This patch adds support for the parisc Architecture. kexec support
for parisc is included with linux-5.4.
Signed-off-by: Sven Schnelle <svens@xxxxxxxxxxxxxx>
---
configure.ac | 3 +
kexec/Makefile | 1 +
kexec/arch/hppa/Makefile | 13 ++
kexec/arch/hppa/include/arch/options.h | 32 +++++
kexec/arch/hppa/kexec-elf-hppa.c | 159 +++++++++++++++++++++++++
kexec/arch/hppa/kexec-elf-rel-hppa.c | 37 ++++++
kexec/arch/hppa/kexec-hppa.c | 148 +++++++++++++++++++++++
kexec/arch/hppa/kexec-hppa.h | 9 ++
kexec/kexec-syscall.h | 4 +
9 files changed, 406 insertions(+)
create mode 100644 kexec/arch/hppa/Makefile
create mode 100644 kexec/arch/hppa/include/arch/options.h
create mode 100644 kexec/arch/hppa/kexec-elf-hppa.c
create mode 100644 kexec/arch/hppa/kexec-elf-rel-hppa.c
create mode 100644 kexec/arch/hppa/kexec-hppa.c
create mode 100644 kexec/arch/hppa/kexec-hppa.h
diff --git a/configure.ac b/configure.ac
index 8474f7d..f025823 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,6 +55,9 @@ case $target_cpu in
ia64|x86_64|alpha|m68k )
ARCH="$target_cpu"
;;
+ hppa*)
+ ARCH="hppa"
+ ;;
* )
AC_MSG_ERROR([unsupported architecture $target_cpu])
;;
diff --git a/kexec/Makefile b/kexec/Makefile
index 4db84d8..8e3e9ea 100644
--- a/kexec/Makefile
+++ b/kexec/Makefile
@@ -92,6 +92,7 @@ include $(srcdir)/kexec/arch/ppc64/Makefile
include $(srcdir)/kexec/arch/s390/Makefile
include $(srcdir)/kexec/arch/sh/Makefile
include $(srcdir)/kexec/arch/x86_64/Makefile
+include $(srcdir)/kexec/arch/hppa/Makefile
KEXEC_SRCS += $($(ARCH)_KEXEC_SRCS)
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..a936140
--- /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 "a:r:s:"
+
+/* 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..d3ef0e9
--- /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@xxxxxxxxxxxxxx>
+ *
+ * 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 "d";
+
+ 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@xxxxxxxxxxxxxx>
+ *
+ * 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@xxxxxxxxxxxxxx>
+ *
+ * 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 */
diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
index 92d51d3..bea29d4 100644
--- a/kexec/kexec-syscall.h
+++ b/kexec/kexec-syscall.h
@@ -74,6 +74,9 @@
#ifdef __aarch64__
#define __NR_kexec_file_load 294
#endif
+#ifdef __hppa__
+#define __NR_kexec_file_load 355
+#endif
#ifndef __NR_kexec_file_load
/* system call not available for the arch */
@@ -119,6 +122,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
#define KEXEC_ARCH_DEFAULT ( 0 << 16)
#define KEXEC_ARCH_386 ( 3 << 16)
#define KEXEC_ARCH_68K ( 4 << 16)
+#define KEXEC_ARCH_HPPA (15 << 16)
#define KEXEC_ARCH_X86_64 (62 << 16)
#define KEXEC_ARCH_PPC (20 << 16)
#define KEXEC_ARCH_PPC64 (21 << 16)
--
2.23.0.rc1
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