diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/boot/compressed | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/boot/compressed')
-rw-r--r-- | arch/mips/boot/compressed/Makefile | 219 | ||||
-rw-r--r-- | arch/mips/boot/compressed/ashldi3.c | 2 | ||||
-rw-r--r-- | arch/mips/boot/compressed/bswapdi.c | 2 | ||||
-rw-r--r-- | arch/mips/boot/compressed/bswapsi.c | 2 | ||||
-rw-r--r-- | arch/mips/boot/compressed/calc_vmlinuz_load_addr.c | 54 | ||||
-rw-r--r-- | arch/mips/boot/compressed/clz_ctz.c | 2 | ||||
-rw-r--r-- | arch/mips/boot/compressed/dbg.c | 37 | ||||
-rw-r--r-- | arch/mips/boot/compressed/decompress.c | 141 | ||||
-rw-r--r-- | arch/mips/boot/compressed/dummy.c | 4 | ||||
-rw-r--r-- | arch/mips/boot/compressed/head.S | 52 | ||||
-rw-r--r-- | arch/mips/boot/compressed/ld.script | 60 | ||||
-rw-r--r-- | arch/mips/boot/compressed/string.c | 46 | ||||
-rw-r--r-- | arch/mips/boot/compressed/uart-16550.c | 52 | ||||
-rw-r--r-- | arch/mips/boot/compressed/uart-alchemy.c | 7 | ||||
-rw-r--r-- | arch/mips/boot/compressed/uart-ath79.c | 2 | ||||
-rw-r--r-- | arch/mips/boot/compressed/uart-prom.c | 7 |
16 files changed, 689 insertions, 0 deletions
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile new file mode 100644 index 000000000..6cc28173b --- /dev/null +++ b/arch/mips/boot/compressed/Makefile @@ -0,0 +1,219 @@ +# +# This file is subject to the terms and conditions of the GNU General Public +# License. +# +# Adapted for MIPS Pete Popov, Dan Malek +# +# Copyright (C) 1994 by Linus Torvalds +# Adapted for PowerPC by Gary Thomas +# modified by Cort (cort@cs.nmt.edu) +# +# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University +# Author: Wu Zhangjin <wuzhangjin@gmail.com> +# + +include $(srctree)/arch/mips/Kbuild.platforms + +# set the default size of the mallocing area for decompressing +BOOT_HEAP_SIZE := 0x400000 + +# Disable Function Tracer +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS)) + +KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) + +# Disable lq/sq in zboot +ifdef CONFIG_CPU_LOONGSON64 +KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2 +endif + +KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \ + -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" + +KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ + -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ + -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS) + +# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. +KCOV_INSTRUMENT := n +GCOV_PROFILE := n +UBSAN_SANITIZE := n +KCSAN_SANITIZE := n + +# decompressor objects (linked with vmlinuz) +vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o + +ifdef CONFIG_DEBUG_ZBOOT +vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o +vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o +vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o +vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o +vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o +endif + +vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o + +vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o + +targets := $(notdir $(vmlinuzobjs-y)) + +targets += vmlinux.bin + +OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S + +$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE + $(call if_changed,objcopy) + +tool_$(CONFIG_KERNEL_GZIP) = gzip +tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size +tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size +tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size +tool_$(CONFIG_KERNEL_LZO) = lzo_with_size +tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size +tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size + +targets += vmlinux.bin.z + +$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE + $(call if_changed,$(tool_y)) + +targets += piggy.o dummy.o + +OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ + --set-section-flags=.image=contents,alloc,load,readonly,data + +$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE + $(call if_changed,objcopy) + +HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE) + +# Calculate the load address of the compressed kernel image +hostprogs := calc_vmlinuz_load_addr + +ifneq (0x0,$(CONFIG_ZBOOT_LOAD_ADDRESS)) +zload-y = $(CONFIG_ZBOOT_LOAD_ADDRESS) +endif + +ifneq ($(zload-y),) +VMLINUZ_LOAD_ADDRESS := $(zload-y) +else +VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ + $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS)) +endif +UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) + +vmlinuzobjs-y += $(obj)/piggy.o + +targets += ../../../../vmlinuz + +quiet_cmd_zld = LD $@ + cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ +quiet_cmd_strip = STRIP $@ + cmd_strip = $(STRIP) -s $@ + +$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr + $(call cmd,zld) + $(call cmd,strip) + +objboot := $(objtree)/arch/mips/boot + +$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE + +# +# Some DECstations need all possible sections of an ECOFF executable +# +ifdef CONFIG_MACH_DECSTATION + e2eflag := -a +endif + +# elf2ecoff can only handle 32bit image +hostprogs += ../elf2ecoff + +ifdef CONFIG_32BIT + VMLINUZ = $(objtree)/vmlinuz +else + VMLINUZ = $(objboot)/vmlinuz.32 +endif + +targets += ../vmlinuz.32 + +quiet_cmd_32 = OBJCOPY $@ + cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ + +$(objboot)/vmlinuz.32: $(objtree)/vmlinuz + $(call cmd,32) + +targets += ../vmlinuz.ecoff + +quiet_cmd_ecoff = ECOFF $@ + cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) + +$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ) + $(call cmd,ecoff) + +targets += ../vmlinuz.bin + +OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary + +$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz + $(call cmd,objcopy) + +targets += ../vmlinuz.srec + +OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec + +$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz + $(call cmd,objcopy) + +targets += ../uzImage.bin + +$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE + $(call if_changed,uimage,none) + +# +# Flattened Image Tree (.itb) image +# + +ifeq ($(ADDR_BITS),32) +itb_addr_cells = 1 +endif +ifeq ($(ADDR_BITS),64) +itb_addr_cells = 2 +endif + +targets += ../vmlinuz.its.S + +quiet_cmd_its_cat = CAT $@ + cmd_its_cat = cat $(real-prereqs) >$@ + +$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE + $(call if_changed,its_cat) + +targets += ../vmlinuz.its + +quiet_cmd_cpp_its_S = ITS $@ + cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \ + -DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \ + -DVMLINUX_BINARY="\"$(2)\"" \ + -DVMLINUX_COMPRESSION="\"none\"" \ + -DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ + -DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \ + -DADDR_BITS=$(ADDR_BITS) \ + -DADDR_CELLS=$(itb_addr_cells) + +$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE + $(call if_changed,cpp_its_S,vmlinuz.bin) + +targets += ../vmlinuz.itb + +quiet_cmd_itb-image = ITB $@ + cmd_itb-image = \ + env PATH="$(objtree)/scripts/dtc:$(PATH)" \ + $(BASH) $(MKIMAGE) \ + -D "-I dts -O dtb -p 500 \ + --include $(objtree)/arch/mips \ + --warning no-unit_address_vs_reg" \ + -f $(2) $@ + +$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE + $(call if_changed,itb-image,$<) diff --git a/arch/mips/boot/compressed/ashldi3.c b/arch/mips/boot/compressed/ashldi3.c new file mode 100644 index 000000000..f7bf6a7aa --- /dev/null +++ b/arch/mips/boot/compressed/ashldi3.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../../../lib/ashldi3.c" diff --git a/arch/mips/boot/compressed/bswapdi.c b/arch/mips/boot/compressed/bswapdi.c new file mode 100644 index 000000000..acb28aebb --- /dev/null +++ b/arch/mips/boot/compressed/bswapdi.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../lib/bswapdi.c" diff --git a/arch/mips/boot/compressed/bswapsi.c b/arch/mips/boot/compressed/bswapsi.c new file mode 100644 index 000000000..fdb9c6476 --- /dev/null +++ b/arch/mips/boot/compressed/bswapsi.