diff options
Diffstat (limited to '')
| -rw-r--r-- | kexec/arch/hppa/Makefile | 13 | ||||
| -rw-r--r-- | kexec/arch/hppa/include/arch/options.h | 32 | ||||
| -rw-r--r-- | kexec/arch/hppa/kexec-elf-hppa.c | 159 | ||||
| -rw-r--r-- | kexec/arch/hppa/kexec-elf-rel-hppa.c | 37 | ||||
| -rw-r--r-- | kexec/arch/hppa/kexec-hppa.c | 148 | ||||
| -rw-r--r-- | kexec/arch/hppa/kexec-hppa.h | 9 |
6 files changed, 398 insertions, 0 deletions
diff --git a/kexec/arch/hppa/Makefile b/kexec/arch/hppa/Makefile new file mode 100644 index 0000000..e98f6da --- /dev/null +++ b/kexec/arch/hppa/Makefile @@ -0,0 +1,13 @@ +# +# kexec hppa (linux booting linux) +# +hppa_KEXEC_SRCS = kexec/arch/hppa/kexec-hppa.c +hppa_KEXEC_SRCS += kexec/arch/hppa/kexec-elf-hppa.c +hppa_KEXEC_SRCS += kexec/arch/hppa/kexec-elf-rel-hppa.c + +hppa_ADD_SEGMENT = +hppa_VIRT_TO_PHYS = + +dist += kexec/arch/hppa/Makefile $(hppa_KEXEC_SRCS) \ + kexec/arch/hppa/kexec-hppa.h \ + kexec/arch/hppa/include/arch/options.h diff --git a/kexec/arch/hppa/include/arch/options.h b/kexec/arch/hppa/include/arch/options.h new file mode 100644 index 0000000..e9deb51 --- /dev/null +++ b/kexec/arch/hppa/include/arch/options.h @@ -0,0 +1,32 @@ +#ifndef KEXEC_ARCH_HPPA_OPTIONS_H +#define KEXEC_ARCH_HPPA_OPTIONS_H + +#define OPT_ARCH_MAX (OPT_MAX+0) + +#define KEXEC_ARCH_OPTIONS \ + KEXEC_OPTIONS + +#define KEXEC_ARCH_OPT_STR KEXEC_OPT_STR "" + +#define KEXEC_ALL_OPTIONS \ + KEXEC_ARCH_OPTIONS \ + { "command-line", 1, 0, OPT_APPEND }, \ + { "reuse-cmdline", 0, 0, OPT_REUSE_CMDLINE }, \ + { "append", 1, 0, OPT_APPEND }, \ + { "initrd", 1, 0, OPT_RAMDISK }, \ + { "ramdisk", 1, 0, OPT_RAMDISK }, + + +#define KEXEC_ALL_OPT_STR KEXEC_ARCH_OPT_STR "" + +/* See the other architectures for details of these; HPPA has no + * loader-specific options yet. + */ +#define OPT_ARCH_MAX (OPT_MAX+0) + +#define OPT_APPEND (OPT_ARCH_MAX+0) +#define OPT_REUSE_CMDLINE (OPT_ARCH_MAX+1) +#define OPT_RAMDISK (OPT_ARCH_MAX+2) + +#define MAX_MEMORY_RANGES 16 +#endif /* KEXEC_ARCH_HPPA_OPTIONS_H */ diff --git a/kexec/arch/hppa/kexec-elf-hppa.c b/kexec/arch/hppa/kexec-elf-hppa.c new file mode 100644 index 0000000..474a919 --- /dev/null +++ b/kexec/arch/hppa/kexec-elf-hppa.c @@ -0,0 +1,159 @@ +/* + * kexec-elf-hppa.c - kexec Elf loader for hppa + * + * Copyright (c) 2019 Sven Schnelle <svens@stackframe.org> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. +*/ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <getopt.h> +#include <elf.h> +#include <boot/elf_boot.h> +#include <ip_checksum.h> +#include "../../kexec.h" +#include "../../kexec-elf.h" +#include "../../kexec-syscall.h" +#include "kexec-hppa.h" +#include <arch/options.h> + +#define PAGE_SIZE 4096 + +extern unsigned long phys_offset; + +int elf_hppa_probe(const char *buf, off_t len) +{ + struct mem_ehdr ehdr; + int result; + result = build_elf_exec_info(buf, len, &ehdr, 0); + if (result < 0) + goto out; + + phys_offset = ehdr.e_entry & 0xf0000000; + /* Verify the architecuture specific bits */ + if (ehdr.e_machine != EM_PARISC) { + /* for a different architecture */ + fprintf(stderr, "Not for this architecture.\n"); + result = -1; + goto out; + } + result = 0; + out: + free_elf_info(&ehdr); + return result; +} + +void elf_hppa_usage(void) +{ + printf(" --command-line=STRING Set the kernel command line to STRING\n" + " --append=STRING Set the kernel command line to STRING\n" + " --reuse-cmdline Use kernel command line from running system.\n" + " --ramdisk=FILE Use FILE as the kernel's initial ramdisk.