[U-Boot] [PATCH 1/3] arm: update co-processor 15 access
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Mon Mar 30 18:48:18 CEST 2009
import system.h from linux
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
cpu/arm1136/cpu.c | 50 ++++-----------------------
cpu/arm1176/cpu.c | 58 ++++++-------------------------
cpu/arm720t/cpu.c | 58 ++++++-------------------------
cpu/arm920t/cpu.c | 69 +++++++------------------------------
cpu/arm925t/cpu.c | 57 ++++---------------------------
cpu/arm926ejs/cpu.c | 71 ++++++++-------------------------------
cpu/arm946es/cpu.c | 57 ++++---------------------------
cpu/arm_cortexa8/cpu.c | 48 ++++----------------------
cpu/ixp/cpu.c | 53 ++++++++++++----------------
cpu/lh7a40x/cpu.c | 68 +++++++------------------------------
cpu/pxa/cpu.c | 53 ++++++++++++----------------
cpu/sa1100/cpu.c | 45 +++++++++---------------
include/asm-arm/system.h | 84 ++++++++++++++++++++++++++++++++++++++++++++++
13 files changed, 238 insertions(+), 533 deletions(-)
create mode 100644 include/asm-arm/system.h
diff --git a/cpu/arm1136/cpu.c b/cpu/arm1136/cpu.c
index 0486163..0abe307 100644
--- a/cpu/arm1136/cpu.c
+++ b/cpu/arm1136/cpu.c
@@ -33,36 +33,12 @@
#include <common.h>
#include <command.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -71,18 +47,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-#define C1_WB (1<<3) /* merging write buffer on/off */
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
-
int cpu_init (void)
{
/*
@@ -120,7 +84,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -142,21 +106,21 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 (); /* get control reg. */
+ reg = get_cr (); /* get control reg. */
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return(read_p15_c1 () & C1_IC) != 0;
+ return(get_cr () & CR_I) != 0;
}
diff --git a/cpu/arm1176/cpu.c b/cpu/arm1176/cpu.c
index 1e94f7d..ef78bd9 100644
--- a/cpu/arm1176/cpu.c
+++ b/cpu/arm1176/cpu.c
@@ -34,34 +34,10 @@
#include <common.h>
#include <command.h>
#include <s3c6400.h>
+#include <asm/system.h>
static void cache_flush (void);
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -71,18 +47,6 @@ static void cp_delay (void)
__asm__ __volatile__("nop\n");
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1 << 0) /* mmu off/on */
-#define C1_ALIGN (1 << 1) /* alignment faults off/on */
-#define C1_DC (1 << 2) /* dcache off/on */
-#define C1_WB (1 << 3) /* merging write buffer on/off */
-#define C1_BIG_ENDIAN (1 << 7) /* big endian off/on */
-#define C1_SYS_PROT (1 << 8) /* system protection */
-#define C1_ROM_PROT (1 << 9) /* ROM protection */
-#define C1_IC (1 << 12) /* icache off/on */
-#define C1_HIGH_VECTORS (1 << 13) /* location of vectors: low/high */
-#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
-
int cpu_init (void)
{
return 0;
@@ -135,23 +99,23 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 (); /* get control reg. */
+ reg = get_cr (); /* get control reg. */
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IC) != 0;
+ return (get_cr () & CR_I) != 0;
}
/* It makes no sense to use the dcache if the MMU is not enabled */
@@ -159,23 +123,23 @@ void dcache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_DC);
+ set_cr (reg | CR_C);
}
void dcache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_DC);
+ set_cr (reg & ~CR_C);
}
int dcache_status (void)
{
- return (read_p15_c1 () & C1_DC) != 0;
+ return (get_cr () & CR_C) != 0;
}
/* flush I/D-cache */
diff --git a/cpu/arm720t/cpu.c b/cpu/arm720t/cpu.c
index 8166982..d178e41 100644
--- a/cpu/arm720t/cpu.c
+++ b/cpu/arm720t/cpu.c
@@ -34,6 +34,7 @@
#include <command.h>
#include <clps7111.h>
#include <asm/hardware.h>
+#include <asm/system.h>
int cpu_init (void)
