ppc4xx: Netstal HCU4 board: added various fixes and POST

- Moved some common code to netstal/common/nm_bsp.c.
- sdram initialisation goes go netstal/common/fixed_sdram.c.
- Added support for POST.
- Stylistic cleanups (multi-line comments/ enforce 80 colomn width)

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>

2 files changed, 77 insertions, 267 deletions

diff --git a/board/netstal/hcu4/Makefile b/board/netstal/hcu4/Makefile
index af90821..c0d719f 100644
--- a/board/netstal/hcu4/Makefile
+++ b/board/netstal/hcu4/Makefile
@@ -22,10 +22,12 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
+vpath fixed_sdram.c ../common
 vpath hcu_flash.c ../common
+vpath nm_bsp.c ../common
 
 # NOBJS : Netstal common objects
-NOBJS	= hcu_flash.o
+NOBJS	= fixed_sdram.o hcu_flash.o nm_bsp.o
 COBJS	= $(BOARD).o
 SOBJS	=
 
diff --git a/board/netstal/hcu4/hcu4.c b/board/netstal/hcu4/hcu4.c
index 48a3f13..714b98e 100644
--- a/board/netstal/hcu4/hcu4.c
+++ b/board/netstal/hcu4/hcu4.c
@@ -23,32 +23,16 @@
 #include  <asm/processor.h>
 #include  <asm/io.h>
 #include  <asm-ppc/u-boot.h>
-#include  "../common/nm_bsp.c"
+#include  "../common/nm.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
 #define HCU_MACH_VERSIONS_REGISTER	(0x7C000000 + 0xF00000)
+#define SYS_SLOT_ADDRESS		(0x7C000000 + 0x400000)
+#define HCU3_DIGITAL_IO_REGISTER	(0x7C000000 + 0x500000)
+#define HCU_SW_INSTALL_REQUESTED	0x10
 
-#define SDRAM_LEN 32*1024*1024 /* 32 MB -RAM */
-
-#define DO_UGLY_SDRAM_WORKAROUND
-
-enum {
-	/* HW_GENERATION_HCU wird nicht mehr unterstuetzt */
-	HW_GENERATION_HCU2  = 0x10,
-	HW_GENERATION_HCU3  = 0x10,
-	HW_GENERATION_HCU4  = 0x20,
-	HW_GENERATION_MCU   = 0x08,
-	HW_GENERATION_MCU20 = 0x0a,
-	HW_GENERATION_MCU25 = 0x09,
-};
-
-void hcu_led_set(u32 value);
-long int spd_sdram(int(read_spd)(uint addr));
-
-#ifdef CONFIG_SPD_EEPROM
-#define DEBUG
-#endif
+#undef DEBUG
 
 #if defined(DEBUG)
 void show_sdram_registers(void);
@@ -69,6 +53,7 @@ void show_sdram_registers(void);
 /* Attention: If you want 1 microsecs times from the external oscillator
  * use  0x00804051. But this causes problems with u-boot and linux!
  */
+#define CPC0_CR0_VALUE	0x0030103c
 #define CPC0_CR1_VALUE	0x00004051
 #define CPC0_ECR	0xaa	/* Edge condition register */
 #define EBC0_CFG	0x23	/* External Peripheral Control Register */
@@ -77,18 +62,18 @@ void show_sdram_registers(void);
 
