85xx: Add P2020DS support

The patch adds support for P2020DS reference platform.
DDR3 interface uses hard-coded initialization rather than SPD
for now and was tested at 667Mhz. Some PIXIS register
definitions and associated code sections need to be fixed.
TSEC1/2/3, NOR flash, MAC/SYS ID EEPROM, PCIE1/2/3 are all
tested under u-boot.

Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Travis Wheatley <Travis.Wheatley@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 634 insertions, 0 deletions

diff --git a/board/freescale/p2020ds/p2020ds.c b/board/freescale/p2020ds/p2020ds.c
new file mode 100644
index 0000000000..6b72d61426
--- /dev/null
+++ b/board/freescale/p2020ds/p2020ds.c
@@ -0,0 +1,634 @@
+/*
+ * Copyright 2007-2009 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 <pci.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/cache.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_pci.h>
+#include <asm/fsl_ddr_sdram.h>
+#include <asm/io.h>
+#include <miiphy.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <tsec.h>
+#include <asm/fsl_law.h>
+#include <asm/mp.h>
+
+#include "../common/pixis.h"
+#include "../common/sgmii_riser.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+phys_size_t fixed_sdram(void);
+
+int checkboard(void)
+{
+	puts("Board: P2020DS ");
+#ifdef CONFIG_PHYS_64BIT
+	puts("(36-bit addrmap) ");
+#endif
+	printf("Sys ID: 0x%02x, "
+		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x\n",
+		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
+		in8(PIXIS_BASE + PIXIS_PVER));
+	return 0;
+}
+
+phys_size_t initdram(int board_type)
+{
+	phys_size_t dram_size = 0;
+
+	puts("Initializing....");
+
+#ifdef CONFIG_SPD_EEPROM
+	dram_size = fsl_ddr_sdram();
+#else
+	dram_size = fixed_sdram();
+
+	if (set_ddr_laws(CONFIG_SYS_DDR_SDRAM_BASE,
+			 dram_size,
+			 LAW_TRGT_IF_DDR) < 0) {
+		printf("ERROR setting Local Access Windows for DDR\n");
+		return 0;
+	};
+#endif
+	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+	dram_size *= 0x100000;
+
+	puts("    DDR: ");
+	return dram_size;
+}
+
+#if !defined(CONFIG_SPD_EEPROM)
+/*
+ * Fixed sdram init -- doesn't use serial presence detect.
+ */
+
+phys_size_t fixed_sdram(void)
+{
+	volatile ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
+	uint d_init;
+
+	ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
+	ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
+	ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
+	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_CTRL;
+	ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
+	ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
+	ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
+	ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL2;
+	ddr->ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CNTL;
+	ddr->ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CNTL;
+	ddr->ddr_cdr1 = CONFIG_SYS_DDR_CDR1;
+	ddr->timing_cfg_4 = CONFIG_SYS_DDR_TIMING_4;
+	ddr->timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5;
+
+	if (!strcmp("performance", getenv("perf_mode"))) {
+		/* Performance Mode Values */
+
+		ddr->cs1_config = CONFIG_SYS_DDR_CS1_CONFIG_PERF;
+		ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS_PERF;
+		ddr->cs1_bnds = CONFIG_SYS_DDR_CS1_BNDS_PERF;
+		ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1_PERF;
+		ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2_PERF;
+
+		asm("sync;isync");
+
+		udelay(500);
+
+		ddr->sdram_cfg = CONFIG_SYS_DDR_CONTROL_PERF;
+	} else {
+		/* Stable Mode Values */
+
+		ddr->cs1_config = CONFIG_SYS_DDR_CS1_CONFIG;
+		ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
+		ddr->cs1_bnds = CONFIG_SYS_DDR_CS1_BNDS;
+		ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
+		ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
+
+		/* ECC will be assumed in stable mode */
+		ddr->err_int_en = CONFIG_SYS_DDR_ERR_INT_EN;
+		ddr->err_disable = CONFIG_SYS_DDR_ERR_DIS;
+		ddr->err_sbe = CONFIG_SYS_DDR_SBE;
+
+		asm("sync;isync");
+
+		udelay(500);
+
+		ddr->sdram_cfg = CONFIG_SYS_DDR_CONTROL;
+	}
+
+#if defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+	d_init = 1;
+	debug("DDR - 1st controller: memory initializing\n");
+	/*
+	 * Poll until memory is initialized.
