From b1ab95c63622e9d9bd0ce685e149034d393afc2e Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 5 Nov 2018 14:54:27 -0800 Subject: 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 Reviewed-by: Mike Rapoport Signed-off-by: Rob Herring --- arch/arm/mm/init.c | 5 ++--- arch/unicore32/mm/init.c | 10 +++++++--- include/linux/initrd.h | 3 +++ init/do_mounts_initrd.c | 3 +++ 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; -- cgit v1.2.3-58-ga151