 int board_early_init_f (void)
 {
-	/*-------------------------------------------------------------------+
-	| Interrupt controller setup for the HCU4 board.
-	| Note: IRQ 0-15  405GP internally generated; high; level sensitive
-	|       IRQ 16    405GP internally generated; low; level sensitive
-	|       IRQ 17-24 RESERVED/UNUSED
-	|       IRQ 31 (EXT IRQ 6) (unused)
-	+-------------------------------------------------------------------*/
+	/*
+	 * Interrupt controller setup for the HCU4 board.
+	 * Note: IRQ 0-15  405GP internally generated; high; level sensitive
+	 *       IRQ 16    405GP internally generated; low; level sensitive
+	 *      IRQ 17-24 RESERVED/UNUSED
+	 *      IRQ 31 (EXT IRQ 6) (unused)
+	 */
 	mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
 	mtdcr (uicer, 0x00000000); /* disable all ints */
 	mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
-	mtdcr (uicpr, 0xFFFFFF87); /* set int polarities */
-	mtdcr (uictr, 0x10000000); /* set int trigger levels */
+	mtdcr (uicpr, 0xFFFFE000); /* set int polarities */
+	mtdcr (uictr, 0x00000000); /* set int trigger levels */
 	mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
 
 	mtdcr(CPC0_CR1,  CPC0_CR1_VALUE);
@@ -105,47 +90,44 @@ int board_pre_init (void)
 }
 #endif
 
+int sys_install_requested(void)
+{
+	u16 *ioValuePtr = (u16 *)HCU3_DIGITAL_IO_REGISTER;
+	return (in_be16(ioValuePtr) & HCU_SW_INSTALL_REQUESTED) != 0;
+}
+
 int checkboard (void)
 {
-	unsigned int j;
-	u16 *boardVersReg = (u16 *) HCU_MACH_VERSIONS_REGISTER;
-	u16 generation = *boardVersReg & 0xf0;
-	u16 index      = *boardVersReg & 0x0f;
+	u16 *boardVersReg = (u16 *)HCU_MACH_VERSIONS_REGISTER;
+	u16 generation = in_be16(boardVersReg) & 0xf0;
+	u16 index      = in_be16(boardVersReg) & 0x0f;
 
+	/* Cannot be done, in board_early_init */
+	mtdcr(CPC0_CR0,  CPC0_CR0_VALUE);
 	/* Force /RTS to active. The board it not wired quite
-	   correctly to use cts/rtc flow control, so just force the
-	   /RST active and forget about it. */
+	 *  correctly to use cts/rtc flow control, so just force the
+	 *  /RST active and forget about it.
+	 */
 	writeb (readb (0xef600404) | 0x03, 0xef600404);
-	printf ("\nNetstal Maschinen AG ");
-	if (generation == HW_GENERATION_HCU3)
-		printf ("HCU3: index %d\n\n", index);
-	else if (generation == HW_GENERATION_HCU4)
-		printf ("HCU4: index %d\n\n", index);
-	hcu_led_set(0);
-	for (j = 0; j < 7; j++) {
-		hcu_led_set(1 << j);
-		udelay(50 * 1000);
-	}
+	nm_show_print(generation, index, 0);
 
 	return 0;
 }
 
 u32 hcu_led_get(void)
 {
-	return (~((*(u32 *)GPIO0_OR)) >> 23) & 0xff;
+	return (~(in_be32((u32 *)GPIO0_OR)) >> 23) & 0xff;
 }
 
-/*---------------------------------------------------------------------------+
+/*
  * hcu_led_set  value to be placed into the LEDs (max 6 bit)
- *---------------------------------------------------------------------------*/
+ */
 void hcu_led_set(u32 value)
 {
 	u32   tmp = ~value;
-	u32   *ledReg;
 
 	tmp = (tmp << 23) | 0x7FFFFF;
-	ledReg = (u32 *)GPIO0_OR;
-	*ledReg = tmp;
+	out_be32((u32 *)GPIO0_OR, tmp);
 }
 
