avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/board/freescale/mpc8548cds/mpc8548cds.c

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+/*
+ * Copyright 2004, 2007, 2009-2011 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_pci.h>
+#include <fsl_ddr_sdram.h>
+#include <asm/fsl_serdes.h>
+#include <miiphy.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <tsec.h>
+#include <fsl_mdio.h>
+#include <netdev.h>
+
+#include "../common/cadmus.h"
+#include "../common/eeprom.h"
+#include "../common/via.h"
+
+void local_bus_init(void);
+
+int checkboard (void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
+
+	/* PCI slot in USER bits CSR[6:7] by convention. */
+	uint pci_slot = get_pci_slot ();
+
+	uint cpu_board_rev = get_cpu_board_revision ();
+
+	puts("Board: MPC8548CDS");
+	printf(" Carrier Rev: 0x%02x, PCI Slot %d\n",
+			get_board_version(), pci_slot);
+	printf("       Daughtercard Rev: %d.%d (0x%04x)\n",
+		MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
+		MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);
+	/*
+	 * Initialize local bus.
+	 */
+	local_bus_init ();
+
+	/*
+	 * Hack TSEC 3 and 4 IO voltages.
+	 */
+	gur->tsec34ioovcr = 0xe7e0;	/*  1110 0111 1110 0xxx */
+
+	ecm->eedr = 0xffffffff;		/* clear ecm errors */
+	ecm->eeer = 0xffffffff;		/* enable ecm errors */
+	return 0;
+}
+
+/*
+ * Initialize Local Bus
+ */
+void
+local_bus_init(void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
+
+	uint clkdiv;
+	sys_info_t sysinfo;
+
+	get_sys_info(&sysinfo);
+	clkdiv = (lbc->lcrr & LCRR_CLKDIV) * 2;
+
+	gur->lbiuiplldcr1 = 0x00078080;
+	if (clkdiv == 16) {
+		gur->lbiuiplldcr0 = 0x7c0f1bf0;
+	} else if (clkdiv == 8) {
+		gur->lbiuiplldcr0 = 0x6c0f1bf0;
+	} else if (clkdiv == 4) {
+		gur->lbiuiplldcr0 = 0x5c0f1bf0;
+	}
+
+	lbc->lcrr |= 0x00030000;
+
+	asm("sync;isync;msync");
+
+	lbc->ltesr = 0xffffffff;	/* Clear LBC error interrupts */
+	lbc->lteir = 0xffffffff;	/* Enable LBC error interrupts */
+}
+
+/*
+ * Initialize SDRAM memory on the Local Bus.
+ */
+void lbc_sdram_init(void)
+{
+#if defined(CONFIG_SYS_OR2_PRELIM) && defined(CONFIG_SYS_BR2_PRELIM)
+
+	uint idx;
+	volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
+	uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
+	uint lsdmr_common;
+
+	puts("LBC SDRAM: ");
+	print_size(CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024,
+		   "\n");
+
+	/*
+	 * Setup SDRAM Base and Option Registers
+	 */
+	set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
+	set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
+	lbc->lbcr = CONFIG_SYS_LBC_LBCR;
+	asm("msync");
+
+	lbc->lsrt = CONFIG_SYS_LBC_LSRT;
+	lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
+	asm("msync");
+
+	/*
+	 * MPC8548 uses "new" 15-16 style addressing.
+	 */
+	lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
+	lsdmr_common |= LSDMR_BSMA1516;
+
+	/*
+	 * Issue PRECHARGE ALL command.
+	 */
+	lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(100);
+
+	/*
+	 * Issue 8 AUTO REFRESH commands.
+	 */
+	for (idx = 0; idx < 8; idx++) {
+		lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
+		asm("sync;msync");
+		*sdram_addr = 0xff;
+		ppcDcbf((unsigned long) sdram_addr);
+		udelay(100);
+	}
+
+	/*
+	 * Issue 8 MODE-set command.
