powerpc/85xx: Add TWR-P10xx board support

TWR-P1025 Specification:
-----------------------
Memory subsystem:
   512MB DDR3 (on board DDR)
   64Mbyte 16bit NOR flash
   One microSD Card slot

Ethernet:
   eTSEC1: Connected to Atheros AR8035 GETH PHY
   eTSEC3: Connected to Atheros AR8035 GETH PHY

UART:
   Two UARTs are routed to the FDTI dual USB to RS232 convertor

USB: Two USB2.0 Type A ports

I2C:
   AT24C01B 1K Board EEPROM (8 bit address)

QUICC Engine:
   Connected to DP83849i PHY supply two 10/100M ethernet ports
   QE UART for RS485 or RS232

PCIE:
   One mini-PCIE slot

Signed-off-by: Michael Johnston <michael.johnston@freescale.com>
Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
[yorksun: Fixup include/configs/p1_twr.h]
Signed-off-by: York Sun <yorksun@freescale.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/board/freescale/p1_twr/ddr.c b/board/freescale/p1_twr/ddr.c
new file mode 100644
index 0000000..ff278ae
--- /dev/null
+++ b/board/freescale/p1_twr/ddr.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ */
+
+#include <common.h>
+#include <asm/mmu.h>
+#include <asm/immap_85xx.h>
+#include <asm/processor.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+#include <asm/io.h>
+#include <asm/fsl_law.h>
+
+/* Fixed sdram init -- doesn't use serial presence detect. */
+phys_size_t fixed_sdram(void)
+{
+	sys_info_t sysinfo;
+	char buf[32];
+	size_t ddr_size;
+	fsl_ddr_cfg_regs_t ddr_cfg_regs = {
+		.cs[0].bnds = CONFIG_SYS_DDR_CS0_BNDS,
+		.cs[0].config = CONFIG_SYS_DDR_CS0_CONFIG,
+		.cs[0].config_2 = CONFIG_SYS_DDR_CS0_CONFIG_2,
+#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
+		.cs[1].bnds = CONFIG_SYS_DDR_CS1_BNDS,
+		.cs[1].config = CONFIG_SYS_DDR_CS1_CONFIG,
+		.cs[1].config_2 = CONFIG_SYS_DDR_CS1_CONFIG_2,
+#endif
+		.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3,
+		.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0,
+		.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1,
+		.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2,
+		.ddr_sdram_cfg = CONFIG_SYS_DDR_CONTROL,
+		.ddr_sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL_2,
+		.ddr_sdram_mode = CONFIG_SYS_DDR_MODE_1,
+		.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2,
+		.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
+		.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL,
+		.ddr_data_init = CONFIG_SYS_DDR_DATA_INIT,
+		.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL,
+		.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
+		.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
+		.timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4,
+		.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
+		.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
+		.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
+		.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
+		.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
+		.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
+	};
+
+	get_sys_info(&sysinfo);
+	printf("Configuring DDR for %s MT/s data rate\n",
+			strmhz(buf, sysinfo.freqDDRBus));
+
+	ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+
+	fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
+
+	if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
+				ddr_size, LAW_TRGT_IF_DDR_1) < 0) {
+		printf("ERROR setting Local Access Windows for DDR\n");
+		return 0;
+	};
+
+	return ddr_size;
+}