Merge with pollux.denx.org:/home/git/u-boot/.git

1 files changed, 451 insertions, 0 deletions

diff --git a/board/sandburst/common/sb_common.c b/board/sandburst/common/sb_common.c
new file mode 100644
index 0000000..3530416
--- /dev/null
+++ b/board/sandburst/common/sb_common.c
@@ -0,0 +1,451 @@
+/*
+ *  Copyright (C) 2005 Sandburst Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <config.h>
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <spd_sdram.h>
+#include <i2c.h>
+#include "ppc440gx_i2c.h"
+#include "sb_common.h"
+
+long int fixed_sdram (void);
+
+/*************************************************************************
+ *  metrobox_get_master
+ *
+ *  PRI_N - active low signal.	If the GPIO pin is low we are the master
+ *
+ ************************************************************************/
+int sbcommon_get_master(void)
+{
+	ppc440_gpio_regs_t *gpio_regs;
+
+	gpio_regs = (ppc440_gpio_regs_t *)CFG_GPIO_BASE;
+
+	if (gpio_regs->in & SBCOMMON_GPIO_PRI_N) {
+		return 0;
+	}
+	else {
+		return 1;
+	}
+}
+
+/*************************************************************************
+ *  metrobox_secondary_present
+ *
+ *  Figure out if secondary/slave board is present
+ *
+ ************************************************************************/
+int sbcommon_secondary_present(void)
+{
+	ppc440_gpio_regs_t *gpio_regs;
+
+	gpio_regs = (ppc440_gpio_regs_t *)CFG_GPIO_BASE;
+
+	if (gpio_regs->in & SBCOMMON_GPIO_SEC_PRES)
+		return 0;
+	else
+		return 1;
+}
+
+/*************************************************************************
+ *  sbcommon_get_serial_number
+ *
+ *  Retrieve the board serial number via the mac address in eeprom
+ *
+ ************************************************************************/
+unsigned short sbcommon_get_serial_number(void)
+{
+	unsigned char buff[0x100];
+	unsigned short sernum;
+
+	/* Get the board serial number from eeprom */
+	/* Initialize I2C */
+	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+	/* Read 256 bytes in EEPROM */
+	i2c_read (0x50, 0, 1, buff, 0x100);
+
+	memcpy(&sernum, &buff[0xF4], 2);
+	sernum /= 32;
+
+	return (sernum);
+}
+
+/*************************************************************************
+ *  sbcommon_fans
+ *
+ *  Spin up fans 2 & 3 to get some air moving.	OS will take care
+ *  of the rest.  This is mostly a precaution...
+ *
+ *  Assumes i2c bus 1 is ready.
+ *
+ ************************************************************************/
+void sbcommon_fans(void)
+{
+	/*
+	 * Attempt to turn on 2 of the fans...