{
@@ -98,33 +99,6 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
*/
#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_NETARM) || defined(CONFIG_ARMADILLO)
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1(void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
- /* printf("p15/c1 is = %08lx\n", value); */
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1(unsigned long value)
-{
- /* printf("write %08lx to p15/c1\n", value); */
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -133,60 +107,50 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_IDC (1<<2) /* icache and/or dcache off/on */
-#define C1_WRITE_BUFFER (1<<3) /* write buffer off/on */
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-
void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_IDC);
+ set_cr (reg | CR_C);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IDC);
+ set_cr (reg & ~CR_C);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IDC) != 0;
+ return (get_cr () & CR_C) != 0;
}
void dcache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_IDC);
+ set_cr (reg | CR_C);
}
void dcache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IDC);
+ set_cr (reg & ~CR_C);
}
int dcache_status (void)
{
- return (read_p15_c1 () & C1_IDC) != 0;
+ return (get_cr () & CR_C) != 0;
}
#elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
/* No specific cache setup for IntegratorAP/CM720T as yet */
diff --git a/cpu/arm920t/cpu.c b/cpu/arm920t/cpu.c
index 1b9cde6..83ee3f3 100644
--- a/cpu/arm920t/cpu.c
+++ b/cpu/arm920t/cpu.c
@@ -32,43 +32,12 @@
#include <common.h>
#include <command.h>
#include <arm920t.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
-
-#ifdef MMU_DEBUG
- printf ("p15/c1 is = %08lx\n", value);
-#endif
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
-#ifdef MMU_DEBUG
- printf ("write %08lx to p15/c1\n", value);
-#endif
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -77,18 +46,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM920T Technical reference Manual */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-
-
int cpu_init (void)
{
/*
@@ -116,7 +73,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -138,23 +95,23 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 (); /* get control reg. */
+ reg = get_cr (); /* get control reg. */
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IC) != 0;
+ return (get_cr () & CR_I) != 0;
}
#ifdef USE_920T_MMU
@@ -163,23 +120,23 @@ void dcache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_DC);
+ set_cr (reg | CR_C);
}
void dcache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- reg &= ~C1_DC;
- write_p15_c1 (reg);
+ reg &= ~CR_C;
+ set_cr (reg);
}
int dcache_status (void)
{
- return (read_p15_c1 () & C1_DC) != 0;
+ return (get_cr () & CR_C) != 0;
}
#endif
diff --git a/cpu/arm925t/cpu.c b/cpu/arm925t/cpu.c
index b9f0931..8d1b562 100644
--- a/cpu/arm925t/cpu.c
+++ b/cpu/arm925t/cpu.c
@@ -32,43 +32,12 @@
#include <common.h>
#include <command.h>
#include <arm925t.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
-
-#ifdef MMU_DEBUG
- printf ("p15/c1 is = %08lx\n", value);
-#endif
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
-#ifdef MMU_DEBUG
- printf ("write %08lx to p15/c1\n", value);
-#endif
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -77,18 +46,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-#define C1_WB (1<<3) /* merging write buffer on/off */
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
-
int cpu_init (void)
{
/*
@@ -116,7 +73,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -137,21 +94,21 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 (); /* get control reg. */
+ reg = get_cr (); /* get control reg. */
