From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/parisc/boot/compressed/.gitignore | 4 + arch/parisc/boot/compressed/Makefile | 75 ++++++ arch/parisc/boot/compressed/firmware.c | 2 + arch/parisc/boot/compressed/head.S | 85 +++++++ arch/parisc/boot/compressed/misc.c | 370 ++++++++++++++++++++++++++++++ arch/parisc/boot/compressed/real2.S | 2 + arch/parisc/boot/compressed/vmlinux.lds.S | 106 +++++++++ arch/parisc/boot/compressed/vmlinux.scr | 10 + 8 files changed, 654 insertions(+) create mode 100644 arch/parisc/boot/compressed/.gitignore create mode 100644 arch/parisc/boot/compressed/Makefile create mode 100644 arch/parisc/boot/compressed/firmware.c create mode 100644 arch/parisc/boot/compressed/head.S create mode 100644 arch/parisc/boot/compressed/misc.c create mode 100644 arch/parisc/boot/compressed/real2.S create mode 100644 arch/parisc/boot/compressed/vmlinux.lds.S create mode 100644 arch/parisc/boot/compressed/vmlinux.scr (limited to 'arch/parisc/boot/compressed') diff --git a/arch/parisc/boot/compressed/.gitignore b/arch/parisc/boot/compressed/.gitignore new file mode 100644 index 0000000000..a5839aa167 --- /dev/null +++ b/arch/parisc/boot/compressed/.gitignore @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +sizes.h +vmlinux +vmlinux.lds diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile new file mode 100644 index 0000000000..a294a1b58e --- /dev/null +++ b/arch/parisc/boot/compressed/Makefile @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# linux/arch/parisc/boot/compressed/Makefile +# +# create a compressed self-extracting vmlinux image from the original vmlinux +# + +KCOV_INSTRUMENT := n +GCOV_PROFILE := n +UBSAN_SANITIZE := n + +OBJECTS := head.o real2.o firmware.o misc.o piggy.o +targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 +targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 +targets += $(OBJECTS) sizes.h + +KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER +KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING +KBUILD_CFLAGS += -fno-strict-aliasing +KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -fno-builtin-printf +KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs -Os +ifndef CONFIG_64BIT +KBUILD_CFLAGS += -mfast-indirect-calls +endif + +LDFLAGS_vmlinux := -X -e startup --as-needed -T +$(obj)/vmlinux: $(obj)/vmlinux.lds $(addprefix $(obj)/, $(OBJECTS)) $(LIBGCC) FORCE + $(call if_changed,ld) + +sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\|parisc_kernel_start\)$$/\#define SZ\2 0x\1/p' + +quiet_cmd_sizes = GEN $@ + cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@ + +$(obj)/sizes.h: vmlinux FORCE + $(call if_changed,sizes) + +AFLAGS_head.o += -I$(objtree)/$(obj) -DBOOTLOADER +$(obj)/head.o: $(obj)/sizes.h + +CFLAGS_misc.o += -I$(objtree)/$(obj) +$(obj)/misc.o: $(obj)/sizes.h + +AFLAGS_real2.o += -DBOOTLOADER + +CPPFLAGS_vmlinux.lds += -I$(objtree)/$(obj) -DBOOTLOADER +$(obj)/vmlinux.lds: $(obj)/sizes.h + +OBJCOPYFLAGS_vmlinux.bin := -R .comment -R .note -S +$(obj)/vmlinux.bin: vmlinux FORCE + $(call if_changed,objcopy) + +suffix-$(CONFIG_KERNEL_GZIP) := gz +suffix-$(CONFIG_KERNEL_BZIP2) := bz2 +suffix-$(CONFIG_KERNEL_LZ4) := lz4 +suffix-$(CONFIG_KERNEL_LZMA) := lzma +suffix-$(CONFIG_KERNEL_LZO) := lzo +suffix-$(CONFIG_KERNEL_XZ) := xz + +$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE + $(call if_changed,gzip) +$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE + $(call if_changed,bzip2_with_size) +$(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE + $(call if_changed,lz4_with_size) +$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE + $(call if_changed,lzma_with_size) +$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE + $(call if_changed,lzo_with_size) +$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE + $(call if_changed,xzkern_with_size) + +LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T +$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE + $(call if_changed,ld) diff --git a/arch/parisc/boot/compressed/firmware.c b/arch/parisc/boot/compressed/firmware.c new file mode 100644 index 0000000000..16a07137fe --- /dev/null +++ b/arch/parisc/boot/compressed/firmware.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "../../kernel/firmware.c" diff --git a/arch/parisc/boot/compressed/head.S b/arch/parisc/boot/compressed/head.S new file mode 100644 index 0000000000..e8b798fd0c --- /dev/null +++ b/arch/parisc/boot/compressed/head.S @@ -0,0 +1,85 @@ +/* + * Startup glue code to uncompress the kernel + * + * (C) 2017 Helge Deller + */ + +#include +#include +#include +#include +#include +#include +#include +#include "sizes.h" + +#define BOOTADDR(x) (x) + +#ifndef CONFIG_64BIT + .import $global$ /* forward declaration */ +#endif /*!CONFIG_64BIT*/ + + __HEAD + +ENTRY(startup) + .level PA_ASM_LEVEL + +#define PSW_W_SM 0x200 +#define PSW_W_BIT 36 + + ;! nuke the W bit, saving original value + .level 2.0 + rsm PSW_W_SM, %r1 + + .level 1.1 + extrw,u %r1, PSW_W_BIT-32, 1, %r1 + copy %r1, %arg0 + + /* Make sure sr4-sr7 are set to zero for the kernel address space */ + mtsp %r0,%sr4 + mtsp %r0,%sr5 + mtsp %r0,%sr6 + mtsp %r0,%sr7 + + /* Clear BSS */ + + .import _bss,data + .import _ebss,data + + load32 BOOTADDR(_bss),%r3 + load32 BOOTADDR(_ebss),%r4 + ldo FRAME_SIZE(%r4),%sp /* stack at end of bss */ +$bss_loop: + cmpb,<<,n %r3,%r4,$bss_loop + stw,ma %r0,4(%r3) + + /* Initialize the global data pointer */ + loadgp + + /* arg0..arg4 were set by palo. */ + copy %arg1, %r6 /* command line */ + copy %arg2, %r7 /* rd-start */ + copy %arg3, %r8 /* rd-end */ + load32 BOOTADDR(decompress_kernel),%r3 + +#ifdef CONFIG_64BIT + .level PA_ASM_LEVEL + ssm PSW_W_SM, %r0 /* set W-bit */ + depdi 0, 31, 32, %r3 +#endif + load32 BOOTADDR(startup_continue), %r2 + bv,n 0(%r3) + +startup_continue: +#ifdef CONFIG_64BIT + .level PA_ASM_LEVEL + rsm PSW_W_SM, %r0 /* clear W-bit */ +#endif + + load32 KERNEL_BINARY_TEXT_START, %arg0 /* free mem */ + copy %r6, %arg1 /* command line */ + copy %r7, %arg2 /* rd-start */ + copy %r8, %arg3 /* rd-end */ + + bv,n 0(%ret0) +END(startup) diff --git a/arch/parisc/boot/compressed/misc.c b/arch/parisc/boot/compressed/misc.c new file mode 100644 index 0000000000..d389359e22 --- /dev/null +++ b/arch/parisc/boot/compressed/misc.c @@ -0,0 +1,370 @@ +/* + * Definitions and wrapper functions for kernel decompressor + * + * (C) 2017 Helge Deller + */ + +#include +#include +#include +#include +#include "sizes.h" + +/* + * gzip declarations + */ +#define STATIC static + +#undef memmove +#define memmove memmove +#define memzero(s, n) memset((s), 0, (n)) + +#define malloc malloc_gzip +#define free free_gzip + +/* Symbols defined by linker scripts */ +extern char input_data[]; +extern int input_len; +/* output_len is inserted by the linker possibly at an unaligned address */ +extern char output_len; +extern char _text, _end; +extern char _bss, _ebss; +extern char _startcode_end; +extern void startup_continue(void *entry, unsigned long cmdline, + unsigned long rd_start, unsigned long rd_end) __noreturn; + +void error(char *m) __noreturn; + +static unsigned long free_mem_ptr; +static unsigned long free_mem_end_ptr; + +#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 + +void *memmove(void *dest, const void *src, size_t n) +{ + const char *s = src; + char *d = dest; + + if (d <= s) { + while (n--) + *d++ = *s++; + } else { + d += n; + s += n; + while (n--) + *--d = *--s; + } + return dest; +} + +void *memset(void *s, int c, size_t count) +{ + char *xs = (char *)s; + + while (count--) + *xs++ = c; + return s; +} + +void *memcpy(void *d, const void *s, size_t len) +{ + char *dest = (char *)d; + const char *source = (const char *)s; + + while (len--) + *dest++ = *source++; + return d; +} + +size_t strlen(const char *s) +{ + const char *sc; + + for (sc = s; *sc != '\0'; ++sc) + ; + return sc - s; +} + +char *strchr(const char *s, int c) +{ + while (*s) { + if (*s == (char)c) + return (char *)s; + ++s; + } + return NULL; +} + +static int puts(const char *s) +{ + const char *nuline = s; + + while ((nuline = strchr(s, '\n')) != NULL) { + if (nuline != s) + pdc_iodc_print(s, nuline - s); + pdc_iodc_print("\r\n", 2); + s = nuline + 1; + } + if (*s != '\0') + pdc_iodc_print(s, strlen(s)); + + return 0; +} + +static int putchar(int c) +{ + char buf[2]; + + buf[0] = c; + buf[1] = '\0'; + puts(buf); + return c; +} + +void __noreturn error(char *x) +{ + if (x) puts(x); + puts("\n -- System halted\n"); + while (1) /* wait forever */ + ; +} + +static int print_num(unsigned long num, int base) +{ + const char hex[] = "0123456789abcdef"; + char str[40]; + int i = sizeof(str)-1; + + str[i--] = '\0'; + do { + str[i--] = hex[num % base]; + num = num / base; + } while (num); + + if (base == 16) { + str[i--] = 'x'; + str[i] = '0'; + } else i++; + puts(&str[i]); + + return 0; +} + +static int printf(const char *fmt, ...) +{ + va_list args; + int i = 0; + + va_start(args, fmt); + + while (fmt[i]) { + if (fmt[i] != '%') { +put: + putchar(fmt[i++]); + continue; + } + + if (fmt[++i] == '%') + goto put; + print_num(va_arg(args, unsigned long), + fmt[i] == 'x' ? 16:10); + ++i; + } + + va_end(args); + return 0; +} + +/* helper functions for libgcc */ +void abort(void) +{ + error("aborted."); +} + +#undef malloc +static void *malloc(size_t size) +{ + return malloc_gzip(size); +} + +#undef free +static void free(void *ptr) +{ + return free_gzip(ptr); +} + + +static void flush_data_cache(char *start, unsigned long length) +{ + char *end = start + length; + + do { + asm volatile("fdc 0(%0)" : : "r" (start)); + asm volatile("fic 0(%%sr0,%0)" : : "r" (start)); + start += 16; + } while (start < end); + asm volatile("fdc 0(%0)" : : "r" (end)); + + asm ("sync"); +} + +static void parse_elf(void *output) +{ +#ifdef CONFIG_64BIT + Elf64_Ehdr ehdr; + Elf64_Phdr *phdrs, *phdr; +#else + Elf32_Ehdr ehdr; + Elf32_Phdr *phdrs, *phdr; +#endif + void *dest; + int i; + + memcpy(&ehdr, output, sizeof(ehdr)); + if (ehdr.e_ident[EI_MAG0] != ELFMAG0 || + ehdr.e_ident[EI_MAG1] != ELFMAG1 || + ehdr.e_ident[EI_MAG2] != ELFMAG2 || + ehdr.e_ident[EI_MAG3] != ELFMAG3) { + error("Kernel is not a valid ELF file"); + return; + } + +#ifdef DEBUG + printf("Parsing ELF... "); +#endif + + phdrs = malloc(sizeof(*phdrs) * ehdr.e_phnum); + if (!phdrs) + error("Failed to allocate space for phdrs"); + + memcpy(phdrs, output + ehdr.e_phoff, sizeof(*phdrs) * ehdr.e_phnum); + + for (i = 0; i < ehdr.e_phnum; i++) { + phdr = &phdrs[i]; + + switch (phdr->p_type) { + case PT_LOAD: + dest = (void *)((unsigned long) phdr->p_paddr & + (__PAGE_OFFSET_DEFAULT-1)); + memmove(dest, output + phdr->p_offset, phdr->p_filesz); + break; + default: + break; + } + } + + free(phdrs); +} + +asmlinkage unsigned long __visible decompress_kernel(unsigned int started_wide, + unsigned int command_line, + const unsigned int rd_start, + const unsigned int rd_end) +{ + char *output; + unsigned long vmlinux_addr, vmlinux_len; + unsigned long kernel_addr, kernel_len; + +#ifdef CONFIG_64BIT + parisc_narrow_firmware = 0; +#endif + + set_firmware_width_unlocked(); + + putchar('D'); /* if you get this D and no more, string storage */ + /* in $GLOBAL$ is wrong or %dp is wrong */ + puts("ecompressing Linux... "); + + /* where the final bits are stored */ + kernel_addr = KERNEL_BINARY_TEXT_START; + kernel_len = __pa(SZ_end) - __pa(SZparisc_kernel_start); + if ((unsigned long) &_startcode_end > kernel_addr) + error("Bootcode overlaps kernel code"); + + /* + * Calculate addr to where the vmlinux ELF file shall be decompressed. + * Assembly code in head.S positioned the stack directly behind bss, so + * leave 2 MB for the stack. + */ + vmlinux_addr = (unsigned long) &_ebss + 2*1024*1024; + vmlinux_len = get_unaligned_le32(&output_len); + output = (char *) vmlinux_addr; + + /* + * Initialize free_mem_ptr and free_mem_end_ptr. + */ + free_mem_ptr = vmlinux_addr + vmlinux_len; + + /* Limit memory for bootoader to 1GB */ + #define ARTIFICIAL_LIMIT (1*1024*1024*1024) + free_mem_end_ptr = PAGE0->imm_max_mem; + if (free_mem_end_ptr > ARTIFICIAL_LIMIT) + free_mem_end_ptr = ARTIFICIAL_LIMIT; + +#ifdef CONFIG_BLK_DEV_INITRD + /* if we have ramdisk this is at end of memory */ + if (rd_start && rd_start < free_mem_end_ptr) + free_mem_end_ptr = rd_start; +#endif + + if (free_mem_ptr >= free_mem_end_ptr) { + int free_ram; + free_ram = (free_mem_ptr >> 20) + 1; + if (free_ram < 32) + free_ram = 32; + printf("\nKernel requires at least %d MB RAM.