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-rw-r--r--arch/arm/include/asm/assembler.h17
-rw-r--r--arch/arm/include/asm/cp15.h14
-rw-r--r--arch/arm/include/asm/cputype.h44
-rw-r--r--arch/arm/include/asm/glue-cache.h27
-rw-r--r--arch/arm/include/asm/glue-df.h8
-rw-r--r--arch/arm/include/asm/glue-proc.h9
-rw-r--r--arch/arm/include/asm/hardware/pci_v3.h186
-rw-r--r--arch/arm/include/asm/irqflags.h22
-rw-r--r--arch/arm/include/asm/mach/arch.h5
-rw-r--r--arch/arm/include/asm/mach/pci.h17
-rw-r--r--arch/arm/include/asm/psci.h9
-rw-r--r--arch/arm/include/asm/ptrace.h4
-rw-r--r--arch/arm/include/asm/system_info.h1
-rw-r--r--arch/arm/include/asm/v7m.h44
14 files changed, 206 insertions, 201 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 05ee9eebad6b..a5fef710af32 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -136,7 +136,11 @@
* assumes FIQs are enabled, and that the processor is in SVC mode.
*/
.macro save_and_disable_irqs, oldcpsr
+#ifdef CONFIG_CPU_V7M
+ mrs \oldcpsr, primask
+#else
mrs \oldcpsr, cpsr
+#endif
disable_irq
.endm
@@ -150,7 +154,11 @@
* guarantee that this will preserve the flags.
*/
.macro restore_irqs_notrace, oldcpsr
+#ifdef CONFIG_CPU_V7M
+ msr primask, \oldcpsr
+#else
msr cpsr_c, \oldcpsr
+#endif
.endm
.macro restore_irqs, oldcpsr
@@ -229,7 +237,14 @@
#endif
.endm
-#ifdef CONFIG_THUMB2_KERNEL
+#if defined(CONFIG_CPU_V7M)
+ /*
+ * setmode is used to assert to be in svc mode during boot. For v7-M
+ * this is done in __v7m_setup, so setmode can be empty here.
+ */
+ .macro setmode, mode, reg
+ .endm
+#elif defined(CONFIG_THUMB2_KERNEL)
.macro setmode, mode, reg
mov \reg, #\mode
msr cpsr_c, \reg
diff --git a/arch/arm/include/asm/cp15.h b/arch/arm/include/asm/cp15.h
index 1f3262e99d81..cedd3721318b 100644
--- a/arch/arm/include/asm/cp15.h
+++ b/arch/arm/include/asm/cp15.h
@@ -61,6 +61,20 @@ static inline void set_cr(unsigned int val)
isb();
}
+static inline unsigned int get_auxcr(void)
+{
+ unsigned int val;
+ asm("mrc p15, 0, %0, c1, c0, 1 @ get AUXCR" : "=r" (val));
+ return val;
+}
+
+static inline void set_auxcr(unsigned int val)
+{
+ asm volatile("mcr p15, 0, %0, c1, c0, 1 @ set AUXCR"
+ : : "r" (val));
+ isb();
+}
+
#ifndef CONFIG_SMP
extern void adjust_cr(unsigned long mask, unsigned long set);
#endif
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index dba62cb1ad08..d7deb62554c9 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -10,6 +10,22 @@
#define CPUID_TLBTYPE 3
#define CPUID_MPIDR 5
+#ifdef CONFIG_CPU_V7M
