From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/arm64/include/asm/processor.h | 142 +++++++++++++++++++++++++++++-----------------
1 files changed, 89 insertions(+), 53 deletions(-)
diff --git a/kernel/arch/arm64/include/asm/processor.h b/kernel/arch/arm64/include/asm/processor.h
index e9af2b4..3d1df37 100644
--- a/kernel/arch/arm64/include/asm/processor.h
+++ b/kernel/arch/arm64/include/asm/processor.h
@@ -1,59 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Based on arch/arm/include/asm/processor.h
*
* Copyright (C) 1995-1999 Russell King
* Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_PROCESSOR_H
#define __ASM_PROCESSOR_H
-#define TASK_SIZE_64 (UL(1) << VA_BITS)
-
-#define KERNEL_DS UL(-1)
-#define USER_DS (TASK_SIZE_64 - 1)
-
-#ifndef __ASSEMBLY__
+#define KERNEL_DS UL(-1)
+#define USER_DS ((UL(1) << VA_BITS) - 1)
/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
+ * On arm64 systems, unaligned accesses by the CPU are cheap, and so there is
+ * no point in shifting all network buffers by 2 bytes just to make some IP
+ * header fields appear aligned in memory, potentially sacrificing some DMA
+ * performance on some platforms.
*/
-#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+#define NET_IP_ALIGN 0
-#ifdef __KERNEL__
+#define MTE_CTRL_GCR_USER_EXCL_SHIFT 0
+#define MTE_CTRL_GCR_USER_EXCL_MASK 0xffff
+
+#define MTE_CTRL_TCF_SYNC (1UL << 16)
+#define MTE_CTRL_TCF_ASYNC (1UL << 17)
+
+#ifndef __ASSEMBLY__
#include <linux/build_bug.h>
#include <linux/cache.h>
#include <linux/init.h>
#include <linux/stddef.h>
#include <linux/string.h>
+#include <linux/thread_info.h>
+#include <linux/android_vendor.h>
#include <vdso/processor.h>
#include <asm/alternative.h>
#include <asm/cpufeature.h>
#include <asm/hw_breakpoint.h>
+#include <asm/kasan.h>
#include <asm/lse.h>
#include <asm/pgtable-hwdef.h>
+#include <asm/pointer_auth.h>
#include <asm/ptrace.h>
+#include <asm/spectre.h>
#include <asm/types.h>
/*
* TASK_SIZE - the maximum size of a user space task.
* TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area.
*/
+
+#define DEFAULT_MAP_WINDOW_64 (UL(1) << VA_BITS_MIN)
+#define TASK_SIZE_64 (UL(1) << vabits_actual)
+
#ifdef CONFIG_COMPAT
#if defined(CONFIG_ARM64_64K_PAGES) && defined(CONFIG_KUSER_HELPERS)
/*
@@ -68,13 +70,21 @@
TASK_SIZE_32 : TASK_SIZE_64)
#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk, TIF_32BIT) ? \
TASK_SIZE_32 : TASK_SIZE_64)
+#define DEFAULT_MAP_WINDOW (test_thread_flag(TIF_32BIT) ? \
+ TASK_SIZE_32 : DEFAULT_MAP_WINDOW_64)
#else
#define TASK_SIZE TASK_SIZE_64
+#define DEFAULT_MAP_WINDOW DEFAULT_MAP_WINDOW_64
#endif /* CONFIG_COMPAT */
-#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 4))
-
+#ifdef CONFIG_ARM64_FORCE_52BIT
#define STACK_TOP_MAX TASK_SIZE_64
+#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 4))
+#else
+#define STACK_TOP_MAX DEFAULT_MAP_WINDOW_64
+#define TASK_UNMAPPED_BASE (PAGE_ALIGN(DEFAULT_MAP_WINDOW / 4))
+#endif /* CONFIG_ARM64_FORCE_52BIT */
+
#ifdef CONFIG_COMPAT
#define AARCH32_VECTORS_BASE 0xffff0000
#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
@@ -82,6 +92,15 @@
#else
#define STACK_TOP STACK_TOP_MAX
#endif /* CONFIG_COMPAT */
+
+#ifndef CONFIG_ARM64_FORCE_52BIT
+#define arch_get_mmap_end(addr) ((addr > DEFAULT_MAP_WINDOW) ? TASK_SIZE :\
+ DEFAULT_MAP_WINDOW)
+
+#define arch_get_mmap_base(addr, base) ((addr > DEFAULT_MAP_WINDOW) ? \
+ base + TASK_SIZE - DEFAULT_MAP_WINDOW :\
+ base)
+#endif /* CONFIG_ARM64_FORCE_52BIT */
extern phys_addr_t arm64_dma_phys_limit;
#define ARCH_LOW_ADDRESS_LIMIT (arm64_dma_phys_limit - 1)
@@ -129,6 +148,8 @@
struct user_fpsimd_state fpsimd_state;
} uw;
+ ANDROID_VENDOR_DATA(1);
+
unsigned int fpsimd_cpu;
void *sve_state; /* SVE registers, if any */
