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/xes/xpedite517x/Kconfig

@@ -0,0 +1,12 @@
+if TARGET_XPEDITE517X
+
+config SYS_BOARD
+	default "xpedite517x"
+
+config SYS_VENDOR
+	default "xes"
+
+config SYS_CONFIG_NAME
+	default "xpedite517x"
+
+endif

u-boot/board/xes/xpedite517x/MAINTAINERS

@@ -0,0 +1,6 @@
+XPEDITE517X BOARD
+M:	Peter Tyser <ptyser@xes-inc.com>
+S:	Maintained
+F:	board/xes/xpedite517x/
+F:	include/configs/xpedite517x.h
+F:	configs/xpedite517x_defconfig

u-boot/board/xes/xpedite517x/Makefile

@@ -0,0 +1,10 @@
+#
+# (C) Copyright 2001
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= xpedite517x.o
+obj-y	+= ddr.o
+obj-y	+= law.o

u-boot/board/xes/xpedite517x/ddr.c

@@ -0,0 +1,124 @@
+/*
+ * Copyright 2009 Extreme Engineering Solutions, Inc.
+ * Copyright 2007-2008 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
+
+void get_spd(ddr2_spd_eeprom_t *spd, u8 i2c_address)
+{
+	i2c_read(i2c_address, SPD_EEPROM_OFFSET, 2, (uchar *)spd,
+		sizeof(ddr2_spd_eeprom_t));
+}
+
+/*
+ * There are four board-specific SDRAM timing parameters which must be
+ * calculated based on the particular PCB artwork.  These are:
+ *   1.) CPO (Read Capture Delay)
+ *           - TIMING_CFG_2 register
+ *           Source: Calculation based on board trace lengths and
+ *                   chip-specific internal delays.
+ *   2.) WR_DATA_DELAY (Write Command to Data Strobe Delay)
+ *           - TIMING_CFG_2 register
+ *           Source: Calculation based on board trace lengths.
+ *                   Unless clock and DQ lanes are very different
+ *                   lengths (>2"), this should be set to the nominal value
+ *                   of 1/2 clock delay.
+ *   3.) CLK_ADJUST (Clock and Addr/Cmd alignment control)
+ *           - DDR_SDRAM_CLK_CNTL register
+ *           Source: Signal Integrity Simulations
+ *   4.) 2T Timing on Addr/Ctl
+ *           - TIMING_CFG_2 register
+ *           Source: Signal Integrity Simulations
+ *           Usually only needed with heavy load/very high speed (>DDR2-800)
+ *
+ *     PCB routing on the XPedite5170 is nearly identical to the XPedite5370
+ *     so we use the XPedite5370 settings as a basis for the XPedite5170.
+ */
+
+typedef struct board_memctl_options {
+	uint16_t datarate_mhz_low;
+	uint16_t datarate_mhz_high;
+	uint8_t clk_adjust;
+	uint8_t cpo_override;
+	uint8_t write_data_delay;
+} board_memctl_options_t;
+
+static struct board_memctl_options bopts_ctrl[][2] = {
+	{
+		/* Controller 0 */
+		{
+			/* DDR2 600/667 */
+			.datarate_mhz_low	= 500,
+			.datarate_mhz_high	= 750,
+			.clk_adjust		= 5,
+			.cpo_override		= 8,
+			.write_data_delay	= 2,
+		},
+		{
+			/* DDR2 800 */
+			.datarate_mhz_low	= 750,
+			.datarate_mhz_high	= 850,
+			.clk_adjust		= 5,
+			.cpo_override		= 9,
+			.write_data_delay	= 2,
+		},
+	},
+	{
+		/* Controller 1 */
+		{
+			/* DDR2 600/667 */
+			.datarate_mhz_low	= 500,
+			.datarate_mhz_high	= 750,
+			.clk_adjust		= 5,
+			.cpo_override		= 7,
+			.write_data_delay	= 2,
+		},
+		{
+			/* DDR2 800 */
+			.datarate_mhz_low	= 750,
+			.datarate_mhz_high	= 850,
+			.clk_adjust		= 5,
+			.cpo_override		= 8,
+			.write_data_delay	= 2,
+		},
+	},
+};
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+			dimm_params_t *pdimm,
+			unsigned int ctrl_num)
+{
+	struct board_memctl_options *bopts = bopts_ctrl[ctrl_num];
+	sys_info_t sysinfo;
+	int i;
+	unsigned int datarate;
+
+	get_sys_info(&sysinfo);
+	datarate = get_ddr_freq(0) / 1000000;
+
+	for (i = 0; i < ARRAY_SIZE(bopts_ctrl[ctrl_num]); i++) {
+		if ((bopts[i].datarate_mhz_low <= datarate) &&
+		    (bopts[i].datarate_mhz_high >= datarate)) {
+			debug("controller %d:\n", ctrl_num);
+			debug(" clk_adjust = %d\n", bopts[i].clk_adjust);
+			debug(" cpo = %d\n", bopts[i].cpo_override);
+			debug(" write_data_delay = %d\n",
+				bopts[i].write_data_delay);
+			popts->clk_adjust = bopts[i].clk_adjust;
+			popts->cpo_override = bopts[i].cpo_override;
+			popts->write_data_delay = bopts[i].write_data_delay;
+		}
+	}
+
+	/*
+	 * Factors to consider for half-strength driver enable:
+	 *	- number of DIMMs installed
+	 */
+	popts->half_strength_driver_enable = 0;
+}

