of/fdt: Populate phys_initrd_start/phys_initrd_size from FDT

Now that we have central and global variables holding the physical
address and size of the initrd, we can have
early_init_dt_check_for_initrd() populate
phys_initrd_start/phys_initrd_size for us.

This allows us to remove a chunk of code from arch/arm/mm/init.c
introduced with commit 65939301acdb ("arm: set initrd_start/initrd_end
for fdt scan").

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>

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 4386257..a3b6f1f 100644 (file)
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -235,12 +235,6 @@ static void __init arm_initrd_init(void)
        phys_addr_t start;
        unsigned long size;
 
-       /* FDT scan will populate initrd_start */
-       if (initrd_start && !phys_initrd_size) {
-               phys_initrd_start = __virt_to_phys(initrd_start);
-               phys_initrd_size = initrd_end - initrd_start;
-       }
-
        initrd_start = initrd_end = 0;
 
        if (!phys_initrd_size)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index bb532aa..88760a0 100644 (file)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -924,6 +924,8 @@ static void __init early_init_dt_check_for_initrd(unsigned long node)
        end = of_read_number(prop, len/4);
 
        __early_init_dt_declare_initrd(start, end);
+       phys_initrd_start = start;
+       phys_initrd_size = end - start;
 
        pr_debug("initrd_start=0x%llx  initrd_end=0x%llx\n",
                 (unsigned long long)start, (unsigned long long)end);