mpc8308_p1m: support for MPC8308 P1M board
This patch provides support for MPC8308 P1M board with the following
set of features:
Dual UART is supported
NOR flash is supported
Both TSEC Ethernet controllers are supported
PCI Express initialization is supported
Both I2C controllers are supported
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/board/mpc8308_p1m/sdram.c b/board/mpc8308_p1m/sdram.c
new file mode 100644
index 0000000..a6e44e6
--- /dev/null
+++ b/board/mpc8308_p1m/sdram.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ * Copyright (C) 2010 Ilya Yanok, Emcraft Systems, yanok@emcraft.com
+ *
+ * This files is mostly identical to the original from
+ * board/freescale/mpc8308rdb/sdram.c
+ *
+ * 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 <mpc83xx.h>
+
+#include <asm/bitops.h>
+#include <asm/io.h>
+
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Fixed sdram init -- doesn't use serial presence detect.
+ *
+ * This is useful for faster booting in configs where the RAM is unlikely
+ * to be changed, or for things like NAND booting where space is tight.
+ */
+static long fixed_sdram(void)
+{
+ immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
+ u32 msize_log2 = __ilog2(msize);
+
+ out_be32(&im->sysconf.ddrlaw[0].bar,
+ CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000);
+ out_be32(&im->sysconf.ddrlaw[0].ar, LBLAWAR_EN | (msize_log2 - 1));
+ out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
+
+ out_be32(&im->ddr.csbnds[0].csbnds, (msize - 1) >> 24);
+ out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);
+
+ /* Currently we use only one CS, so disable the other bank. */
+ out_be32(&im->ddr.cs_config[1], 0);
+
+ out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_SDRAM_CLK_CNTL);
+ out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
+ out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
+ out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
+ out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
+
+ out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_DDR_SDRAM_CFG);
+ out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_DDR_SDRAM_CFG2);
+ out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
+ out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE2);
+
+ out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
+ sync();
+
+ /* enable DDR controller */
+ setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
+ sync();
+
+ return get_ram_size(CONFIG_SYS_DDR_SDRAM_BASE, msize);
+}
+
+phys_size_t initdram(int board_type)
+{
+ immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+ u32 msize;
+
+ if ((in_be32(&im->sysconf.immrbar) & IMMRBAR_BASE_ADDR) != (u32)im)
+ return -1;
+
+ /* DDR SDRAM */
+ msize = fixed_sdram();
+
+ /* return total bus SDRAM size(bytes) -- DDR */
+ return msize;
+}