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drivers: of: add initialization code for dynamic reserved memory

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This patch adds support for dynamically allocated reserved memory regions
declared in device tree. Such regions are defined by 'size', 'alignment'
and 'alloc-ranges' properties.

Based on previous code provided by Josh Cartwright <joshc@codeaurora.org>

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Marek Szyprowski 2014-02-28 14:42:48 +01:00 • committed by Grant Likely
parent e8d9d1f548
commit 3f0c820664
5 changed files with 227 additions and 2 deletions
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21
include/linux/of_reserved_mem.h Normal file
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#ifndef __OF_RESERVED_MEM_H
#define __OF_RESERVED_MEM_H
struct reserved_mem {
const char *name;
unsigned long fdt_node;
phys_addr_t base;
phys_addr_t size;
};
#ifdef CONFIG_OF_RESERVED_MEM
void fdt_init_reserved_mem(void);
void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
phys_addr_t base, phys_addr_t size);
#else
static inline void fdt_init_reserved_mem(void) { }
static inline void fdt_reserved_mem_save_node(unsigned long node,
const char *uname, phys_addr_t base, phys_addr_t size) { }
#endif
#endif /* __OF_RESERVED_MEM_H */