diff options
Diffstat (limited to 'arch/arm/boot/compressed')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/decompress.c | 1 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/efi-header.S | 5 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 21 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/ll_char_wr.S | 9 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/vmlinux.lds.S | 5 |
6 files changed, 22 insertions, 21 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 6114ae6ea466..9219389bbe61 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -132,8 +132,6 @@ endif ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) LDFLAGS_vmlinux += --be8 endif -# ? -LDFLAGS_vmlinux += -p # Report unresolved symbol references LDFLAGS_vmlinux += --no-undefined # Delete all temporary local symbols diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c index c16c1829a5e4..aa075d8372ea 100644 --- a/arch/arm/boot/compressed/decompress.c +++ b/arch/arm/boot/compressed/decompress.c @@ -32,6 +32,7 @@ extern char * strstr(const char * s1, const char *s2); extern size_t strlen(const char *s); extern int memcmp(const void *cs, const void *ct, size_t count); +extern char * strchrnul(const char *, int); #ifdef CONFIG_KERNEL_GZIP #include "../../../../lib/decompress_inflate.c" diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S index c94a88ae834d..a5983588f96b 100644 --- a/arch/arm/boot/compressed/efi-header.S +++ b/arch/arm/boot/compressed/efi-header.S @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2013-2017 Linaro Ltd * Authors: Roy Franz <roy.franz@linaro.org> * Ard Biesheuvel <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/pe.h> diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 6c7ccb428c07..e59d14679fb0 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/boot/compressed/head.S * * Copyright (C) 1996-2002 Russell King * Copyright (C) 2004 Hyok S. Choi (MPU support) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> #include <asm/assembler.h> @@ -1438,7 +1435,21 @@ ENTRY(efi_stub_entry) @ Preserve return value of efi_entry() in r4 mov r4, r0 - bl cache_clean_flush + + @ our cache maintenance code relies on CP15 barrier instructions + @ but since we arrived here with the MMU and caches configured + @ by UEFI, we must check that the CP15BEN bit is set in SCTLR. + @ Note that this bit is RAO/WI on v6 and earlier, so the ISB in + @ the enable path will be executed on v7+ only. + mrc p15, 0, r1, c1, c0, 0 @ read SCTLR + tst r1, #(1 << 5) @ CP15BEN bit set? + bne 0f + orr r1, r1, #(1 << 5) @ CP15 barrier instructions + mcr p15, 0, r1, c1, c0, 0 @ write SCTLR + ARM( .inst 0xf57ff06f @ v7+ isb ) + THUMB( isb ) + +0: bl cache_clean_flush bl cache_off @ Set parameters for booting zImage according to boot protocol diff --git a/arch/arm/boot/compressed/ll_char_wr.S b/arch/arm/boot/compressed/ll_char_wr.S index 8517c8606b4a..1ec8cb2898b1 100644 --- a/arch/arm/boot/compressed/ll_char_wr.S +++ b/arch/arm/boot/compressed/ll_char_wr.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/lib/ll_char_wr.S * * Copyright (C) 1995, 1996 Russell King. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Speedups & 1bpp code (C) 1996 Philip Blundell & Russell King. * * 10-04-96 RMK Various cleanups & reduced register usage. @@ -75,7 +72,7 @@ Lrow4bpplp: tst r1, #7 @ avoid using r7 directly after str r7, [r0, -r5]! subne r1, r1, #1 - ldrneb r7, [r6, r1] + ldrbne r7, [r6, r1] bne Lrow4bpplp ldmfd sp!, {r4 - r7, pc} @@ -103,7 +100,7 @@ Lrow8bpplp: sub r0, r0, r5 @ avoid ip stmia r0, {r4, ip} subne r1, r1, #1 - ldrneb r7, [r6, r1] + ldrbne r7, [r6, r1] bne Lrow8bpplp ldmfd sp!, {r4 - r7, pc} diff --git a/arch/arm/boot/compressed/vmlinux.lds.S b/arch/arm/boot/compressed/vmlinux.lds.S index 2b963d8e76dd..fc7ed03d8b93 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.S +++ b/arch/arm/boot/compressed/vmlinux.lds.S @@ -1,9 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifdef CONFIG_CPU_ENDIAN_BE8 |