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kexec-tools/makedumpfile-1.7.4-sw64.patch
Gu Zitao 41adb0fe8b kdump: add sw64 support 
Signed-off-by: Gu Zitao <guzitao@wxiat.com>
2025-04-01 10:34:49 +08:00

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diff -Naru ./makedumpfile-1.7.4/arch/sw_64.c ./makedumpfile-1.7.4-sw64/arch/sw_64.c
--- ./makedumpfile-1.7.4/arch/sw_64.c 1970-01-01 08:00:00.000000000 +0800
+++ ./makedumpfile-1.7.4-sw64/arch/sw_64.c 2025-04-01 08:37:38.886978748 +0800
@@ -0,0 +1,328 @@
+/*
+ * arch/sw_64.c
+ *
+ * Copyright (C) 2021 Uniontech, Bai xin <baixin@uniontech.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifdef __sw_64__
+
+#include "../elf_info.h"
+#include "../makedumpfile.h"
+#include "../print_info.h"
+
+typedef struct {
+ unsigned long pgd;
+} pgd_t;
+
+typedef struct {
+ pgd_t pgd;
+} pud_t;
+
+typedef struct {
+ pud_t pud;
+} pmd_t;
+
+typedef struct {
+ unsigned long pte;
+} pte_t;
+
+#define __pte(x) ((pte_t) { (x) } )
+#define __pmd(x) ((pmd_t) { (x) } )
+#define __pud(x) ((pud_t) { (x) } )
+#define __pgd(x) ((pgd_t) { (x) } )
+
+static int pgtable_level = 4;
+static int va_bits = 53;
+
+#define pgd_val(x) ((x).pgd)
+#define pud_val(x) (pgd_val((x).pgd))
+#define pmd_val(x) (pud_val((x).pud))
+#define pte_val(x) ((x).pte)
+
+/* See 'include/uapi/linux/const.h' for definitions below */
+#define __AC(X,Y) (X##Y)
+#define _AC(X,Y) __AC(X,Y)
+#define _AT(T,X) ((T)(X))
+
+/* See 'include/asm/pgtable-types.h' for definitions below */
+typedef unsigned long pteval_t;
+typedef unsigned long pmdval_t;
+typedef unsigned long pudval_t;
+typedef unsigned long pgdval_t;
+
+#define PAGE_SHIFT 13
+
+/* See 'arch/sw_64/include/asm/pgtable-hwdef.h' for definitions below */
+
+#define SW_64_HW_PGTABLE_LEVEL_SHIFT(n) ((PAGE_SHIFT - 3) * (4 - (n)) + 3)
+
+#define PTRS_PER_PTE (1 << (PAGE_SHIFT - 3))
+
+/*
+ * PMD_SHIFT determines the size a level 2 page table entry can map.
+ */
+#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3))
+#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
+#define PMD_MASK (~(PMD_SIZE-1))
+#define PTRS_PER_PMD PTRS_PER_PTE
+
+/*
+ * PUD_SHIFT determines the size a level 1 page table entry can map.
+ */
+#define PUD_SHIFT (PAGE_SHIFT + 2 * (PAGE_SHIFT - 3))
+#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
+#define PUD_MASK (~(PUD_SIZE-1))
+#define PTRS_PER_PUD PTRS_PER_PTE
+
+/*
+ * PGDIR_SHIFT determines the size a top-level page table entry can map
+ * (depending on the configuration, this level can be 0, 1 or 2).
