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dm: util: Add a livetree equivalent API of dm_fdt_pre_reloc()

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This adds a new API dm_ofnode_pre_reloc(), a livetree equivalent
API of dm_fdt_pre_reloc().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2018-10-10 22:06:57 -07:00 committed by Simon Glass
parent 6fe8abcce7
commit e601ab1bb6
2 changed files with 51 additions and 1 deletions
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25
drivers/core/util.c
View File

@ -4,6 +4,7 @@
*/
#include <common.h>
#include <dm/ofnode.h>
#include <dm/util.h>
#include <linux/libfdt.h>
#include <vsprintf.h>
@ -53,3 +54,27 @@ bool dm_fdt_pre_reloc(const void *blob, int offset)
return false;
}
bool dm_ofnode_pre_reloc(ofnode node)
{
if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
return true;
#ifdef CONFIG_TPL_BUILD
if (ofnode_read_bool(node, "u-boot,dm-tpl"))
return true;
#elif defined(CONFIG_SPL_BUILD)
if (ofnode_read_bool(node, "u-boot,dm-spl"))
return true;
#else
/*
* In regular builds individual spl and tpl handling both
* count as handled pre-relocation for later second init.
*/
if (ofnode_read_bool(node, "u-boot,dm-spl") ||
ofnode_read_bool(node, "u-boot,dm-tpl"))
return true;
#endif
return false;
}

27
include/dm/util.h
View File

@ -55,7 +55,7 @@ static inline void dm_dump_devres(void)
* There are 3 settings currently in use
* -
* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
* Existing platforms only use it to indicate nodes needee in
* Existing platforms only use it to indicate nodes needed in
* SPL. Should probably be replaced by u-boot,dm-spl for
* existing platforms.
* @blob: devicetree
@ -65,4 +65,29 @@ static inline void dm_dump_devres(void)
*/
bool dm_fdt_pre_reloc(const void *blob, int offset);
/**
* Check if an of node should be or was bound before relocation.
*
* Devicetree nodes can be marked as needed to be bound
* in the loader stages via special devicetree properties.
*
* Before relocation this function can be used to check if nodes
* are required in either SPL or TPL stages.
*
* After relocation and jumping into the real U-Boot binary
* it is possible to determine if a node was bound in one of
* SPL/TPL stages.
*
* There are 3 settings currently in use
* -
* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
* Existing platforms only use it to indicate nodes needed in
* SPL. Should probably be replaced by u-boot,dm-spl for
* existing platforms.
* @node: of node
*
* Returns true if node is needed in SPL/TL, false otherwise.
*/
bool dm_ofnode_pre_reloc(ofnode node);
#endif