Coldfire MCF5249 support added

6 files changed, 192 insertions, 6 deletions

diff --git a/cpu/mcf52x2/cpu.c b/cpu/mcf52x2/cpu.c
index b01222279..32a524f7e 100644
--- a/cpu/mcf52x2/cpu.c
+++ b/cpu/mcf52x2/cpu.c
@@ -34,6 +34,10 @@
 
 #endif
 
+#ifdef	CONFIG_M5249
+#include <asm/m5249.h>
+#endif
+
 
 #ifdef	CONFIG_M5272
 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
@@ -121,3 +125,22 @@ int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
 	return 0;
 };
 #endif
+
+#ifdef CONFIG_M5249 /* test-only: todo... */
+int checkcpu (void)
+{
+	char buf[32];
+
+	printf ("CPU:   MOTOROLA Coldfire MCF5249 at %s MHz\n", strmhz(buf, CFG_CLK));
+	return 0;
+}
+
+int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
+	/* enable watchdog, set timeout to 0 and wait */
+	mbar_writeByte(MCFSIM_SYPCR, 0xc0);
+	while (1);
+
+	/* we don't return! */
+	return 0;
+};
+#endif
diff --git a/cpu/mcf52x2/cpu_init.c b/cpu/mcf52x2/cpu_init.c
index 8aff8f1ae..350c431db 100644
--- a/cpu/mcf52x2/cpu_init.c
+++ b/cpu/mcf52x2/cpu_init.c
@@ -34,7 +34,11 @@
 #include <asm/immap_5282.h>
 #endif
 
-#ifdef	CONFIG_M5272
+#ifdef	CONFIG_M5249
+#include <asm/m5249.h>
+#endif
+
+#if defined(CONFIG_M5272)
 /*
  * Breath some life into the CPU...
  *
@@ -118,7 +122,7 @@ int cpu_init_r  (void)
 {
 	return (0);
 }
-#endif /* #ifdef CONFIG_M5272 */
+#endif /* #if defined(CONFIG_M5272) */
 