 /*
@@ -157,246 +139,72 @@ void sdram_init(void)
 	return;
 }
 
-#if defined(DEBUG)
-void show_sdram_registers(void)
-{
-	u32 value;
-
-	printf ("SDRAM Controller Registers --\n");
-	mfsdram(mem_mcopt1, value);
-	printf ("    SDRAM0_CFG   : 0x%08x\n", value);
-	mfsdram(mem_status, value);
-	printf ("    SDRAM0_STATUS: 0x%08x\n", value);
-	mfsdram(mem_mb0cf, value);
-	printf ("    SDRAM0_B0CR  : 0x%08x\n", value);
-	mfsdram(mem_mb1cf, value);
-	printf ("    SDRAM0_B1CR  : 0x%08x\n", value);
-	mfsdram(mem_sdtr1, value);
-	printf ("    SDRAM0_TR    : 0x%08x\n", value);
-	mfsdram(mem_rtr, value);
-	printf ("    SDRAM0_RTR   : 0x%08x\n", value);
-}
-#endif
-
 /*
- * this is even after checkboard. It returns the size of the SDRAM
- * that we have installed. This function is called by board_init_f
- * in lib_ppc/board.c to initialize the memory and return what I
- * found. These are default value, which will be overridden later.
+ * hcu_get_slot
  */
-
-long int fixed_hcu4_sdram (int board_type)
+u32 hcu_get_slot(void)
 {
-#ifdef DEBUG
-	printf (__FUNCTION__);
-#endif
-	/* disable memory controller */
-	mtdcr (memcfga, mem_mcopt1);
-	mtdcr (memcfgd, 0x00000000);
-
-	udelay (500);
-
-	/* Clear SDRAM0_BESR0 (Bus Error Syndrome Register) */
-	mtdcr (memcfga, mem_besra);
-	mtdcr (memcfgd, 0xffffffff);
-
-	/* Clear SDRAM0_BESR1 (Bus Error Syndrome Register) */
-	mtdcr (memcfga, mem_besrb);
-	mtdcr (memcfgd, 0xffffffff);
-
-	/* Clear SDRAM0_ECCCFG (disable ECC) */
-	mtdcr (memcfga, mem_ecccf);
-	mtdcr (memcfgd, 0x00000000);
-
-	/* Clear SDRAM0_ECCESR (ECC Error Syndrome Register) */
-	mtdcr (memcfga, mem_eccerr);
-	mtdcr (memcfgd, 0xffffffff);
-
-	/* Timing register: CASL=2, PTA=2, CTP=2, LDF=1, RFTA=5, RCD=2
-	 * TODO ngngng
-	 */
-	mtdcr (memcfga, mem_sdtr1);
-	mtdcr (memcfgd, 0x008a4015);
-
-	/* Memory Bank 0 Config == BA=0x00000000, SZ=64M, AM=3, BE=1
-	 * TODO ngngng
-	 */
-	mtdcr (memcfga, mem_mb0cf);
-	mtdcr (memcfgd, 0x00062001);
-
-	/* refresh timer = 0x400  */
-	mtdcr (memcfga, mem_rtr);
-	mtdcr (memcfgd, 0x04000000);
-
-	/* Power management idle timer set to the default. */
-	mtdcr (memcfga, mem_pmit);
-	mtdcr (memcfgd, 0x07c00000);
-
-	udelay (500);
-
-	/* Enable banks (DCE=1, BPRF=1, ECCDD=1, EMDUL=1) TODO */
-	mtdcr (memcfga, mem_mcopt1);
-	mtdcr (memcfgd, 0x90800000);
-
-#ifdef DEBUG
-	printf ("%s: done\n", __FUNCTION__);
-#endif
-	return SDRAM_LEN;
+	u16 *slot = (u16 *)SYS_SLOT_ADDRESS;
+	return in_be16(slot) & 0x7f;
 }
 
-/*---------------------------------------------------------------------------+
- * hcu_serial_number
- *---------------------------------------------------------------------------*/
-static u32 hcu_serial_number(void)
+/*
+ * get_serial_number
+ */
+u32 get_serial_number(void)
 {
 	u32 *serial = (u32 *)CFG_FLASH_BASE;
 
-	if (*serial == 0xffffffff)
-		return get_ticks();
+	if (in_be32(serial) == 0xffffffff)
+		return 0;
 
