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Diffstat (limited to 'cpu/arm1176/cpu.c')
-rw-r--r--cpu/arm1176/cpu.c103
1 files changed, 2 insertions, 101 deletions
diff --git a/cpu/arm1176/cpu.c b/cpu/arm1176/cpu.c
index 1e94f7d..bfa4378 100644
--- a/cpu/arm1176/cpu.c
+++ b/cpu/arm1176/cpu.c
@@ -34,55 +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;
-
- /* Many OMAP regs need at least 2 nops */
- for (i = 0; i < 100; i++)
- __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;
@@ -102,6 +57,7 @@ int cleanup_before_linux (void)
/* turn off I/D-cache */
icache_disable();
dcache_disable();
+ /* flush I/D-cache */
cache_flush();
return 0;
@@ -123,61 +79,6 @@ void reset_cpu (ulong ignored)
/*NOTREACHED*/
}
-int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- disable_interrupts ();
- reset_cpu (0);
- /*NOTREACHED*/
- return 0;
-}
-
-void icache_enable (void)
-{
- ulong reg;
-
- reg = read_p15_c1 (); /* get control reg. */
- cp_delay ();
- write_p15_c1 (reg | C1_IC);
-}
-
-void icache_disable (void)
-{
- ulong reg;
-
- reg = read_p15_c1 ();
- cp_delay ();
- write_p15_c1 (reg & ~C1_IC);
-}
-
-int icache_status (void)
-{
- return (read_p15_c1 () & C1_IC) != 0;
-}
-
-/* It makes no sense to use the dcache if the MMU is not enabled */
-void dcache_enable (void)
-{
- ulong reg;
-
- reg = read_p15_c1 ();
- cp_delay ();
- write_p15_c1 (reg | C1_DC);
-}
-
-void dcache_disable (void)
-{
- ulong reg;
-
- reg = read_p15_c1 ();
- cp_delay ();
- write_p15_c1 (reg & ~C1_DC);
-}
-
-int dcache_status (void)
-{
- return (read_p15_c1 () & C1_DC) != 0;
-}
-
/* flush I/D-cache */
static void cache_flush (void)
{