 
 #ifdef	CONFIG_M5282
@@ -142,3 +146,107 @@ int cpu_init_r  (void)
 	return (0);
 }
 #endif
+
+#if defined(CONFIG_M5249)
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers,
+ * initialize the UPM's
+ */
+void cpu_init_f (void)
+{
+#ifndef CFG_PLL_BYPASS
+	/*
+	 *  Setup the PLL to run at the specified speed
+	 *
+	 */
+	volatile unsigned long cpll = mbar2_readLong(MCFSIM_PLLCR);
+	unsigned long pllcr;
+#ifdef CFG_FAST_CLK
+  	pllcr = 0x925a3100;                       /* ~140MHz clock (PLL bypass = 0) */
+#else
+	pllcr = 0x135a4140;                       /* ~72MHz clock (PLL bypass = 0) */
+#endif
+	cpll = cpll & 0xfffffffe; 		  /* Set PLL bypass mode = 0 (PSTCLK = crystal) */
+	mbar2_writeLong(MCFSIM_PLLCR, cpll); 	  /* Set the PLL to bypass mode (PSTCLK = crystal) */
+	mbar2_writeLong(MCFSIM_PLLCR, pllcr);  	  /* set the clock speed */
+	pllcr ^= 0x00000001; 		      	  /* Set pll bypass to 1 */
+	mbar2_writeLong(MCFSIM_PLLCR, pllcr);  	  /* Start locking (pll bypass = 1) */
+	udelay(0x20);                             /* Wait for a lock ... */
+#endif /* #ifndef CFG_PLL_BYPASS */
+
+	/*
+	 *  NOTE: by setting the GPIO_FUNCTION registers, we ensure that the UART pins
+	 *        (UART0: gpio 30,27, UART1: gpio 31, 28) will be used as UART pins
+	 *        which is their primary function.
+	 *        ~Jeremy
+	 */
+	mbar2_writeLong(MCFSIM_GPIO_FUNC, CFG_GPIO_FUNC);
+	mbar2_writeLong(MCFSIM_GPIO1_FUNC, CFG_GPIO1_FUNC);
+	mbar2_writeLong(MCFSIM_GPIO_EN, CFG_GPIO_EN);
+	mbar2_writeLong(MCFSIM_GPIO1_EN, CFG_GPIO1_EN);
+	mbar2_writeLong(MCFSIM_GPIO_OUT, CFG_GPIO_OUT);
+	mbar2_writeLong(MCFSIM_GPIO1_OUT, CFG_GPIO1_OUT);
+
+	/*
+	 *  dBug Compliance:
+	 *    You can verify these values by using dBug's 'ird'
+	 *    (Internal Register Display) command
+	 *    ~Jeremy
+	 *
+ 	 */
+	mbar_writeByte(MCFSIM_MPARK, 0x30);    /* 5249 Internal Core takes priority over DMA */
+	mbar_writeByte(MCFSIM_SYPCR, 0x00);
+	mbar_writeByte(MCFSIM_SWIVR, 0x0f);
+	mbar_writeByte(MCFSIM_SWSR, 0x00);
+	mbar_writeLong(MCFSIM_IMR, 0xfffffbff);
+	mbar_writeByte(MCFSIM_SWDICR, 0x00);
+	mbar_writeByte(MCFSIM_TIMER1ICR, 0x00);
+	mbar_writeByte(MCFSIM_TIMER2ICR, 0x88);
+	mbar_writeByte(MCFSIM_I2CICR, 0x00);
+	mbar_writeByte(MCFSIM_UART1ICR, 0x00);
+	mbar_writeByte(MCFSIM_UART2ICR, 0x00);
+	mbar_writeByte(MCFSIM_ICR6, 0x00);
+	mbar_writeByte(MCFSIM_ICR7, 0x00);
+	mbar_writeByte(MCFSIM_ICR8, 0x00);
+	mbar_writeByte(MCFSIM_ICR9, 0x00);
+	mbar_writeByte(MCFSIM_QSPIICR, 0x00);
+
+	mbar2_writeLong(MCFSIM_GPIO_INT_EN, 0x00000080);
+	mbar2_writeByte(MCFSIM_INTBASE, 0x40);  /* Base interrupts at 64 */
+	mbar2_writeByte(MCFSIM_SPURVEC, 0x00);
+	mbar2_writeLong(MCFSIM_IDECONFIG1, 0x00000020);  /* Enable a 1 cycle pre-drive cycle on CS1 */
+
+	/* Setup interrupt priorities for gpio7 */
+	/* mbar2_writeLong(MCFSIM_INTLEV5, 0x70000000); */
+
+	/* IDE Config registers */
+	mbar2_writeLong(MCFSIM_IDECONFIG1, 0x00000020);
+	mbar2_writeLong(MCFSIM_IDECONFIG2, 0x00000000);
+
+	/*
+	 *  Setup chip selects...
+	 */
+
+	mbar_writeShort(MCFSIM_CSAR1, CFG_CSAR1);
+	mbar_writeShort(MCFSIM_CSCR1, CFG_CSCR1);
+	mbar_writeLong(MCFSIM_CSMR1, CFG_CSMR1);
+
+	mbar_writeShort(MCFSIM_CSAR0, CFG_CSAR0);
+	mbar_writeShort(MCFSIM_CSCR0, CFG_CSCR0);
+	mbar_writeLong(MCFSIM_CSMR0, CFG_CSMR0);
+
+	/* enable instruction cache now */
+	icache_enable();
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r  (void)
+{
+	return (0);
+}
+#endif /* #if defined(CONFIG_M5249) */
diff --git a/cpu/mcf52x2/interrupts.c b/cpu/mcf52x2/interrupts.c
index 1836f2716..868df3919 100644
--- a/cpu/mcf52x2/interrupts.c
+++ b/cpu/mcf52x2/interrupts.c
@@ -37,6 +37,10 @@
 #include <asm/immap_5282.h>
 #endif
 
+#ifdef	CONFIG_M5249
+#include <asm/m5249.h>
+#endif
+
 
 #define	NR_IRQS		31
 
@@ -142,10 +146,11 @@ void int_handler (struct pt_regs *fp)
 		irq_vecs[vec -
 			 vec_base].handler (irq_vecs[vec - vec_base].arg);
 	} else {
-		printf ("\nBogus External Interrupt Vector %ld\n", vec);
+		printf ("\nBogus External Interrupt Vector %d\n", vec);
 	}
 }
 
