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/xpedite520x/Kconfig

@@ -0,0 +1,12 @@
+if TARGET_XPEDITE520X
+
+config SYS_BOARD
+	default "xpedite520x"
+
+config SYS_VENDOR
+	default "xes"
+
+config SYS_CONFIG_NAME
+	default "xpedite520x"
+
+endif

u-boot/board/xes/xpedite520x/MAINTAINERS

@@ -0,0 +1,6 @@
+XPEDITE520X BOARD
+M:	Peter Tyser <ptyser@xes-inc.com>
+S:	Maintained
+F:	board/xes/xpedite520x/
+F:	include/configs/xpedite520x.h
+F:	configs/xpedite520x_defconfig

u-boot/board/xes/xpedite520x/Makefile

@@ -0,0 +1,13 @@
+#
+# Copyright 2008 Extreme Engineering Solutions, Inc.
+# Copyright 2004 Freescale Semiconductor.
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= xpedite520x.o
+obj-y	+= ddr.o
+obj-y	+= law.o
+obj-y	+= tlb.o

u-boot/board/xes/xpedite520x/ddr.c

@@ -0,0 +1,69 @@
+/*
+ * 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, unsigned char i2c_address)
+{
+	i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
+
+	/* We use soldered memory, but use an SPD EEPROM to describe it.
+	 * The SPD has an unspecified dimm type, but the DDR2 initialization
+	 * code requires a specific type to be specified. This sets the type
+	 * as a standard unregistered SO-DIMM. */
+	if (spd->dimm_type == 0) {
+		spd->dimm_type = 0x4;
+		((uchar *)spd)[63] += 0x4;
+	}
+}
+
+void fsl_ddr_board_options(memctl_options_t *popts,
+				dimm_params_t *pdimm,
+				unsigned int ctrl_num)
+{
+	/*
+	 * Factors to consider for clock adjust:
+	 *	- number of chips on bus
+	 *	- position of slot
+	 *	- DDR1 vs. DDR2?
+	 *	- ???
+	 *
+	 * This needs to be determined on a board-by-board basis.
+	 *	0110	3/4 cycle late
+	 *	0111	7/8 cycle late
+	 */
+	popts->clk_adjust = 7;
+
+	/*
+	 * Factors to consider for CPO:
+	 *	- frequency
+	 *	- ddr1 vs. ddr2
+	 */
+	popts->cpo_override = 9;
+
+	/*
+	 * Factors to consider for write data delay:
+	 *	- number of DIMMs
+	 *
+	 * 1 = 1/4 clock delay
+	 * 2 = 1/2 clock delay
+	 * 3 = 3/4 clock delay
+	 * 4 = 1   clock delay
+	 * 5 = 5/4 clock delay
+	 * 6 = 3/2 clock delay
+	 */
+	popts->write_data_delay = 3;
+
+	/*
+	 * Factors to consider for half-strength driver enable:
+	 *	- number of DIMMs installed
+	 */
+	popts->half_strength_driver_enable = 0;
+}

u-boot/board/xes/xpedite520x/law.c

@@ -0,0 +1,27 @@
+/*
+ * 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[] = {
+	/* LBC window - maps 256M 0xf0000000 -> 0xffffffff */
+	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/xpedite520x/tlb.c

@@ -0,0 +1,69 @@
+/*
+ * 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),
+
+	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),
+
+#if CONFIG_PCI1
+	/* *I*G* - PCI MEM */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_MEM_PHYS, CONFIG_SYS_PCI1_MEM_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 3, BOOKE_PAGESZ_1G, 1),
+#endif
+
+#if CONFIG_PCI2
+	/* *I*G* - PCI MEM */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCI2_MEM_PHYS, CONFIG_SYS_PCI2_MEM_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 4, BOOKE_PAGESZ_256M, 1),
+#endif
+
+#if defined(CONFIG_PCI1) || defined(CONFIG_PCI2)
+	/* *I*G* - PCI IO */
+	SET_TLB_ENTRY(1, CONFIG_SYS_PCI1_IO_PHYS, CONFIG_SYS_PCI1_IO_PHYS,
+		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		0, 5, BOOKE_PAGESZ_16M, 1),
+#endif
+};
+
+int num_tlb_entries = ARRAY_SIZE(tlb_table);

u-boot/board/xes/xpedite520x/xpedite520x.c

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2008 Extreme Engineering Solutions, Inc.
+ * Copyright 2004, 2007 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <pci.h>
+#include <asm/processor.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_pci.h>
+#include <asm/io.h>
+#include <asm/cache.h>
+#include <asm/mmu.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <pca953x.h>
+
+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_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);
+
+	/*
+	 * 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