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devicetree: LINKER_DT_NODE_REGION_NAME added

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Adds a macro to convert a devicetree node to the name of a linker memory
region.

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
This commit is contained in:
Jordan Yates 2021-07-28 20:51:47 +10:00 • committed by Carles Cufí
commit 024ecdd672
1 changed files with 28 additions and 0 deletions
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28
include/linker/devicetree_regions.h
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@ -7,6 +7,34 @@
* Generate memory regions from devicetree nodes.
*/
/**
* @brief Get the linker memory-region name
*
* This attempts to use the zephyr,memory-region property, falling back
* to the node path if it doesn't exist.
*
* Example devicetree fragment:
*
* / {
* soc {
* sram1: memory@2000000 {
* zephyr,memory-region = "MY_NAME";
* };
* sram2: memory@2001000 { ... };
* };
* };
*
* Example usage:
*
* LINKER_DT_NODE_REGION_NAME(DT_NODELABEL(sram1)) // "MY_NAME"
* LINKER_DT_NODE_REGION_NAME(DT_NODELABEL(sram2)) // "/soc/memory@2001000"
*
* @param node_id node identifier
* @return the name of the memory memory region the node will generate
*/
#define LINKER_DT_NODE_REGION_NAME(node_id) \
DT_PROP_OR(node_id, zephyr_memory_region, DT_NODE_PATH(node_id))
/* Declare a memory region */
#define _REGION_DECLARE(name, attr, node) name(attr) : \
ORIGIN = DT_REG_ADDR(node), \