Add ARM946E cpu and core module targets; remap memory to 0x00000000
Patch by Peter Pearse, 2 Feb 2005
diff --git a/cpu/arm926ejs/cpu.c b/cpu/arm926ejs/cpu.c
index 2681f99..f57c5a5 100644
--- a/cpu/arm926ejs/cpu.c
+++ b/cpu/arm926ejs/cpu.c
@@ -69,21 +69,21 @@
{
volatile int i;
- /* Many OMAP regs need at least 2 nops */
+ /* copro seems to need some delay between reading and writing */
for (i = 0; i < 100; i++);
}
-/* See also ARM Ref. Man. */
+/* 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_WB (1<<3) /* merging write buffer on/off */
-#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_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)
{
@@ -120,6 +120,7 @@
/* flush I/D-cache */
i = 0;
asm ("mcr p15, 0, %0, c7, c7, 0": :"r" (i));
+
return (0);
}
diff --git a/cpu/arm926ejs/interrupts.c b/cpu/arm926ejs/interrupts.c
index ae8082d..0457bff 100644
--- a/cpu/arm926ejs/interrupts.c
+++ b/cpu/arm926ejs/interrupts.c
@@ -36,8 +36,7 @@
*/
#include <common.h>
-#include <arm925t.h>
-
+#include <arm926ejs.h>
#include <asm/proc-armv/ptrace.h>
#define TIMER_LOAD_VAL 0xffffffff
@@ -46,9 +45,6 @@
#ifdef CONFIG_OMAP
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8))
#endif
-#ifdef CONFIG_INTEGRATOR
-#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
-#endif
#ifdef CONFIG_VERSATILE
#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
#endif
@@ -186,6 +182,12 @@
bad_mode ();
}
+#ifdef CONFIG_INTEGRATOR
+
+ /* Timer functionality supplied by Integrator board (AP or CP) */
+
+#else
+
static ulong timestamp;
static ulong lastdec;
@@ -200,12 +202,7 @@
val = MPUTIM_ST | MPUTIM_AR | MPUTIM_CLOCK_ENABLE | (CFG_PVT << MPUTIM_PTV_BIT);
*((int32_t *) (CFG_TIMERBASE + CNTL_TIMER)) = val;
#endif /* CONFIG_OMAP */
-#ifdef CONFIG_INTEGRATOR
- /* Load timer with initial value */
- *(volatile ulong *)(CFG_TIMERBASE + 0) = TIMER_LOAD_VAL;
- /* Set timer to be enabled, free-running, no interrupts, 256 divider */
- *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
-#endif /* CONFIG_INTEGRATOR */
+
#ifdef CONFIG_VERSATILE
*(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD; /* TimerLoad */
*(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD; /* TimerValue */
@@ -332,3 +329,5 @@
tbclk = CFG_HZ;
return tbclk;
}
+
+#endif /* CONFIG_INTEGRATOR */
diff --git a/cpu/arm926ejs/start.S b/cpu/arm926ejs/start.S
index d62940b..dfa6e7f 100644
--- a/cpu/arm926ejs/start.S
+++ b/cpu/arm926ejs/start.S
@@ -393,6 +393,12 @@
#endif
+# ifdef CONFIG_INTEGRATOR
+
+ /* Satisfied by Integrator routine (AP or CP) */
+
+#else
+
.align 5
.globl reset_cpu
reset_cpu:
@@ -404,6 +410,8 @@
_loop_forever:
b _loop_forever
-
rstctl1:
.word 0xfffece10
+
+#endif /* #ifdef CONFIG_INTEGRATOR */
+