-	return *serial;
+	return in_be32(serial);
 }
 
 
-/*---------------------------------------------------------------------------+
+/*
  * misc_init_r.
- *---------------------------------------------------------------------------*/
+ */
 
 int misc_init_r(void)
 {
-	char *s = getenv("ethaddr");
-	char *e;
-	int i;
-	u32 serial = hcu_serial_number();
-
-	for (i = 0; i < 6; ++i) {
-		gd->bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
-		if (s)
-			s = (*e) ? e + 1 : e;
-	}
-
-	if (gd->bd->bi_enetaddr[3] == 0 &&
-	    gd->bd->bi_enetaddr[4] == 0 &&
-	    gd->bd->bi_enetaddr[5] == 0) {
-		char ethaddr[22];
-		/* [0..3] Must be in sync with CONFIG_ETHADDR */
-		gd->bd->bi_enetaddr[0] = 0x00;
-		gd->bd->bi_enetaddr[1] = 0x60;
-		gd->bd->bi_enetaddr[2] = 0x13;
-		gd->bd->bi_enetaddr[3] = (serial          >> 16) & 0xff;
-		gd->bd->bi_enetaddr[4] = (serial          >>  8) & 0xff;
-		gd->bd->bi_enetaddr[5] = (serial          >>  0) & 0xff;
-		sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X\0",
-			 gd->bd->bi_enetaddr[0], gd->bd->bi_enetaddr[1],
-			 gd->bd->bi_enetaddr[2], gd->bd->bi_enetaddr[3],
-			 gd->bd->bi_enetaddr[4], gd->bd->bi_enetaddr[5]) ;
-		printf("%s: Setting eth %s serial 0x%x\n",  __FUNCTION__,
-		       ethaddr, serial);
-		setenv ("ethaddr", ethaddr);
-	}
+	common_misc_init_r();
+	set_params_for_sw_install( sys_install_requested(), "hcu4" );
 	return 0;
 }
 
