties;
@ -63,6 +65,11 @@ struct device_node {
#endif
};
/* Pointer for first entry in chain of all nodes. */
extern struct device_node *allnodes;
extern struct device_node *of_chosen;
extern rwlock_t devtree_lock;
static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
{
return test_bit(flag, &n->_flags);
@ -73,12 +80,6 @@ static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
set_bit(flag, &n->_flags);
}
static inline void
set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
{
dn->pde = de;
}
extern struct device_node *of_find_all_nodes(struct device_node *prev);
#if defined(CONFIG_SPARC)
@ -101,26 +102,36 @@ extern void of_node_put(struct device_node *node);
*/
/* Helper to read a big number; size is in cells (not bytes) */
static inline u64 of_read_number(const u32 *cell, int size)
static inline u64 of_read_number(const __be32 *cell, int size)
{
u64 r = 0;
while (size--)
r = (r << 32) | *(cell++);
r = (r << 32) | be32_to_cpu(*(cell++));
return r;
}
/* Like of_read_number, but we want an unsigned long result */
#ifdef CONFIG_PPC32
static inline unsigned long of_read_ulong(const u32 *cell, int size)
static inline unsigned long of_read_ulong(const __be32 *cell, int size)
{
return cell[size-1];
/* toss away upper bits if unsigned long is smaller than u64 */
return of_read_number(cell, size);
}
#else
#define of_read_ulong(cell, size) of_read_number(cell, size)
#endif
#include <asm/prom.h>
/* Default #address and #size cells. Allow arch asm/prom.h to override */
#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
#endif
/* Default string compare functions, Allow arch asm/prom.h to override */
#if !defined(of_compat_cmp)
#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
#endif
/* flag descriptions */
#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
#define OF_DETACHED 2 /* node has been detached from the device tree */
@ -187,4 +198,19 @@ extern int of_parse_phandles_with_args(struct device_node *np,
const char *list_name, const char *cells_name, int index,
struct device_node **out_node, const void **out_args);
extern int of_machine_is_compatible(const char *compat);
extern int prom_add_property(struct device_node* np, struct property* prop);
extern int prom_remove_property(struct device_node *np, struct property *prop);
extern int prom_update_property(struct device_node *np,
struct property *newprop,
struct property *oldprop);
#if defined(CONFIG_OF_DYNAMIC)
/* For updating the device tree at runtime */
extern void of_attach_node(struct device_node *);
extern void of_detach_node(struct device_node *);
#endif
#endif /* CONFIG_OF */
#endif /* _LINUX_OF_H */

75
include/linux/of_fdt.h
View file

@ -42,45 +42,62 @@
* ends when size is 0
*/
struct boot_param_header {
u32 magic; /* magic word OF_DT_HEADER */
u32 totalsize; /* total size of DT block */
u32 off_dt_struct; /* offset to structure */
u32 off_dt_strings; /* offset to strings */
u32 off_mem_rsvmap; /* offset to memory reserve map */
u32 version; /* format version */
u32 last_comp_version; /* last compatible version */
__be32 magic; /* magic word OF_DT_HEADER */
__be32 totalsize; /* total size of DT block */
__be32 off_dt_struct; /* offset to structure */
__be32 off_dt_strings; /* offset to strings */
__be32 off_mem_rsvmap; /* offset to memory reserve map */
__be32 version; /* format version */
__be32 last_comp_version; /* last compatible version */
/* version 2 fields below */
u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
__be32 boot_cpuid_phys; /* Physical CPU id we're booting on */
/* version 3 fields below */
u32 dt_strings_size; /* size of the DT strings block */
__be32 dt_strings_size; /* size of the DT strings block */
/* version 17 fields below */
u32 dt_struct_size; /* size of the DT structure block */
__be32 dt_struct_size; /* size of the DT structure block */
};
/* TBD: Temporary export of fdt globals - remove when code fully merged */
extern int __initdata dt_root_addr_cells;
extern int __initdata dt_root_size_cells;
extern struct boot_param_header *initial_boot_params;
/* For scanning the flat device-tree at boot time */
extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
const char *uname, int depth,
void *data),
void *data);
extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name,
unsigned long *size);
extern int __init of_flat_dt_is_compatible(unsigned long node,
const char *name);
extern unsigned long __init of_get_flat_dt_root(void);
extern char *find_flat_dt_string(u32 offset);
extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
int depth, void *data),
void *data);
extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
unsigned long *size);
extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
extern unsigned long of_get_flat_dt_root(void);
extern void early_init_dt_scan_chosen_arch(unsigned long node);
extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
int depth, void *data);
extern void early_init_dt_check_for_initrd(unsigned long node);
extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
int depth, void *data);
extern void early_init_dt_add_memory_arch(u64 base, u64 size);
extern u64 early_init_dt_alloc_memory_arch(u64 size, u64 align);
extern u64 dt_mem_next_cell(int s, __be32 **cellp);
/*
* If BLK_DEV_INITRD, the fdt early init code will call this function,
* to be provided by the arch code. start and end are specified as
* physical addresses.
*/
#ifdef CONFIG_BLK_DEV_INITRD
extern void early_init_dt_setup_initrd_arch(unsigned long start,
unsigned long end);
#endif
/* Early flat tree scan hooks */
extern int early_init_dt_scan_root(unsigned long node, const char *uname,
int depth, void *data);
/* Other Prototypes */
extern void finish_device_tree(void);
extern void unflatten_device_tree(void);
extern void early_init_devtree(void *);
extern int machine_is_compatible(const char *compat);
extern void print_properties(struct device_node *node);
extern int prom_n_intr_cells(struct device_node* np);
extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
extern int prom_add_property(struct device_node* np, struct property* prop);
extern int prom_remove_property(struct device_node *np, struct property *prop);
extern int prom_update_property(struct device_node *np,
struct property *newprop,
struct property *oldprop);
#endif /* __ASSEMBLY__ */
#endif /* _LINUX_OF_FDT_H */