+#define CPUID_EXT_PFR0 0x40
+#define CPUID_EXT_PFR1 0x44
+#define CPUID_EXT_DFR0 0x48
+#define CPUID_EXT_AFR0 0x4c
+#define CPUID_EXT_MMFR0 0x50
+#define CPUID_EXT_MMFR1 0x54
+#define CPUID_EXT_MMFR2 0x58
+#define CPUID_EXT_MMFR3 0x5c
+#define CPUID_EXT_ISAR0 0x60
+#define CPUID_EXT_ISAR1 0x64
+#define CPUID_EXT_ISAR2 0x68
+#define CPUID_EXT_ISAR3 0x6c
+#define CPUID_EXT_ISAR4 0x70
+#define CPUID_EXT_ISAR5 0x74
+#else
#define CPUID_EXT_PFR0 "c1, 0"
#define CPUID_EXT_PFR1 "c1, 1"
#define CPUID_EXT_DFR0 "c1, 2"
@@ -24,6 +40,7 @@
#define CPUID_EXT_ISAR3 "c2, 3"
#define CPUID_EXT_ISAR4 "c2, 4"
#define CPUID_EXT_ISAR5 "c2, 5"
+#endif
#define MPIDR_SMP_BITMASK (0x3 << 30)
#define MPIDR_SMP_VALUE (0x2 << 30)
@@ -81,7 +98,23 @@ extern unsigned int processor_id;
__val; \
})
-#else /* ifdef CONFIG_CPU_CP15 */
+#elif defined(CONFIG_CPU_V7M)
+
+#include <asm/io.h>
+#include <asm/v7m.h>
+
+#define read_cpuid(reg) \
+ ({ \
+ WARN_ON_ONCE(1); \
+ 0; \
+ })
+
+static inline unsigned int __attribute_const__ read_cpuid_ext(unsigned offset)
+{
+ return readl(BASEADDR_V7M_SCB + offset);
+}
+
+#else /* ifdef CONFIG_CPU_CP15 / elif defined (CONFIG_CPU_V7M) */
/*
* read_cpuid and read_cpuid_ext should only ever be called on machines that
@@ -108,7 +141,14 @@ static inline unsigned int __attribute_const__ read_cpuid_id(void)
return read_cpuid(CPUID_ID);
}
-#else /* ifdef CONFIG_CPU_CP15 */
+#elif defined(CONFIG_CPU_V7M)
+
+static inline unsigned int __attribute_const__ read_cpuid_id(void)
+{
+ return readl(BASEADDR_V7M_SCB + V7M_SCB_CPUID);
+}
+
+#else /* ifdef CONFIG_CPU_CP15 / elif defined(CONFIG_CPU_V7M) */
static inline unsigned int __attribute_const__ read_cpuid_id(void)
{
diff --git a/arch/arm/include/asm/glue-cache.h b/arch/arm/include/asm/glue-cache.h
index ea289e1435e7..c81adc08b3fb 100644
--- a/arch/arm/include/asm/glue-cache.h
+++ b/arch/arm/include/asm/glue-cache.h
@@ -117,10 +117,37 @@
# endif
#endif
+#if defined(CONFIG_CPU_V7M)
+# ifdef _CACHE
+# define MULTI_CACHE 1
+# else
+# define _CACHE nop
+# endif
+#endif
+
#if !defined(_CACHE) && !defined(MULTI_CACHE)
#error Unknown cache maintenance model
#endif
+#ifndef __ASSEMBLER__
+extern inline void nop_flush_icache_all(void) { }
+extern inline void nop_flush_kern_cache_all(void) { }
+extern inline void nop_flush_kern_cache_louis(void) { }
+extern inline void nop_flush_user_cache_all(void) { }
+extern inline void nop_flush_user_cache_range(unsigned long a,
+ unsigned long b, unsigned int c) { }
+
