X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Farm%2Fhw%2Fcrtat91sam7_rom.S;h=9bd9d46c48941d56660442a1fad22e3d451e1000;hb=32345c225137c59bbdc9e3f8c761f29606eb3aaa;hp=0597f4a826c7f5b668e9b1e5a6661bfbb012fd28;hpb=94bc960505bdef2792b8a2eb5d5500549e520e7d;p=bertos.git

diff --git a/bertos/cpu/arm/hw/crtat91sam7_rom.S b/bertos/cpu/arm/hw/crtat91sam7_rom.S
index 0597f4a8..9bd9d46c 100644
--- a/bertos/cpu/arm/hw/crtat91sam7_rom.S
+++ b/bertos/cpu/arm/hw/crtat91sam7_rom.S
@@ -83,18 +83,17 @@
 
 
 #if CPU_ARM_SAM7S_LARGE || CPU_ARM_SAM7X
-	/**
-	* With a 18.420MHz cristal, master clock is:
-	* (((18.420 * PLL_MUL_VAL + 1) / PLL_DIV_VAL) / AT91MCK_PRES) = 48.023MHz
-	*/
+	/*
+	 * With a 18.420MHz cristal, master clock is:
+	 * (((18.420 * PLL_MUL_VAL + 1) / PLL_DIV_VAL) / AT91MCK_PRES) = 48.023MHz
+	 */
 	#define PLL_MUL_VAL  72  /**< Real multiplier value is PLL_MUL_VAL + 1! */
 	#define PLL_DIV_VAL  14
 	#define AT91MCK_PRES PMC_PRES_CLK_2
 
-	/**
-	* Register I/O adresses.
-	* \{
-	*/
+	/*
+	 * Register I/O adresses.
+	 */
 	#define MC_BASE             0xFFFFFF00
 	#define MC_FMR_OFF          0x00000060
 	#define MC_FWS_2R3W         0x00000100
@@ -124,7 +123,7 @@
 	#elif CPU_ARM_SAM7X
 		#define PMC_PIO_CLK_EN ((1 << 2) | (1 << 3))
 	#else
-		#error CPU non supported
+		#error CPU not supported
 	#endif
 
 	#define CKGR_MOR_OFF        0x00000020
@@ -137,11 +136,13 @@
 	#define RSTC_KEY            0xA5000000
 	#define RSTC_URSTEN           (1 << 0)
 
+	#define ARM_MODE_USR              0x10
 	#define ARM_MODE_FIQ              0x11
 	#define ARM_MODE_IRQ              0x12
 	#define ARM_MODE_SVC              0x13
 	#define ARM_MODE_ABORT            0x17
 	#define ARM_MODE_UNDEF            0x1B
+	#define ARM_MODE_SYS              0x1F
 
 #else
 	#error No register I/O definition for selected ARM CPU
@@ -353,7 +354,8 @@ _41:
         /*
          * Initialize user stack pointer.
          */
-        ldr     r13, =__stack_end
+	/* msr     CPSR_c, #ARM_MODE_SYS | 0xC0 */
+	ldr     r13, =__stack_end
 
 
 	/*