powerpc/b4860qds: Added Support for B4860QDS

B4860QDS is a high-performance computing evaluation, development and
test platform supporting the B4860 QorIQ Power Architecture processor.

B4860QDS Overview
------------------
- DDRC1: Ten separate DDR3 parts of 16-bit to support 72-bit (ECC) at 1866MT/s,
  ECC, 4 GB of memory in two ranks of 2 GB.
- DDRC2: Five separate DDR3 parts of 16-bit to support 72-bit (ECC) at 1866MT/s,  ECC, 2 GB of memory. Single rank.
- SerDes 1 multiplexing: Two Vitesse (transmit and receive path) cross-point
  16x16 switch VSC3316
- SerDes 2 multiplexing: Two Vitesse (transmit and receive path) cross-point
  8x8 switch VSC3308
- USB 2.0 ULPI PHY USB3315 by SMSC supports USB port in host mode.
- B4860 UART port is available over USB-to-UART translator USB2SER or over
  RS232 flat cable.
- A Vitesse dual SGMII phy VSC8662 links the B4860 SGMII lines to 2xRJ-45 copper
  connectors for Stand-alone mode and to the 1000Base-X over AMC MicroTCA
  connector ports 0 and 2 for AMC mode.
- The B4860 configuration may be loaded from nine bits coded reset
  configuration reset source. The RCW source is set by appropriate
  DIP-switches:
- 16-bit NOR Flash / PROMJet
- QIXIS 8-bit NOR Flash Emulator
- 8-bit NAND Flash
- 24-bit SPI Flash
- Long address I2C EEPROM
- Available debug interfaces are:
	- On-board eCWTAP controller with ETH and USB I/F
	- JTAG/COP 16-pin header for any external TAP controller
	- External JTAG source over AMC to support B2B configuration
	- 70-pin Aurora debug connector
- QIXIS (FPGA) logic:
	- 2 KB internal memory space including
- IDT840NT4 clock synthesizer provides B4860 essential clocks : SYSCLK,
  DDRCLK1, 2 and RTCCLK.
- Two 8T49N222A SerDes ref clock devices support two SerDes port clocks
  - total four refclk, including CPRI clock scheme

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Shaveta Leekha <shaveta@freescale.com>
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Sandeep Singh <Sandeep@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/b4860qds/b4860qds.c b/board/freescale/b4860qds/b4860qds.c
new file mode 100644
index 0000000..88bdc1f
--- /dev/null
+++ b/board/freescale/b4860qds/b4860qds.c
@@ -0,0 +1,458 @@
+/*
+ * Copyright 2011-2012 Freescale Semiconductor, Inc.
+ *
+ * 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 <command.h>
+#include <i2c.h>
+#include <netdev.h>
+#include <linux/compiler.h>
+#include <asm/mmu.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_law.h>
+#include <asm/fsl_serdes.h>
+#include <asm/fsl_portals.h>
+#include <asm/fsl_liodn.h>
+#include <fm_eth.h>
+
+#include "../common/qixis.h"
+#include "../common/vsc3316_3308.h"
+#include "b4860qds.h"
+#include "b4860qds_qixis.h"
+#include "b4860qds_crossbar_con.h"
+
+#define CLK_MUX_SEL_MASK	0x4
+#define ETH_PHY_CLK_OUT		0x4
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	char buf[64];
+	u8 sw;
+	struct cpu_type *cpu = gd->cpu;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+	unsigned int i;
+	static const char *const freq[] = {"100", "125", "156.25", "161.13",
+						"122.88", "122.88", "122.88"};
+	int clock;
+
+	printf("Board: %sQDS, ", cpu->name);
+	printf("Sys ID: 0x%02x, Sys Ver: 0x%02x, ",
+		QIXIS_READ(id), QIXIS_READ(arch));
+
+	sw = QIXIS_READ(brdcfg[0]);
+	sw = (sw & QIXIS_LBMAP_MASK) >> QIXIS_LBMAP_SHIFT;
+
+	if (sw < 0x8)
+		printf("vBank: %d\n", sw);
+	else if (sw >= 0x8 && sw <= 0xE)
+		puts("NAND\n");
+	else
+		printf("invalid setting of SW%u\n", QIXIS_LBMAP_SWITCH);
+
+	printf("FPGA: v%d (%s), build %d",
+		(int)QIXIS_READ(scver), qixis_read_tag(buf),
+		(int)qixis_read_minor());
+	/* the timestamp string contains "\n" at the end */
+	printf(" on %s", qixis_read_time(buf));
+
+	/* Display the RCW, so that no one gets confused as to what RCW
+	 * we're actually using for this boot.