+extern inline void nop_coherent_kern_range(unsigned long a, unsigned long b) { }
+extern inline int nop_coherent_user_range(unsigned long a,
+ unsigned long b) { return 0; }
+extern inline void nop_flush_kern_dcache_area(void *a, size_t s) { }
+
+extern inline void nop_dma_flush_range(const void *a, const void *b) { }
+
+extern inline void nop_dma_map_area(const void *s, size_t l, int f) { }
+extern inline void nop_dma_unmap_area(const void *s, size_t l, int f) { }
+#endif
+
#ifndef MULTI_CACHE
#define __cpuc_flush_icache_all __glue(_CACHE,_flush_icache_all)
#define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all)
diff --git a/arch/arm/include/asm/glue-df.h b/arch/arm/include/asm/glue-df.h
index b6e9f2c108b5..6b70f1b46a6e 100644
--- a/arch/arm/include/asm/glue-df.h
+++ b/arch/arm/include/asm/glue-df.h
@@ -95,6 +95,14 @@
# endif
#endif
+#ifdef CONFIG_CPU_ABRT_NOMMU
+# ifdef CPU_DABORT_HANDLER
+# define MULTI_DABORT 1
+# else
+# define CPU_DABORT_HANDLER nommu_early_abort
+# endif
+#endif
+
#ifndef CPU_DABORT_HANDLER
#error Unknown data abort handler type
#endif
diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h
index 8017e94acc5e..e6168c0c18e9 100644
--- a/arch/arm/include/asm/glue-proc.h
+++ b/arch/arm/include/asm/glue-proc.h
@@ -239,6 +239,15 @@
# endif
#endif
+#ifdef CONFIG_CPU_V7M
+# ifdef CPU_NAME
+# undef MULTI_CPU
+# define MULTI_CPU
+# else
+# define CPU_NAME cpu_v7m
+# endif
+#endif
+
#ifndef MULTI_CPU
#define cpu_proc_init __glue(CPU_NAME,_proc_init)
#define cpu_proc_fin __glue(CPU_NAME,_proc_fin)
diff --git a/arch/arm/include/asm/hardware/pci_v3.h b/arch/arm/include/asm/hardware/pci_v3.h
deleted file mode 100644
index 2811c7e2cfdf..000000000000
--- a/arch/arm/include/asm/hardware/pci_v3.h
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * arch/arm/include/asm/hardware/pci_v3.h
- *
- * Internal header file PCI V3 chip
- *
- * Copyright (C) ARM Limited
- * Copyright (C) 2000-2001 Deep Blue Solutions 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.
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef ASM_ARM_HARDWARE_PCI_V3_H
-#define ASM_ARM_HARDWARE_PCI_V3_H
-
-/* -------------------------------------------------------------------------------
- * V3 Local Bus to PCI Bridge definitions
- * -------------------------------------------------------------------------------
- * Registers (these are taken from page 129 of the EPC User's Manual Rev 1.04
- * All V3 register names are prefaced by V3_ to avoid clashing with any other