+	 * 512 Meg at 400 might hit this 200 times or so.
+	 */
+	while ((ddr->sdram_cfg_2 & (d_init << 4)) != 0)
+		udelay(1000);
+	debug("DDR: memory initialized\n\n");
+	asm("sync; isync");
+	udelay(500);
+#endif
+
+	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+}
+
+#endif
+
+#ifdef CONFIG_PCIE1
+static struct pci_controller pcie1_hose;
+#endif
+
+#ifdef CONFIG_PCIE2
+static struct pci_controller pcie2_hose;
+#endif
+
+#ifdef CONFIG_PCIE3
+static struct pci_controller pcie3_hose;
+#endif
+
+int first_free_busno = 0;
+
+#ifdef CONFIG_PCI
+void pci_init_board(void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	uint devdisr = gur->devdisr;
+	uint io_sel = (gur->pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> 19;
+	uint host_agent = (gur->porbmsr & MPC85xx_PORBMSR_HA) >> 16;
+
+	volatile ccsr_fsl_pci_t *pci;
+	struct pci_controller *hose;
+	int pcie_ep, pcie_configured;
+	struct pci_region *r;
+/*		u32 temp32; */
+
+	debug("   pci_init_board: devdisr=%x, io_sel=%x, host_agent=%x\n",
+			devdisr, io_sel, host_agent);
+
+	if (!(gur->pordevsr & MPC85xx_PORDEVSR_SGMII2_DIS))
+		printf("    eTSEC2 is in sgmii mode.\n");
+	if (!(gur->pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS))
+		printf("    eTSEC3 is in sgmii mode.\n");
+
+#ifdef CONFIG_PCIE2
+	pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE2_ADDR;
+	hose = &pcie2_hose;
+	pcie_ep = (host_agent == 2) || (host_agent == 4) ||
+		  (host_agent == 6) || (host_agent == 0);
+	pcie_configured = (io_sel == 0x2) || (io_sel == 0xe);
+	r = hose->regions;
+
+	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE2)) {
+		printf("\n    PCIE2 connected to ULI as %s (base addr %x)",
+				pcie_ep ? "End Point" : "Root Complex",
+				(uint)pci);
+		if (pci->pme_msg_det) {
+			pci->pme_msg_det = 0xffffffff;
+			debug(" with errors.  Clearing.  Now 0x%08x",
+				pci->pme_msg_det);
+		}
+		printf("\n");
+
+		/* inbound */
+		r += fsl_pci_setup_inbound_windows(r);
+
+		/* outbound memory */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE2_MEM_BUS,
+				CONFIG_SYS_PCIE2_MEM_PHYS,
+				CONFIG_SYS_PCIE2_MEM_SIZE,
+				PCI_REGION_MEM);
+
+		/* outbound io */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE2_IO_BUS,
+				CONFIG_SYS_PCIE2_IO_PHYS,
+				CONFIG_SYS_PCIE2_IO_SIZE,
+				PCI_REGION_IO);
+
+		hose->region_count = r - hose->regions;
+		hose->first_busno = first_free_busno;
+		pci_setup_indirect(hose, (int)&pci->cfg_addr,
+				  (int)&pci->cfg_data);
+
+		fsl_pci_init(hose);
+		first_free_busno = hose->last_busno+1;
+		printf("    PCIE2 on bus %02x - %02x\n",
+			hose->first_busno, hose->last_busno);
+
+		/*
+		 * The workaround doesn't work on p2020 because the location
+		 * we try and read isn't valid on p2020, fix this later
+		 */
+#if 0
+		/*
+		 * Activate ULI1575 legacy chip by performing a fake
+		 * memory access.  Needed to make ULI RTC work.
