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Merge branch 'master' of git://git.denx.de/u-boot-nand-flash
[oweals/u-boot.git]
/
cpu
/
arm920t
/
cpu.c
diff --git
a/cpu/arm920t/cpu.c
b/cpu/arm920t/cpu.c
index 718f253471d40e30935b994b631eececc4e6e523..f93bf57e2b47fe6a79be27372e039d726e0ed5ef 100644
(file)
--- a/
cpu/arm920t/cpu.c
+++ b/
cpu/arm920t/cpu.c
@@
-33,13
+33,17
@@
#include <command.h>
#include <arm920t.h>
#include <command.h>
#include <arm920t.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__(
/* 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"
+ "mrc p15, 0, %0, c1, c0, 0 @ read control reg\n"
: "=r" (value)
:
: "memory");
: "=r" (value)
:
: "memory");
@@
-57,7
+61,7
@@
static void write_p15_c1 (unsigned long value)
printf ("write %08lx to p15/c1\n", value);
#endif
__asm__ __volatile__(
printf ("write %08lx to p15/c1\n", value);
#endif
__asm__ __volatile__(
- "mcr
p15, 0, %0, c1, c0, 0 @ write it back\n"
+ "mcr p15, 0, %0, c1, c0, 0 @ write it back\n"
:
: "r" (value)
: "memory");
:
: "r" (value)
: "memory");
@@
-73,16
+77,17
@@
static void cp_delay (void)
for (i = 0; i < 100; i++);
}
for (i = 0; i < 100; i++);
}
-/* See also ARM
Ref. Man.
*/
+/* See also ARM
920T 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_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_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_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 */
+#define C1_HIGH_VECTORS (1<<13)
/* location of vectors: low/high addresses */
+
int cpu_init (void)
{
int cpu_init (void)
{
@@
-90,8
+95,6
@@
int cpu_init (void)
* setup up stacks if necessary
*/
#ifdef CONFIG_USE_IRQ
* setup up stacks if necessary
*/
#ifdef CONFIG_USE_IRQ
- DECLARE_GLOBAL_DATA_PTR;
-
IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4;
FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4;
FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
#endif
@@
-119,6
+122,7
@@
int cleanup_before_linux (void)
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i));
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i));
+
return (0);
}
return (0);
}
@@
-134,7
+138,7
@@
void icache_enable (void)
{
ulong reg;
{
ulong reg;
- reg = read_p15_c1 ();
+ reg = read_p15_c1 ();
/* get control reg. */
cp_delay ();
write_p15_c1 (reg | C1_IC);
}
cp_delay ();
write_p15_c1 (reg | C1_IC);
}