+	 */
+	puts("Reset Configuration Word (RCW):");
+	for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
+		u32 rcw = in_be32(&gur->rcwsr[i]);
+
+		if ((i % 4) == 0)
+			printf("\n       %08x:", i * 4);
+		printf(" %08x", rcw);
+	}
+	puts("\n");
+
+	/*
+	 * Display the actual SERDES reference clocks as configured by the
+	 * dip switches on the board.  Note that the SWx registers could
+	 * technically be set to force the reference clocks to match the
+	 * values that the SERDES expects (or vice versa).  For now, however,
+	 * we just display both values and hope the user notices when they
+	 * don't match.
+	 */
+	puts("SERDES Reference Clocks: ");
+	sw = QIXIS_READ(brdcfg[2]);
+	clock = (sw >> 5) & 7;
+	printf("Bank1=%sMHz ", freq[clock]);
+	sw = QIXIS_READ(brdcfg[4]);
+	clock = (sw >> 6) & 3;
+	printf("Bank2=%sMHz\n", freq[clock]);
+
+	return 0;
+}
+
+int select_i2c_ch_pca(u8 ch)
+{
+	int ret;
+
+	/* Selecting proper channel via PCA*/
+	ret = i2c_write(I2C_MUX_PCA_ADDR, 0x0, 1, &ch, 1);
+	if (ret) {
+		printf("PCA: failed to select proper channel.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+int configure_vsc3316_3308(void)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	unsigned int num_vsc16_con, num_vsc08_con;
+	u32 serdes1_prtcl, serdes2_prtcl;
+	int ret;
+
+	serdes1_prtcl = in_be32(&gur->rcwsr[4]) &
+			FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
+	if (!serdes1_prtcl) {
+		printf("SERDES1 is not enabled\n");
+		return 0;
+	}
+	serdes1_prtcl >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
+	debug("Using SERDES1 Protocol: 0x%x:\n", serdes1_prtcl);
+
+	serdes2_prtcl = in_be32(&gur->rcwsr[4]) &
+			FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
+	if (!serdes2_prtcl) {
+		printf("SERDES2 is not enabled\n");
+		return 0;
+	}
+	serdes2_prtcl >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
+	debug("Using SERDES2 Protocol: 0x%x:\n", serdes2_prtcl);
+
+	switch (serdes1_prtcl) {
+	case 0x2a:
+	case 0x2C:
+	case 0x2D:
+	case 0x2E:
+			/*
+			 * Configuration:
+			 * SERDES: 1
+			 * Lanes: A,B: SGMII
+			 * Lanes: C,D,E,F,G,H: CPRI
+			 */
+		debug("Configuring crossbar to use onboard SGMII PHYs:"
+				"srds_prctl:%x\n", serdes1_prtcl);
+		num_vsc16_con = NUM_CON_VSC3316;
+		/* Configure VSC3316 crossbar switch */
+		ret = select_i2c_ch_pca(I2C_CH_VSC3316);
+		if (!ret) {
+			ret = vsc3316_config(VSC3316_TX_ADDRESS,
+					vsc16_tx_sgmii_lane_ab, num_vsc16_con);
+			if (ret)
+				return ret;
+			ret = vsc3316_config(VSC3316_RX_ADDRESS,
+					vsc16_rx_sgmii_lane_ab, num_vsc16_con);
+			if (ret)
+				return ret;
+		} else {
+			return ret;
+		}
+		break;
+
+#ifdef CONFIG_PPC_B4420
+	case 0x18:
+			/*
+			 * Configuration:
+			 * SERDES: 1
+			 * Lanes: A,B,C,D: SGMII
+			 * Lanes: E,F,G,H: CPRI
+			 */
+		debug("Configuring crossbar to use onboard SGMII PHYs:"
+				"srds_prctl:%x\n", serdes1_prtcl);
