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/xpedite537x/Kconfig

@@ -0,0 +1,12 @@
+if TARGET_XPEDITE537X
+
+config SYS_BOARD
+	default "xpedite537x"
+
+config SYS_VENDOR
+	default "xes"
+
+config SYS_CONFIG_NAME
+	default "xpedite537x"
+
+endif

u-boot/board/xes/xpedite537x/MAINTAINERS

@@ -0,0 +1,6 @@
+XPEDITE537X BOARD
+M:	Peter Tyser <ptyser@xes-inc.com>
+S:	Maintained
+F:	board/xes/xpedite537x/
+F:	include/configs/xpedite537x.h
+F:	configs/xpedite537x_defconfig

u-boot/board/xes/xpedite537x/Makefile

@@ -0,0 +1,13 @@
+#
+# Copyright 2008 Extreme Engineering Solutions, Inc.
+# Copyright 2007 Freescale Semiconductor, Inc.
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= xpedite537x.o
+obj-y	+= ddr.o
+obj-y	+= law.o
+obj-y	+= tlb.o

u-boot/board/xes/xpedite537x/ddr.c

@@ -0,0 +1,234 @@
+/*
+ * Copyright 2008 Extreme Engineering Solutions, Inc.
+ * Copyright 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)
+ *
+ *     ====== XPedite5370 DDR2-600 read delay calculations ======
+ *
+ *     See Freescale's App Note AN2583 as refrence.  This document also
+ *     contains the chip-specific delays for 8548E, 8572, etc.
+ *
+ *     For MPC8572E
+ *     Minimum chip delay (Ch 0): 1.372ns
+ *     Maximum chip delay (Ch 0): 2.914ns
+ *     Minimum chip delay (Ch 1): 1.220ns
+ *     Maximum chip delay (Ch 1): 2.595ns
+ *
+ *     CLK adjust = 5 (from simulations) = 5/8* 3.33ns = 2080ps
+ *
+ *     Minimum delay calc (Ch 0):
+ *     clock prop - dram skew + min dqs prop delay + clk_adjust + min chip dly
+ *     2.3" * 180 - 400ps     + 1.9" * 180         + 2080ps     + 1372ps
+ *                                                 = 3808ps
+ *                                                 = 3.808ns
+ *
+ *     Maximum delay calc (Ch 0):
+ *     clock prop + dram skew + max dqs prop delay + clk_adjust + max chip dly
+ *     2.3" * 180 + 400ps     + 2.4" * 180         + 2080ps     + 2914ps
+ *                                                 = 6240ps
+ *                                                 = 6.240ns
+ *
+ *     Minimum delay calc (Ch 1):
+ *     clock prop - dram skew + min dqs prop delay + clk_adjust + min chip dly
+ *     1.46" * 180- 400ps     + 0.7" * 180         + 2080ps     + 1220ps
+ *                                                 = 3288ps
+ *                                                 = 3.288ns
+ *
+ *     Maximum delay calc (Ch 1):
+ *     clock prop + dram skew + max dqs prop delay + clk_adjust + min chip dly
+ *     1.46" * 180+ 400ps     + 1.1" * 180         + 2080ps     + 2595ps
+ *                                                 = 5536ps
+ *                                                 = 5.536ns
+ *
+ *     Ch.0: 3.808ns to 6.240ns additional delay needed  (pick 5ns as target)
+ *              This is 1.5 clock cycles, pick CPO = READ_LAT + 3/2 (0x8)
+ *     Ch.1: 3.288ns to 5.536ns additional delay needed  (pick 4.4ns as target)
+ *              This is 1.32 clock cycles, pick CPO = READ_LAT + 5/4 (0x7)
+ *
+ *
+ *     ====== XPedite5370 DDR2-800 read delay calculations ======
+ *
+ *     See Freescale's App Note AN2583 as refrence.  This document also
+ *     contains the chip-specific delays for 8548E, 8572, etc.
+ *
+ *     For MPC8572E
+ *     Minimum chip delay (Ch 0): 1.372ns
+ *     Maximum chip delay (Ch 0): 2.914ns
+ *     Minimum chip delay (Ch 1): 1.220ns
+ *     Maximum chip delay (Ch 1): 2.595ns
+ *
+ *     CLK adjust = 5 (from simulations) = 5/8* 2.5ns = 1563ps
+ *
+ *     Minimum delay calc (Ch 0):
+ *     clock prop - dram skew + min dqs prop delay + clk_adjust + min chip dly
+ *     2.3" * 180 - 350ps     + 1.9" * 180         + 1563ps     + 1372ps
+ *                                                 = 3341ps
+ *                                                 = 3.341ns
+ *
+ *     Maximum delay calc (Ch 0):
+ *     clock prop + dram skew + max dqs prop delay + clk_adjust + max chip dly
+ *     2.3" * 180 + 350ps     + 2.4" * 180         + 1563ps     + 2914ps
+ *                                                 = 5673ps
+ *                                                 = 5.673ns
+ *
+ *     Minimum delay calc (Ch 1):
+ *     clock prop - dram skew + min dqs prop delay + clk_adjust + min chip dly
+ *     1.46" * 180- 350ps     + 0.7" * 180         + 1563ps     + 1220ps
+ *                                                 = 2822ps
+ *                                                 = 2.822ns
+ *
+ *     Maximum delay calc (Ch 1):
+ *     clock prop + dram skew + max dqs prop delay + clk_adjust + min chip dly
+ *     1.46" * 180+ 350ps     + 1.1" * 180         + 1563ps     + 2595ps
+ *                                                 = 4968ps
+ *                                                 = 4.968ns
+ *
+ *     Ch.0: 3.341ns to 5.673ns additional delay needed  (pick 4.5ns as target)
+ *              This is 1.8 clock cycles, pick CPO = READ_LAT + 7/4 (0x9)
+ *     Ch.1: 2.822ns to 4.968ns additional delay needed  (pick 3.9ns as target)
+ *              This is 1.56 clock cycles, pick CPO = READ_LAT + 3/2 (0x8)
+ *
+ * Write latency (WR_DATA_DELAY) is calculated by doing the following:
+ *
+ *      The DDR SDRAM specification requires DQS be received no sooner than
+ *      75% of an SDRAM clock period—and no later than 125% of a clock
+ *      period—from the capturing clock edge of the command/address at the
+ *      SDRAM.
+ *
+ * Based on the above tracelengths, the following are calculated:
+ *      Ch. 0 8572 to DRAM propagation (DQ lanes) : 1.9" * 180 =  0.342ns
+ *      Ch. 0 8572 to DRAM propagation (CLKs) :     2.3" * 180 =  0.414ns
+ *      Ch. 1 8572 to DRAM propagation (DQ lanes) : 0.7" * 180 =  0.126ns
+ *      Ch. 1 8572 to DRAM propagation (CLKs   ) : 1.47" * 180 =  0.264ns
+ *
+ * Difference in arrival time CLK vs. DQS:
+ *      Ch. 0 0.072ns
+ *      Ch. 1 0.138ns
+ *
+ *      Both of these values are much less than 25% of the clock
+ *      period at DDR2-600 or DDR2-800, so no additional delay is needed over
+ *      the 1/2 cycle which normally aligns the first DQS transition
+ *      exactly WL (CAS latency minus one cycle) after the CAS strobe.
+ *      See Figure 9-53 in MPC8572E manual: "1/2 delay" in Freescale's
+ *      terminology corresponds to exactly one clock period delay after
+ *      the CAS strobe. (due to the fact that the "delay" is referenced
+ *      from the *falling* edge of the CLK, just after the rising edge
+ *      which the CAS strobe is latched on.
+ */
+
+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 = sysinfo.freq_ddrbus / 1000 / 1000;
+
+	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/xpedite537x/law.c

