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https://github.com/brain-hackers/u-boot-brain
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dm: util: Add a livetree equivalent API of dm_fdt_pre_reloc()
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>
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@ -4,6 +4,7 @@
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*/
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*/
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#include <common.h>
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#include <common.h>
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#include <dm/ofnode.h>
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#include <dm/util.h>
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#include <dm/util.h>
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#include <linux/libfdt.h>
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#include <linux/libfdt.h>
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#include <vsprintf.h>
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#include <vsprintf.h>
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@ -53,3 +54,27 @@ bool dm_fdt_pre_reloc(const void *blob, int offset)
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return false;
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return false;
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}
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}
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bool dm_ofnode_pre_reloc(ofnode node)
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{
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if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
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return true;
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#ifdef CONFIG_TPL_BUILD
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if (ofnode_read_bool(node, "u-boot,dm-tpl"))
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return true;
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#elif defined(CONFIG_SPL_BUILD)
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if (ofnode_read_bool(node, "u-boot,dm-spl"))
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return true;
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#else
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/*
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* In regular builds individual spl and tpl handling both
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* count as handled pre-relocation for later second init.
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*/
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if (ofnode_read_bool(node, "u-boot,dm-spl") ||
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ofnode_read_bool(node, "u-boot,dm-tpl"))
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return true;
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#endif
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return false;
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}
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@ -55,7 +55,7 @@ static inline void dm_dump_devres(void)
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* There are 3 settings currently in use
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* There are 3 settings currently in use
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* -
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* -
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* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
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* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
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* Existing platforms only use it to indicate nodes needee in
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* Existing platforms only use it to indicate nodes needed in
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* SPL. Should probably be replaced by u-boot,dm-spl for
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* SPL. Should probably be replaced by u-boot,dm-spl for
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* existing platforms.
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* existing platforms.
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* @blob: devicetree
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* @blob: devicetree
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@ -65,4 +65,29 @@ static inline void dm_dump_devres(void)
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*/
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*/
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bool dm_fdt_pre_reloc(const void *blob, int offset);
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bool dm_fdt_pre_reloc(const void *blob, int offset);
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/**
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* Check if an of node should be or was bound before relocation.
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*
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* Devicetree nodes can be marked as needed to be bound
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* in the loader stages via special devicetree properties.
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*
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* Before relocation this function can be used to check if nodes
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* are required in either SPL or TPL stages.
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*
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* After relocation and jumping into the real U-Boot binary
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* it is possible to determine if a node was bound in one of
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* SPL/TPL stages.
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*
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* There are 3 settings currently in use
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* -
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* - u-boot,dm-pre-reloc: legacy and indicates any of TPL or SPL
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* Existing platforms only use it to indicate nodes needed in
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* SPL. Should probably be replaced by u-boot,dm-spl for
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* existing platforms.
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* @node: of node
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*
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* Returns true if node is needed in SPL/TL, false otherwise.
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*/
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bool dm_ofnode_pre_reloc(ofnode node);
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#endif
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#endif
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