* Patches by Udi Finkelstein, 2 June 2003:

  - Added support for custom keyboards, initialized by defining a
    board-specific drv_keyboard_init as well as defining CONFIG_KEYBOARD .
  - Added support for the RBC823 board.
  - cpu/mpc8xx/lcd.c now automatically calculates the
    Horizontal Pixel Count field.

* Fix alignment problem in BOOTP (dhcp_leasetime option)
  [pointed out by Nicolas Lacressonnière, 2 Jun 2003]

* Patch by Mark Rakes, 14 May 2003:
  add support for Intel e1000 gig cards.

* Patch by Nye Liu, 3 Jun 2003:
  fix critical typo in MAMR definition (include/mpc8xx.h)

* Fix requirement to align U-Boot image on 16 kB boundaries on PPC.

* Patch by Klaus Heydeck, 2 Jun 2003
  Minor changes for KUP4K configuration

1 files changed, 292 insertions, 0 deletions

diff --git a/board/rbc823/rbc823.c b/board/rbc823/rbc823.c
new file mode 100644
index 0000000..24ed501
--- /dev/null
+++ b/board/rbc823/rbc823.c
@@ -0,0 +1,292 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.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 <linux/mtd/doc2000.h>
+
+extern int kbd_init(void);
+extern int drv_kbd_init(void);
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+const uint sdram_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00,
+	0x1FF77C47, /* 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.
+	 *
+	 */
+		    0x1FF77C34, 0xEFEABC34, 0x1FB57C35, /* last */
+	/*
+	 * Burst Read. (Offset 8 in UPMA RAM)
+	 */
+	0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00,
+	0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPMA RAM)
+	 */
+	0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00,
+	0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */
+					    _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPMA RAM)
+	 */
+	0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
+	0xFFFFFC84, 0xFFFFFC07, /* last */
+				_NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPMA RAM)
+	 */
+	0x1FF7FC07, /* last */
+		    _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+const uint static_table[] =
+{
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0x0FFFFC04, 0x0FF3FC04, 0x0FF3CC04, 0x0FF3CC04,
+	0x0FF3EC04, 0x0FF3CC00, 0x0FF7FC04, 0x3FFFFC04,
+	0xFFFFFC04, 0xFFFFFC05, /* 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_,
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0x0FFFFC04, 0x00FFFC04, 0x00FFFC04, 0x00FFFC04,
+	0x01FFFC00, 0x3FFFFC04, 0xFFFFFC04, 0xFFFFFC05, /* 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_,
+	_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_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check Board Identity:
+ *
+ * Test TQ ID string (TQM8xx...)
+ * If present, check for "L" type (no second DRAM bank),
+ * otherwise "L" type is assumed as default.
+ *
+ * Return 1 for "L" type, 0 else.
+ */
+
+int checkboard (void)
+{
+    unsigned char *s = getenv("serial#");
+
+    if (!s || strncmp(s, "TQM8", 4)) {
+	printf ("### No HW ID - assuming RBC823\n");
+	return (0);
+    }
+
+    puts(s);
+    putc ('\n');
+
+    return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+    volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &immap->im_memctl;
+    long int size_b0, size8, size9;
+
+    upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+    /*
+     * 1 Bank of 64Mbit x 2 devices 
+     */
+    memctl->memc_mptpr = CFG_MPTPR_1BK_4K;
+    memctl->memc_mar  = 0x00000088;
+
+    /*
+     * Map controller SDRAM bank 0
+     */
+    memctl->memc_or4 = CFG_OR4_PRELIM;
+    memctl->memc_br4 = CFG_BR4_PRELIM;
+    memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
+    udelay(200);
+
+    /* 
+     * Perform SDRAM initializsation sequence 
+     */
+    memctl->memc_mcr  = 0x80008105;	/* SDRAM bank 0 */
+    udelay(1);
+    memctl->memc_mamr = (CFG_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_8X;
+    udelay(200);
+    memctl->memc_mcr  = 0x80008130;	/* SDRAM bank 0 - execute twice */
+    udelay(1);
+    memctl->memc_mamr = (CFG_MAMR_8COL & ~(MAMR_TLFA_MSK)) | MAMR_TLFA_4X;
+    udelay(200); 
+
+    memctl->memc_mamr |= MAMR_PTAE;	/* enable refresh */
+    udelay (1000);
+
+    /*
+     * 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_4K; // 16: but should be: CFG_MPTPR_1BK_4K
+
+    /*
+     * Check Bank 0 Memory Size for re-configuration
+     *
+     * try 8 column mode
+     */
+    size8 = dram_size (CFG_MAMR_8COL, (ulong *)SDRAM_BASE4_PRELIM, SDRAM_MAX_SIZE);
+    udelay (1000);
+
+    /*
+     * try 9 column mode
+     */
+    size9 = dram_size (CFG_MAMR_9COL, (ulong *)SDRAM_BASE4_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);
+    }
+
+    /* SDRAM Bank 0 is bigger - map first	*/
+
+    memctl->memc_or4 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+    memctl->memc_br4 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
+
+    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;
+    volatile long int	 *addr;
+    long int		  cnt, val;
+
+    memctl->memc_mamr = mamr_value;
+
+    for (cnt = maxsize/sizeof(long)/2; cnt > 0; cnt >>= 1) {
+	addr = base + cnt;	/* pointer arith! */
+
+	*addr = ~cnt;
+    }
+
+    /* write 0 to base address */
+    addr = base;
+    *addr = 0;
+
+    /* check at base address */
+    if ((val = *addr) != 0) {
+	return (0);
+    }
+
+    for (cnt = 1; cnt < maxsize/sizeof(long) ; cnt <<= 1) {
+	addr = base + cnt;	/* pointer arith! */
+
+	val = *addr;
+
+	if (val != (~cnt)) {
+	    return (cnt * sizeof(long));
+	}
+    }
+    return cnt * sizeof(long);
+    /* NOTREACHED */
+}
+
+void doc_init(void)
+{
+    volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+    volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+    upmconfig(UPMB, (uint *)static_table, sizeof(static_table)/sizeof(uint));
+    memctl->memc_mbmr = MAMR_DSA_1_CYCL;
+
+    doc_probe(FLASH_BASE1_PRELIM);
+}
+