+		 * Device 1d has the first on-board memory BAR.
+		 */
+
+		pci_hose_read_config_dword(hose, PCI_BDF(2, 0x1d, 0),
+				PCI_BASE_ADDRESS_1, &temp32);
+		if (temp32 >= CONFIG_SYS_PCIE3_MEM_BUS) {
+			void *p = pci_mem_to_virt(PCI_BDF(2, 0x1d, 0),
+							temp32, 4, 0);
+			debug(" uli1575 read to %p\n", p);
+			in_be32(p);
+		}
+#endif
+	} else {
+		printf("    PCIE2: disabled\n");
+	}
+#else
+	gur->devdisr |= MPC85xx_DEVDISR_PCIE2; /* disable */
+#endif
+
+#ifdef CONFIG_PCIE3
+	pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE3_ADDR;
+	hose = &pcie3_hose;
+	pcie_ep = (host_agent == 0) || (host_agent == 3) ||
+		(host_agent == 5) || (host_agent == 6);
+	pcie_configured = (io_sel == 0x2) || (io_sel == 0x4);
+	r = hose->regions;
+
+	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE3)) {
+		printf("\n    PCIE3 connected to Slot 1 as %s (base addr %x)",
+				pcie_ep ? "End Point" : "Root Complex",
+				(uint)pci);
+		if (pci->pme_msg_det) {
+			pci->pme_msg_det = 0xffffffff;
+			debug(" with errors.  Clearing.  Now 0x%08x",
+				pci->pme_msg_det);
+		}
+		printf("\n");
+
+		/* inbound */
+		r += fsl_pci_setup_inbound_windows(r);
+
+		/* outbound memory */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE3_MEM_BUS,
+				CONFIG_SYS_PCIE3_MEM_PHYS,
+				CONFIG_SYS_PCIE3_MEM_SIZE,
+				PCI_REGION_MEM);
+
+		/* outbound io */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE3_IO_BUS,
+				CONFIG_SYS_PCIE3_IO_PHYS,
+				CONFIG_SYS_PCIE3_IO_SIZE,
+				PCI_REGION_IO);
+
+		hose->region_count = r - hose->regions;
+		hose->first_busno = first_free_busno;
+		pci_setup_indirect(hose, (int)&pci->cfg_addr,
+				  (int)&pci->cfg_data);
+
+		fsl_pci_init(hose);
+
+		first_free_busno = hose->last_busno+1;
+		printf("    PCIE3 on bus %02x - %02x\n",
+				hose->first_busno, hose->last_busno);
+
+	} else {
+		printf("    PCIE3: disabled\n");
+	}
+#else
+	gur->devdisr |= MPC85xx_DEVDISR_PCIE3; /* disable */
+#endif
+
+#ifdef CONFIG_PCIE1
+	pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE1_ADDR;
+	hose = &pcie1_hose;
+	pcie_ep = (host_agent <= 1) || (host_agent == 4) || (host_agent == 5);
+	pcie_configured  = (io_sel & 6) || (io_sel == 0xE) || (io_sel == 0xF);
+	r = hose->regions;
+
+	if (pcie_configured && !(devdisr & MPC85xx_DEVDISR_PCIE)) {
+		printf("\n    PCIE1 connected to Slot 2 as %s (base addr %x)",
+				pcie_ep ? "End Point" : "Root Complex",
+				(uint)pci);
+		if (pci->pme_msg_det) {
+			pci->pme_msg_det = 0xffffffff;
+			debug(" with errors.  Clearing.  Now 0x%08x",
+				pci->pme_msg_det);
+		}
+		printf("\n");
+
+		/* inbound */
+		r += fsl_pci_setup_inbound_windows(r);
+
+		/* outbound memory */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE1_MEM_BUS,
