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[fdt] Provide fdt_reg() for unsized single-entry regions

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Many region types (e.g. I2C bus addresses) can only ever contain a
single region with no size cells specified.  Provide fdt_reg() to
reduce boilerplate in this common use case.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-08-07 15:41:42 +01:00
parent 9d4a2ee353
commit 88ba011764
3 changed files with 55 additions and 7 deletions
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3
src/include/ipxe/fdt.h
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@@ -190,6 +190,8 @@ extern int fdt_u32 ( struct fdt *fdt, unsigned int offset, const char *name,
extern uint32_t fdt_phandle ( struct fdt *fdt, unsigned int offset );
extern void fdt_reg_cells ( struct fdt *fdt, unsigned int offset,
struct fdt_reg_cells *regs );
extern int fdt_parent_reg_cells ( struct fdt *fdt, unsigned int offset,
struct fdt_reg_cells *regs );
extern int fdt_reg_count ( struct fdt *fdt, unsigned int offset,
struct fdt_reg_cells *regs );
extern int fdt_reg_address ( struct fdt *fdt, unsigned int offset,
@@ -198,6 +200,7 @@ extern int fdt_reg_address ( struct fdt *fdt, unsigned int offset,
extern int fdt_reg_size ( struct fdt *fdt, unsigned int offset,
struct fdt_reg_cells *regs, unsigned int index,
uint64_t *size );
extern int fdt_reg ( struct fdt *fdt, unsigned int offset, uint64_t *region );
extern int fdt_mac ( struct fdt *fdt, unsigned int offset,
struct net_device *netdev );
extern int fdt_parse ( struct fdt *fdt, struct fdt_header *hdr,