+		num_vsc16_con = NUM_CON_VSC3316;
+		/* Configure VSC3316 crossbar switch */
+		ret = select_i2c_ch_pca(I2C_CH_VSC3316);
+		if (!ret) {
+			ret = vsc3316_config(VSC3316_TX_ADDRESS,
+					vsc16_tx_sgmii_lane_cd, num_vsc16_con);
+			if (ret)
+				return ret;
+			ret = vsc3316_config(VSC3316_RX_ADDRESS,
+					vsc16_rx_sgmii_lane_cd, num_vsc16_con);
+			if (ret)
+				return ret;
+		} else {
+			return ret;
+		}
+		break;
+#endif
+
+	case 0x3E:
+	case 0x0D:
+	case 0x0E:
+	case 0x12:
+		num_vsc16_con = NUM_CON_VSC3316;
+		/* Configure VSC3316 crossbar switch */
+		ret = select_i2c_ch_pca(I2C_CH_VSC3316);
+		if (!ret) {
+			ret = vsc3316_config(VSC3316_TX_ADDRESS,
+					vsc16_tx_sfp, num_vsc16_con);
+			if (ret)
+				return ret;
+			ret = vsc3316_config(VSC3316_RX_ADDRESS,
+					vsc16_rx_sfp, num_vsc16_con);
+			if (ret)
+				return ret;
+		} else {
+			return ret;
+		}
+		break;
+	default:
+		printf("WARNING:VSC crossbars programming not supported for:%x"
+					" SerDes1 Protocol.\n", serdes1_prtcl);
+		return -1;
+	}
+
+	switch (serdes2_prtcl) {
+	case 0x9E:
+	case 0x9A:
+	case 0x98:
+	case 0xb2:
+	case 0x49:
+	case 0x4E:
+	case 0x8D:
+	case 0x7A:
+		num_vsc08_con = NUM_CON_VSC3308;
+		/* Configure VSC3308 crossbar switch */
+		ret = select_i2c_ch_pca(I2C_CH_VSC3308);
+		if (!ret) {
+			ret = vsc3308_config(VSC3308_TX_ADDRESS,
+					vsc08_tx_amc, num_vsc08_con);
+			if (ret)
+				return ret;
+			ret = vsc3308_config(VSC3308_RX_ADDRESS,
+					vsc08_rx_amc, num_vsc08_con);
+			if (ret)
+				return ret;
+		} else {
+			return ret;
+		}
+		break;
+	default:
+		printf("WARNING:VSC crossbars programming not supported for: %x"
+					" SerDes2 Protocol.\n", serdes2_prtcl);
+		return -1;
+	}
+
+	return 0;
+}
+
+int board_early_init_r(void)
+{
+	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
+	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);
+
+	/*
+	 * Remap Boot flash + PROMJET region to caching-inhibited
+	 * so that flash can be erased properly.
+	 */
+
+	/* Flush d-cache and invalidate i-cache of any FLASH data */
+	flush_dcache();
+	invalidate_icache();
+
+	/* invalidate existing TLB entry for flash + promjet */
+	disable_tlb(flash_esel);
+
+	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
+			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			0, flash_esel, BOOKE_PAGESZ_256M, 1);
+
+	set_liodns();
+#ifdef CONFIG_SYS_DPAA_QBMAN
+	setup_portals();
+#endif
+
+	/* Configure VSC3316 and VSC3308 crossbar switches */
+	if (configure_vsc3316_3308())
+		printf("VSC:failed to configure VSC3316/3308.\n");
+	else
+		printf("VSC:VSC3316/3308 successfully configured.\n");
+
+	select_i2c_ch_pca(I2C_CH_DEFAULT);
+
+	return 0;
+}
+
+unsigned long get_board_sys_clk(void)
+{
+	u8 sysclk_conf = QIXIS_READ(brdcfg[1]);
+
+	switch ((sysclk_conf & 0x0C) >> 2) {
+	case QIXIS_CLK_100:
+		return 100000000;
