powerpc/p3060qds: Add board related support for P3060QDS platform

The P3060QDS is a Freescale reference board for the six-core P3060 SOC.

P3060QDS Board Overview:
 Memory subsystem:
  - 2G Bytes unbuffered DDR3 SDRAM SO-DIMM(64bit bus)
  - 128M Bytes NOR flash single-chip memory
  - 16M Bytes SPI flash
  - 8K Bytes AT24C64 I2C EEPROM for RCW
 Ethernet:
  - Eight Ethernet controllers (4x1G + 4x1G/2.5G)
  - Three VSC8641 PHYs on board (2xRGMII + 1xMII)
  - Suport multiple Vitesse VSC8234 SGMII Cards in Slot1/2/3
 PCIe: Two PCI Express 2.0 controllers/ports
 USB:  Two USB2.0, USB1(TYPE-A) and USB2(TYPE-AB) on board
 I2C:  Four I2C controllers
 UART: Supports two dUARTs up to 115200 bps for console
 RapidIO:  Two RapidIO, sRIO1 and sRIO2

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 248 insertions, 0 deletions

diff --git a/board/freescale/p3060qds/ddr.c b/board/freescale/p3060qds/ddr.c
new file mode 100644
index 0000000..9affbf0
--- /dev/null
+++ b/board/freescale/p3060qds/ddr.c
@@ -0,0 +1,248 @@
+/*
+ * Copyright 2009-2011 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 <i2c.h>
+#include <hwconfig.h>
+#include <asm/mmu.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/fsl_ddr_dimm_params.h>
+#include <asm/fsl_law.h>
+
+#include "p3060qds.h"
+
+/*
+ * Fixed sdram init -- doesn't use serial presence detect.
+ */
+
+phys_size_t fixed_sdram(void)
+{
+	int i;
+	char buf[32];
+	fsl_ddr_cfg_regs_t ddr_cfg_regs;
+	phys_size_t ddr_size;
+	unsigned int lawbar1_target_id;
+	ulong ddr_freq, ddr_freq_mhz;
+
+	ddr_freq = get_ddr_freq(0);
+	ddr_freq_mhz = ddr_freq / 1000000;
+
+	printf("Configuring DDR for %s MT/s data rate\n",
+				strmhz(buf, ddr_freq));
+
+	for (i = 0; fixed_ddr_parm_0[i].max_freq > 0; i++) {
+		if ((ddr_freq_mhz > fixed_ddr_parm_0[i].min_freq) &&
+		   (ddr_freq_mhz <= fixed_ddr_parm_0[i].max_freq)) {
+			memcpy(&ddr_cfg_regs,
+				fixed_ddr_parm_0[i].ddr_settings,
+				sizeof(ddr_cfg_regs));
+			break;
+		}
+	}
+
+	if (fixed_ddr_parm_0[i].max_freq == 0)
+		panic("Unsupported DDR data rate %s MT/s data rate\n",
+			strmhz(buf, ddr_freq));
+
+	ddr_size = (phys_size_t) CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+	ddr_cfg_regs.ddr_cdr1 = DDR_CDR1_DHC_EN;
+	fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
+
+	/*
+	 * setup laws for DDR. If not interleaving, presuming half memory on
+	 * DDR1 and the other half on DDR2
+	 */
+	if (fixed_ddr_parm_0[i].ddr_settings->cs[0].config & 0x20000000) {
+		if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
+				 ddr_size,
+				 LAW_TRGT_IF_DDR_INTRLV) < 0) {
+			printf("ERROR setting Local Access Windows for DDR\n");
+			return 0;
+		}
+	} else {
+		lawbar1_target_id = LAW_TRGT_IF_DDR_1;
+		if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
+				 ddr_size,
+				 lawbar1_target_id) < 0) {
+			printf("ERROR setting Local Access Windows for DDR\n");
+			return 0;
+		}
+	}
+	return ddr_size;
+}
+
+struct board_specific_params {
+	u32 n_ranks;
+	u32 datarate_mhz_high;
+	u32 clk_adjust;
+	u32 wrlvl_start;
+	u32 cpo;
+	u32 write_data_delay;
+	u32 force_2T;
+};
+
+/*
+ * This table contains all valid speeds we want to override with board
+ * specific parameters. datarate_mhz_high values need to be in ascending order
+ * for each n_ranks group.
+ */
+static const struct board_specific_params udimm[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi|  clk| wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz|adjst| start |      |delay |
+	 */
+	{4,   850,    4,     6,   0xff,    2,  0},
+	{4,   950,    5,     7,   0xff,    2,  0},
+	{4,  1050,    5,     8,   0xff,    2,  0},
+	{4,  1250,    5,    10,   0xff,    2,  0},
+	{4,  1350,    5,    11,   0xff,    2,  0},
+	{4,  1666,    5,    12,   0xff,    2,  0},
+	{2,   850,    5,     6,   0xff,    2,  0},
+	{2,   950,    5,     7,   0xff,    2,  0},
