summaryrefslogtreecommitdiff
path: root/board/adder/adder.c
diff options
context:
space:
mode:
authorwdenk <wdenk>2004-06-09 21:50:45 +0000
committerwdenk <wdenk>2004-06-09 21:50:45 +0000
commit2d24a3a787c2376c2c2c86a511eee78ef170923f (patch)
treedb949ae010577426e1ead185352703cdb68a36c7 /board/adder/adder.c
parente63c8ee3dcde0992377df434ab5af486dd866866 (diff)
downloadu-boot-imx-2d24a3a787c2376c2c2c86a511eee78ef170923f.zip
u-boot-imx-2d24a3a787c2376c2c2c86a511eee78ef170923f.tar.gz
u-boot-imx-2d24a3a787c2376c2c2c86a511eee78ef170923f.tar.bz2
* Patch by Yuli Barcohen, 09 Jun 2004:
Add support for Analogue&Micro Adder87x and the older AdderII board. * Patch by Ming-Len Wu, 09 Jun 2004: Add suppport for MC9328 (Dargonball) CPU and Motorola MX1ADS board
Diffstat (limited to 'board/adder/adder.c')
-rw-r--r--board/adder/adder.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/board/adder/adder.c b/board/adder/adder.c
new file mode 100644
index 0000000..cab6e2f
--- /dev/null
+++ b/board/adder/adder.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2004 Arabella Software Ltd.
+ * Yuli Barcohen <yuli@arabellasw.com>
+ *
+ * Support for Analogue&Micro Adder boards family.
+ * Tested on AdderII and Adder87x.
+ *
+ * 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>
+
+/*
+ * SDRAM is single Samsung K4S643232F-T70 chip.
+ * Minimal CPU frequency is 40MHz.
+ */
+static uint sdram_table[] = {
+ /* Single read (offset 0x00 in UPM RAM) */
+ 0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xe0bbbc00,
+ 0x10f77c44, 0xf3fffc07, 0xfffffc04, 0xfffffc04,
+
+ /* Burst read (offset 0x08 in UPM RAM) */
+ 0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xf0affc00,
+ 0xf0affc00, 0xf0affc00, 0xf0affc00, 0x10a77c44,
+ 0xf7bffc47, 0xfffffc35, 0xfffffc34, 0xfffffc35,
+ 0xfffffc35, 0x1ff77c35, 0xfffffc34, 0x1fb57c35,
+
+ /* Single write (offset 0x18 in UPM RAM) */
+ 0x1f27fc24, 0xe0aebc04, 0x00b93c00, 0x13f77c47,
+ 0xfffdfc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+ /* Burst write (offset 0x20 in UPM RAM) */
+ 0x1f07fc24, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
+ 0xf0affc00, 0xe0abbc00, 0x1fb77c47, 0xfffffc04,
+ 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+ 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+ /* Refresh (offset 0x30 in UPM RAM) */
+ 0x1ff5fca4, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+ 0xfffffc84, 0xfffffc07, 0xfffffc04, 0xfffffc04,
+ 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+ /* Exception (offset 0x3C in UPM RAM) */
+ 0xfffffc27, 0xfffffc04, 0xfffffc04, 0xfffffc04
+};
+
+long int initdram (int board_type)
+{
+ long int msize = CFG_SDRAM_SIZE;
+ volatile immap_t *immap = (volatile immap_t *)CFG_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+ upmconfig(UPMA, sdram_table, sizeof(sdram_table) / sizeof(uint));
+
+ /* Configure SDRAM refresh */
+ memctl->memc_mptpr = MPTPR_PTP_DIV32; /* BRGCLK/32 */
+
+ memctl->memc_mamr = (94 << 24) | CFG_MAMR;
+ memctl->memc_mar = 0x0;
+ udelay(200);
+
+ /* Run precharge from location 0x15 */
+ memctl->memc_mcr = 0x80002115;
+ udelay(200);
+
+ /* Run 8 refresh cycles */
+ memctl->memc_mcr = 0x80002830;
+ udelay(200);
+
+ memctl->memc_mar = 0x88;
+ udelay(200);
+
+ /* Run MRS pattern from location 0x16 */
+ memctl->memc_mcr = 0x80002116;
+ udelay(200);
+
+ return msize;
+}
+
+int checkboard( void )
+{
+ puts("Board: Adder");
+#if defined(CONFIG_MPC885_FAMILY)
+ puts("87x\n");
+#elif defined(CONFIG_MPC866_FAMILY)
+ puts("II\n");
+#endif
+
+ return 0;
+}