+	case QIXIS_CLK_125:
+		return 125000000;
+	case QIXIS_CLK_133:
+		return 133333333;
+	}
+	return 66666666;
+}
+
+unsigned long get_board_ddr_clk(void)
+{
+	u8 ddrclk_conf = QIXIS_READ(brdcfg[1]);
+
+	switch (ddrclk_conf & 0x03) {
+	case QIXIS_CLK_100:
+		return 100000000;
+	case QIXIS_CLK_125:
+		return 125000000;
+	case QIXIS_CLK_133:
+		return 133333333;
+	}
+	return 66666666;
+}
+
+static int serdes_refclock(u8 sw, u8 sdclk)
+{
+	unsigned int clock;
+	int ret = -1;
+	u8 brdcfg4;
+
+	if (sdclk == 1) {
+		brdcfg4 = QIXIS_READ(brdcfg[4]);
+		if ((brdcfg4 & CLK_MUX_SEL_MASK) == ETH_PHY_CLK_OUT)
+			return SRDS_PLLCR0_RFCK_SEL_125;
+		else
+			clock = (sw >> 5) & 7;
+	} else
+		clock = (sw >> 6) & 3;
+
+	switch (clock) {
+	case 0:
+		ret = SRDS_PLLCR0_RFCK_SEL_100;
+		break;
+	case 1:
+		ret = SRDS_PLLCR0_RFCK_SEL_125;
+		break;
+	case 2:
+		ret = SRDS_PLLCR0_RFCK_SEL_156_25;
+		break;
+	case 3:
+		ret = SRDS_PLLCR0_RFCK_SEL_161_13;
+		break;
+	case 4:
+	case 5:
+	case 6:
+		ret = SRDS_PLLCR0_RFCK_SEL_122_88;
+		break;
+	default:
+		ret = -1;
+		break;
+	}
+
+	return ret;
+}
+
+static const char *serdes_clock_to_string(u32 clock)
+{
+	switch (clock) {
+	case SRDS_PLLCR0_RFCK_SEL_100:
+		return "100";
+	case SRDS_PLLCR0_RFCK_SEL_125:
+		return "125";
+	case SRDS_PLLCR0_RFCK_SEL_156_25:
+		return "156.25";
+	case SRDS_PLLCR0_RFCK_SEL_161_13:
+		return "161.13";
+	default:
+		return "122.88";
+	}
+}
+
+#define NUM_SRDS_BANKS	2
+
+int misc_init_r(void)
+{
+	u8 sw;
+	serdes_corenet_t *srds_regs =
+		(void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
+	u32 actual[NUM_SRDS_BANKS];
+	unsigned int i;
+	int clock;
+
+	sw = QIXIS_READ(brdcfg[2]);
+	clock = serdes_refclock(sw, 1);
+	if (clock >= 0)
+		actual[0] = clock;
+	else
+		printf("Warning: SDREFCLK1 switch setting is unsupported\n");
+
+	sw = QIXIS_READ(brdcfg[4]);
+	clock = serdes_refclock(sw, 2);
+	if (clock >= 0)
+		actual[1] = clock;
+	else
+		printf("Warning: SDREFCLK2 switch setting unsupported\n");
+
+	for (i = 0; i < NUM_SRDS_BANKS; i++) {
+		u32 pllcr0 = srds_regs->bank[i].pllcr0;
+		u32 expected = pllcr0 & SRDS_PLLCR0_RFCK_SEL_MASK;
+		if (expected != actual[i]) {
+			printf("Warning: SERDES bank %u expects reference clock"
+			       " %sMHz, but actual is %sMHz\n", i + 1,
+			       serdes_clock_to_string(expected),
+			       serdes_clock_to_string(actual[i]));
+		}
+	}
+
+	return 0;
+}
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	phys_addr_t base;
+	phys_size_t size;
+
+	ft_cpu_setup(blob, bd);
+
+	base = getenv_bootm_low();
+	size = getenv_bootm_size();
+
+	fdt_fixup_memory(blob, (u64)base, (u64)size);
+
+#ifdef CONFIG_PCI
+	pci_of_setup(blob, bd);
+#endif
+
+	fdt_fixup_liodn(blob);
+
+#ifdef CONFIG_HAS_FSL_DR_USB
+	fdt_fixup_dr_usb(blob, bd);
+#endif
+
+#ifdef CONFIG_SYS_DPAA_FMAN
+	fdt_fixup_fman_ethernet(blob);
+	fdt_fixup_board_enet(blob);
+#endif
+}