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-rw-r--r--board/sandburst/common/sb_common.c451
1 files changed, 451 insertions, 0 deletions
diff --git a/board/sandburst/common/sb_common.c b/board/sandburst/common/sb_common.c
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+/*
+ * 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
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