+	 */
+	lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(100);
+
+	/*
+	 * Issue NORMAL OP command.
+	 */
+	lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
+	asm("sync;msync");
+	*sdram_addr = 0xff;
+	ppcDcbf((unsigned long) sdram_addr);
+	udelay(200);    /* Overkill. Must wait > 200 bus cycles */
+
+#endif	/* enable SDRAM init */
+}
+
+#if defined(CONFIG_PCI) || defined(CONFIG_PCI1)
+/* For some reason the Tundra PCI bridge shows up on itself as a
+ * different device.  Work around that by refusing to configure it.
+ */
+void dummy_func(struct pci_controller* hose, pci_dev_t dev, struct pci_config_table *tab) { }
+
+static struct pci_config_table pci_mpc85xxcds_config_table[] = {
+	{0x10e3, 0x0513, PCI_ANY_ID, 1, 3, PCI_ANY_ID, dummy_func, {0,0,0}},
+	{0x1106, 0x0686, PCI_ANY_ID, 1, VIA_ID, 0, mpc85xx_config_via, {0,0,0}},
+	{0x1106, 0x0571, PCI_ANY_ID, 1, VIA_ID, 1,
+		mpc85xx_config_via_usbide, {0,0,0}},
+	{0x1105, 0x3038, PCI_ANY_ID, 1, VIA_ID, 2,
+		mpc85xx_config_via_usb, {0,0,0}},
+	{0x1106, 0x3038, PCI_ANY_ID, 1, VIA_ID, 3,
+		mpc85xx_config_via_usb2, {0,0,0}},
+	{0x1106, 0x3058, PCI_ANY_ID, 1, VIA_ID, 5,
+		mpc85xx_config_via_power, {0,0,0}},
+	{0x1106, 0x3068, PCI_ANY_ID, 1, VIA_ID, 6,
+		mpc85xx_config_via_ac97, {0,0,0}},
+	{},
+};
+
+static struct pci_controller pci1_hose;
+#endif	/* CONFIG_PCI */
+
+void pci_init_board(void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	struct fsl_pci_info pci_info;
+	u32 devdisr, pordevsr, io_sel;
+	u32 porpllsr, pci_agent, pci_speed, pci_32, pci_arb, pci_clk_sel;
+	int first_free_busno = 0;
+	char buf[32];
+
+	devdisr = in_be32(&gur->devdisr);
+	pordevsr = in_be32(&gur->pordevsr);
+	porpllsr = in_be32(&gur->porpllsr);
+	io_sel = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> 19;
+
+	debug ("   pci_init_board: devdisr=%x, io_sel=%x\n", devdisr, io_sel);
+
+#ifdef CONFIG_PCI1
+	pci_speed = get_clock_freq ();	/* PCI PSPEED in [4:5] */
+	pci_32 = pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;	/* PORDEVSR[15] */
+	pci_arb = pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
+	pci_clk_sel = porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
+
+	if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
+		SET_STD_PCI_INFO(pci_info, 1);
+		set_next_law(pci_info.mem_phys,
+			law_size_bits(pci_info.mem_size), pci_info.law);
+		set_next_law(pci_info.io_phys,
+			law_size_bits(pci_info.io_size), pci_info.law);
+
+		pci_agent = fsl_setup_hose(&pci1_hose, pci_info.regs);
+		printf("PCI1: %d bit, %s MHz, %s, %s, %s (base address %lx)\n",
+			(pci_32) ? 32 : 64,
+			strmhz(buf, pci_speed),
+			pci_clk_sel ? "sync" : "async",
+			pci_agent ? "agent" : "host",
+			pci_arb ? "arbiter" : "external-arbiter",
+			pci_info.regs);
+
+		pci1_hose.config_table = pci_mpc85xxcds_config_table;
+		first_free_busno = fsl_pci_init_port(&pci_info,