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IC) != 0;
+ return (get_cr () & CR_I) != 0;
}
diff --git a/cpu/arm926ejs/cpu.c b/cpu/arm926ejs/cpu.c
index 48a2c0b..d1748c9 100644
--- a/cpu/arm926ejs/cpu.c
+++ b/cpu/arm926ejs/cpu.c
@@ -32,43 +32,12 @@
#include <common.h>
#include <command.h>
#include <arm926ejs.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
-
-#ifdef MMU_DEBUG
- printf ("p15/c1 is = %08lx\n", value);
-#endif
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
-#ifdef MMU_DEBUG
- printf ("write %08lx to p15/c1\n", value);
-#endif
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -77,18 +46,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM926EJ-S Technical Reference Manual */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-
-
int cpu_init (void)
{
/*
@@ -116,7 +73,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -134,52 +91,52 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
return (0);
}
-/* cache_bit must be either C1_IC or C1_DC */
+/* cache_bit must be either CR_I or CR_C */
static void cache_enable(uint32_t cache_bit)
{
uint32_t reg;
- reg = read_p15_c1(); /* get control reg. */
+ reg = get_cr(); /* get control reg. */
cp_delay();
- write_p15_c1(reg | cache_bit);
+ set_cr(reg | cache_bit);
}
-/* cache_bit must be either C1_IC or C1_DC */
+/* cache_bit must be either CR_I or CR_C */
static void cache_disable(uint32_t cache_bit)
{
uint32_t reg;
- reg = read_p15_c1();
+ reg = get_cr();
cp_delay();
- write_p15_c1(reg & ~cache_bit);
+ set_cr(reg & ~cache_bit);
}
void icache_enable(void)
{
- cache_enable(C1_IC);
+ cache_enable(CR_I);
}
void icache_disable(void)
{
- cache_disable(C1_IC);
+ cache_disable(CR_I);
}
int icache_status(void)
{
- return (read_p15_c1() & C1_IC) != 0;
+ return (get_cr() & CR_I) != 0;
}
void dcache_enable(void)
{
- cache_enable(C1_DC);
+ cache_enable(CR_C);
}
void dcache_disable(void)
{
- cache_disable(C1_DC);
+ cache_disable(CR_C);
}
int dcache_status(void)
{
- return (read_p15_c1() & C1_DC) != 0;
+ return (get_cr() & CR_C) != 0;
}
diff --git a/cpu/arm946es/cpu.c b/cpu/arm946es/cpu.c
index 44c589a..25684f2 100644
--- a/cpu/arm946es/cpu.c
+++ b/cpu/arm946es/cpu.c
@@ -32,43 +32,12 @@
#include <common.h>
#include <command.h>
#include <arm946es.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
-
-#ifdef MMU_DEBUG
- printf ("p15/c1 is = %08lx\n", value);
-#endif
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
-#ifdef MMU_DEBUG
- printf ("write %08lx to p15/c1\n", value);
-#endif
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -77,18 +46,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM946E-S Technical Reference Manual */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-
-
int cpu_init (void)
{
/*
@@ -120,7 +77,7 @@ int cleanup_before_linux (void)
*/
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -145,21 +102,21 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 (); /* get control reg. */
+ reg = get_cr (); /* get control reg. */
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IC) != 0;
+ return (get_cr () & CR_I) != 0;
}
diff --git a/cpu/arm_cortexa8/cpu.c b/cpu/arm_cortexa8/cpu.c
index ad2085b..506dbec 100644
--- a/cpu/arm_cortexa8/cpu.c
+++ b/cpu/arm_cortexa8/cpu.c
@@ -34,6 +34,7 @@
#include <common.h>
#include <command.h>
#include <asm/arch/sys_proto.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
@@ -45,27 +46,6 @@ void l2cache_disable(void);
static void cache_flush(void);
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1(void)
-{
- unsigned long value;
-
- __asm__ __volatile__("mrc p15, 0, %0, c1, c0, 0\
- @ read control reg\n":"=r"(value)
- ::"memory");
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1(unsigned long value)
-{