+	 * Need to go through the bridge
+	 */
+	puts ("FANS:  ");
+
+	/* select fan4 through the bridge */
+	i2c_reg_write1(0x73, /* addr */
+		       0x00, /* reg */
+		       0x08); /* val = bus 4 */
+
+	/* Turn on FAN 4 */
+	i2c_reg_write1(0x2e,
+		       1,
+		       0x80);
+
+	i2c_reg_write1(0x2e,
+		       0,
+		       0x19);
+
+	/* Deselect bus 4 on the bridge */
+	i2c_reg_write1(0x73,
+		       0x00,
+		       0x00);
+
+	/* select fan3 through the bridge */
+	i2c_reg_write1(0x73, /* addr */
+		       0x00, /* reg */
+		       0x04); /* val = bus 3 */
+
+	/* Turn on FAN 3 */
+	i2c_reg_write1(0x2e,
+		       1,
+		       0x80);
+
+	i2c_reg_write1(0x2e,
+		       0,
+		       0x19);
+
+	/* Deselect bus 3 on the bridge */
+	i2c_reg_write1(0x73,
+		       0x00,
+		       0x00);
+
+	/* select fan2 through the bridge */
+	i2c_reg_write1(0x73, /* addr */
+		       0x00, /* reg */
+		       0x02); /* val = bus 4 */
+
+	/* Turn on FAN 2 */
+	i2c_reg_write1(0x2e,
+		       1,
+		       0x80);
+
+	i2c_reg_write1(0x2e,
+		       0,
+		       0x19);
+
+	/* Deselect bus 2 on the bridge */
+	i2c_reg_write1(0x73,
+		       0x00,
+		       0x00);
+
+	/* select fan1 through the bridge */
+	i2c_reg_write1(0x73, /* addr */
+		       0x00, /* reg */
+		       0x01); /* val = bus 0 */
+
+	/* Turn on FAN 1 */
+	i2c_reg_write1(0x2e,
+		       1,
+		       0x80);
+
+	i2c_reg_write1(0x2e,
+		       0,
+		       0x19);
+
+	/* Deselect bus 1 on the bridge */
+	i2c_reg_write1(0x73,
+		       0x00,
+		       0x00);
+
+	puts ("on\n");
+
+	return;
+
+}
+
+/*************************************************************************
+ *  initdram
+ *
+ *  Initialize sdram
+ *
+ ************************************************************************/
+long int initdram (int board_type)
+{
+	long dram_size = 0;
+
+#if defined(CONFIG_SPD_EEPROM)
+	dram_size = spd_sdram (0);
+#else
+	dram_size = fixed_sdram ();
+#endif
+	return dram_size;
+}
+
+
+/*************************************************************************
+ *  testdram
+ *
+ *
+ ************************************************************************/
+#if defined(CFG_DRAM_TEST)
+int testdram (void)
+{
+	uint *pstart = (uint *) CFG_MEMTEST_START;
+	uint *pend = (uint *) CFG_MEMTEST_END;
+	uint *p;
+
+	printf("Testing SDRAM: ");
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("OK\n");
+	return 0;
+}
+#endif
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ *  fixed sdram init -- doesn't use serial presence detect.
+ *
+ *  Assumes:	128 MB, non-ECC, non-registered
+ *		PLB @ 133 MHz
+ *
+ ************************************************************************/
+long int fixed_sdram (void)
+{
+	uint reg;
+
+	/*--------------------------------------------------------------------
+	 * Setup some default
+	 *------------------------------------------------------------------*/
+	mtsdram (mem_uabba, 0x00000000);	/* ubba=0 (default)		*/
+	mtsdram (mem_slio, 0x00000000);		/* rdre=0 wrre=0 rarw=0		*/
+	mtsdram (mem_devopt, 0x00000000);	/* dll=0 ds=0 (normal)		*/
+	mtsdram (mem_wddctr, 0x00000000);	/* wrcp=0 dcd=0			*/
+	mtsdram (mem_clktr, 0x40000000);	/* clkp=1 (90 deg wr) dcdt=0	*/
+
+	/*--------------------------------------------------------------------
+	 * Setup for board-specific specific mem
+	 *------------------------------------------------------------------*/
+	/*
+	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
+	 */
+	mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
+	mtsdram (mem_tr0, 0x410a4012);	/* WR=2	 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
+	/* RA=10 RD=3			    */
+	mtsdram (mem_tr1, 0x8080082f);	/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f   */
+	mtsdram (mem_rtr, 0x08200000);	/* Rate 15.625 ns @ 133 MHz PLB	    */
+	mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM    */
+	udelay (400);			/* Delay 200 usecs (min)	    */
+
+	/*--------------------------------------------------------------------
+	 * Enable the controller, then wait for DCEN to complete
+	 *------------------------------------------------------------------*/
+	mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit	    */
+	for (;;) {
+		mfsdram (mem_mcsts, reg);
+		if (reg & 0x80000000)
+			break;
+	}
+
+	return (128 * 1024 * 1024);	/* 128 MB			    */
+}
+#endif	/* !defined(CONFIG_SPD_EEPROM) */
+
+
+/*************************************************************************
+ *  pci_pre_init
+ *
+ *  This routine is called just prior to registering the hose and gives
+ *  the board the opportunity to check things. Returning a value of zero
+ *  indicates that things are bad & PCI initialization should be aborted.