+	{2,  1250,    4,     6,   0xff,    2,  0},
+	{2,  1350,    5,     7,   0xff,    2,  0},
+	{2,  1666,    5,     8,   0xff,    2,  0},
+	{1,   850,    4,     5,   0xff,    2,  0},
+	{1,   950,    4,     7,   0xff,    2,  0},
+	{1,  1666,    4,     8,   0xff,    2,  0},
+	{}
+};
+
+static const struct board_specific_params rdimm[] = {
+	/*
+	 * memory controller 0
+	 *   num|  hi|  clk| wrlvl | cpo  |wrdata|2T
+	 * ranks| mhz|adjst| start |      |delay |
+	 */
+	{4,   850,    4,     6,   0xff,    2,  0},
+	{4,   950,    5,     7,   0xff,    2,  0},
+	{4,  1050,    5,     8,   0xff,    2,  0},
+	{4,  1250,    5,    10,   0xff,    2,  0},
+	{4,  1350,    5,    11,   0xff,    2,  0},
+	{4,  1666,    5,    12,   0xff,    2,  0},
+	{2,   850,    4,     6,   0xff,    2,  0},
+	{2,  1050,    4,     7,   0xff,    2,  0},
+	{2,  1666,    4,     8,   0xff,    2,  0},
+	{1,   850,    4,     5,   0xff,    2,  0},
+	{1,   950,    4,     7,   0xff,    2,  0},
+	{1,  1666,    4,     8,   0xff,    2,  0},
+	{}
+};
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+				dimm_params_t *pdimm,
+				unsigned int ctrl_num)
+{
+	const struct board_specific_params *pbsp, *pbsp_highest = NULL;
+	ulong ddr_freq;
+
+	if (ctrl_num) {
+		printf("Wrong parameter for controller number %d", ctrl_num);
+		return;
+	}
+	if (!pdimm->n_ranks)
+		return;
+
+	if (popts->registered_dimm_en)
+		pbsp = rdimm;
+	else
+		pbsp = udimm;
+
+	/* Get clk_adjust, cpo, write_data_delay,2T, according to the board ddr
+	 * freqency and n_banks specified in board_specific_parameters table.
+	 */
+	ddr_freq = get_ddr_freq(0) / 1000000;
+	while (pbsp->datarate_mhz_high) {
+		if (pbsp->n_ranks == pdimm->n_ranks) {
+			if (ddr_freq <= pbsp->datarate_mhz_high) {
+				popts->cpo_override = pbsp->cpo;
+				popts->write_data_delay =
+					pbsp->write_data_delay;
+				popts->clk_adjust = pbsp->clk_adjust;
+				popts->wrlvl_start = pbsp->wrlvl_start;
+				popts->twoT_en = pbsp->force_2T;
+				goto found;
+			}
+			pbsp_highest = pbsp;
+		}
+		pbsp++;
+	}
+
+	if (pbsp_highest) {
+		printf("Error: board specific timing not found "
+			"for data rate %lu MT/s!\n"
+			"Trying to use the highest speed (%u) parameters\n",
+			ddr_freq, pbsp_highest->datarate_mhz_high);
+		popts->cpo_override = pbsp_highest->cpo;
+		popts->write_data_delay = pbsp_highest->write_data_delay;
+		popts->clk_adjust = pbsp_highest->clk_adjust;
+		popts->wrlvl_start = pbsp_highest->wrlvl_start;
+		popts->twoT_en = pbsp_highest->force_2T;
+	} else {
+		panic("DIMM is not supported by this board");
+	}
+
+
+found:
+
+	/*
+	 * The datasheet of HMT125U7BFR8C-H9 blocks CL=7 as reservered.
+	 * However SPD still claims CL=7 is supported. Extensive tests
+	 * confirmed this board cannot work stably with CL=7 with this
+	 * particular DIMM.
+	 */
+	if (ddr_freq >= 800 && ddr_freq < 1066 && \
+		!strncmp(pdimm[0].mpart, "HMT125U7BFR8C-H9", 16)) {
+		popts->cas_latency_override = 1;
+		popts->cas_latency_override_value = 8;
+		debug("Override CL to 8\n");
+	}
+	/*
+	 * Factors to consider for half-strength driver enable:
+	 *	- number of DIMMs installed
+	 */
+	popts->half_strength_driver_enable = 0;
+	/*
+	 * Write leveling override
+	 */
+	popts->wrlvl_override = 1;
+	popts->wrlvl_sample = 0xf;
+
+	/*
+	 * Rtt and Rtt_WR override
+	 */
+	popts->rtt_override = 0;
+
+	/* Enable ZQ calibration */
+	popts->zq_en = 1;
+
+	/* DHC_EN =1, ODT = 60 Ohm */
+	popts->ddr_cdr1 = DDR_CDR1_DHC_EN;
+}
+
+phys_size_t initdram(int board_type)
+{
+	phys_size_t dram_size;
+
+	puts("Initializing....");
+
+	if (fsl_use_spd()) {
+		puts("using SPD\n");
+		dram_size = fsl_ddr_sdram();
+	} else {
+		puts("using fixed parameters\n");
+		dram_size = fixed_sdram();
+	}
+
+	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+	dram_size *= 0x100000;
+
+	debug("    DDR: ");
+	return dram_size;
+}