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dm: core: Add size operations on device tree references

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Add functions to add size of addresses in the device tree using ofnode
references.

If the size is not set, return FDT_SIZE_T_NONE.

Signed-off-by: Chen Guanqiao <chenguanqiao@kuaishou.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Chen Guanqiao
2021-04-12 14:51:11 +08:00
committed by Simon Glass
parent f1a83abe60
commit aa351a14bd
3 changed files with 24 additions and 2 deletions
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10
include/dm/ofnode.h
View File

@@ -510,6 +510,16 @@ phys_addr_t ofnode_get_addr_index(ofnode node, int index);
*/
phys_addr_t ofnode_get_addr(ofnode node);
/**
* ofnode_get_size() - get size from a node
*
* This reads the register size from a node
*
* @node: node to read from
* @return size of the address, or FDT_SIZE_T_NONE if not present or invalid
*/
fdt_size_t ofnode_get_size(ofnode node);
/**
* ofnode_stringlist_search() - find a string in a string list and return index
*

5
include/fdtdec.h
View File

@@ -24,15 +24,16 @@
typedef phys_addr_t fdt_addr_t;
typedef phys_size_t fdt_size_t;
#ifdef CONFIG_PHYS_64BIT
#define FDT_ADDR_T_NONE (-1U)
#define FDT_SIZE_T_NONE (-1U)
#ifdef CONFIG_PHYS_64BIT
#define fdt_addr_to_cpu(reg) be64_to_cpu(reg)
#define fdt_size_to_cpu(reg) be64_to_cpu(reg)
#define cpu_to_fdt_addr(reg) cpu_to_be64(reg)
#define cpu_to_fdt_size(reg) cpu_to_be64(reg)
typedef fdt64_t fdt_val_t;
#else
#define FDT_ADDR_T_NONE (-1U)
#define fdt_addr_to_cpu(reg) be32_to_cpu(reg)
#define fdt_size_to_cpu(reg) be32_to_cpu(reg)
#define cpu_to_fdt_addr(reg) cpu_to_be32(reg)