Commit be7cd2df authored by Rob Herring's avatar Rob Herring
Browse files

c6x: use common built-in dtb support 



Using the common build support for built-in dtb files just requires
adding a .dtb.o target to obj-y.

The dtb now needs to be copied when unflattened because an init section
is used now.

Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: linux-c6x-dev@linux-c6x.org
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent a91c6145

arch/c6x/boot/dts/Makefile

+1 −10
Original line number Diff line number Diff line
@@ -6,14 +6,5 @@ 
DTC_FLAGS ?= -p 1024



ifneq ($(DTB),)

obj-y += linked_dtb.o

obj-y += $(DTB).dtb.o

endif
 


quiet_cmd_cp = CP      $< $@$2

	cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)



# Generate builtin.dtb from $(DTB).dtb

$(obj)/builtin.dtb: $(obj)/$(DTB).dtb

	$(call if_changed,cp)



$(obj)/linked_dtb.o: $(obj)/builtin.dtb

arch/c6x/boot/dts/linked_dtb.S

deleted100644 → 0
+0 −2
Original line number Diff line number Diff line 
.section __fdt_blob,"a"

.incbin "arch/c6x/boot/dts/builtin.dtb"

arch/c6x/include/asm/sections.h

+0 −1
Original line number Diff line number Diff line
@@ -8,6 +8,5 @@ extern char _vectors_start[]; 
extern char _vectors_end[];



extern char _data_lma[];

extern char _fdt_start[], _fdt_end[];



#endif /* _ASM_C6X_SECTIONS_H */

arch/c6x/kernel/setup.c

+2 −2
Original line number Diff line number Diff line
@@ -270,7 +270,7 @@ int __init c6x_add_memory(phys_addr_t start, unsigned long size) 
notrace void __init machine_init(unsigned long dt_ptr)

{

	void *dtb = __va(dt_ptr);

	void *fdt = _fdt_start;

	void *fdt = __dtb_start;



	/* interrupts must be masked */

	set_creg(IER, 2);
@@ -363,7 +363,7 @@ void __init setup_arch(char **cmdline_p) 
					 memory_end >> PAGE_SHIFT);

	memblock_reserve(memory_start, bootmap_size);



	unflatten_device_tree();

	unflatten_and_copy_device_tree();



	c6x_cache_init();

arch/c6x/kernel/vmlinux.lds.S

+0 −10
Original line number Diff line number Diff line
@@ -90,16 +90,6 @@ SECTIONS 
		*(.switch)

	}



	. = ALIGN (8) ;

	__fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET)

	{

		_fdt_start = . ;	/* place for fdt blob */

		*(__fdt_blob) ;		/* Any link-placed DTB */

		BYTE(0);		/* section always has contents */

	        . = _fdt_start + 0x4000;	/* Pad up to 16kbyte */

		_fdt_end = . ;

	}



	_etext = .;



	/*

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