init commit via android 4.4 uboot

1 files changed, 348 insertions, 0 deletions

diff --git a/board/LEOX/elpt860/elpt860.c b/board/LEOX/elpt860/elpt860.c
new file mode 100755
index 0000000..775db73
--- /dev/null
+++ b/board/LEOX/elpt860/elpt860.c
@@ -0,0 +1,348 @@
+/*
+**=====================================================================
+**
+** Copyright (C) 2000, 2001, 2002, 2003
+** The LEOX team <team@leox.org>, http://www.leox.org
+**
+** LEOX.org is about the development of free hardware and software resources
+**   for system on chip.
+**
+** Description: U-Boot port on the LEOX's ELPT860 CPU board
+** ~~~~~~~~~~~
+**
+**=====================================================================
+**
+** 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
+**
+**=====================================================================
+*/
+
+/*
+** Note 1: In this file, you have to provide the following functions:
+** ------
+**              int             board_early_init_f(void)
+**              int             checkboard(void)
+**              long int        initdram(int board_type)
+** called from 'board_init_f()' into 'common/board.c'
+**
+**              void            reset_phy(void)
+** called from 'board_init_r()' into 'common/board.c'
+*/
+
+#include <common.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+const uint init_sdram_table[] = {
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0x0FFCCC04, 0xFFFFFC04, 0x0FFC3C04, 0xFFFFFC04,
+	0xFFFFFC04,		/* last */
+	/*
+	 * SDRAM Initialization (offset 5 in UPMA 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.
+	 *
+	 */
+	0xFFFFFC04, 0xFFFFFC04, 0x0FFC3C04,	/* last */
+	/*
+	 * Burst Read. (Offset 8 in UPMA RAM)
+	 */
+	0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0x0FFC3C04, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC04, 0x0FFC3C04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC04, 0xFFFFFC04, 0x0FFC3C04, 0xFFFFFC04,	/* last */
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04, 0x0FFC3C04,
+	0xFFFFFC04, 0xFFFFFC04, 0x0FFFFC04, 0xFFFFFC04,	/* last */
+	/*
+	 * Burst Write. (Offset 20 in UPMA RAM)
+	 */
+	0x0FFC3C04, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC04, 0x0FFC3C04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC34, 0x0FAC0C34,
+	0xFFFFFC05, 0xFFFFFC04, 0x0FFCFC04, 0xFFFFFC05,	/* last */
+};
+
+const uint sdram_table[] = {
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0x0F0FFC24, 0x0F0CFC04, 0xFF0FFC04, 0x00AF3C04,
+	0xFF0FFC00,		/* last */
+	/*
+	 * SDRAM Initialization (offset 5 in UPMA 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.
+	 *
+	 */
+	0x0FFCCC04, 0xFFAFFC05, 0xFFAFFC05,	/* last */
+	/*
+	 * Burst Read. (Offset 8 in UPMA RAM)
+	 */
+	0x0F0FFC24, 0x0F0CFC04, 0xFF0FFC04, 0x00AF3C04,
+	0xF00FFC00, 0xF00FFC00, 0xF00FFC00, 0xFF0FFC00,
+	0x0FFCCC04, 0xFFAFFC05, 0xFFAFFC04, 0xFFAFFC04,
+	0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04,	/* last */
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0x0F0FFC24, 0x0F0CFC04, 0xFF0FFC04, 0x00AF0C00,
+	0xFF0FFC04, 0x0FFCCC04, 0xFFAFFC05,	/* last */
+	_NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPMA RAM)
+	 */
+	0x0F0FFC24, 0x0F0CFC04, 0xFF0FFC00, 0x00AF0C00,
+	0xF00FFC00, 0xF00FFC00, 0xF00FFC04, 0x0FFCCC04,
+	0xFFAFFC04, 0xFFAFFC05, 0xFFAFFC04, 0xFFAFFC04,
+	0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04,	/* last */
+	/*
+	 * Refresh  (Offset 30 in UPMA RAM)
+	 */
+	0x0FFC3C04, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC05, 0xFFFFFC04, 0xFFFFFC05, _NOT_USED_,
+	0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04, 0xFFAFFC04,	/* last */
+	/*
+	 * Exception. (Offset 3c in UPMA RAM)
+	 */
+	0x0FFFFC34, 0x0FAC0C34, 0xFFFFFC05, 0xFFAFFC04,	/* last */
+};
+
+/* ------------------------------------------------------------------------- */
+
+#define CFG_PC4    0x0800
+
+#define CFG_DS1    CFG_PC4
+
+/*
+ * Very early board init code (fpga boot, etc.)