- * PCI definitions. Their names match the user's manual.
- *
- * I'm assuming that I20 is disabled.
- *
- */
-#define V3_PCI_VENDOR 0x00000000
-#define V3_PCI_DEVICE 0x00000002
-#define V3_PCI_CMD 0x00000004
-#define V3_PCI_STAT 0x00000006
-#define V3_PCI_CC_REV 0x00000008
-#define V3_PCI_HDR_CFG 0x0000000C
-#define V3_PCI_IO_BASE 0x00000010
-#define V3_PCI_BASE0 0x00000014
-#define V3_PCI_BASE1 0x00000018
-#define V3_PCI_SUB_VENDOR 0x0000002C
-#define V3_PCI_SUB_ID 0x0000002E
-#define V3_PCI_ROM 0x00000030
-#define V3_PCI_BPARAM 0x0000003C
-#define V3_PCI_MAP0 0x00000040
-#define V3_PCI_MAP1 0x00000044
-#define V3_PCI_INT_STAT 0x00000048
-#define V3_PCI_INT_CFG 0x0000004C
-#define V3_LB_BASE0 0x00000054
-#define V3_LB_BASE1 0x00000058
-#define V3_LB_MAP0 0x0000005E
-#define V3_LB_MAP1 0x00000062
-#define V3_LB_BASE2 0x00000064
-#define V3_LB_MAP2 0x00000066
-#define V3_LB_SIZE 0x00000068
-#define V3_LB_IO_BASE 0x0000006E
-#define V3_FIFO_CFG 0x00000070
-#define V3_FIFO_PRIORITY 0x00000072
-#define V3_FIFO_STAT 0x00000074
-#define V3_LB_ISTAT 0x00000076
-#define V3_LB_IMASK 0x00000077
-#define V3_SYSTEM 0x00000078
-#define V3_LB_CFG 0x0000007A
-#define V3_PCI_CFG 0x0000007C
-#define V3_DMA_PCI_ADR0 0x00000080
-#define V3_DMA_PCI_ADR1 0x00000090
-#define V3_DMA_LOCAL_ADR0 0x00000084
-#define V3_DMA_LOCAL_ADR1 0x00000094
-#define V3_DMA_LENGTH0 0x00000088
-#define V3_DMA_LENGTH1 0x00000098
-#define V3_DMA_CSR0 0x0000008B
-#define V3_DMA_CSR1 0x0000009B
-#define V3_DMA_CTLB_ADR0 0x0000008C
-#define V3_DMA_CTLB_ADR1 0x0000009C
-#define V3_DMA_DELAY 0x000000E0
-#define V3_MAIL_DATA 0x000000C0
-#define V3_PCI_MAIL_IEWR 0x000000D0
-#define V3_PCI_MAIL_IERD 0x000000D2
-#define V3_LB_MAIL_IEWR 0x000000D4
-#define V3_LB_MAIL_IERD 0x000000D6
-#define V3_MAIL_WR_STAT 0x000000D8
-#define V3_MAIL_RD_STAT 0x000000DA
-#define V3_QBA_MAP 0x000000DC
-
-/* PCI COMMAND REGISTER bits
- */
-#define V3_COMMAND_M_FBB_EN (1 << 9)
-#define V3_COMMAND_M_SERR_EN (1 << 8)
-#define V3_COMMAND_M_PAR_EN (1 << 6)
-#define V3_COMMAND_M_MASTER_EN (1 << 2)
-#define V3_COMMAND_M_MEM_EN (1 << 1)
-#define V3_COMMAND_M_IO_EN (1 << 0)
-
-/* SYSTEM REGISTER bits
- */
-#define V3_SYSTEM_M_RST_OUT (1 << 15)
-#define V3_SYSTEM_M_LOCK (1 << 14)
-
-/* PCI_CFG bits
- */
-#define V3_PCI_CFG_M_I2O_EN (1 << 15)
-#define V3_PCI_CFG_M_IO_REG_DIS (1 << 14)
-#define V3_PCI_CFG_M_IO_DIS (1 << 13)
-#define V3_PCI_CFG_M_EN3V (1 << 12)
-#define V3_PCI_CFG_M_RETRY_EN (1 << 10)
-#define V3_PCI_CFG_M_AD_LOW1 (1 << 9)
-#define V3_PCI_CFG_M_AD_LOW0 (1 << 8)