-#ifdef  DO_UGLY_SDRAM_WORKAROUND
-#include "i2c.h"
-
-void set_spd_default_value(unsigned int spd_addr,uchar def_val)
-{
-	uchar value;
-	int res = i2c_read(SPD_EEPROM_ADDRESS, spd_addr, 1, &value, 1) ;
-
-	if (res == 0 && value == 0xff) {
-		res = i2c_write(SPD_EEPROM_ADDRESS,
-				spd_addr, 1, &def_val, 1) ;
-#ifdef DEBUG
-		printf("%s: Setting spd offset %3d to %3d res %d\n",
-		       __FUNCTION__, spd_addr,  def_val, res);
-#endif
-	}
-}
-#endif
-
 long int initdram(int board_type)
 {
 	long dram_size = 0;
-
-#if !defined(CONFIG_SPD_EEPROM)
-	dram_size = fixed_hcu4_sdram();
-#else
-#ifdef  DO_UGLY_SDRAM_WORKAROUND
-	/* Workaround if you have no working I2C-EEPROM-SPD-configuration */
-	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
-	set_spd_default_value(2,  4); /* SDRAM Type */
-	set_spd_default_value(7,  0); /* module width, high byte */
-	set_spd_default_value(12, 1); /* Refresh or 0x81 */
-
-	/* Only correct for HCU3 with 32 MB RAM*/
-	/* Number of bytes used by module manufacturer */
-	set_spd_default_value( 0, 128);
-	set_spd_default_value( 1, 11 ); /* Total SPD memory size */
-	set_spd_default_value( 2, 4  ); /* Memory type */
-	set_spd_default_value( 3, 12 ); /* Number of row address bits */
-	set_spd_default_value( 4, 9  ); /* Number of column address bits */
-	set_spd_default_value( 5, 1  ); /* Number of module rows */
-	set_spd_default_value( 6, 32 ); /* Module data width, LSB */
-	set_spd_default_value( 7, 0  ); /* Module data width, MSB */
-	set_spd_default_value( 8, 1  ); /* Module interface signal levels */
-	/* SDRAM cycle time for highest CL (Tclk) */
-	set_spd_default_value( 9, 112);
-	/* SDRAM access time from clock for highest CL (Tac) */
-	set_spd_default_value(10, 84 );
-	set_spd_default_value(11, 2  ); /* Module configuration type */
-	set_spd_default_value(12, 128); /* Refresh rate/type */
-	set_spd_default_value(13, 16 ); /* Primary SDRAM width */
-	set_spd_default_value(14, 8  ); /* Error Checking SDRAM width */
-	/* SDRAM device attributes, min clock delay for back to back */
-	/*random column addresses (Tccd) */
-	set_spd_default_value(15, 1  );
-	/* SDRAM device attributes, burst lengths supported */
-	set_spd_default_value(16, 143);
-	/* SDRAM device attributes, number of banks on SDRAM device */
-	set_spd_default_value(17, 4  );
-	/* SDRAM device attributes, CAS latency */
-	set_spd_default_value(18, 6  );
-	/* SDRAM device attributes, CS latency */
-	set_spd_default_value(19, 1  );
-	/* SDRAM device attributes, WE latency */
-	set_spd_default_value(20, 1  );
-	set_spd_default_value(21, 0  ); /* SDRAM module attributes */
-	/* SDRAM device attributes, general */
-	set_spd_default_value(22, 14 );
-	/* SDRAM cycle time for 2nd highest CL (Tclk) */
-	set_spd_default_value(23, 117);
-	/* SDRAM access time from clock for2nd highest CL (Tac) */
-	set_spd_default_value(24, 84 );
-	/* SDRAM cycle time for 3rd highest CL (Tclk) */
-	set_spd_default_value(25, 0  );
-	/* SDRAM access time from clock for3rd highest CL (Tac) */
-	set_spd_default_value(26, 0  );
-	set_spd_default_value(27, 15 ); /* Minimum row precharge time (Trp) */
-	/* Minimum row active to row active delay (Trrd) */
-	set_spd_default_value(28, 14 );
-	set_spd_default_value(29, 15 ); /* Minimum CAS to RAS delay (Trcd) */
-	set_spd_default_value(30, 37 ); /* Minimum RAS pulse width (Tras) */
-	set_spd_default_value(31, 8  ); /* Module bank density */
-	/* Command and Address signal input setup time */
-	set_spd_default_value(32, 21 );
-	/* Command and Address signal input hold time */
-	set_spd_default_value(33, 8  );
-	set_spd_default_value(34, 21 ); /* Data signal input setup time */
-	set_spd_default_value(35, 8  ); /* Data signal input hold time */
-#endif  /* DO_UGLY_SDRAM_WORKAROUND */
-	dram_size = spd_sdram(0);
-#endif
+	u16 *boardVersReg = (u16 *) HCU_MACH_VERSIONS_REGISTER;
+	u16 generation = in_be16(boardVersReg) & 0xf0;
+	if (generation == HW_GENERATION_HCU3)
+		dram_size = 32*1024*1024;
+	else dram_size = 64*1024*1024;
+	fixed_hcu4_sdram(dram_size);
 
 #ifdef DEBUG
 	show_sdram_registers();
 #endif
 
-#if defined(CFG_DRAM_TEST)
-	bcu4_testdram(dram_size);
-	printf("%s %d MB of SDRAM\n", __FUNCTION__, dram_size/(1024*1024));
-#endif
-
 	return dram_size;
 }
+
+#if defined(CONFIG_POST)
+/*
+ * Returns 1 if keys pressed to start the power-on long-running tests
+ * Called from board_init_f().
+ */
+int post_hotkeys_pressed(void)
+{
+	return 0;	/* No hotkeys supported */
+}
+#endif /* CONFIG_POST */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */