mpc83xx: Add the support of MPC837xEMDS board

The MPC837xEMDS board support:
* DDR2 400MHz hardcoded and SPD init
* Local bus NOR Flash
* I2C, UART, MII and RTC
* eTSEC RGMII
* PCI host

Signed-off-by: Dave Liu <daveliu@freescale.com>

1 files changed, 144 insertions, 0 deletions

diff --git a/board/freescale/mpc837xemds/mpc837xemds.c b/board/freescale/mpc837xemds/mpc837xemds.c
new file mode 100644
index 0000000..0e4ec02
--- /dev/null
+++ b/board/freescale/mpc837xemds/mpc837xemds.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ * Dave Liu <daveliu@freescale.com>
+ *
+ * CREDITS: Kim Phillips contribute to LIBFDT code
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <spd.h>
+#if defined(CONFIG_SPD_EEPROM)
+#include <spd_sdram.h>
+#endif
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#elif defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#endif
+#if defined(CONFIG_PQ_MDS_PIB)
+#include "../common/pq-mds-pib.h"
+#endif
+
+int board_early_init_f(void)
+{
+	u8 *bcsr = (u8 *)CFG_BCSR;
+
+	/* Enable flash write */
+	bcsr[0x9] &= ~0x04;
+	/* Clear all of the interrupt of BCSR */
+	bcsr[0xe] = 0xff;
+
+	return 0;
+}
+
+int board_early_init_r(void)
+{
+#ifdef CONFIG_PQ_MDS_PIB
+	pib_init();
+#endif
+	return 0;
+}
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
+extern void ddr_enable_ecc(unsigned int dram_size);
+#endif
+int fixed_sdram(void);
+
+long int initdram(int board_type)
+{
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
+	u32 msize = 0;
+
+	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
+		return -1;
+
+#if defined(CONFIG_SPD_EEPROM)
+	msize = spd_sdram();
+#else
+	msize = fixed_sdram();
+#endif
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
+	/* Initialize DDR ECC byte */
+	ddr_enable_ecc(msize * 1024 * 1024);
+#endif
+
+	/* return total bus DDR size(bytes) */
+	return (msize * 1024 * 1024);
+}
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*************************************************************************
+ *  fixed sdram init -- doesn't use serial presence detect.
+ ************************************************************************/
+int fixed_sdram(void)
+{
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
+	u32 msize = CFG_DDR_SIZE * 1024 * 1024;
+	u32 msize_log2 = __ilog2(msize);
+
+	im->sysconf.ddrlaw[0].bar = CFG_DDR_SDRAM_BASE >> 12;
+	im->sysconf.ddrlaw[0].ar = LBLAWAR_EN | (msize_log2 - 1);
+
+#if (CFG_DDR_SIZE != 512)
+#warning Currenly any ddr size other than 512 is not supported
+#endif
+	im->sysconf.ddrcdr = CFG_DDRCDR_VALUE;
+	udelay(50000);
+
+	im->ddr.sdram_clk_cntl = CFG_DDR_SDRAM_CLK_CNTL;
+	udelay(1000);
+
+	im->ddr.csbnds[0].csbnds = CFG_DDR_CS0_BNDS;
+	im->ddr.cs_config[0] = CFG_DDR_CS0_CONFIG;
+	udelay(1000);
+
+	im->ddr.timing_cfg_0 = CFG_DDR_TIMING_0;
+	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
+	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;
+	im->ddr.timing_cfg_3 = CFG_DDR_TIMING_3;
+	im->ddr.sdram_cfg = CFG_DDR_SDRAM_CFG;
+	im->ddr.sdram_cfg2 = CFG_DDR_SDRAM_CFG2;
+	im->ddr.sdram_mode = CFG_DDR_MODE;
+	im->ddr.sdram_mode2 = CFG_DDR_MODE2;
+	im->ddr.sdram_interval = CFG_DDR_INTERVAL;
+	__asm__ __volatile__("sync");
+	udelay(1000);
+
+	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
+	udelay(2000);
+	return CFG_DDR_SIZE;
+}
+#endif /*!CFG_SPD_EEPROM */
+
+int checkboard(void)
+{
+	puts("Board: Freescale MPC837xEMDS\n");
+	return 0;
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+#if defined(CONFIG_OF_FLAT_TREE)
+	u32 *p;
+	int len;
+
+	p = ft_get_prop(blob, "/memory/reg", &len);
+	if (p != NULL) {
+		*p++ = cpu_to_be32(bd->bi_memstart);
+		*p = cpu_to_be32(bd->bi_memsize);
+	}
+#endif
+	ft_cpu_setup(blob, bd);
+#ifdef CONFIG_PCI
+	ft_pci_setup(blob, bd);
+#endif
+}
+#endif /* CONFIG_OF_BOARD_SETUP */