-
-/* PCI_BASE register bits (PCI -> Local Bus)
- */
-#define V3_PCI_BASE_M_ADR_BASE 0xFFF00000
-#define V3_PCI_BASE_M_ADR_BASEL 0x000FFF00
-#define V3_PCI_BASE_M_PREFETCH (1 << 3)
-#define V3_PCI_BASE_M_TYPE (3 << 1)
-#define V3_PCI_BASE_M_IO (1 << 0)
-
-/* PCI MAP register bits (PCI -> Local bus)
- */
-#define V3_PCI_MAP_M_MAP_ADR 0xFFF00000
-#define V3_PCI_MAP_M_RD_POST_INH (1 << 15)
-#define V3_PCI_MAP_M_ROM_SIZE (3 << 10)
-#define V3_PCI_MAP_M_SWAP (3 << 8)
-#define V3_PCI_MAP_M_ADR_SIZE 0x000000F0
-#define V3_PCI_MAP_M_REG_EN (1 << 1)
-#define V3_PCI_MAP_M_ENABLE (1 << 0)
-
-/*
- * LB_BASE0,1 register bits (Local bus -> PCI)
- */
-#define V3_LB_BASE_ADR_BASE 0xfff00000
-#define V3_LB_BASE_SWAP (3 << 8)
-#define V3_LB_BASE_ADR_SIZE (15 << 4)
-#define V3_LB_BASE_PREFETCH (1 << 3)
-#define V3_LB_BASE_ENABLE (1 << 0)
-
-#define V3_LB_BASE_ADR_SIZE_1MB (0 << 4)
-#define V3_LB_BASE_ADR_SIZE_2MB (1 << 4)
-#define V3_LB_BASE_ADR_SIZE_4MB (2 << 4)
-#define V3_LB_BASE_ADR_SIZE_8MB (3 << 4)
-#define V3_LB_BASE_ADR_SIZE_16MB (4 << 4)
-#define V3_LB_BASE_ADR_SIZE_32MB (5 << 4)
-#define V3_LB_BASE_ADR_SIZE_64MB (6 << 4)
-#define V3_LB_BASE_ADR_SIZE_128MB (7 << 4)
-#define V3_LB_BASE_ADR_SIZE_256MB (8 << 4)
-#define V3_LB_BASE_ADR_SIZE_512MB (9 << 4)
-#define V3_LB_BASE_ADR_SIZE_1GB (10 << 4)
-#define V3_LB_BASE_ADR_SIZE_2GB (11 << 4)
-
-#define v3_addr_to_lb_base(a) ((a) & V3_LB_BASE_ADR_BASE)
-
-/*
- * LB_MAP0,1 register bits (Local bus -> PCI)
- */
-#define V3_LB_MAP_MAP_ADR 0xfff0
-#define V3_LB_MAP_TYPE (7 << 1)
-#define V3_LB_MAP_AD_LOW_EN (1 << 0)
-
-#define V3_LB_MAP_TYPE_IACK (0 << 1)
-#define V3_LB_MAP_TYPE_IO (1 << 1)
-#define V3_LB_MAP_TYPE_MEM (3 << 1)
-#define V3_LB_MAP_TYPE_CONFIG (5 << 1)
-#define V3_LB_MAP_TYPE_MEM_MULTIPLE (6 << 1)
-
-#define v3_addr_to_lb_map(a) (((a) >> 16) & V3_LB_MAP_MAP_ADR)
-
-/*
- * LB_BASE2 register bits (Local bus -> PCI IO)
- */
-#define V3_LB_BASE2_ADR_BASE 0xff00
-#define V3_LB_BASE2_SWAP (3 << 6)
-#define V3_LB_BASE2_ENABLE (1 << 0)
-
-#define v3_addr_to_lb_base2(a) (((a) >> 16) & V3_LB_BASE2_ADR_BASE)
-
-/*
- * LB_MAP2 register bits (Local bus -> PCI IO)
- */
-#define V3_LB_MAP2_MAP_ADR 0xff00
-
-#define v3_addr_to_lb_map2(a) (((a) >> 16) & V3_LB_MAP2_MAP_ADR)
-
-#endif
diff --git a/arch/arm/include/asm/irqflags.h b/arch/arm/include/asm/irqflags.h
index 1e6cca55c750..3b763d6652a0 100644
--- a/arch/arm/include/asm/irqflags.h
+++ b/arch/arm/include/asm/irqflags.h
@@ -8,6 +8,16 @@
/*
* CPU interrupt mask handling.
