add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/riscv/kernel/module.c
..
..
@@ -1,13 +1,5 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License as published by
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- *  the Free Software Foundation; either version 2 of the License, or
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- *  (at your option) any later version.
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- *
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- *  This program is distributed in the hope that it will be useful,
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- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *  GNU General Public License for more details.
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  *
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  *  Copyright (C) 2017 Zihao Yu
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  */
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..
@@ -18,8 +10,21 @@
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 #include <linux/moduleloader.h>
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 #include <linux/vmalloc.h>
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 #include <linux/sizes.h>
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-#include <asm/pgtable.h>
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+#include <linux/pgtable.h>
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 #include <asm/sections.h>
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+
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+/*
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+ * The auipc+jalr instruction pair can reach any PC-relative offset
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+ * in the range [-2^31 - 2^11, 2^31 - 2^11)
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+ */
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+static bool riscv_insn_valid_32bit_offset(ptrdiff_t val)
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+{
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+#ifdef CONFIG_32BIT
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+	return true;
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+#else
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+	return (-(1L << 31) - (1L << 11)) <= val && val < ((1L << 31) - (1L << 11));
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+#endif
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+}
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28
 
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 static int apply_r_riscv_32_rela(struct module *me, u32 *location, Elf_Addr v)
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 {
..
..
@@ -103,7 +108,7 @@
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 	ptrdiff_t offset = (void *)v - (void *)location;
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 	s32 hi20;
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110
 
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-	if (offset != (s32)offset) {
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+	if (!riscv_insn_valid_32bit_offset(offset)) {
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 		pr_err(
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 		  "%s: target %016llx can not be addressed by the 32-bit offset from PC = %p\n",
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 		  me->name, (long long)v, location);
..
..
@@ -145,7 +150,7 @@
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 {
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 	s32 hi20;
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152
 
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-	if (IS_ENABLED(CMODEL_MEDLOW)) {
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+	if (IS_ENABLED(CONFIG_CMODEL_MEDLOW)) {
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 		pr_err(
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 		  "%s: target %016llx can not be addressed by the 32-bit offset from PC = %p\n",
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 		  me->name, (long long)v, location);
..
..
@@ -205,10 +210,9 @@
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 				       Elf_Addr v)
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 {
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 	ptrdiff_t offset = (void *)v - (void *)location;
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-	s32 fill_v = offset;
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 	u32 hi20, lo12;
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-	if (offset != fill_v) {
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+	if (!riscv_insn_valid_32bit_offset(offset)) {
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 		/* Only emit the plt entry if offset over 32-bit range */
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 		if (IS_ENABLED(CONFIG_MODULE_SECTIONS)) {
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 			offset = module_emit_plt_entry(me, v);
..
..
@@ -232,10 +236,9 @@
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 				   Elf_Addr v)
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 {
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 	ptrdiff_t offset = (void *)v - (void *)location;
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-	s32 fill_v = offset;
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 	u32 hi20, lo12;
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-	if (offset != fill_v) {
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+	if (!riscv_insn_valid_32bit_offset(offset)) {
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 		pr_err(
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 		  "%s: target %016llx can not be addressed by the 32-bit offset from PC = %p\n",
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 		  me->name, (long long)v, location);
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@@ -271,10 +274,24 @@
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 	return 0;
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 }
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276
 
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+static int apply_r_riscv_add64_rela(struct module *me, u32 *location,
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+				    Elf_Addr v)
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+{
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+	*(u64 *)location += (u64)v;
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+	return 0;
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+}
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+
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 static int apply_r_riscv_sub32_rela(struct module *me, u32 *location,
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 				    Elf_Addr v)
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 {
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 	*(u32 *)location -= (u32)v;
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+	return 0;
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+}
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+
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+static int apply_r_riscv_sub64_rela(struct module *me, u32 *location,
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+				    Elf_Addr v)
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+{
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+	*(u64 *)location -= (u64)v;
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 	return 0;
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 }
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..
..
@@ -298,7 +315,9 @@
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 	[R_RISCV_RELAX]			= apply_r_riscv_relax_rela,
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 	[R_RISCV_ALIGN]			= apply_r_riscv_align_rela,
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 	[R_RISCV_ADD32]			= apply_r_riscv_add32_rela,
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+	[R_RISCV_ADD64]			= apply_r_riscv_add64_rela,
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 	[R_RISCV_SUB32]			= apply_r_riscv_sub32_rela,
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+	[R_RISCV_SUB64]			= apply_r_riscv_sub64_rela,
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 };
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 int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
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@@ -327,8 +346,8 @@
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 			/* Ignore unresolved weak symbol */
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 			if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
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 				continue;
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-			pr_warning("%s: Unknown symbol %s\n",
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-				   me->name, strtab + sym->st_name);
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+			pr_warn("%s: Unknown symbol %s\n",
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+				me->name, strtab + sym->st_name);
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 			return -ENOENT;
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 		}
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