+					&pci1_hose, first_free_busno);
+
+#ifdef CONFIG_PCIX_CHECK
+		if (!(pordevsr & MPC85xx_PORDEVSR_PCI1)) {
+			/* PCI-X init */
+			if (CONFIG_SYS_CLK_FREQ < 66000000)
+				printf("PCI-X will only work at 66 MHz\n");
+
+			reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
+				| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
+			pci_hose_write_config_word(hose, bus, PCIX_COMMAND, reg16);
+		}
+#endif
+	} else {
+		printf("PCI1: disabled\n");
+	}
+
+	puts("\n");
+#else
+	setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1); /* disable */
+#endif
+
+#ifdef CONFIG_PCI2
+{
+	uint pci2_clk_sel = porpllsr & 0x4000;	/* PORPLLSR[17] */
+	uint pci_dual = get_pci_dual ();	/* PCI DUAL in CM_PCI[3] */
+	if (pci_dual) {
+		printf("PCI2: 32 bit, 66 MHz, %s\n",
+			pci2_clk_sel ? "sync" : "async");
+	} else {
+		printf("PCI2: disabled\n");
+	}
+}
+#else
+	setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI2); /* disable */
+#endif /* CONFIG_PCI2 */
+
+	fsl_pcie_init_board(first_free_busno);
+}
+
+void configure_rgmii(void)
+{
+	unsigned short temp;
+
+	/* Change the resistors for the PHY */
+	/* This is needed to get the RGMII working for the 1.3+
+	 * CDS cards */
+	if (get_board_version() ==  0x13) {
+		miiphy_write(DEFAULT_MII_NAME,
+				TSEC1_PHY_ADDR, 29, 18);
+
+		miiphy_read(DEFAULT_MII_NAME,
+				TSEC1_PHY_ADDR, 30, &temp);
+
+		temp = (temp & 0xf03f);
+		temp |= 2 << 9;		/* 36 ohm */
+		temp |= 2 << 6;		/* 39 ohm */
+
+		miiphy_write(DEFAULT_MII_NAME,
+				TSEC1_PHY_ADDR, 30, temp);
+
+		miiphy_write(DEFAULT_MII_NAME,
+				TSEC1_PHY_ADDR, 29, 3);
+
+		miiphy_write(DEFAULT_MII_NAME,
+				TSEC1_PHY_ADDR, 30, 0x8000);
+	}
+
+	return;
+}
+
+int board_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_TSEC_ENET
+	struct fsl_pq_mdio_info mdio_info;
+	struct tsec_info_struct tsec_info[4];
+	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);
+	num++;
+#endif
+#ifdef CONFIG_TSEC3
+	/* initialize TSEC3 only if Carrier is 1.3 or above on CDS */
+	if (get_board_version() >= 0x13) {
+		SET_STD_TSEC_INFO(tsec_info[num], 3);
+		tsec_info[num].interface = PHY_INTERFACE_MODE_RGMII_ID;
+		num++;
+	}
+#endif
+#ifdef CONFIG_TSEC4
+	/* initialize TSEC4 only if Carrier is 1.3 or above on CDS */
+	if (get_board_version() >= 0x13) {
+		SET_STD_TSEC_INFO(tsec_info[num], 4);
+		tsec_info[num].interface = PHY_INTERFACE_MODE_RGMII_ID;
+		num++;
+	}
+#endif
+
+	if (!num) {
+		printf("No TSECs initialized\n");
+
+		return 0;
+	}
+
+	mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
+	mdio_info.name = DEFAULT_MII_NAME;
+	fsl_pq_mdio_init(bis, &mdio_info);
+
+	tsec_eth_init(bis, tsec_info, num);
+	configure_rgmii();
+#endif
+
+	return pci_eth_init(bis);
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void ft_pci_setup(void *blob, bd_t *bd)
+{
+	FT_FSL_PCI_SETUP;
+}
+#endif