\n" + " --initrd=FILE Use FILE as the kernel's initial ramdisk.\n" + ); +} + +int elf_hppa_load(int argc, char **argv, const char *buf, off_t len, + struct kexec_info *info) +{ + struct mem_ehdr ehdr; + char *cmdline = NULL, *ramdisk = NULL; + int opt, result, i; + unsigned long ramdisk_addr = 0; + off_t ramdisk_size = 0; + + static const struct option options[] = { + KEXEC_ALL_OPTIONS + { 0, 0, NULL, 0 }, + }; + + static const char short_options[] = KEXEC_ALL_OPT_STR; + + while ((opt = getopt_long(argc, argv, short_options, options, 0)) != + -1) { + switch (opt) { + default: + /* Ignore core options */ + if (opt < OPT_ARCH_MAX) + break; + case OPT_APPEND: + cmdline = strdup(optarg); + break; + case OPT_REUSE_CMDLINE: + cmdline = get_command_line(); + break; + case OPT_RAMDISK: + ramdisk = optarg; + break; + } + } + + if (info->file_mode) { + if (cmdline) { + info->command_line = cmdline; + info->command_line_len = strlen(cmdline) + 1; + } + + if (ramdisk) { + info->initrd_fd = open(ramdisk, O_RDONLY); + if (info->initrd_fd == -1) { + fprintf(stderr, "Could not open initrd file " + "%s:%s\n", ramdisk, strerror(errno)); + return -1; + } + } + return 0; + } + + result = build_elf_exec_info(buf, len, &ehdr, 0); + if (result < 0) + die("ELF exec parse failed\n"); + + /* Fixup PT_LOAD segments that include the ELF header (offset zero) */ + for (i = 0; i < ehdr.e_phnum; i++) { + struct mem_phdr *phdr; + phdr = &ehdr.e_phdr[i]; + if (phdr->p_type != PT_LOAD || phdr->p_offset) + continue; + + dbgprintf("Removing ELF header from segment %d\n", i); + phdr->p_paddr += PAGE_SIZE; + phdr->p_vaddr += PAGE_SIZE; + phdr->p_filesz -= PAGE_SIZE; + phdr->p_memsz -= PAGE_SIZE; + phdr->p_offset += PAGE_SIZE; + phdr->p_data += PAGE_SIZE; + } + + /* Load the ELF data */ + result = elf_exec_load(&ehdr, info); + if (result < 0) + die("ELF exec load failed\n"); + + info->entry = (void *)virt_to_phys(ehdr.e_entry); + + + /* Load ramdisk */ + if (ramdisk) { + void *initrd = slurp_decompress_file(ramdisk, &ramdisk_size); + /* Store ramdisk at top of first memory chunk */ + ramdisk_addr = _ALIGN_DOWN(info->memory_range[0].end - + ramdisk_size + 1, PAGE_SIZE); + if (!buf) + die("Ramdisk load failed\n"); + add_buffer(info, initrd, ramdisk_size, ramdisk_size, + PAGE_SIZE, ramdisk_addr, info->memory_range[0].end, + 1); + } + + return 0; +} diff --git a/kexec/arch/hppa/kexec-elf-rel-hppa.c b/kexec/arch/hppa/kexec-elf-rel-hppa.c new file mode 100644 index 0000000..661b67b --- /dev/null +++ b/kexec/arch/hppa/kexec-elf-rel-hppa.c @@ -0,0 +1,37 @@ +/* + * kexec-elf-rel-hppa.c - kexec Elf relocation routines + * + * Copyright (C) 2019 Sven Schnelle <svens@stackframe.org> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. +*/ + +#include <stdio.h> +#include <elf.h> +#include "../../kexec.h" +#include "../../kexec-elf.h" + +int machine_verify_elf_rel(struct mem_ehdr *ehdr) +{ + if (ehdr->ei_data != ELFDATA2MSB) + return 0; + if (ehdr->e_machine != EM_PARISC) + return 0; + return 1; +} + +void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr), + struct mem_sym *UNUSED(sym), + unsigned long r_type, + void *UNUSED(location), + unsigned long UNUSED(address), + unsigned long UNUSED(value)) +{ + switch (r_type) { + default: + die("Unknown rela relocation: %lu\n", r_type); + break; + } + return; +} diff --git a/kexec/arch/hppa/kexec-hppa.c b/kexec/arch/hppa/kexec-hppa.c new file mode 100644 index 0000000..77c9739 --- /dev/null +++ b/kexec/arch/hppa/kexec-hppa.c @@ -0,0 +1,148 @@ +/* + * kexec-hppa.c - kexec for hppa + * + * Copyright (C) 