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arch: Make phys_initrd_start and phys_initrd_size global variables

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Make phys_initrd_start and phys_initrd_size global variables declared in
init/do_mounts_initrd.c such that we can later have generic code in
drivers/of/fdt.c populate those variables for us.

This requires both the ARM and unicore32 implementations to be properly
guarded against CONFIG_BLK_DEV_INITRD, and also initialize the variables
to the expected default values (unicore32).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Florian Fainelli
2018-11-05 14:54:27 -08:00
committed by Rob Herring
parent cd5e0fa083
commit b1ab95c636
4 changed files with 15 additions and 6 deletions
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3
include/linux/initrd.h
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@@ -21,4 +21,7 @@ extern int initrd_below_start_ok;
extern unsigned long initrd_start, initrd_end;
extern void free_initrd_mem(unsigned long, unsigned long);
extern phys_addr_t phys_initrd_start;
extern unsigned long phys_initrd_size;
extern unsigned int real_root_dev;