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arm64: setup: drop early FDT pointer helpers

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We no longer need to call into the kernel to map the FDT before calling
into the kernel so let's drop the helpers we added for this.

Signed-off-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
This commit is contained in:
Ard Biesheuvel authored and Will Deacon committed 2022-06-24 17:18:11 +01:00
1 parent aacd149b62
commit 7559d9f975
3 files changed
-20
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arch/arm64/include/asm/setup.h
-3
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@@ -5,9 +5,6 @@
#include <uapi/asm/setup.h>
void *get_early_fdt_ptr(void);
void early_fdt_map(u64 dt_phys);
/*
* These two variables are used in the head.S file.
*/
arch/arm64/kernel/head.S
-2
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@@ -446,8 +446,6 @@ SYM_FUNC_START_LOCAL(__primary_switched)
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
bl kasan_early_init
#endif
mov x0, x21 // pass FDT address in x0
bl early_fdt_map // Try mapping the FDT early
mov x0, x22 // pass FDT address in x0
bl init_feature_override // Parse cpu feature overrides
mov x0, x20
arch/arm64/kernel/setup.c
-15
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@@ -163,21 +163,6 @@ static void __init smp_build_mpidr_hash(void)
pr_warn("Large number of MPIDR hash buckets detected\n");
}
static void *early_fdt_ptr __initdata;
void __init *get_early_fdt_ptr(void)
{
return early_fdt_ptr;
}
asmlinkage void __init early_fdt_map(u64 dt_phys)
{
int fdt_size;
early_fixmap_init();
early_fdt_ptr = fixmap_remap_fdt(dt_phys, &fdt_size, PAGE_KERNEL);
}
static void __init setup_machine_fdt(phys_addr_t dt_phys)
{
int size;