*/
+#ifdef CONFIG_CPU_V7M
+#define IRQMASK_REG_NAME_R "primask"
+#define IRQMASK_REG_NAME_W "primask"
+#define IRQMASK_I_BIT 1
+#else
+#define IRQMASK_REG_NAME_R "cpsr"
+#define IRQMASK_REG_NAME_W "cpsr_c"
+#define IRQMASK_I_BIT PSR_I_BIT
+#endif
+
#if __LINUX_ARM_ARCH__ >= 6
static inline unsigned long arch_local_irq_save(void)
@@ -15,7 +25,7 @@ static inline unsigned long arch_local_irq_save(void)
unsigned long flags;
asm volatile(
- " mrs %0, cpsr @ arch_local_irq_save\n"
+ " mrs %0, " IRQMASK_REG_NAME_R " @ arch_local_irq_save\n"
" cpsid i"
: "=r" (flags) : : "memory", "cc");
return flags;
@@ -129,7 +139,7 @@ static inline unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile(
- " mrs %0, cpsr @ local_save_flags"
+ " mrs %0, " IRQMASK_REG_NAME_R " @ local_save_flags"
: "=r" (flags) : : "memory", "cc");
return flags;
}
@@ -140,7 +150,7 @@ static inline unsigned long arch_local_save_flags(void)
static inline void arch_local_irq_restore(unsigned long flags)
{
asm volatile(
- " msr cpsr_c, %0 @ local_irq_restore"
+ " msr " IRQMASK_REG_NAME_W ", %0 @ local_irq_restore"
:
: "r" (flags)
: "memory", "cc");
@@ -148,8 +158,8 @@ static inline void arch_local_irq_restore(unsigned long flags)
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
- return flags & PSR_I_BIT;
+ return flags & IRQMASK_I_BIT;
}
-#endif
-#endif
+#endif /* ifdef __KERNEL__ */
+#endif /* ifndef __ASM_ARM_IRQFLAGS_H */
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 308ad7d6f98b..75bf07910b81 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -8,6 +8,8 @@
* published by the Free Software Foundation.
*/
+#include <linux/types.h>
+
#ifndef __ASSEMBLY__
struct tag;
@@ -16,8 +18,10 @@ struct pt_regs;
struct smp_operations;
#ifdef CONFIG_SMP
#define smp_ops(ops) (&(ops))
+#define smp_init_ops(ops) (&(ops))
#else
#define smp_ops(ops) (struct smp_operations *)NULL
+#define smp_init_ops(ops) (bool (*)(void))NULL
#endif
struct machine_desc {
@@ -41,6 +45,7 @@ struct machine_desc {
unsigned char reserve_lp2 :1; /* never has lp2 */
char restart_mode; /* default restart mode */
struct smp_operations *smp; /* SMP operations */
+ bool (*smp_init)(void);
void (*fixup)(struct tag *, char **,
struct meminfo *);
void (*reserve)(void);/* reserve mem blocks */
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index 7d2c3c843801..a1c90d7feb0e 100644
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -16,6 +16,7 @@
struct pci_sys_data;
struct pci_ops;
struct pci_bus;
+struct device;
struct hw_pci {
#ifdef CONFIG_PCI_DOMAINS
@@ -68,7 +69,16 @@ struct pci_sys_data {
/*
* Call this with your hw_pci struct to initialise the PCI system.
*/
-void pci_common_init(struct hw_pci *);
+void pci_common_init_dev(struct device *, struct hw_pci *);
+
+/*
+ * Compatibility wrapper for older platforms that do not care about
+ * passing the parent device.
+ */
+static inline void pci_common_init(struct hw_pci *hw)
+{
+ pci_common_init_dev(NULL, hw);
+}
/*
* Setup early fixed I/O mapping.
@@ -96,9 +106,4 @@ extern struct pci_ops via82c505_ops;
extern int via82c505_setup(int nr, struct pci_sys_data *);
extern void via82c505_init(void *sysdata);
-extern struct pci_ops pci_v3_ops;
-extern int pci_v3_setup(int nr, struct pci_sys_data *);
-extern void pci_v3_preinit(void);
-extern void pci_v3_postinit(void);
-
#endif /* __ASM_MACH_PCI_H */
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
index ce0dbe7c1625..c4ae171850f8 100644
--- a/arch/arm/include/asm/psci.h
+++ b/arch/arm/include/asm/psci.h
@@ -32,5 +32,14 @@ struct psci_operations {
};
extern struct psci_operations psci_ops;
+extern struct smp_operations psci_smp_ops;
+
+#ifdef CONFIG_ARM_PSCI
+void psci_init(void);
+bool psci_smp_available(void);
+#else
+static inline void psci_init(void) { }
+static inline bool psci_smp_available(void) { return false; }
+#endif
#endif /* __ASM_ARM_PSCI_H */
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 3d52ee1bfb31..04c99f36ff7f 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -45,6 +45,7 @@ struct pt_regs {
*/
static inline int valid_user_regs(struct pt_regs *regs)
{
+#ifndef CONFIG_CPU_V7M
unsigned long mode = regs->ARM_cpsr & MODE_MASK;
/*
@@ -67,6 +68,9 @@ static inline int valid_user_regs(struct pt_regs *regs)
regs->ARM_cpsr |= USR_MODE;
return 0;
+#else /* ifndef CONFIG_CPU_V7M */
+ return 1;
+#endif
}
static inline long regs_return_value(struct pt_regs *regs)
diff --git a/arch/arm/include/asm/system_info.h b/arch/arm/include/asm/system_info.h
index dfd386d0c022..720ea0320a6d 100644
--- a/arch/arm/include/asm/system_info.h
+++ b/arch/arm/include/asm/system_info.h
@@ -11,6 +11,7 @@
#define CPU_ARCH_ARMv5TEJ 7
#define CPU_ARCH_ARMv6 8
#define CPU_ARCH_ARMv7 9
+#define CPU_ARCH_ARMv7M 10
#ifndef __ASSEMBLY__
diff --git a/arch/arm/include/asm/v7m.h b/arch/arm/include/asm/v7m.h
new file mode 100644
index 000000000000..fa88d09fa3d9
--- /dev/null
+++ b/arch/arm/include/asm/v7m.h
@@ -0,0 +1,44 @@
+/*
+ * Common defines for v7m cpus
+ */
+#define V7M_SCS_ICTR IOMEM(0xe000e004)
+#define V7M_SCS_ICTR_INTLINESNUM_MASK 0x0000000f
+
+#define BASEADDR_V7M_SCB IOMEM(0xe000ed00)
+
+#define V7M_SCB_CPUID 0x00
+
+#define V7M_SCB_ICSR 0x04
+#define V7M_SCB_ICSR_PENDSVSET (1 << 28)
+#define V7M_SCB_ICSR_PENDSVCLR (1 << 27)
+#define V7M_SCB_ICSR_RETTOBASE (1 << 11)
+
+#define V7M_SCB_VTOR 0x08
+
+#define V7M_SCB_SCR 0x10
+#define V7M_SCB_SCR_SLEEPDEEP (1 << 2)
+
+#define V7M_SCB_CCR 0x14
+#define V7M_SCB_CCR_STKALIGN (1 << 9)
+
+#define V7M_SCB_SHPR2 0x1c
+#define V7M_SCB_SHPR3 0x20
+
+#define V7M_SCB_SHCSR 0x24
+#define V7M_SCB_SHCSR_USGFAULTENA (1 << 18)
+#define V7M_SCB_SHCSR_BUSFAULTENA (1 << 17)
+#define V7M_SCB_SHCSR_MEMFAULTENA (1 << 16)
+
+#define V7M_xPSR_FRAMEPTRALIGN 0x00000200
+#define V7M_xPSR_EXCEPTIONNO 0x000001ff
+
+/*
+ * When branching to an address that has bits [31:28] == 0xf an exception return
+ * occurs. Bits [27:5] are reserved (SBOP). If the processor implements the FP
+ * extension Bit [4] defines if the exception frame has space allocated for FP
+ * state information, SBOP otherwise. Bit [3] defines the mode that is returned
+ * to (0 -> handler mode; 1 -> thread mode). Bit [2] defines which sp is used
+ * (0 -> msp; 1 -> psp). Bits [1:0] are fixed to 0b01.
+ */
+#define EXC_RET_STACK_MASK 0x00000004
+#define EXC_RET_THREADMODE_PROCESSSTACK 0xfffffffd
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-20 11:16:46 +0000