+				CONFIG_SYS_PCIE1_MEM_PHYS,
+				CONFIG_SYS_PCIE1_MEM_SIZE,
+				PCI_REGION_MEM);
+
+		/* outbound io */
+		pci_set_region(r++,
+				CONFIG_SYS_PCIE1_IO_BUS,
+				CONFIG_SYS_PCIE1_IO_PHYS,
+				CONFIG_SYS_PCIE1_IO_SIZE,
+				PCI_REGION_IO);
+
+		hose->region_count = r - hose->regions;
+		hose->first_busno = first_free_busno;
+
+		pci_setup_indirect(hose, (int)&pci->cfg_addr,
+				  (int)&pci->cfg_data);
+
+		fsl_pci_init(hose);
+
+		first_free_busno = hose->last_busno+1;
+		printf("    PCIE1 on bus %02x - %02x\n",
+			hose->first_busno, hose->last_busno);
+
+	} else {
+		printf("    PCIE1: disabled\n");
+	}
+#else
+	gur->devdisr |= MPC85xx_DEVDISR_PCIE; /* disable */
+#endif
+}
+#endif
+
+int board_early_init_r(void)
+{
+	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
+	const u8 flash_esel = 2;
+
+	/*
+	 * 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);
+
+	return 0;
+}
+
+#ifdef CONFIG_GET_CLK_FROM_ICS307
+/* decode S[0-2] to Output Divider (OD) */
+static unsigned char ics307_S_to_OD[] = {
+	10, 2, 8, 4, 5, 7, 3, 6
+};
+
+/* Calculate frequency being generated by ICS307-02 clock chip based upon
+ * the control bytes being programmed into it. */
+/* XXX: This function should probably go into a common library */
+static unsigned long
+ics307_clk_freq(unsigned char cw0, unsigned char cw1, unsigned char cw2)
+{
+	const unsigned long InputFrequency = CONFIG_ICS307_REFCLK_HZ;
+	unsigned long VDW = ((cw1 << 1) & 0x1FE) + ((cw2 >> 7) & 1);
+	unsigned long RDW = cw2 & 0x7F;
+	unsigned long OD = ics307_S_to_OD[cw0 & 0x7];
+	unsigned long freq;
+
+	/* CLK1Frequency = InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD) */
+
+	/* cw0:  C1 C0 TTL F1 F0 S2 S1 S0
+	 * cw1:  V8 V7 V6 V5 V4 V3 V2 V1
+	 * cw2:  V0 R6 R5 R4 R3 R2 R1 R0
+	 *
+	 * R6:R0 = Reference Divider Word (RDW)
+	 * V8:V0 = VCO Divider Word (VDW)
+	 * S2:S0 = Output Divider Select (OD)
+	 * F1:F0 = Function of CLK2 Output
+	 * TTL = duty cycle
+	 * C1:C0 = internal load capacitance for cyrstal
+	 */
+
+	/* Adding 1 to get a "nicely" rounded number, but this needs
+	 * more tweaking to get a "properly" rounded number. */
+
+	freq = 1 + (InputFrequency * 2 * (VDW + 8) / ((RDW + 2) * OD));
+
+	debug("ICS307: CW[0-2]: %02X %02X %02X => %lu Hz\n", cw0, cw1, cw2,
+			freq);
+	return freq;
+}
+
+unsigned long get_board_sys_clk(ulong dummy)
+{
+	return gd->bus_clk;
+}
+
+unsigned long get_board_ddr_clk(ulong dummy)
+{
+	return gd->mem_clk;
+}
+
+unsigned long
+calculate_board_sys_clk(ulong dummy)
+{
+	ulong val;
+	val = ics307_clk_freq(
+	    in8(PIXIS_BASE + PIXIS_VSYSCLK0),
+	    in8(PIXIS_BASE + PIXIS_VSYSCLK1),