+ */
+#define PGDIR_SHIFT (PAGE_SHIFT + 3* (PAGE_SHIFT - 3))
+#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
+#define PGDIR_MASK (~(PGDIR_SIZE-1))
+#define PTRS_PER_PGD (1UL << (PAGE_SHIFT - 3))
+
+#define pgd_index(vaddr) (((vaddr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
+#define pgd_offset(pgd, vaddr) ((pgd_t *)(pgd) + pgd_index(vaddr))
+
+#define __SW_PAGE_OFFSET 0xfff0000000000000
+#define __START_KERNEL_map __SW_PAGE_OFFSET
+#define __SW_MAX_PHYSMEM_BITS 48
+#define __SW_SECTION_SIZE_BITS 28
+
+static unsigned long long
+__pa(unsigned long x)
+{
+ unsigned long y = x;
+
+ if (y >= __START_KERNEL_map) {
+ y -= __START_KERNEL_map;
+ } else {
+ y -= __SW_PAGE_OFFSET;
+ }
+ return y;
+}
+
+#define _PFN_BITS 40
+#define _PTE_FLAGS_BITS (64 - _PFN_BITS)
+#define _PFN_MASK 0x7FFFFFFFF000000UL
+#define PAGE_OFFSET 0xfff0000000000000
+static inline unsigned long pgd_page_vaddr(pgd_t pgd)
+{
+ return ((pgd_val(pgd) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+#define PTRS_PER_PAGE (1UL << (PAGE_SHIFT - 3))
+static inline unsigned long _pud_offset(unsigned long vaddr)
+{
+ return (vaddr >> PUD_SHIFT) & (PTRS_PER_PAGE - 1);
+}
+static inline pud_t *pud_offset(pgd_t *pgda, pgd_t *pgdv, unsigned long vaddr)
+{
+ pud_t *ret = (pud_t *) pgd_page_vaddr(*pgdv)
+ + _pud_offset(vaddr);
+ return ret;
+}
+
+static inline unsigned long pud_page_vaddr(pud_t pud)
+{
+ return ((pud_val(pud) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+static inline unsigned long _pmd_offset(unsigned long vaddr)
+{
+ return ((vaddr >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
+}
+static inline pmd_t *pmd_offset(pud_t *puda, pud_t *pudv, unsigned long vaddr)
+{
+ pmd_t *ret = (pmd_t *) pud_page_vaddr(*pudv)
+ + _pmd_offset(vaddr);
+ return ret;
+}
+
+static inline unsigned long
+pmd_page_vaddr(pmd_t pmd)
+{
+ return ((pmd_val(pmd) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT));
+}
+static inline unsigned long _pte_offset(unsigned long address)
+{
+ return ((address >> PAGE_SHIFT) & (PTRS_PER_PAGE - 1));
+}
+static inline pte_t *pte_offset(pmd_t *dir, unsigned long address)
+{
+ pte_t *ret = (pte_t *) pmd_page_vaddr(*dir)
+ + _pte_offset(address);
+ return ret;
+}
+
+#define _PAGE_VALID 0x0001
+static inline int pte_present(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_VALID;
+}
+
+ulong
+get_stext_symbol(void)
+{
+ int found;
+ FILE *fp;
+ char buf[BUFSIZE];
+ char *kallsyms[MAXARGS];
+ ulong kallsym;
+
+ if (!file_exists("/proc/kallsyms")) {
+ ERRMSG("(%s) does not exist, will not be able to read symbols. %s\n",
+ "/proc/kallsyms", strerror(errno));
+ return FALSE;
+ }
+
+ if ((fp = fopen("/proc/kallsyms", "r")) == NULL) {
+ ERRMSG("Cannot open (%s) to read symbols. %s\n",
+ "/proc/kallsyms", strerror(errno));
+ return FALSE;
+ }
+
+ found = FALSE;
+ kallsym = 0;
+
+ while (!found && fgets(buf, BUFSIZE, fp) &&
+ (parse_line(buf, kallsyms) == 3)) {
+ if (hexadecimal(kallsyms[0], 0) &&
+ STREQ(kallsyms[2], "_stext")) {
+ kallsym = htol(kallsyms[0], 0);
+ found = TRUE;
+ break;
+ }
+ }
+ fclose(fp);
+
+ return(found ? kallsym : FALSE);
+}
+
+int
+get_machdep_info_sw_64(void)
+{
+ info->section_size_bits = __SW_SECTION_SIZE_BITS;
+ info->max_physmem_bits = __SW_MAX_PHYSMEM_BITS;
+ return TRUE;
+}
+
+unsigned long long
+kvtop_xen_sw_64(unsigned long kvaddr)
+{
+ return ERROR;
+}
+
+int
+get_xen_basic_info_sw_64(void)
+{
+ return ERROR;
+}
+
+int
+get_xen_info_sw_64(void)
+{
+ return ERROR;
+}
+
+/*
+ * vaddr_to_paddr_sw_64() - translate arbitrary virtual address to physical
+ * @vaddr: virtual address to translate
+ *
+ * Function translates @vaddr into physical address using page tables. This
+ * address can be any virtual address. Returns physical address of the
+ * corresponding virtual address or %NOT_PADDR when there is no translation.