\n", + free_ram); + error(NULL); + } + +#ifdef DEBUG + printf("\n"); + printf("startcode_end = %x\n", &_startcode_end); + printf("commandline = %x\n", command_line); + printf("rd_start = %x\n", rd_start); + printf("rd_end = %x\n", rd_end); + + printf("free_ptr = %x\n", free_mem_ptr); + printf("free_ptr_end = %x\n", free_mem_end_ptr); + + printf("input_data = %x\n", input_data); + printf("input_len = %x\n", input_len); + printf("output = %x\n", output); + printf("output_len = %x\n", vmlinux_len); + printf("kernel_addr = %x\n", kernel_addr); + printf("kernel_len = %x\n", kernel_len); +#endif + + __decompress(input_data, input_len, NULL, NULL, + output, 0, NULL, error); + parse_elf(output); + + output = (char *) kernel_addr; + flush_data_cache(output, kernel_len); + + printf("done.\nBooting the kernel.\n"); + + return (unsigned long) output; +} diff --git a/arch/parisc/boot/compressed/real2.S b/arch/parisc/boot/compressed/real2.S new file mode 100644 index 0000000000..cdc6a4da32 --- /dev/null +++ b/arch/parisc/boot/compressed/real2.S @@ -0,0 +1,2 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#include "../../kernel/real2.S" diff --git a/arch/parisc/boot/compressed/vmlinux.lds.S b/arch/parisc/boot/compressed/vmlinux.lds.S new file mode 100644 index 0000000000..ab7b439908 --- /dev/null +++ b/arch/parisc/boot/compressed/vmlinux.lds.S @@ -0,0 +1,106 @@ +#include +#include +#include "sizes.h" + +#ifndef CONFIG_64BIT +OUTPUT_FORMAT("elf32-hppa-linux") +OUTPUT_ARCH(hppa) +#else +OUTPUT_FORMAT("elf64-hppa-linux") +OUTPUT_ARCH(hppa:hppa2.0w) +#endif + +ENTRY(startup) + +SECTIONS +{ + /* palo loads at 0x60000 */ + /* loaded kernel will move to 0x10000 */ + . = 0xe0000; /* should not overwrite palo code */ + + .head.text : { + _head = . ; + HEAD_TEXT + _ehead = . ; + } + + /* keep __gp below 0x1000000 */ +#ifdef CONFIG_64BIT + . = ALIGN(16); + /* Linkage tables */ + .opd : { + __start_opd = .; + *(.opd) + __end_opd = .; + } PROVIDE (__gp = .); + .plt : { + *(.plt) + } + .dlt : { + *(.dlt) + } +#endif + _startcode_end = .; + + /* vmlinux.bin.gz is here */ + . = ALIGN(8); + .rodata.compressed : { + *(.rodata.compressed) + } + + /* bootloader code and data starts at least behind area of extracted kernel */ + . = MAX(ABSOLUTE(.), (SZ_end - SZparisc_kernel_start + KERNEL_BINARY_TEXT_START)); + + /* align on next page boundary */ + . = ALIGN(4096); + .text : { + _text = .; /* Text */ + *(.text) + *(.text.*) + _etext = . ; + } + . = ALIGN(8); + .data : { + _data = . ; + *(.data) + *(.data.*) + _edata = . ; + } + . = ALIGN(8); + .rodata : { + _rodata = . ; + *(.rodata) /* read-only data */ + *(.rodata.*) + _erodata = . ; + } + . = ALIGN(8); + .bss : { + _bss = . ; + *(.bss) + *(.bss.*) + *(COMMON) + . = ALIGN(4096); + _ebss = .; + } + + STABS_DEBUG + ELF_DETAILS + .note 0 : { *(.note) } + + /* Sections to be discarded */ + DISCARDS + /DISCARD/ : { +#ifdef CONFIG_64BIT + /* temporary hack until binutils is fixed to not emit these + * for static binaries + */ + *(.PARISC.unwind) /* no unwind data */ + *(.interp) + *(.dynsym) + *(.dynstr) + *(.dynamic) + *(.hash) + *(.gnu.hash) +#endif + } +} diff --git a/arch/parisc/boot/compressed/vmlinux.scr b/arch/parisc/boot/compressed/vmlinux.scr new file mode 100644 index 0000000000..dac2d142bc --- /dev/null +++ b/arch/parisc/boot/compressed/vmlinux.scr @@ -0,0 +1,10 @@ +SECTIONS +{ + .rodata.compressed : { + input_len = .; + LONG(input_data_end - input_data) input_data = .; + *(.data) + output_len = . - 4; /* can be at unaligned address */ + input_data_end = .; + } +} -- cgit v1.2.3