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kexec-tools/fix-add-64-bit-loongArch-support-2.patch
doupengda e96510680d add loongarch64 support
2022-11-17 09:38:40 +08:00

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From dd302cc20cf48e312e608ebf2946e8b5432881c7 Mon Sep 17 00:00:00 2001
From: wu-leilei <wu18740459704@163.com>
Date: Tue, 19 Apr 2022 11:51:24 +0800
Subject: [PATCH] add 64 bit loongArch support
---
makedumpfile-1.7.0/Makefile | 2 +-
makedumpfile-1.7.0/arch/loongarch64.c | 108 ++++++++++++++++++++++++++
makedumpfile-1.7.0/makedumpfile.h | 55 +++++++++++++
3 files changed, 164 insertions(+), 1 deletion(-)
create mode 100644 makedumpfile-1.7.0/arch/loongarch64.c
diff --git a/makedumpfile-1.7.0/Makefile b/makedumpfile-1.7.0/Makefile
index 35bc04d..5940450 100644
--- a/makedumpfile-1.7.0/Makefile
+++ b/makedumpfile-1.7.0/Makefile
@@ -48,7 +48,7 @@ endif
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
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
+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
OBJ_ARCH=$(patsubst %.c,%.o,$(SRC_ARCH))
LIBS = -ldw -lbz2 -ldl -lelf -lz
diff --git a/makedumpfile-1.7.0/arch/loongarch64.c b/makedumpfile-1.7.0/arch/loongarch64.c
new file mode 100644
index 0000000..338da6b
--- /dev/null
+++ b/makedumpfile-1.7.0/arch/loongarch64.c
@@ -0,0 +1,108 @@
+/*
+ * loongarch64.c
+ *
+ * Copyright (C) 2021 Loongson Technology Co., Ltd.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+#ifdef __loongarch64
+
+#include "../print_info.h"
+#include "../elf_info.h"
+#include "../makedumpfile.h"
+
+int
+get_phys_base_loongarch64(void)
+{
+ info->phys_base = 0ULL;
+
+ DEBUG_MSG("phys_base : %lx\n", info->phys_base);
+
+ return TRUE;
+}
+
+int
+get_machdep_info_loongarch64(void)
+{
+ info->section_size_bits = _SECTION_SIZE_BITS;
+
+ /* Check if we can get MAX_PHYSMEM_BITS from vmcoreinfo */
+ if (NUMBER(MAX_PHYSMEM_BITS) != NOT_FOUND_NUMBER)
+ info->max_physmem_bits = NUMBER(MAX_PHYSMEM_BITS);
+ else
+ info->max_physmem_bits = _MAX_PHYSMEM_BITS;
+
+ DEBUG_MSG("max_physmem_bits : %ld\n", info->max_physmem_bits);
+ DEBUG_MSG("section_size_bits: %ld\n", info->section_size_bits);
+
+ return TRUE;
+}
+
+int
+get_versiondep_info_loongarch64(void)
+{
+ info->page_offset = 0x9000000000000000ULL;
+
+ DEBUG_MSG("page_offset : %lx\n", info->page_offset);
+
+ return TRUE;
+}
+
+unsigned long long
+vaddr_to_paddr_loongarch64(unsigned long vaddr)
+{
+ unsigned long long paddr = NOT_PADDR;
+ pgd_t *pgda, pgdv;
+ pmd_t *pmda, pmdv;
+ pte_t *ptea, ptev;
+
+ if(vaddr >=0x8000000000000000ULL && vaddr < 0xc000000000000000ULL)
+ return vaddr & ((1ULL << MAX_PHYSMEM_BITS()) - 1);
+
+ if (SYMBOL(swapper_pg_dir) == NOT_FOUND_SYMBOL) {
+ ERRMSG("Can't get the symbol of swapper_pg_dir.\n");
+ return NOT_PADDR;
+ }
+
+ pgda = pgd_offset(SYMBOL(swapper_pg_dir), vaddr);
+ if (!readmem(VADDR, (unsigned long long)pgda, &pgdv, sizeof(pgdv))) {
+ ERRMSG("Can't read pgd\n");
+ return NOT_PADDR;
+ }
+
+ pmda = pmd_offset(&pgdv, vaddr);
+ if (!readmem(VADDR, (unsigned long long)pmda, &pmdv, sizeof(pmdv))) {
+ ERRMSG("Can't read pmd\n");
+ return NOT_PADDR;
+ }
+
+ if (pmdv & _PAGE_HUGE) {
+ paddr = (pmdv & PMD_MASK) + (vaddr & (PMD_SIZE - 1));