+	    in8(PIXIS_BASE + PIXIS_VSYSCLK2));
+	debug("sysclk val = %lu\n", val);
+	return val;
+}
+
+unsigned long
+calculate_board_ddr_clk(ulong dummy)
+{
+	ulong val;
+	val = ics307_clk_freq(
+	    in8(PIXIS_BASE + PIXIS_VDDRCLK0),
+	    in8(PIXIS_BASE + PIXIS_VDDRCLK1),
+	    in8(PIXIS_BASE + PIXIS_VDDRCLK2));
+	debug("ddrclk val = %lu\n", val);
+	return val;
+}
+#else
+unsigned long get_board_sys_clk(ulong dummy)
+{
+	u8 i;
+	ulong val = 0;
+
+	i = in8(PIXIS_BASE + PIXIS_SPD);
+	i &= 0x07;
+
+	switch (i) {
+		case 0:
+			val = 33333333;
+			break;
+		case 1:
+			val = 40000000;
+			break;
+		case 2:
+			val = 50000000;
+			break;
+		case 3:
+			val = 66666666;
+			break;
+		case 4:
+			val = 83333333;
+			break;
+		case 5:
+			val = 100000000;
+			break;
+		case 6:
+			val = 133333333;
+			break;
+		case 7:
+			val = 166666666;
+			break;
+	}
+
+	return val;
+}
+
+unsigned long get_board_ddr_clk(ulong dummy)
+{
+	u8 i;
+	ulong val = 0;
+
+	i = in8(PIXIS_BASE + PIXIS_SPD);
+	i &= 0x38;
+	i >>= 3;
+
+	switch (i) {
+		case 0:
+			val = 33333333;
+			break;
+		case 1:
+			val = 40000000;
+			break;
+		case 2:
+			val = 50000000;
+			break;
+		case 3:
+			val = 66666666;
+			break;
+		case 4:
+			val = 83333333;
+			break;
+		case 5:
+			val = 100000000;
+			break;
+		case 6:
+			val = 133333333;
+			break;
+		case 7:
+			val = 166666666;
+			break;
+	}
+	return val;
+}
+#endif
+
+#ifdef CONFIG_TSEC_ENET
+int board_eth_init(bd_t *bis)
+{
+	struct tsec_info_struct tsec_info[4];
+	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	int num = 0;
+
+#ifdef CONFIG_TSEC1
+	SET_STD_TSEC_INFO(tsec_info[num], 1);
+	num++;
+#endif
+#ifdef CONFIG_TSEC2
+	SET_STD_TSEC_INFO(tsec_info[num], 2);
+	if (!(gur->pordevsr & MPC85xx_PORDEVSR_SGMII2_DIS))
+		tsec_info[num].flags |= TSEC_SGMII;
+	num++;
+#endif
+#ifdef CONFIG_TSEC3
+	SET_STD_TSEC_INFO(tsec_info[num], 3);
+	if (!(gur->pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS))
+		tsec_info[num].flags |= TSEC_SGMII;
+	num++;
+#endif
+
+	if (!num) {
+		printf("No TSECs initialized\n");
+
+		return 0;
+	}
+
+#ifdef CONFIG_FSL_SGMII_RISER
+	fsl_sgmii_riser_init(tsec_info, num);
+#endif
+
+	tsec_eth_init(bis, tsec_info, num);
+
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+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_PCIE3
+	ft_fsl_pci_setup(blob, "pci0", &pcie3_hose);
+#endif
+#ifdef CONFIG_PCIE2
+	ft_fsl_pci_setup(blob, "pci1", &pcie2_hose);
+#endif
+#ifdef CONFIG_PCIE1
+	ft_fsl_pci_setup(blob, "pci2", &pcie1_hose);
+#endif
+#ifdef CONFIG_FSL_SGMII_RISER
+	fsl_sgmii_riser_fdt_fixup(blob);
+#endif
+}
+#endif
+
+#ifdef CONFIG_MP
+void board_lmb_reserve(struct lmb *lmb)
+{
+	cpu_mp_lmb_reserve(lmb);
+}
+#endif