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authorwdenk <wdenk>2002-08-26 21:58:50 +0000
committerwdenk <wdenk>2002-08-26 21:58:50 +0000
commit16f217049a70da97bc61eff7a95b4b6313850909 (patch)
tree4c9c0b416828b4215b10d152aac432b449a11f05 /board/ivm
parent354bc6feac2cf549c51c2f36e2a374438af4e9c1 (diff)
Initial revision
Diffstat (limited to 'board/ivm')
-rw-r--r--board/ivm/ivm.c382
1 files changed, 382 insertions, 0 deletions
diff --git a/board/ivm/ivm.c b/board/ivm/ivm.c
new file mode 100644
index 00000000000..117dbe6a8d8
--- /dev/null
+++ b/board/ivm/ivm.c
@@ -0,0 +1,382 @@
+/*
+ * (C) Copyright 2000, 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Ulrich Lutz, Speech Design GmbH, ulutz@datalab.de.
+ *
+ * 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 <common.h>
+#include <mpc8xx.h>
+#include <commproc.h>
+
+#ifdef CONFIG_STATUS_LED
+# include <status_led.h>
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define _NOT_USED_ 0xFFFFFFFF
+
+/*
+ * 50 MHz SHARC access using UPM A
+ */
+const uint sharc_table[] =
+{
+ /*
+ * Single Read. (Offset 0 in UPM RAM)
+ */
+ 0x0FF3FC04, 0x0FF3EC00, 0x7FFFEC04, 0xFFFFEC04,
+ 0xFFFFEC05, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Read. (Offset 8 in UPM RAM)
+ */
+ /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Single Write. (Offset 18 in UPM RAM)
+ */
+ 0x0FAFFC04, 0x0FAFEC00, 0x7FFFEC04, 0xFFFFEC04,
+ 0xFFFFEC05, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Write. (Offset 20 in UPM RAM)
+ */
+ /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Refresh (Offset 30 in UPM RAM)
+ */
+ /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Exception. (Offset 3c in UPM RAM)
+ */
+ 0x7FFFFC07, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+
+/*
+ * 50 MHz SDRAM access using UPM B
+ */
+const uint sdram_table[] =
+{
+ /*
+ * Single Read. (Offset 0 in UPM RAM)
+ */
+ 0x0E26FC04, 0x11ADFC04, 0xEFBBBC00, 0x1FF77C45, /* last */
+ _NOT_USED_,
+ /*
+ * SDRAM Initialization (offset 5 in UPM RAM)
+ *
+ * This is no UPM entry point. The following definition uses
+ * the remaining space to establish an initialization
+ * sequence, which is executed by a RUN command.
+ *
+ */
+ 0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* last */
+ /*
+ * Burst Read. (Offset 8 in UPM RAM)
+ */
+ 0x0E26FC04, 0x10ADFC04, 0xF0AFFC00, 0xF0AFFC00,
+ 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C45, /* last */
+ _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Single Write. (Offset 18 in UPM RAM)
+ */
+ 0x1F27FC04, 0xEEAEBC04, 0x01B93C00, 0x1FF77C45, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Burst Write. (Offset 20 in UPM RAM)
+ */
+ 0x0E26BC00, 0x10AD7C00, 0xF0AFFC00, 0xF0AFFC00,
+ 0xE1BBBC04, 0x1FF77C45, /* last */
+ _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Refresh (Offset 30 in UPM RAM)
+ */
+ 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC84,
+ 0xFFFFFC05, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ /*
+ * Exception. (Offset 3c in UPM RAM)
+ */
+ 0x7FFFFC07, /* last */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ */
+
+int checkboard (void)
+{
+#ifdef CONFIG_IVMS8
+ puts ("Board: IVMS8\n");
+#endif
+#ifdef CONFIG_IVML24
+ puts ("Board: IVM-L8/24\n");
+#endif
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int
+initdram (int board_type)
+{
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immr->im_memctl;
+ long int size_b0;
+
+ /* enable SDRAM clock ("switch on" SDRAM) */
+ immr->im_cpm.cp_pbpar &= ~(CFG_PB_SDRAM_CLKE); /* GPIO */
+ immr->im_cpm.cp_pbodr &= ~(CFG_PB_SDRAM_CLKE); /* active output */
+ immr->im_cpm.cp_pbdir |= CFG_PB_SDRAM_CLKE ; /* output */
+ immr->im_cpm.cp_pbdat |= CFG_PB_SDRAM_CLKE ; /* assert SDRAM CLKE */
+ udelay(1);
+
+ /*
+ * Map controller bank 1 for ELIC SACCO
+ */
+ memctl->memc_or1 = CFG_OR1;
+ memctl->memc_br1 = CFG_BR1;
+
+ /*
+ * Map controller bank 2 for ELIC EPIC
+ */
+ memctl->memc_or2 = CFG_OR2;
+ memctl->memc_br2 = CFG_BR2;
+
+ /*
+ * Configure UPMA for SHARC
+ */
+ upmconfig(UPMA, (uint *)sharc_table, sizeof(sharc_table)/sizeof(uint));
+
+#if defined(CONFIG_IVML24)
+ /*
+ * Map controller bank 4 for HDLC Address space
+ */
+ memctl->memc_or4 = CFG_OR4;
+ memctl->memc_br4 = CFG_BR4;
+#endif
+
+ /*
+ * Map controller bank 5 for SHARC
+ */
+ memctl->memc_or5 = CFG_OR5;
+ memctl->memc_br5 = CFG_BR5;
+
+ memctl->memc_mamr = 0x00001000;
+
+ /*
+ * Configure UPMB for SDRAM
+ */
+ upmconfig(UPMB, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+ memctl->memc_mptpr = CFG_MPTPR_1BK_8K;
+
+ memctl->memc_mar = 0x00000088;
+
+ /*
+ * Map controller bank 3 to the SDRAM bank at preliminary address.
