[PATCH 4/6] of/fdt: Populate phys_initrd_start/phys_initrd_size from FDT
From: f.fainelli@gmail.com (Florian Fainelli)
Date: 2018-10-29 23:52:46
Also in:
linux-devicetree, lkml
Subsystem:
arm port, open firmware and flattened device tree, the rest · Maintainers:
Russell King, Rob Herring, Saravana Kannan, Linus Torvalds
If the architecture implements ARCH_HAS_PHYS_INITRD, make the FDT scanning code populate the physical address of the start of the FDT and its size. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- arch/arm/mm/init.c | 2 +- drivers/of/fdt.c | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8f364aa24172..517e95cfb5d2 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c@@ -237,7 +237,7 @@ static void __init arm_initrd_init(void) phys_addr_t start; unsigned long size; - /* FDT scan will populate initrd_start */ + /* FDT scan will populate initrd_start and phys_initrd_start */ if (initrd_start && !phys_initrd_size) { phys_initrd_start = __virt_to_phys(initrd_start); phys_initrd_size = initrd_end - initrd_start;
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 76c83c1ffeda..313cd4f24258 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c@@ -899,6 +899,10 @@ static void __early_init_dt_declare_initrd(unsigned long start, initrd_start = (unsigned long)__va(start); initrd_end = (unsigned long)__va(end); initrd_below_start_ok = 1; +#ifdef CONFIG_ARCH_HAS_PHYS_INITRD + phys_initrd_start = start; + phys_initrd_size = end - start; +#endif } #endif
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2.17.1