+ */
+unsigned long long
+vaddr_to_paddr_sw_64(unsigned long vaddr)
+{
+ unsigned long long paddr = NOT_PADDR;
+ unsigned long long swapper_phys;
+ pgd_t *pgda, pgdv;
+ pud_t *puda, pudv;
+ pmd_t *pmda, pmdv;
+ pte_t *ptea, ptev;
+
+ if (vaddr > 0xffffffff80000000){
+ paddr = vaddr - 0xffffffff80000000;
+ DEBUG_MSG("direct map:%-16lx ----> %-16lx\n", vaddr, paddr);
+ return paddr;
+ }
+
+ if (vaddr > 0xfff0000000000000 && vaddr < 0xfff0ffffffffffff){
+ paddr = vaddr - 0xfff0000000000000;
+ DEBUG_MSG("direct map:%-16lx ----> %-16lx\n", vaddr, paddr);
+ return paddr;
+ }
+
+ if (SYMBOL(swapper_pg_dir) == NOT_FOUND_SYMBOL) {
+ ERRMSG("Can't get the symbol of swapper_pg_dir.\n");
+ return NOT_PADDR;
+ }
+
+ swapper_phys = __pa(SYMBOL(swapper_pg_dir));
+ DEBUG_MSG("start look table vaddr:%-16lx\n", vaddr);
+ DEBUG_MSG("swapper_pg_dir:%-16lx\n", SYMBOL(swapper_pg_dir));
+
+ pgda = pgd_offset(swapper_phys, vaddr);
+ DEBUG_MSG("pgd:%-16lx offset:%-16lx pgda:%-16lx", swapper_phys, pgd_index(vaddr) * sizeof(pgd_t), pgda);
+ if (!readmem(PADDR, (unsigned long long)pgda, &pgdv, sizeof(pgdv))) {
+ ERRMSG("Can't read pgd\n");
+ return NOT_PADDR;
+ }
+ DEBUG_MSG(" pgdv:%-16lx\n", pgdv);
+
+ puda = pud_offset(pgda, &pgdv, vaddr);
+ DEBUG_MSG("pud:%-16lx offset:%-16lx puda:%-16lx", pgd_page_vaddr(pgdv), _pud_offset(vaddr) * sizeof(pud_t), puda);
+ if (!readmem(PADDR, (unsigned long long)puda, &pudv, sizeof(pudv))) {
+ ERRMSG("Can't read pud\n");
+ return NOT_PADDR;
+ }
+ DEBUG_MSG(" pudv:%-16lx\n", pudv);
+
+ if (!pud_val(pudv)) {
+ DEBUG_MSG("addr = %#lx, pgd = %#lx, pud = %#lx\n",
+ vaddr, pgd_val(pgdv), pud_val(pudv));
+ return 0;
+ }
+
+ pmda = pmd_offset(puda, &pudv, vaddr);
+ DEBUG_MSG("pmd:%-16lx offset:%-16lx pmda:%-16lx", pud_page_vaddr(pudv), _pmd_offset(vaddr) * sizeof(pgd_t), pmda);
+ if (!readmem(PADDR, (unsigned long long)pmda, &pmdv, sizeof(pmdv))) {
+ ERRMSG("Can't read pmd\n");
+ return NOT_PADDR;
+ }
+ DEBUG_MSG(" pmdv:%-16lx\n", pmdv);
+
+ ptea = pte_offset(&pmdv, vaddr);
+ DEBUG_MSG("pte:%-16lx offset:%-16lx ptea:%-16lx", pmd_page_vaddr(pmdv), _pte_offset(vaddr) * sizeof(pgd_t), ptea);
+ if (!readmem(PADDR, (unsigned long long)ptea, &ptev, sizeof(ptev))) {
+ ERRMSG("Can't read pte\n");
+ return NOT_PADDR;
+ }
+ DEBUG_MSG(" ptev:%-16lx\n", ptev);
+
+ if (pte_present(ptev)) {
+ paddr = ((pte_val(ptev) & _PFN_MASK) >> (_PTE_FLAGS_BITS-PAGE_SHIFT)) + (vaddr & ((1 << PAGE_SHIFT) - 1));
+ DEBUG_MSG("paddr:%-16lx", paddr);
+ }
+ pte_val(ptev) = 0;
+ readmem(PADDR, (unsigned long long)paddr, &ptev, sizeof(ptev));
+ DEBUG_MSG(" value:%-16lx\n", ptev);
+ return paddr;
+}
+
+#endif /* __sw_64__ */
diff -Naru ./makedumpfile-1.7.4/makedumpfile.h ./makedumpfile-1.7.4-sw64/makedumpfile.h
--- ./makedumpfile-1.7.4/makedumpfile.h 2025-04-01 08:34:04.990967629 +0800
+++ ./makedumpfile-1.7.4-sw64/makedumpfile.h 2025-04-01 08:37:38.886978748 +0800
@@ -829,6 +829,47 @@
#endif /* __s390x__ */
+#ifdef __sw_64__
+//#define __PAGE_OFFSET (info->page_size - 1)
+#define KERNELBASE (0)
+#define KVBASE KERNELBASE
+//#define _SECTION_SIZE_BITS (28)
+//#define _MAX_PHYSMEM_BITS_ORIG (42)
+//#define _MAX_PHYSMEM_BITS_3_3 (46)
+//
+///* Bits in the segment/region table address-space-control-element */
+//#define _ASCE_TYPE_MASK 0x0c
