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authorFlorian Fainelli <f.fainelli@gmail.com>2018-11-05 14:54:27 -0800
committerRob Herring <robh@kernel.org>2018-11-26 15:50:02 -0600
commitb1ab95c63622e9d9bd0ce685e149034d393afc2e (patch)
tree35fd6535f0b8c6934fb86b86754d300c6d7898f8
parentcd5e0fa0837c232f50a17390ce40a953c437a75f (diff)
arch: Make phys_initrd_start and phys_initrd_size global variables
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>
-rw-r--r--arch/arm/mm/init.c5
-rw-r--r--arch/unicore32/mm/init.c10
-rw-r--r--include/linux/initrd.h3
-rw-r--r--init/do_mounts_initrd.c3
4 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 32e4845af2b6..438625764ccd 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -50,9 +50,7 @@ unsigned long __init __clear_cr(unsigned long mask)
}
#endif
-static phys_addr_t phys_initrd_start __initdata = 0;
-static unsigned long phys_initrd_size __initdata = 0;
-
+#ifdef CONFIG_BLK_DEV_INITRD
static int __init early_initrd(char *p)
{
phys_addr_t start;
@@ -89,6 +87,7 @@ static int __init parse_tag_initrd2(const struct tag *tag)
}
__tagtable(ATAG_INITRD2, parse_tag_initrd2);
+#endif
static void __init find_limits(unsigned long *min, unsigned long *max_low,
unsigned long *max_high)
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index cf4eb9481fd6..02aa2c0b295e 100644
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -30,9 +30,7 @@
#include "mm.h"
-static unsigned long phys_initrd_start __initdata = 0x01000000;
-static unsigned long phys_initrd_size __initdata = SZ_8M;
-
+#ifdef CONFIG_BLK_DEV_INITRD
static int __init early_initrd(char *p)
{
unsigned long start, size;
@@ -48,6 +46,7 @@ static int __init early_initrd(char *p)
return 0;
}
early_param("initrd", early_initrd);
+#endif
/*
* This keeps memory configuration data used by a couple memory
@@ -156,6 +155,11 @@ void __init uc32_memblock_init(struct meminfo *mi)
memblock_reserve(__pa(_text), _end - _text);
#ifdef CONFIG_BLK_DEV_INITRD
+ if (!phys_initrd_size) {
+ phys_initrd_start = 0x01000000;
+ phys_initrd_size = SZ_8M;
+ }
+
if (phys_initrd_size) {
memblock_reserve(phys_initrd_start, phys_initrd_size);
diff --git a/include/linux/initrd.h b/include/linux/initrd.h
index 84b423044088..14beaff9b445 100644
--- a/include/linux/initrd.h
+++ b/include/linux/initrd.h
@@ -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;
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index d1a5d885ce13..45865b72f4ea 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -16,6 +16,9 @@ int initrd_below_start_ok;
unsigned int real_root_dev; /* do_proc_dointvec cannot handle kdev_t */
static int __initdata mount_initrd = 1;
+phys_addr_t phys_initrd_start __initdata;
+unsigned long phys_initrd_size __initdata;
+
static int __init no_initrd(char *str)
{
mount_initrd = 0;