+
 #ifdef	CONFIG_M5272
 int interrupt_init (void)
 {
@@ -172,3 +177,12 @@ int interrupt_init (void)
 	return 0;
 }
 #endif
+
+#ifdef	CONFIG_M5249
+int interrupt_init (void)
+{
+	enable_interrupts ();
+
+	return 0;
+}
+#endif
diff --git a/cpu/mcf52x2/serial.c b/cpu/mcf52x2/serial.c
index fbbd14d62..c7309220f 100644
--- a/cpu/mcf52x2/serial.c
+++ b/cpu/mcf52x2/serial.c
@@ -34,11 +34,19 @@
 #include <asm/m5282.h>
 #endif
 
+#ifdef CONFIG_M5249
+#include <asm/m5249.h>
+#endif
+
+#ifdef CONFIG_M5249
+#define DoubleClock(a) ((double)(CFG_CLK/2) / 32.0 / (double)(a))
+#else
 #define DoubleClock(a) ((double)(CFG_CLK) / 32.0 / (double)(a))
+#endif
 
 void rs_serial_setbaudrate(int port,int baudrate)
 {
-#ifdef CONFIG_M5272
+#if defined(CONFIG_M5272) || defined(CONFIG_M5249)
 	volatile unsigned char	*uartp;
 	double clock, fraction;
 
diff --git a/cpu/mcf52x2/speed.c b/cpu/mcf52x2/speed.c
index 8d5c92f37..519c99258 100644
--- a/cpu/mcf52x2/speed.c
+++ b/cpu/mcf52x2/speed.c
@@ -32,6 +32,10 @@ int get_clocks (void)
 	DECLARE_GLOBAL_DATA_PTR;
 
 	gd->cpu_clk = CFG_CLK;
+#ifdef CONFIG_M5249
+	gd->bus_clk = gd->cpu_clk / 2;
+#else
 	gd->bus_clk = gd->cpu_clk;
+#endif
 	return (0);
 }
diff --git a/cpu/mcf52x2/start.S b/cpu/mcf52x2/start.S
index cf1b97d84..b4926e237 100644
--- a/cpu/mcf52x2/start.S
+++ b/cpu/mcf52x2/start.S
@@ -110,13 +110,19 @@ _start:
 	movec	%d0, %VBR
 #endif
 
-#ifdef CONFIG_M5272
+#if defined(CONFIG_M5272) || defined(CONFIG_M5249)
 	move.l	#(CFG_MBAR + 1), %d0		/* set MBAR address + valid flag */
 	move.c	%d0, %MBAR
 
+	/*** The 5249 has MBAR2 as well ***/
+#ifdef CFG_MBAR2
+	move.l	#(CFG_MBAR2 + 1), %d0	        /* Get MBAR2 address */
+	movec	%d0, #0xc0e		        /* Set MBAR2 */
+#endif
+
 	move.l	#(CFG_INIT_RAM_ADDR + 1), %d0
 	movec	%d0, %RAMBAR0
-#endif
+#endif /* #if defined(CONFIG_M5272) || defined(CONFIG_M5249) */
 
 #ifdef CONFIG_M5282
 	/* Initialize IPSBAR */
@@ -287,6 +293,28 @@ icache_enable:
 	rts
 #endif
 
+#ifdef CONFIG_M5249
+	.globl	icache_enable
+icache_enable:
+	/*
+	 *  Note: The 5249 Documentation doesn't give a bit position for CINV!
+	 *  From the 5272 and the 5307 documentation, I have deduced that it is
+	 *  probably CACR[24]. Should someone say something to Motorola?
+	 *  	~Jeremy
+	 */
+	move.l	#0x01000000, %d0		/* Invalidate whole cache */
+	move.c	%d0,%CACR
+	move.l	#0xff00c000, %d0		/* Set FLASH cachable: always match (SM=0b10) */
+	move.c	%d0, %ACR0
+	move.l	#0x0000c000, %d0		/* Set SDRAM cachable: always match (SM=0b10) */
+	move.c	%d0, %ACR1
+	move.l	#0x90000200, %d0		/* Set cache enable cmd */
+	move.c	%d0,%CACR
+	moveq	#1, %d0
+	move.l	%d0, icache_state
+	rts
+#endif
+
 	.globl	icache_disable
 icache_disable:
 	move.l	#0x00000100, %d0		/* Setup cache mask */
@@ -307,6 +335,7 @@ icache_status:
 icache_state:
 	.long	1
 
+
 /*------------------------------------------------------------------------------*/
 
 	.globl	version_string