+ return paddr;
+ }
+
+ ptea = pte_offset(&pmdv, vaddr);
+ if (!readmem(VADDR, (unsigned long long)ptea, &ptev, sizeof(ptev))) {
+ ERRMSG("Can't read pte\n");
+ return NOT_PADDR;
+ }
+
+ if (!(ptev & _PAGE_PRESENT)) {
+ ERRMSG("Can't get a valid pte.\n");
+ return NOT_PADDR;
+ } else {
+ paddr = PAGEBASE(ptev) + (vaddr & (PAGESIZE() - 1));
+ }
+
+ return paddr;
+}
+
+#endif /* loongarch64 */
diff --git a/makedumpfile-1.7.0/makedumpfile.h b/makedumpfile-1.7.0/makedumpfile.h
index e59239d..fee3989 100644
--- a/makedumpfile-1.7.0/makedumpfile.h
+++ b/makedumpfile-1.7.0/makedumpfile.h
@@ -996,6 +996,39 @@ typedef unsigned long pgd_t;
#endif /* mips64 */
+#ifdef __loongarch64
+#define KVBASE (0x8000000000000000UL)
+#define _SECTION_SIZE_BITS (28)
+#define _MAX_PHYSMEM_BITS (48)
+#define _PAGE_PRESENT (1 << 7)
+#define _PAGE_HUGE (1 << 6)
+
+typedef unsigned long pte_t;
+typedef unsigned long pmd_t;
+typedef unsigned long pgd_t;
+
+#define PAGE_MASK (~(PAGESIZE() - 1))
+#define PMD_MASK (~(PMD_SIZE - 1))
+#define PMD_SHIFT ((PAGESHIFT() - 3) * 2 + 3)
+#define PMD_SIZE (1UL << PMD_SHIFT)
+#define PGDIR_SHIFT ((PAGESHIFT() - 3) * 3 + 3)
+#define PTRS_PER_PTE (1 << (PAGESHIFT() - 3))
+#define PTRS_PER_PMD PTRS_PER_PTE
+#define PTRS_PER_PGD PTRS_PER_PTE
+
+#define pte_index(vaddr) (((vaddr) >> PAGESHIFT()) & (PTRS_PER_PTE - 1))
+#define pmd_page_paddr(pmd) (pmd & (int32_t)PAGE_MASK)
+#define pte_offset(dir, vaddr) ((pte_t*)pmd_page_paddr((*dir)) + pte_index(vaddr))
+
+#define pmd_index(vaddr) (((vaddr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
+#define pgd_page_paddr(pgd) (pgd & (int32_t)PAGE_MASK)
+#define pmd_offset(pgd, vaddr) ((pmd_t *)pgd_page_paddr((*pgd)) + pmd_index(vaddr))
+
+#define pgd_index(vaddr) (((vaddr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
+#define pgd_offset(pgdir, vaddr) ((pgd_t *)(pgdir) + pgd_index(vaddr))
+
+#endif /* loongarch64 */
+
/*
* The function of dependence on machine
*/
@@ -1167,6 +1200,22 @@ unsigned long long vaddr_to_paddr_mips64(unsigned long vaddr);
#define arch_crashkernel_mem_size() stub_false()
#endif /* mips64 */
+#ifdef __loongarch64 /* loongarch64 */
+int get_phys_base_loongarch64(void);
+int get_machdep_info_loongarch64(void);
+int get_versiondep_info_loongarch64(void);
+unsigned long long vaddr_to_paddr_loongarch64(unsigned long vaddr);
+#define find_vmemmap() stub_false()
+#define get_phys_base() get_phys_base_loongarch64()
+#define get_machdep_info() get_machdep_info_loongarch64()
+#define get_versiondep_info() get_versiondep_info_loongarch64()
+#define get_kaslr_offset(X) stub_false()
+#define vaddr_to_paddr(X) vaddr_to_paddr_loongarch64(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 /* loongarch64 */
+
typedef unsigned long long mdf_pfn_t;
#ifndef ARCH_PFN_OFFSET
@@ -2301,6 +2350,12 @@ int get_xen_info_ia64(void);
#define get_xen_info_arch(X) FALSE
#endif /* mips64 */
+#ifdef __loongarch64 /* loongarch64 */
+#define kvtop_xen(X) FALSE
+#define get_xen_basic_info_arch(X) FALSE
+#define get_xen_info_arch(X) FALSE
+#endif /* loongarch64 */
+
struct cycle {
mdf_pfn_t start_pfn;
mdf_pfn_t end_pfn;
--
2.27.0
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