2019 Sven Schnelle <svens@stackframe.org> + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <stddef.h> +#include <stdio.h> +#include <errno.h> +#include <stdint.h> +#include <string.h> +#include <getopt.h> +#include "../../kexec.h" +#include "../../kexec-syscall.h" +#include "kexec-hppa.h" +#include <arch/options.h> + +#define SYSTEM_RAM "System RAM\n" +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +static struct memory_range memory_range[MAX_MEMORY_RANGES]; +unsigned long phys_offset; + +/* Return a sorted list of available memory ranges. */ +int get_memory_ranges(struct memory_range **range, int *ranges, + unsigned long UNUSED(kexec_flags)) +{ + const char *iomem = proc_iomem(); + int memory_ranges = 0; + char line[512]; + FILE *fp; + + fp = fopen(iomem, "r"); + + if (!fp) { + fprintf(stderr, "Cannot open %s: %s\n", + iomem, strerror(errno)); + return -1; + } + + while(fgets(line, sizeof(line), fp) != 0) { + unsigned long long start, end; + char *str; + int type; + int consumed; + int count; + + + count = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed); + + if (count != 2) + continue; + + str = line + consumed; + + if (memcmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0) { + type = RANGE_RAM; + } else if (memcmp(str, "reserved\n", 9) == 0) { + type = RANGE_RESERVED; + } else { + continue; + } + + memory_range[memory_ranges].start = start; + memory_range[memory_ranges].end = end; + memory_range[memory_ranges].type = type; + if (++memory_ranges >= MAX_MEMORY_RANGES) + break; + } + fclose(fp); + *range = memory_range; + *ranges = memory_ranges; + + dbgprint_mem_range("MEMORY RANGES", *range, *ranges); + return 0; +} + +struct file_type file_type[] = { + {"elf-hppa", elf_hppa_probe, elf_hppa_load, elf_hppa_usage}, +}; +int file_types = ARRAY_SIZE(file_type); + +void arch_usage(void) +{ +} + +int arch_process_options(int argc, char **argv) +{ + static const struct option options[] = { + KEXEC_ALL_OPTIONS + { 0, 0, NULL, 0 }, + }; + static const char short_options[] = KEXEC_ALL_OPT_STR; + int opt; + + opterr = 0; /* Don't complain about unrecognized options here */ + while ((opt = getopt_long(argc, argv, short_options, options, 0)) != + -1) { + switch (opt) { + default: + break; + } + } + /* Reset getopt for the next pass; called in other source modules */ + opterr = 1; + optind = 1; + return 0; +} + +const struct arch_map_entry arches[] = { + { "parisc64", KEXEC_ARCH_HPPA }, + { "parisc", KEXEC_ARCH_HPPA }, + { NULL, 0 }, +}; + +int arch_compat_trampoline(struct kexec_info *UNUSED(info)) +{ + return 0; +} + +void arch_update_purgatory(struct kexec_info *UNUSED(info)) +{ +} + +int is_crashkernel_mem_reserved(void) +{ + return 0; +} + +int get_crash_kernel_load_range(uint64_t *start, uint64_t *end) +{ + /* Crash kernel region size is not exposed by the system */ + return -1; +} + +void add_segment(struct kexec_info *info, const void *buf, size_t bufsz, + unsigned long base, size_t memsz) +{ + add_segment_phys_virt(info, buf, bufsz, base, memsz, 1); +} + +unsigned long virt_to_phys(unsigned long addr) +{ + return addr - phys_offset; +} diff --git a/kexec/arch/hppa/kexec-hppa.h b/kexec/arch/hppa/kexec-hppa.h new file mode 100644 index 0000000..485e5b6 --- /dev/null +++ b/kexec/arch/hppa/kexec-hppa.h @@ -0,0 +1,9 @@ +#ifndef KEXEC_HPPA_H +#define KEXEC_HPPA_H + +int elf_hppa_probe(const char *buf, off_t len); +int elf_hppa_load(int argc, char **argv, const char *buf, off_t len, + struct kexec_info *info); +void elf_hppa_usage(void); + +#endif /* KEXEC_HPPA_H */ |