u-boot/board/xes/xpedite517x/law.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/fsl_law.h>
+#include <asm/mmu.h>
+
+/*
+ * Notes:
+ *    CCSRBAR don't need a configured Local Access Window.
+ *    If flash is 8M at default position (last 8M), no LAW needed.
+ */
+
+struct law_entry law_table[] = {
+	SET_LAW(CONFIG_SYS_FLASH_BASE2, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
+#ifdef CONFIG_SYS_NAND_BASE
+	/* NAND LAW covers 2 NAND flashes */
+	SET_LAW(CONFIG_SYS_NAND_BASE, LAW_SIZE_512K, LAW_TRGT_IF_LBC),
+#endif
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);

u-boot/board/xes/xpedite517x/xpedite517x.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2009 Extreme Engineering Solutions, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <fsl_ddr_sdram.h>
+#include <asm/mmu.h>
+#include <asm/io.h>
+#include <fdt_support.h>
+#include <pca953x.h>
+#include "../common/fsl_8xxx_misc.h"
+
+#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_PCI)
+extern void ft_board_pci_setup(void *blob, bd_t *bd);
+#endif
+
+/*
+ * Print out which flash was booted from and if booting from the 2nd flash,
+ * swap flash chip selects to maintain consistent flash numbering/addresses.
+ */
+static void flash_cs_fixup(void)
+{
+	int flash_sel;
+
+	/*
+	 * Print boot dev and swap flash flash chip selects if booted from 2nd
+	 * flash.  Swapping chip selects presents user with a common memory
+	 * map regardless of which flash was booted from.
+	 */
+	flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
+			CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
+	printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
+
+	if (flash_sel) {
+		set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
+		set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
+
+		set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
+		set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
+	}
+}
+
+int board_early_init_r(void)
+{
+	/* Initialize PCA9557 devices */
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
+	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
+
+	flash_cs_fixup();
+
+	return 0;
+}
+
+phys_size_t initdram(int board_type)
+{
+	phys_size_t dram_size = fsl_ddr_sdram();
+
+#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
+	/* Initialize and enable DDR ECC */
+	ddr_enable_ecc(dram_size);
+#endif
+
+	return dram_size;
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+#ifdef CONFIG_PCI
+	ft_board_pci_setup(blob, bd);
+#endif
+	ft_cpu_setup(blob, bd);
+
+	return 0;
+}
+#endif