- __asm__ __volatile__("mcr p15, 0, %0, c1, c0, 0\
- @ write it back\n"::"r"(value)
- : "memory");
-
- read_p15_c1();
-}
-
static void cp_delay(void)
{
/* Many OMAP regs need at least 2 nops */
@@ -73,18 +53,6 @@ static void cp_delay(void)
asm("nop");
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-#define C1_WB (1<<3) /* merging write buffer on/off */
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
-
int cpu_init(void)
{
/*
@@ -147,27 +115,27 @@ void icache_enable(void)
{
ulong reg;
- reg = read_p15_c1(); /* get control reg. */
+ reg = get_cr(); /* get control reg. */
cp_delay();
- write_p15_c1(reg | C1_IC);
+ set_cr(reg | CR_I);
}
void icache_disable(void)
{
ulong reg;
- reg = read_p15_c1();
+ reg = get_cr();
cp_delay();
- write_p15_c1(reg & ~C1_IC);
+ set_cr(reg & ~CR_I);
}
void dcache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_DC);
+ set_cr (reg & ~CR_C);
}
void l2cache_enable()
@@ -231,7 +199,7 @@ void l2cache_disable()
int icache_status(void)
{
- return (read_p15_c1() & C1_IC) != 0;
+ return (get_cr() & CR_I) != 0;
}
static void cache_flush(void)
diff --git a/cpu/ixp/cpu.c b/cpu/ixp/cpu.c
index fd545b5..265c820 100644
--- a/cpu/ixp/cpu.c
+++ b/cpu/ixp/cpu.c
@@ -34,6 +34,7 @@
#include <command.h>
#include <netdev.h>
#include <asm/arch/ixp425.h>
+#include <asm/system.h>
ulong loops_per_jiffy;
@@ -125,47 +126,39 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
return (0);
}
-/* taken from blob */
-void icache_enable (void)
+/* cache_bit must be either CR_I or CR_C */
+static void cache_enable(uint32_t cache_bit)
{
- register u32 i;
+ uint32_t reg;
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
-
- /* set i-cache */
- i |= 0x1000;
-
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
+ reg = get_cr(); /* get control reg. */
+ cp_delay();
+ set_cr(reg | cache_bit);
}
-void icache_disable (void)
+/* cache_bit must be either CR_I or CR_C */
+static void cache_disable(uint32_t cache_bit)
{
- register u32 i;
-
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
-
- /* clear i-cache */
- i &= ~0x1000;
+ uint32_t reg;
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
-
- /* flush i-cache */
- asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
+ reg = get_cr();
+ cp_delay();
+ set_cr(reg & ~cache_bit);
}
-int icache_status (void)
+void icache_enable(void)
{
- register u32 i;
+ cache_enable(CR_I);
+}
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
+void icache_disable(void)
+{
+ cache_disable(CR_I);
+}
- /* return bit */
- return (i & 0x1000);
+int icache_status(void)
+{
+ return (get_cr() & CR_I) != 0;
}
/* we will never enable dcache, because we have to setup MMU first */
diff --git a/cpu/lh7a40x/cpu.c b/cpu/lh7a40x/cpu.c
index 8ff3a36..2c6799f 100644
--- a/cpu/lh7a40x/cpu.c
+++ b/cpu/lh7a40x/cpu.c
@@ -32,43 +32,12 @@
#include <common.h>
#include <command.h>
#include <arm920t.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
-/* read co-processor 15, register #1 (control register) */
-static unsigned long read_p15_c1 (void)
-{
- unsigned long value;
-
- __asm__ __volatile__(
- "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
- : "=r" (value)
- :
- : "memory");
-
-#ifdef MMU_DEBUG
- printf ("p15/c1 is = %08lx\n", value);
-#endif
- return value;
-}
-
-/* write to co-processor 15, register #1 (control register) */
-static void write_p15_c1 (unsigned long value)
-{
-#ifdef MMU_DEBUG
- printf ("write %08lx to p15/c1\n", value);
-#endif
- __asm__ __volatile__(
- "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
- :
- : "r" (value)
- : "memory");
-
- read_p15_c1 ();
-}
-
static void cp_delay (void)
{
volatile int i;
@@ -77,17 +46,6 @@ static void cp_delay (void)
for (i = 0; i < 100; i++);
}