+//#define _ASCE_TABLE_LENGTH 0x03 /* region table length */
+//
+//#define TABLE_LEVEL(x) (((x) & _ASCE_TYPE_MASK) >> 2)
+//#define TABLE_LENGTH(x) ((x) & _ASCE_TABLE_LENGTH)
+//
+///* Bits in the region table entry */
+//#define _REGION_ENTRY_ORIGIN ~0xfffUL /* region table origin*/
+//#define _REGION_ENTRY_TYPE_MASK 0x0c /* region table type mask */
+//#define _REGION_ENTRY_INVALID 0x20 /* invalid region table entry */
+//#define _REGION_ENTRY_LENGTH 0x03 /* region table length */
+//#define _REGION_ENTRY_LARGE 0x400
+//#define _REGION_OFFSET_MASK 0x7ffUL /* region/segment table offset mask */
+//
+//#define RSG_TABLE_LEVEL(x) (((x) & _REGION_ENTRY_TYPE_MASK) >> 2)
+//#define RSG_TABLE_LENGTH(x) ((x) & _REGION_ENTRY_LENGTH)
+//
+///* Bits in the segment table entry */
+//#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL
+//#define _SEGMENT_ENTRY_LARGE 0x400
+//#define _SEGMENT_ENTRY_CO 0x100
+//#define _SEGMENT_PAGE_SHIFT 31
+//#define _SEGMENT_INDEX_SHIFT 20
+//
+///* Hardware bits in the page table entry */
+//#define _PAGE_ZERO 0x800 /* Bit pos 52 must conatin zero */
+//#define _PAGE_INVALID 0x400 /* HW invalid bit */
+//#define _PAGE_INDEX_SHIFT 12
+//#define _PAGE_OFFSET_MASK 0xffUL /* page table offset mask */
+
+#endif /* __sw_64__ */
+
#ifdef __ia64__ /* ia64 */
#define REGION_SHIFT (61)
@@ -1253,6 +1294,21 @@
#define arch_crashkernel_mem_size() stub_false()
#endif /* s390x */
+#ifdef __sw_64__ /* sw_64 */
+int get_machdep_info_sw_64(void);
+unsigned long long vaddr_to_paddr_sw_64(unsigned long vaddr);
+//int is_iomem_phys_addr_s390x(unsigned long addr);
+#define find_vmemmap() stub_false()
+#define get_phys_base() stub_true()
+#define get_machdep_info() get_machdep_info_sw_64()
+#define get_versiondep_info() stub_true()
+#define get_kaslr_offset(X) stub_false()
+#define vaddr_to_paddr(X) vaddr_to_paddr_sw_64(X)
+#define paddr_to_vaddr(X) paddr_to_vaddr_general(X)
+#define is_phys_addr(X) stub_true_ul(X)
+#define arch_crashkernel_mem_size() stub_false()
+#endif /* sw_64 */
+
#ifdef __ia64__ /* ia64 */
int get_phys_base_ia64(void);
int get_machdep_info_ia64(void);
@@ -2504,6 +2560,12 @@
#define get_xen_info_arch(X) FALSE
#endif /* s390x */
+#ifdef __sw_64__ /* sw_64 */
+#define kvtop_xen(X) FALSE
+#define get_xen_basic_info_arch(X) FALSE
+#define get_xen_info_arch(X) FALSE
+#endif /* sw_64 */
+
#ifdef __sparc64__ /* sparc64 */
#define kvtop_xen(X) FALSE
#define get_xen_basic_info_arch(X) FALSE
diff -Naru ./makedumpfile-1.7.4/Makefile ./makedumpfile-1.7.4-sw64/Makefile
--- ./makedumpfile-1.7.4/Makefile 2025-04-01 08:34:04.978967628 +0800
+++ ./makedumpfile-1.7.4-sw64/Makefile 2025-04-01 08:37:38.886978748 +0800
@@ -47,7 +48,7 @@
SRC_BASE = makedumpfile.c makedumpfile.h diskdump_mod.h sadump_mod.h sadump_info.h
SRC_PART = print_info.c dwarf_info.c elf_info.c erase_info.c sadump_info.c cache.c tools.c printk.c detect_cycle.c
OBJ_PART=$(patsubst %.c,%.o,$(SRC_PART))
-SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c arch/riscv64.c
+SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c arch/s390x.c arch/ppc.c arch/sparc64.c arch/mips64.c arch/loongarch64.c arch/riscv64.c arch/sw_64.c
OBJ_ARCH=$(patsubst %.c,%.o,$(SRC_ARCH))
LIBS = -ldw -lbz2 -ldl -lelf -lz
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