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2008 Extreme Engineering Solutions, Inc.
+ * 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 and L2-as-SRAM 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),
+	SET_LAW(CONFIG_SYS_NAND_BASE, LAW_SIZE_1M, LAW_TRGT_IF_LBC),
+};
+
+int num_law_entries = ARRAY_SIZE(law_table);

u-boot/board/xes/xpedite537x/tlb.c

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2008 Extreme Engineering Solutions, Inc.
+ * 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/mmu.h>
+
+struct fsl_e_tlb_entry tlb_table[] = {
+	/* TLB 0 - for temp stack in cache */
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR, CONFIG_SYS_INIT_RAM_ADDR,
+		MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
+		CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024,
+		MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
+		CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024,
+		MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		0, 0, BOOKE_PAGESZ_4K, 0),
+	SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
+		CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024,
+		MAS3_SX|MAS3_SW|MAS3_SR, 0,
+		0, 0, BOOKE_PAGESZ_4K, 0),
+
+	/* W**G* - NOR flashes */
+	/* This will be changed to *I*G* after relocation to RAM. */
+	SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE2, CONFIG_SYS_FLASH_BASE2,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_W|MAS2_G,
+		0, 0, BOOKE_PAGESZ_256M, 1),
+
+	/* *I*G* - CCSRBAR */
+	SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 1, BOOKE_PAGESZ_1M, 1),
+
+	/* *I*G* - NAND flash */
+	SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 2, BOOKE_PAGESZ_1M, 1),
+
+	/* **M** - Boot page for secondary processors */
+	SET_TLB_ENTRY(1, CONFIG_BPTR_VIRT_ADDR, CONFIG_BPTR_VIRT_ADDR,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_M,
+		0, 3, BOOKE_PAGESZ_4K, 1),
+
+#ifdef CONFIG_PCIE1
+	/* *I*G* - PCIe */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE1_MEM_PHYS, CONFIG_SYS_PCIE1_MEM_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 4, BOOKE_PAGESZ_1G, 1),
+#endif
+
+#ifdef CONFIG_PCIE2
+	/* *I*G* - PCIe */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE2_MEM_PHYS, CONFIG_SYS_PCIE2_MEM_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 5, BOOKE_PAGESZ_256M, 1),
+#endif
+
+#ifdef CONFIG_PCIE3
+	/* *I*G* - PCIe */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE3_MEM_PHYS, CONFIG_SYS_PCIE3_MEM_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 6, BOOKE_PAGESZ_256M, 1),
+#endif
+
+#if defined(CONFIG_PCIE1) || defined(CONFIG_PCIE2) || defined(CONFIG_PCIE3)
+	/* *I*G* - PCIe */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE1_IO_PHYS, CONFIG_SYS_PCIE1_IO_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 7, BOOKE_PAGESZ_64M, 1),
+#endif
+
+};
+
+int num_tlb_entries = ARRAY_SIZE(tlb_table);

u-boot/board/xes/xpedite537x/xpedite537x.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2008 Extreme Engineering Solutions, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/mmu.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_pci.h>
+#include <asm/io.h>
+#include <asm/cache.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <pca953x.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern void ft_board_pci_setup(void *blob, bd_t *bd);
+
+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);
+
+	/*
+	 * Remap NOR flash region to caching-inhibited
+	 * so that flash can be erased/programmed properly.
+	 */
+
+	/* Flush d-cache and invalidate i-cache of any FLASH data */
+	flush_dcache();
+	invalidate_icache();
+
+	/* Invalidate existing TLB entry for NOR flash */
+	disable_tlb(0);
+	set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
+		(CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 0, BOOKE_PAGESZ_256M, 1);
+
+	flash_cs_fixup();
+
+	return 0;
+}
+
+#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