-/* See also ARM Ref. Man. */
-#define C1_MMU (1<<0) /* mmu off/on */
-#define C1_ALIGN (1<<1) /* alignment faults off/on */
-#define C1_DC (1<<2) /* dcache off/on */
-#define C1_BIG_ENDIAN (1<<7) /* big endian off/on */
-#define C1_SYS_PROT (1<<8) /* system protection */
-#define C1_ROM_PROT (1<<9) /* ROM protection */
-#define C1_IC (1<<12) /* icache off/on */
-#define C1_HIGH_VECTORS (1<<13) /* location of vectors: low/high addresses */
-#define RESERVED_1 (0xf << 3) /* must be 111b for R/W */
-
int cpu_init (void)
{
/*
@@ -115,7 +73,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
- i &= ~(C1_DC | C1_IC);
+ i &= ~(CR_C | CR_I);
asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
/* flush I/D-cache */
@@ -136,23 +94,23 @@ void icache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_IC);
+ set_cr (reg | CR_I);
}
void icache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
+ set_cr (reg & ~CR_I);
}
int icache_status (void)
{
- return (read_p15_c1 () & C1_IC) != 0;
+ return (get_cr () & CR_I) != 0;
}
#ifdef USE_920T_MMU
@@ -161,23 +119,23 @@ void dcache_enable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- write_p15_c1 (reg | C1_DC);
+ set_cr (reg | CR_C);
}
void dcache_disable (void)
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = get_cr ();
cp_delay ();
- reg &= ~C1_DC;
- write_p15_c1 (reg);
+ reg &= ~CR_C;
+ set_cr (reg);
}
int dcache_status (void)
{
- return (read_p15_c1 () & C1_DC) != 0;
+ return (get_cr () & CR_C) != 0;
}
#endif
diff --git a/cpu/pxa/cpu.c b/cpu/pxa/cpu.c
index e84cb5b..e27b6b9 100644
--- a/cpu/pxa/cpu.c
+++ b/cpu/pxa/cpu.c
@@ -33,6 +33,7 @@
#include <common.h>
#include <command.h>
#include <asm/arch/pxa-regs.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
@@ -86,47 +87,39 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
return (0);
}
-/* taken from blob */
-void icache_enable (void)
+/* cache_bit must be either CR_I or CR_C */
+static void cache_enable(uint32_t cache_bit)
{
- register u32 i;
+ uint32_t reg;
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
-
- /* set i-cache */
- i |= 0x1000;
-
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
+ reg = get_cr(); /* get control reg. */
+ cp_delay();
+ set_cr(reg | cache_bit);
}
-void icache_disable (void)
+/* cache_bit must be either CR_I or CR_C */
+static void cache_disable(uint32_t cache_bit)
{
- register u32 i;
-
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
-
- /* clear i-cache */
- i &= ~0x1000;
+ uint32_t reg;
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
-
- /* flush i-cache */
- asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
+ reg = get_cr();
+ cp_delay();
+ set_cr(reg & ~cache_bit);
}
-int icache_status (void)
+void icache_enable(void)
{
- register u32 i;
+ cache_enable(CR_I);
+}
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
+void icache_disable(void)
+{
+ cache_disable(CR_I);
+}
- /* return bit */
- return (i & 0x1000);
+int icache_status(void)
+{
+ return (get_cr() & CR_I) != 0;
}
/* we will never enable dcache, because we have to setup MMU first */
diff --git a/cpu/sa1100/cpu.c b/cpu/sa1100/cpu.c
index bb4e5a1..d0dfa3d 100644
--- a/cpu/sa1100/cpu.c
+++ b/cpu/sa1100/cpu.c
@@ -32,6 +32,7 @@
#include <common.h>
#include <command.h>
+#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
@@ -85,47 +86,35 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
return (0);
}
-/* taken from blob */
-void icache_enable (void)
+static void cp_delay (void)
{
- register u32 i;
+ volatile int i;
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
+ /* copro seems to need some delay between reading and writing */
+ for (i = 0; i < 100; i++);
+}
- /* set i-cache */
- i |= 0x1000;
+void icache_enable (void)
+{
+ ulong reg;
