From 57beb9bd18fca085e6627526d64d68b6080f605c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 11 Aug 2021 10:51:05 +0200 Subject: arm64: kdump: Remove custom linux,elfcorehdr handling Remove the architecture-specific code for handling the "linux,elfcorehdr" property under the "/chosen" node in DT, as the platform-agnostic handling in the FDT core code already takes care of this. Signed-off-by: Geert Uytterhoeven Acked-by: Catalin Marinas Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/3b8f801f9b92066855e87f3079fafc153ab20f69.1628670468.git.geert+renesas@glider.be --- arch/arm64/mm/init.c | 53 ---------------------------------------------------- 1 file changed, 53 deletions(-) (limited to 'arch/arm64/mm/init.c') diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 8490ed2917ff..bac4f06bb7d9 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -124,57 +124,6 @@ static void __init reserve_crashkernel(void) } #endif /* CONFIG_KEXEC_CORE */ -#ifdef CONFIG_CRASH_DUMP -static int __init early_init_dt_scan_elfcorehdr(unsigned long node, - const char *uname, int depth, void *data) -{ - const __be32 *reg; - int len; - - if (depth != 1 || strcmp(uname, "chosen") != 0) - return 0; - - reg = of_get_flat_dt_prop(node, "linux,elfcorehdr", &len); - if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells))) - return 1; - - elfcorehdr_addr = dt_mem_next_cell(dt_root_addr_cells, ®); - elfcorehdr_size = dt_mem_next_cell(dt_root_size_cells, ®); - - return 1; -} - -/* - * reserve_elfcorehdr() - reserves memory for elf core header - * - * This function reserves the memory occupied by an elf core header - * described in the device tree. This region contains all the - * information about primary kernel's core image and is used by a dump - * capture kernel to access the system memory on primary kernel. - */ -static void __init reserve_elfcorehdr(void) -{ - of_scan_flat_dt(early_init_dt_scan_elfcorehdr, NULL); - - if (!elfcorehdr_size) - return; - - if (memblock_is_region_reserved(elfcorehdr_addr, elfcorehdr_size)) { - pr_warn("elfcorehdr is overlapped\n"); - return; - } - - memblock_reserve(elfcorehdr_addr, elfcorehdr_size); - - pr_info("Reserving %lldKB of memory at 0x%llx for elfcorehdr\n", - elfcorehdr_size >> 10, elfcorehdr_addr); -} -#else -static void __init reserve_elfcorehdr(void) -{ -} -#endif /* CONFIG_CRASH_DUMP */ - /* * Return the maximum physical address for a zone accessible by the given bits * limit. If DRAM starts above 32-bit, expand the zone to the maximum @@ -395,8 +344,6 @@ void __init arm64_memblock_init(void) early_init_fdt_scan_reserved_mem(); - reserve_elfcorehdr(); - high_memory = __va(memblock_end_of_DRAM() - 1) + 1; } -- cgit