+ */
+int board_early_init_f (void)
+{
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+
+	/*
+	 * Light up the red led on ELPT860 pcb (DS1) (PCDAT)
+	 */
+	immr->im_ioport.iop_pcdat &= ~CFG_DS1;	/* PCDAT (DS1 = 0)                */
+	immr->im_ioport.iop_pcpar &= ~CFG_DS1;	/* PCPAR (0=general purpose I/O)  */
+	immr->im_ioport.iop_pcdir |= CFG_DS1;	/* PCDIR (I/O: 0=input, 1=output) */
+
+	return (0);		/* success */
+}
+
+/*
+ * Check Board Identity:
+ *
+ * Test ELPT860 ID string
+ *
+ * Return 1 if no second DRAM bank, otherwise returns 0
+ */
+
+int checkboard (void)
+{
+	char *s = getenv ("serial#");
+
+	if (!s || strncmp (s, "ELPT860", 7))
+		printf ("### No HW ID - assuming ELPT860\n");
+
+	return (0);		/* success */
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size8, size9;
+	long int size_b0 = 0;
+
+	/*
+	 * This sequence initializes SDRAM chips on ELPT860 board
+	 */
+	upmconfig (UPMA, (uint *) init_sdram_table,
+		   sizeof (init_sdram_table) / sizeof (uint));
+
+	memctl->memc_mptpr = 0x0200;
+	memctl->memc_mamr = 0x18002111;
+
+	memctl->memc_mar = 0x00000088;
+	memctl->memc_mcr = 0x80002000;	/* CS1: SDRAM bank 0 */
+
+	upmconfig (UPMA, (uint *) sdram_table,
+		   sizeof (sdram_table) / sizeof (uint));
+
+	/*
+	 * Preliminary prescaler for refresh (depends on number of
+	 * banks): This value is selected for four cycles every 62.4 us
+	 * with two SDRAM banks or four cycles every 31.2 us with one
+	 * bank. It will be adjusted after memory sizing.
+	 */
+	memctl->memc_mptpr = CFG_MPTPR_2BK_8K;
+
+	/*
+	 * The following value is used as an address (i.e. opcode) for
+	 * the LOAD MODE REGISTER COMMAND during SDRAM initialisation. If
+	 * the port size is 32bit the SDRAM does NOT "see" the lower two
+	 * address lines, i.e. mar=0x00000088 -> opcode=0x00000022 for
+	 * MICRON SDRAMs:
+	 * ->    0 00 010 0 010
+	 *       |  |   | |   +- Burst Length = 4
+	 *       |  |   | +----- Burst Type   = Sequential
+	 *       |  |   +------- CAS Latency  = 2
+	 *       |  +----------- Operating Mode = Standard
+	 *       +-------------- Write Burst Mode = Programmed Burst Length
+	 */
+	memctl->memc_mar = 0x00000088;
+
+	/*
+	 * Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
+	 * preliminary addresses - these have to be modified after the
+	 * SDRAM size has been determined.
+	 */
+	memctl->memc_or1 = CFG_OR1_PRELIM;
+	memctl->memc_br1 = CFG_BR1_PRELIM;
+
+	memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE));	/* no refresh yet */
+
+	udelay (200);
+
+	/* perform SDRAM initializsation sequence */
+
+	memctl->memc_mcr = 0x80002105;	/* CS1: SDRAM bank 0 */
+	udelay (1);
+	memctl->memc_mcr = 0x80002230;	/* CS1: SDRAM bank 0 - execute twice */
+	udelay (1);
+
+	memctl->memc_mamr |= MAMR_PTAE;	/* enable refresh */
+
+	udelay (1000);
+
+	/*
+	 * Check Bank 0 Memory Size for re-configuration
+	 *
+	 * try 8 column mode
+	 */
+	size8 = dram_size (CFG_MAMR_8COL,
+			   SDRAM_BASE1_PRELIM, SDRAM_MAX_SIZE);
+
+	udelay (1000);
+
+	/*
+	 * try 9 column mode
+	 */
+	size9 = dram_size (CFG_MAMR_9COL,
+			   SDRAM_BASE1_PRELIM, SDRAM_MAX_SIZE);
+
+	if (size8 < size9) {	/* leave configuration at 9 columns       */
+		size_b0 = size9;
+		/* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */
+	} else {		/* back to 8 columns                      */
+
+		size_b0 = size8;
+		memctl->memc_mamr = CFG_MAMR_8COL;
+		udelay (500);
+		/* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */
+	}
+
+	udelay (1000);
+
+	/*
+	 * Adjust refresh rate depending on SDRAM type, both banks
+	 * For types > 128 MBit leave it at the current (fast) rate
+	 */
+	if (size_b0 < 0x02000000) {
+		/* reduce to 15.6 us (62.4 us / quad) */
+		memctl->memc_mptpr = CFG_MPTPR_2BK_4K;
+		udelay (1000);
+	}
+
+	/*
+	 * Final mapping: map bigger bank first
+	 */
+	memctl->memc_or1 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+	memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
+
+	{
+		unsigned long reg;
+
+		/* adjust refresh rate depending on SDRAM type, one bank */
+		reg = memctl->memc_mptpr;
+		reg >>= 1;	/* reduce to CFG_MPTPR_1BK_8K / _4K */
+		memctl->memc_mptpr = reg;
+	}
+
+	udelay (10000);
+
+	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 *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+	memctl->memc_mamr = mamr_value;
+
+	return (get_ram_size (base, maxsize));
+}
+
+/* ------------------------------------------------------------------------- */
+
+#define CFG_PA1     0x4000
+#define CFG_PA2     0x2000
+
+#define CFG_LBKs    (CFG_PA2 | CFG_PA1)
+
+void reset_phy (void)
+{
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+
+	/*
+	 * Ensure LBK LXT901 ethernet 1 & 2 = 0 ... for normal loopback in effect
+	 *                                          and no AUI loopback
+	 */
+	immr->im_ioport.iop_padat &= ~CFG_LBKs;	/* PADAT (LBK eth 1&2 = 0)        */
+	immr->im_ioport.iop_papar &= ~CFG_LBKs;	/* PAPAR (0=general purpose I/O)  */
+	immr->im_ioport.iop_padir |= CFG_LBKs;	/* PADIR (I/O: 0=input, 1=output) */
+}