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../lib/bswapsi.c" diff --git a/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c new file mode 100644 index 000000000..080b926d2 --- /dev/null +++ b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2010 "Wu Zhangjin" <wuzhangjin@gmail.com> + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <linux/sizes.h> + +int main(int argc, char *argv[]) +{ + unsigned long long vmlinux_size, vmlinux_load_addr, vmlinuz_load_addr; + struct stat sb; + + if (argc != 3) { + fprintf(stderr, "Usage: %s <pathname> <vmlinux_load_addr>\n", + argv[0]); + return EXIT_FAILURE; + } + + if (stat(argv[1], &sb) == -1) { + perror("stat"); + return EXIT_FAILURE; + } + + /* Convert hex characters to dec number */ + errno = 0; + if (sscanf(argv[2], "%llx", &vmlinux_load_addr) != 1) { + if (errno != 0) + perror("sscanf"); + else + fprintf(stderr, "No matching characters\n"); + + return EXIT_FAILURE; + } + + vmlinux_size = (uint64_t)sb.st_size; + vmlinuz_load_addr = vmlinux_load_addr + vmlinux_size; + + /* + * Align with 64KB: KEXEC needs load sections to be aligned to PAGE_SIZE, + * which may be as large as 64KB depending on the kernel configuration. + */ + + vmlinuz_load_addr += (SZ_64K - vmlinux_size % SZ_64K); + + printf("0x%llx\n", vmlinuz_load_addr); + + return EXIT_SUCCESS; +} diff --git a/arch/mips/boot/compressed/clz_ctz.c b/arch/mips/boot/compressed/clz_ctz.c new file mode 100644 index 000000000..b4a1b6eb2 --- /dev/null +++ b/arch/mips/boot/compressed/clz_ctz.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../../../lib/clz_ctz.c" diff --git a/arch/mips/boot/compressed/dbg.c b/arch/mips/boot/compressed/dbg.c new file mode 100644 index 000000000..f6728a8fd --- /dev/null +++ b/arch/mips/boot/compressed/dbg.c @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * MIPS-specific debug support for pre-boot environment + * + * NOTE: putc() is board specific, if your board have a 16550 compatible uart, + * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you + * need to implement your own putc(). + */ +#include <linux/compiler.h> +#include <linux/types.h> + +void __weak putc(char c) +{ +} + +void puts(const char *s) +{ + char c; + while ((c = *s++) != '\0') { + putc(c); + if (c == '\n') + putc('\r'); + } +} + +void puthex(unsigned long long val) +{ + + unsigned char buf[10]; + int i; + for (i = 7; i >= 0; i--) { + buf[i] = "0123456789ABCDEF"[val & 0x0F]; + val >>= 4; + } + buf[8] = '\0'; + puts(buf); +} diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c new file mode 100644 index 000000000..c5dd41525 --- /dev/null +++ b/arch/mips/boot/compressed/decompress.c @@ -0,0 +1,141 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2001 MontaVista Software Inc. + * Author: Matt Porter <mporter@mvista.com> + * + * Copyright (C) 2009 Lemote, Inc. + * Author: Wu Zhangjin <wuzhangjin@gmail.com> + */ + +#define DISABLE_BRANCH_PROFILING + +#define __NO_FORTIFY +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/libfdt.h> + +#include <asm/addrspace.h> +#include <asm/unaligned.h> +#include <asm-generic/vmlinux.lds.h> + +/* + * These two variables specify the free mem region + * that can be used for temporary malloc area + */ +unsigned long free_mem_ptr; +unsigned long free_mem_end_ptr; + +/* The linker tells us where the image is. */ +extern unsigned char __image_begin[], __image_end[]; + +/* debug interfaces */ +#ifdef CONFIG_DEBUG_ZBOOT +extern void puts(const char *s); +extern void puthex(unsigned long long val); +#else +#define puts(s) do {} while (0) +#define puthex(val) do {} while (0) +#endif + +extern char __appended_dtb[]; + +void error(char *x) +{ + puts("\n\n"); + puts(x); + puts("\n\n -- System halted"); + + while (1) + ; /* Halt */ +} + +/* activate the code for pre-boot environment */ +#define STATIC static + +#ifdef CONFIG_KERNEL_GZIP +#include "../../../../lib/decompress_inflate.c" +#endif + +#ifdef CONFIG_KERNEL_BZIP2 +#include "../../../../lib/decompress_bunzip2.c" +#endif + +#ifdef CONFIG_KERNEL_LZ4 +#include "../../../../lib/decompress_unlz4.c" +#endif + +#ifdef CONFIG_KERNEL_LZMA +#include "../../../../lib/decompress_unlzma.c" +#endif + +#ifdef CONFIG_KERNEL_LZO +#include "../../../../lib/decompress_unlzo.c" +#endif + +#ifdef CONFIG_KERNEL_XZ +#include "../../../../lib/decompress_unxz.c" +#endif + +#ifdef CONFIG_KERNEL_ZSTD +#include "../../../../lib/decompress_unzstd.c" +#endif + +const unsigned long __stack_chk_guard = 0x000a0dff; + +void __stack_chk_fail(void) +{ + error("stack-protector: Kernel stack is corrupted\n"); +} + +void decompress_kernel(unsigned long boot_heap_start) +{ + unsigned long zimage_start, zimage_size; + + zimage_start = (unsigned long)(__image_begin); + zimage_size = (unsigned long)(__image_end) - + (unsigned long)(__image_begin); + + puts("zimage at: "); + puthex(zimage_start); + puts(" "); + puthex(zimage_size + zimage_start); + puts("\n"); + + /* This area are prepared for mallocing when decompressing */ + free_mem_ptr = boot_heap_start; + free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE; + + /* Display standard Linux/MIPS boot prompt */ + puts("Uncompressing Linux at load address "); + puthex(VMLINUX_LOAD_ADDRESS_ULL); + puts("\n"); + + /* Decompress the kernel with according algorithm */ + __decompress((char *)zimage_start, zimage_size, 0, 0, + (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, 0, error); + + if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) && + fdt_magic((void *)&__appended_dtb) == FDT_MAGIC) { + unsigned int image_size, dtb_size; + + dtb_size = fdt_totalsize((void *)&__appended_dtb); + + /* last four bytes is always image size in little endian */ + image_size = get_unaligned_le32((void *)__image_end - 4); + + /* The device tree's address must be properly aligned */ + image_size = ALIGN(image_size, STRUCT_ALIGNMENT); + + puts("Copy device tree to address "); + puthex(VMLINUX_LOAD_ADDRESS_ULL + image_size); + puts("\n"); + + /* copy dtb to where the booted kernel will expect it */ + memcpy((void *)VMLINUX_LOAD_ADDRESS_ULL + image_size, + __appended_dtb, dtb_size); + } + + /* FIXME: should we flush cache here? */ + puts("Now, booting the kernel...\n"); +} diff --git a/arch/mips/boot/compressed/dummy.c b/arch/mips/boot/compressed/dummy.c new file mode 100644 index 000000000..31dbf45bf --- /dev/null +++ b/arch/mips/boot/compressed/dummy.c @@ -0,0 +1,4 @@ +int main(void) +{ + return 0; +} diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/head.S new file mode 100644 index 000000000..5795d0af1 --- /dev/null +++ b/arch/mips/boot/compressed/head.S @@ -0,0 +1,52 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994, 1995 Waldorf Electronics + * Written by Ralf Baechle and Andreas Busse + * Copyright (C) 1995 - 1999 Ralf Baechle + * Copyright (C) 1996 Paul M. Antoine + * Modified for DECStation and hence R3000 support by Paul M. Antoine + * Further modifications by David S. Miller and Harald Koerfgen + * Copyright (C) 1999 Silicon Graphics, Inc. + */ + +#include <asm/asm.h> +#include <asm/regdef.h> + + LEAF(start) + /* Save boot rom start args */ + move s0, a0 + move s1, a1 + move s2, a2 + move s3, a3 + + /* Clear BSS */ + PTR_LA a0, _edata + PTR_LA a2, _end +1: sw zero, 0(a0) + addiu a0, a0, 4 + bne a2, a0, 1b + + PTR_LA a0, (.heap) /* heap address */ + PTR_LA sp, (.stack + 8192) /* stack address */ + + PTR_LA t9, decompress_kernel + jalr t9 + +2: + move a0, s0 + move a1, s1 + move a2, s2 + move a3, s3 + PTR_LI t9, KERNEL_ENTRY + jalr t9 + +3: + b 3b + + END(start) + + .comm .heap,BOOT_HEAP_SIZE,4 + .comm .stack,4096*2,4 diff --git a/arch/mips/boot/compressed/ld.script b/arch/mips/boot/compressed/ld.script new file mode 100644 index 000000000..0ebb66727 --- /dev/null +++ b/arch/mips/boot/compressed/ld.script @@ -0,0 +1,60 @@ +/* + * ld.script for compressed kernel support of MIPS + * + * Copyright (C) 2009 Lemote Inc. + * Author: Wu Zhangjin <wuzhanjing@gmail.com> + * Copyright (C) 2010 "Wu Zhangjin" <wuzhanjing@gmail.com> + */ + +OUTPUT_ARCH(mips) +ENTRY(start) +PHDRS { + text PT_LOAD FLAGS(7); /* RWX */ +} +SECTIONS +{ + /* Text and read-only data */ + /* . = VMLINUZ_LOAD_ADDRESS; */ + .text : { + *(.text) + *(.rodata) + }: text + /* End of text section */ + + /* Writable data */ + .data : { + *(.data) + /* Put the compressed image here */ + __image_begin = .; + *(.image) + __image_end = .; + CONSTRUCTORS + . = ALIGN(16); + } + + .appended_dtb : { + __appended_dtb = .; + /* leave space for appended DTB */ + . += 0x100000; + } + + _edata = .; + /* End of data section */ + + /* BSS */ + .bss : { + *(.bss) + } + . = ALIGN(16); + _end = .; + + /* Sections to be discarded */ + /DISCARD/ : { + *(.MIPS.options) + *(.options) + *(.pdr) + *(.reginfo) + *(.comment) + *(.note) + } +} diff --git a/arch/mips/boot/compressed/string.c b/arch/mips/boot/compressed/string.c new file mode 100644 index 000000000..0b593b709 --- /dev/null +++ b/arch/mips/boot/compressed/string.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * arch/mips/boot/compressed/string.c + * + * Very small subset of simple string routines + */ + +#include <linux/compiler_attributes.h> +#include <linux/types.h> + +void *memcpy(void *dest, const void *src, size_t n) +{ + int i; + const char *s = src; + char *d = dest; + + for (i = 0; i < n; i++) + d[i] = s[i]; + return dest; +} + +void *memset(void *s, int c, size_t n) +{ + int i; + char *ss = s; + + for (i = 0; i < n; i++) + ss[i] = c; + return s; +} + +void * __weak memmove(void *dest, const void *src, size_t n) +{ + unsigned int i; + const char *s = src; + char *d = dest; + + if ((uintptr_t)dest < (uintptr_t)src) { + for (i = 0; i < n; i++) + d[i] = s[i]; + } else { + for (i = n; i > 0; i--) + d[i - 1] = s[i - 1]; + } + return dest; +} diff --git a/arch/mips/boot/compressed/uart-16550.c b/arch/mips/boot/compressed/uart-16550.c new file mode 100644 index 000000000..96d28f211 --- /dev/null +++ b/arch/mips/boot/compressed/uart-16550.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * 16550 compatible uart based serial debug support for zboot + */ + +#include <linux/types.h> +#include <linux/serial_reg.h> + +#include <asm/addrspace.h> + +#if defined(CONFIG_MACH_LOONGSON64) || defined(CONFIG_MIPS_MALTA) +#define UART_BASE 0x1fd003f8 +#define PORT(offset) (CKSEG1ADDR(UART_BASE) + (offset)) +#endif + +#ifdef CONFIG_AR7 +#include <ar7.h> +#define PORT(offset) (CKSEG1ADDR(AR7_REGS_UART0) + (4 * offset)) +#endif + +#ifdef CONFIG_MACH_INGENIC +#define INGENIC_UART_BASE_ADDR (0x10030000 + 0x1000 * CONFIG_ZBOOT_INGENIC_UART) +#define PORT(offset) (CKSEG1ADDR(INGENIC_UART_BASE_ADDR) + (4 * offset)) +#endif + +#ifndef IOTYPE +#define IOTYPE char +#endif + +#ifndef PORT +#error please define the serial port address for your own machine +#endif + +static inline unsigned int serial_in(int offset) +{ + return *((volatile IOTYPE *)PORT(offset)) & 0xFF; +} + +static inline void serial_out(int offset, int value) +{ + *((volatile IOTYPE *)PORT(offset)) = value & 0xFF; +} + +void putc(char c) +{ + int timeout = 1000000; + + while (((serial_in(UART_LSR) & UART_LSR_THRE) == 0) && (timeout-- > 0)) + ; + + serial_out(UART_TX, c); +} diff --git a/arch/mips/boot/compressed/uart-alchemy.c b/arch/mips/boot/compressed/uart-alchemy.c new file mode 100644 index 000000000..8ec63011e --- /dev/null +++ b/arch/mips/boot/compressed/uart-alchemy.c @@ -0,0 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <asm/mach-au1x00/au1000.h> + +void putc(char c) +{ + alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); +} diff --git a/arch/mips/boot/compressed/uart-ath79.c b/arch/mips/boot/compressed/uart-ath79.c new file mode 100644 index 000000000..d68682092 --- /dev/null +++ b/arch/mips/boot/compressed/uart-ath79.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../ath79/early_printk.c" diff --git a/arch/mips/boot/compressed/uart-prom.c b/arch/mips/boot/compressed/uart-prom.c new file mode 100644 index 000000000..a8a0a32e0 --- /dev/null +++ b/arch/mips/boot/compressed/uart-prom.c @@ -0,0 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <asm/setup.h> + +void putc(char c) +{ + prom_putchar(c); +} |