+ *
+ *	Different boards may wish to customize the pci controller structure
+ *	(add regions, override default access routines, etc) or perform
+ *	certain pre-initialization actions.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
+int pci_pre_init(struct pci_controller * hose )
+{
+	unsigned long strap;
+
+	/*--------------------------------------------------------------------------+
+	 *	The metrobox is always configured as the host & requires the
+	 *	PCI arbiter to be enabled.
+	 *--------------------------------------------------------------------------*/
+	mfsdr(sdr_sdstp1, strap);
+	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
+		printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
+		return 0;
+	}
+
+	return 1;
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+
+/*************************************************************************
+ *  pci_target_init
+ *
+ *	The bootstrap configuration provides default settings for the pci
+ *	inbound map (PIM). But the bootstrap config choices are limited and
+ *	may not be sufficient for a given board.
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller * hose )
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/*--------------------------------------------------------------------------+
+	 * Disable everything
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0SA, 0 ); /* disable */
+	out32r( PCIX0_PIM1SA, 0 ); /* disable */
+	out32r( PCIX0_PIM2SA, 0 ); /* disable */
+	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
+
+	/*--------------------------------------------------------------------------+
+	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
+	 * options to not support sizes such as 128/256 MB.
+	 *--------------------------------------------------------------------------*/
+	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
+	out32r( PCIX0_PIM0LAH, 0 );
+	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
+
+	out32r( PCIX0_BAR0, 0 );
+
+	/*--------------------------------------------------------------------------+
+	 * Program the board's subsystem id/vendor id
+	 *--------------------------------------------------------------------------*/
+	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
+	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
+
+	out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
+}
+#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+
+/*************************************************************************
+ *  is_pci_host
+ *
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI)
+int is_pci_host(struct pci_controller *hose)
+{
+    /* The metrobox is always configured as host. */
+    return(1);
+}
+#endif /* defined(CONFIG_PCI) */
+
+/*************************************************************************
+ *  board_get_enetaddr
+ *
+ *  Get the ethernet MAC address for the management ethernet from the
+ *  strap EEPROM.  Note that is the BASE address for the range of
+ *  external ethernet MACs on the board.  The base + 31 is the actual
+ *  mgmt mac address.
+ *
+ ************************************************************************/
+static int macaddr_idx = 0;
+
+void board_get_enetaddr (uchar * enet)
+{
+	int i;
+	unsigned short tmp;
+	unsigned char buff[0x100], *cp;
+
+	if (0 == macaddr_idx) {
+
+		/* Initialize I2C */
+		i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+		/* Read 256 bytes in EEPROM */
+		i2c_read (0x50, 0, 1, buff, 0x100);
+
+		cp = &buff[0xF0];
+
+		for (i = 0; i < 6; i++,cp++)
+			enet[i] = *cp;
+
+		memcpy(&tmp, &enet[4], 2);
+		tmp += 31;
+		memcpy(&enet[4], &tmp, 2);
+
+		macaddr_idx++;
+	} else {
+		enet[0] = 0x02;
+		enet[1] = 0x00;
+		enet[2] = 0x00;
+		enet[3] = 0x00;
+		enet[4] = 0x00;
+		if (1 == sbcommon_get_master() ) {
+			/* Master/Primary card */
+			enet[5] = 0x01;
+		} else {
+			/* Slave/Secondary card */
+			enet [5] = 0x02;
+		}
+	}
+
+	return;
+}
+
+#ifdef 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 (ctrlc());
+}
+#endif