+ */
+ memctl->memc_or3 = CFG_OR3_PRELIM;
+ memctl->memc_br3 = CFG_BR3_PRELIM;
+
+ memctl->memc_mbmr = CFG_MBMR_8COL; /* refresh not enabled yet */
+
+ udelay(200);
+ memctl->memc_mcr = 0x80806105; /* precharge */
+ udelay(1);
+ memctl->memc_mcr = 0x80806106; /* load mode register */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+ udelay(1);
+ memctl->memc_mcr = 0x80806130; /* autorefresh */
+
+ memctl->memc_mbmr |= MAMR_PTBE; /* refresh enabled */
+
+ /*
+ * Check Bank 0 Memory Size for re-configuration
+ */
+ size_b0 = dram_size (CFG_MBMR_8COL, (ulong *)SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE);
+
+ memctl->memc_mbmr = CFG_MBMR_8COL | MAMR_PTBE;
+
+ return (size_b0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+
+static long int dram_size (long int mamr_value, long int *base, long int maxsize)
+{
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immr->im_memctl;
+ volatile long int *addr;
+ ulong cnt, val;
+ ulong save[32]; /* to make test non-destructive */
+ unsigned char i = 0;
+
+ memctl->memc_mbmr = mamr_value;
+
+ for (cnt = maxsize/sizeof(long); cnt > 0; cnt >>= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ save[i++] = *addr;
+ *addr = ~cnt;
+ }
+
+ /* write 0 to base address */
+ addr = base;
+ save[i] = *addr;
+ *addr = 0;
+
+ /* check at base address */
+ if ((val = *addr) != 0) {
+ *addr = save[i];
+ return (0);
+ }
+
+ for (cnt = 1; cnt <= maxsize/sizeof(long); cnt <<= 1) {
+ addr = base + cnt; /* pointer arith! */
+
+ val = *addr;
+ *addr = save[--i];
+
+ if (val != (~cnt)) {
+ return (cnt * sizeof(long));
+ }
+ }
+ return (maxsize);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void reset_phy(void)
+{
+ immap_t *immr = (immap_t *)CFG_IMMR;
+
+ /* De-assert Ethernet Powerdown */
+ immr->im_cpm.cp_pbpar &= ~(CFG_PB_ETH_POWERDOWN); /* GPIO */
+ immr->im_cpm.cp_pbodr &= ~(CFG_PB_ETH_POWERDOWN); /* active output */
+ immr->im_cpm.cp_pbdir |= CFG_PB_ETH_POWERDOWN ; /* output */
+ immr->im_cpm.cp_pbdat &= ~(CFG_PB_ETH_POWERDOWN); /* Enable PHY power */
+ udelay(1000);
+
+ /*
+ * RESET is implemented by a positive pulse of at least 1 us
+ * at the reset pin.
+ *
+ * Configure RESET pins for NS DP83843 PHY, and RESET chip.
+ *
+ * Note: The RESET pin is high active, but there is an
+ * inverter on the SPD823TS board...
+ */
+ immr->im_ioport.iop_pcpar &= ~(CFG_PC_ETH_RESET);
+ immr->im_ioport.iop_pcdir |= CFG_PC_ETH_RESET;
+ /* assert RESET signal of PHY */
+ immr->im_ioport.iop_pcdat &= ~(CFG_PC_ETH_RESET);
+ udelay (10);
+ /* de-assert RESET signal of PHY */
+ immr->im_ioport.iop_pcdat |= CFG_PC_ETH_RESET;
+ udelay (10);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void show_boot_progress (int status)
+{
+#if defined(CONFIG_STATUS_LED)
+# if defined(STATUS_LED_YELLOW)
+ status_led_set (STATUS_LED_YELLOW,
+ (status < 0) ? STATUS_LED_ON : STATUS_LED_OFF);
+# endif /* STATUS_LED_YELLOW */
+# if defined(STATUS_LED_BOOT)
+ if (status == 6)
+ status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
+# endif /* STATUS_LED_BOOT */
+#endif /* CONFIG_STATUS_LED */
+}
+
+/* ------------------------------------------------------------------------- */
+
+void ide_set_reset(int on)
+{
+ volatile immap_t *immr = (immap_t *)CFG_IMMR;
+
+ /*
+ * Configure PC for IDE Reset Pin
+ */
+ if (on) { /* assert RESET */
+ immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET);
+ } else { /* release RESET */
+ immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET;
+ }
+
+ /* program port pin as GPIO output */
+ immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET);
+ immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET);
+ immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET;
+}
+
+/* ------------------------------------------------------------------------- */