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
+ reg = get_cr ();
+ cp_delay ();
+ set_cr (reg | CR_C);
}
void icache_disable (void)
{
- register u32 i;
-
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
+ ulong reg;
- /* clear i-cache */
- i &= ~0x1000;
-
- /* write back to control register */
- asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i));
-
- /* flush i-cache */
- asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
+ reg = get_cr ();
+ cp_delay ();
+ set_cr (reg & ~CR_C);
}
int icache_status (void)
{
- register u32 i;
-
- /* read control register */
- asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i));
-
- /* return bit */
- return (i & 0x1000);
+ return (get_cr () & CR_C) != 0;
}
/* we will never enable dcache, because we have to setup MMU first */
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
new file mode 100644
index 0000000..2b28a26
--- /dev/null
+++ b/include/asm-arm/system.h
@@ -0,0 +1,84 @@
+#ifndef __ASM_ARM_SYSTEM_H
+#define __ASM_ARM_SYSTEM_H
+
+#ifdef __KERNEL__
+
+#define CPU_ARCH_UNKNOWN 0
+#define CPU_ARCH_ARMv3 1
+#define CPU_ARCH_ARMv4 2
+#define CPU_ARCH_ARMv4T 3
+#define CPU_ARCH_ARMv5 4
+#define CPU_ARCH_ARMv5T 5
+#define CPU_ARCH_ARMv5TE 6
+#define CPU_ARCH_ARMv5TEJ 7
+#define CPU_ARCH_ARMv6 8
+#define CPU_ARCH_ARMv7 9
+
+/*
+ * CR1 bits (CP#15 CR1)
+ */
+#define CR_M (1 << 0) /* MMU enable */
+#define CR_A (1 << 1) /* Alignment abort enable */
+#define CR_C (1 << 2) /* Dcache enable */
+#define CR_W (1 << 3) /* Write buffer enable */
+#define CR_P (1 << 4) /* 32-bit exception handler */
+#define CR_D (1 << 5) /* 32-bit data address range */
+#define CR_L (1 << 6) /* Implementation defined */
+#define CR_B (1 << 7) /* Big endian */
+#define CR_S (1 << 8) /* System MMU protection */
+#define CR_R (1 << 9) /* ROM MMU protection */
+#define CR_F (1 << 10) /* Implementation defined */
+#define CR_Z (1 << 11) /* Implementation defined */
+#define CR_I (1 << 12) /* Icache enable */
+#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */
+#define CR_RR (1 << 14) /* Round Robin cache replacement */
+#define CR_L4 (1 << 15) /* LDR pc can set T bit */
+#define CR_DT (1 << 16)
+#define CR_IT (1 << 18)
+#define CR_ST (1 << 19)
+#define CR_FI (1 << 21) /* Fast interrupt (lower latency mode) */
+#define CR_U (1 << 22) /* Unaligned access operation */
+#define CR_XP (1 << 23) /* Extended page tables */
+#define CR_VE (1 << 24) /* Vectored interrupts */
+#define CR_EE (1 << 25) /* Exception (Big) Endian */
+#define CR_TRE (1 << 28) /* TEX remap enable */
+#define CR_AFE (1 << 29) /* Access flag enable */
+#define CR_TE (1 << 30) /* Thumb exception enable */
+
+/*
+ * This is used to ensure the compiler did actually allocate the register we
+ * asked it for some inline assembly sequences. Apparently we can't trust
+ * the compiler from one version to another so a bit of paranoia won't hurt.
+ * This string is meant to be concatenated with the inline asm string and
+ * will cause compilation to stop on mismatch.
+ * (for details, see gcc PR 15089)
+ */
+#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t"
+
+#ifndef __ASSEMBLY__
+
+#define isb() __asm__ __volatile__ ("" : : : "memory")
+
+#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
+
+static inline unsigned int get_cr(void)
+{
+ unsigned int val;
+ asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc");
+ return val;
+}
+
+static inline void set_cr(unsigned int val)
+{
+ asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR"
+ : : "r" (val) : "cc");
+ isb();
+}
+
+#endif /* __ASSEMBLY__ */
+
+#define arch_align_stack(x) (x)
+
+#endif /* __KERNEL__ */
+
+#endif
--
1.6.2.1
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