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dm: Add more livetree helpers and definitions

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Add some definitions and helpers for livetree in the main of.h header
file. These include:

- reading multi-cell integers
- default number of address/size cells
- functions for comparing names

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2017-05-18 20:09:27 -06:00
parent eed36609b5
commit a4b8e372d5
2 changed files with 38 additions and 2 deletions
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4
drivers/core/ofnode.c
View file

@ -457,8 +457,8 @@ fdt_addr_t ofnode_get_addr_size(ofnode node, const char *property,
na = of_n_addr_cells(np);
ns = of_n_addr_cells(np);
*sizep = fdt_read_number(prop + na, ns);
return fdt_read_number(prop, na);
*sizep = of_read_number(prop + na, ns);
return of_read_number(prop, na);
} else {
return fdtdec_get_addr_size(gd->fdt_blob,
ofnode_to_offset(node), property,

36
include/dm/of.h
View file

@ -103,4 +103,40 @@ static inline bool of_live_active(void)
}
#endif
#define OF_BAD_ADDR ((u64)-1)
static inline const char *of_node_full_name(const struct device_node *np)
{
return np ? np->full_name : "<no-node>";
}
/* Default #address and #size cells */
#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 */
#if !defined(of_compat_cmp)
#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
#endif
/* Helper to read a big number; size is in cells (not bytes) */
static inline u64 of_read_number(const __be32 *cell, int size)
{
u64 r = 0;
while (size--)
r = (r << 32) | be32_to_cpu(*(cell++));
return r;
}
/* Like of_read_number, but we want an unsigned long result */
static inline unsigned long of_read_ulong(const __be32 *cell, int size)
{
/* toss away upper bits if unsigned long is smaller than u64 */
return of_read_number(cell, size);
}
#endif