unsigned int sve_vl; /* SVE vector length */
@@ -136,7 +157,19 @@
unsigned long fault_address; /* fault info */
unsigned long fault_code; /* ESR_EL1 value */
struct debug_info debug; /* debugging */
+#ifdef CONFIG_ARM64_PTR_AUTH
+ struct ptrauth_keys_user keys_user;
+ struct ptrauth_keys_kernel keys_kernel;
+#endif
+#ifdef CONFIG_ARM64_MTE
+ u64 mte_ctrl;
+#endif
+ u64 sctlr_user;
};
+
+#define SCTLR_USER_MASK \
+ (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | SCTLR_ELx_ENDA | SCTLR_ELx_ENDB | \
+ SCTLR_EL1_TCF0_MASK)
static inline void arch_thread_struct_whitelist(unsigned long *offset,
unsigned long *size)
@@ -174,19 +207,13 @@
static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
{
+ s32 previous_syscall = regs->syscallno;
memset(regs, 0, sizeof(*regs));
- forget_syscall(regs);
+ regs->syscallno = previous_syscall;
regs->pc = pc;
-}
-static inline void set_ssbs_bit(struct pt_regs *regs)
-{
- regs->pstate |= PSR_SSBS_BIT;
-}
-
-static inline void set_compat_ssbs_bit(struct pt_regs *regs)
-{
- regs->pstate |= PSR_AA32_SSBS_BIT;
+ if (system_uses_irq_prio_masking())
+ regs->pmr_save = GIC_PRIO_IRQON;
}
static inline void start_thread(struct pt_regs *regs, unsigned long pc,
@@ -194,10 +221,7 @@
{
start_thread_common(regs, pc);
regs->pstate = PSR_MODE_EL0t;
-
- if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
- set_ssbs_bit(regs);
-
+ spectre_v4_enable_task_mitigation(current);
regs->sp = sp;
}
@@ -214,12 +238,22 @@
regs->pstate |= PSR_AA32_E_BIT;
#endif
- if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
- set_compat_ssbs_bit(regs);
-
+ spectre_v4_enable_task_mitigation(current);
regs->compat_sp = sp;
}
#endif
+
+static __always_inline bool is_ttbr0_addr(unsigned long addr)
+{
+ /* entry assembly clears tags for TTBR0 addrs */
+ return addr < TASK_SIZE;
+}
+
+static __always_inline bool is_ttbr1_addr(unsigned long addr)
+{
+ /* TTBR1 addresses may have a tag if KASAN_SW_TAGS is in use */
+ return arch_kasan_reset_tag(addr) >= PAGE_OFFSET;
+}
/* Forward declaration, a strange C thing */
struct task_struct;
@@ -228,6 +262,8 @@
extern void release_thread(struct task_struct *);
unsigned long get_wchan(struct task_struct *p);
+
+void update_sctlr_el1(u64 sctlr);
/* Thread switching */
extern struct task_struct *cpu_switch_to(struct task_struct *prev,
@@ -262,14 +298,6 @@
"nop") : : "p" (ptr));
}
-#define HAVE_ARCH_PICK_MMAP_LAYOUT
-
-#endif
-
-void cpu_enable_pan(const struct arm64_cpu_capabilities *__unused);
-void cpu_enable_cache_maint_trap(const struct arm64_cpu_capabilities *__unused);
-void cpu_clear_disr(const struct arm64_cpu_capabilities *__unused);
-
extern unsigned long __ro_after_init signal_minsigstksz; /* sigframe size */
extern void __init minsigstksz_setup(void);
@@ -288,12 +316,20 @@
#define SVE_SET_VL(arg) sve_set_current_vl(arg)
#define SVE_GET_VL() sve_get_current_vl()
+/* PR_PAC_RESET_KEYS prctl */
+#define PAC_RESET_KEYS(tsk, arg) ptrauth_prctl_reset_keys(tsk, arg)
+
+/* PR_PAC_{SET,GET}_ENABLED_KEYS prctl */
+#define PAC_SET_ENABLED_KEYS(tsk, keys, enabled) \
+ ptrauth_set_enabled_keys(tsk, keys, enabled)
+#define PAC_GET_ENABLED_KEYS(tsk) ptrauth_get_enabled_keys(tsk)
+
#ifdef CONFIG_ARM64_TAGGED_ADDR_ABI
/* PR_{SET,GET}_TAGGED_ADDR_CTRL prctl */
-long set_tagged_addr_ctrl(unsigned long arg);
-long get_tagged_addr_ctrl(void);
-#define SET_TAGGED_ADDR_CTRL(arg) set_tagged_addr_ctrl(arg)
-#define GET_TAGGED_ADDR_CTRL() get_tagged_addr_ctrl()
+long set_tagged_addr_ctrl(struct task_struct *task, unsigned long arg);
+long get_tagged_addr_ctrl(struct task_struct *task);
+#define SET_TAGGED_ADDR_CTRL(arg) set_tagged_addr_ctrl(current, arg)
+#define GET_TAGGED_ADDR_CTRL() get_tagged_addr_ctrl(current)
#endif
/*
--
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