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/mpc8315erdb/mpc8315erdb.c

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *         Dave Liu <daveliu@freescale.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <hwconfig.h>
+#include <i2c.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <pci.h>
+#include <mpc83xx.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <ns16550.h>
+#include <nand.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
+
+	if (im->pmc.pmccr1 & PMCCR1_POWER_OFF)
+		gd->flags |= GD_FLG_SILENT;
+
+	return 0;
+}
+
+#ifndef CONFIG_NAND_SPL
+
+static u8 read_board_info(void)
+{
+	u8 val8;
+	i2c_set_bus_num(0);
+
+	if (i2c_read(CONFIG_SYS_I2C_PCF8574A_ADDR, 0, 0, &val8, 1) == 0)
+		return val8;
+	else
+		return 0;
+}
+
+int checkboard(void)
+{
+	static const char * const rev_str[] = {
+		"0.0",
+		"0.1",
+		"1.0",
+		"1.1",
+		"<unknown>",
+	};
+	u8 info;
+	int i;
+
+	info = read_board_info();
+	i = (!info) ? 4: info & 0x03;
+
+	printf("Board: Freescale MPC8315ERDB Rev %s\n", rev_str[i]);
+
+	return 0;
+}
+
+static struct pci_region pci_regions[] = {
+	{
+		bus_start: CONFIG_SYS_PCI_MEM_BASE,
+		phys_start: CONFIG_SYS_PCI_MEM_PHYS,
+		size: CONFIG_SYS_PCI_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CONFIG_SYS_PCI_MMIO_BASE,
+		phys_start: CONFIG_SYS_PCI_MMIO_PHYS,
+		size: CONFIG_SYS_PCI_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+	{
+		bus_start: CONFIG_SYS_PCI_IO_BASE,
+		phys_start: CONFIG_SYS_PCI_IO_PHYS,
+		size: CONFIG_SYS_PCI_IO_SIZE,
+		flags: PCI_REGION_IO
+	}
+};
+
+static struct pci_region pcie_regions_0[] = {
+	{
+		.bus_start = CONFIG_SYS_PCIE1_MEM_BASE,
+		.phys_start = CONFIG_SYS_PCIE1_MEM_PHYS,
+		.size = CONFIG_SYS_PCIE1_MEM_SIZE,
+		.flags = PCI_REGION_MEM,
+	},
+	{
+		.bus_start = CONFIG_SYS_PCIE1_IO_BASE,
+		.phys_start = CONFIG_SYS_PCIE1_IO_PHYS,
+		.size = CONFIG_SYS_PCIE1_IO_SIZE,
+		.flags = PCI_REGION_IO,
+	},
+};
+
+static struct pci_region pcie_regions_1[] = {
+	{
+		.bus_start = CONFIG_SYS_PCIE2_MEM_BASE,
+		.phys_start = CONFIG_SYS_PCIE2_MEM_PHYS,
+		.size = CONFIG_SYS_PCIE2_MEM_SIZE,
+		.flags = PCI_REGION_MEM,
+	},
+	{
+		.bus_start = CONFIG_SYS_PCIE2_IO_BASE,
+		.phys_start = CONFIG_SYS_PCIE2_IO_PHYS,
+		.size = CONFIG_SYS_PCIE2_IO_SIZE,
+		.flags = PCI_REGION_IO,
+	},
+};
+
+void pci_init_board(void)
+{
+	volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile sysconf83xx_t *sysconf = &immr->sysconf;
+	volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
+	volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
+	volatile law83xx_t *pcie_law = sysconf->pcielaw;
+	struct pci_region *reg[] = { pci_regions };
+	struct pci_region *pcie_reg[] = { pcie_regions_0, pcie_regions_1, };
+
+	/* Enable all 3 PCI_CLK_OUTPUTs. */
+	clk->occr |= 0xe0000000;
+
+	/*
+	 * Configure PCI Local Access Windows
+	 */
+	pci_law[0].bar = CONFIG_SYS_PCI_MEM_PHYS & LAWBAR_BAR;
+	pci_law[0].ar = LBLAWAR_EN | LBLAWAR_512MB;
+
+	pci_law[1].bar = CONFIG_SYS_PCI_IO_PHYS & LAWBAR_BAR;
+	pci_law[1].ar = LBLAWAR_EN | LBLAWAR_1MB;
+
+	mpc83xx_pci_init(1, reg);
+
+	/* Configure the clock for PCIE controller */
+	clrsetbits_be32(&clk->sccr, SCCR_PCIEXP1CM | SCCR_PCIEXP2CM,
+				    SCCR_PCIEXP1CM_1 | SCCR_PCIEXP2CM_1);
+
+	/* Deassert the resets in the control register */
+	out_be32(&sysconf->pecr1, 0xE0008000);
+	out_be32(&sysconf->pecr2, 0xE0008000);
+	udelay(2000);
+
+	/* Configure PCI Express Local Access Windows */
+	out_be32(&pcie_law[0].bar, CONFIG_SYS_PCIE1_BASE & LAWBAR_BAR);
+	out_be32(&pcie_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
+
+	out_be32(&pcie_law[1].bar, CONFIG_SYS_PCIE2_BASE & LAWBAR_BAR);
+	out_be32(&pcie_law[1].ar, LBLAWAR_EN | LBLAWAR_512MB);
+
+	mpc83xx_pcie_init(2, pcie_reg);
+}
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+void fdt_tsec1_fixup(void *fdt, bd_t *bd)
+{
+	const char disabled[] = "disabled";
+	const char *path;
+	int ret;
+
+	if (hwconfig_arg_cmp("board_type", "tsec1")) {
+		return;
+	} else if (!hwconfig_arg_cmp("board_type", "ulpi")) {
+		printf("NOTICE: No or unknown board_type hwconfig specified.\n"
+		       "        Assuming board with TSEC1.\n");
+		return;
+	}
+
+	ret = fdt_path_offset(fdt, "/aliases");
+	if (ret < 0) {
+		printf("WARNING: can't find /aliases node\n");
+		return;
+	}
+
+	path = fdt_getprop(fdt, ret, "ethernet0", NULL);
+	if (!path) {
+		printf("WARNING: can't find ethernet0 alias\n");
+		return;
+	}
+
+	do_fixup_by_path(fdt, path, "status", disabled, sizeof(disabled), 1);
+}
+
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+#ifdef CONFIG_PCI
+	ft_pci_setup(blob, bd);
+#endif
+	fdt_fixup_dr_usb(blob, bd);
+	fdt_tsec1_fixup(blob, bd);
+
+	return 0;
+}
+#endif
+
+int board_eth_init(bd_t *bis)
+{
+	cpu_eth_init(bis);	/* Initialize TSECs first */
+	return pci_eth_init(bis);
+}
+
+#else /* CONFIG_NAND_SPL */
+
+int checkboard(void)
+{
+	puts("Board: Freescale MPC8315ERDB\n");
+	return 0;
+}
+
+void board_init_f(ulong bootflag)
+{
+	board_early_init_f();
+	NS16550_init((NS16550_t)(CONFIG_SYS_IMMR + 0x4500),
+		     CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
+	puts("NAND boot... ");
+	init_timebase();
+	initdram(0);
+	relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC + 0x10000, (gd_t *)gd,
+		      CONFIG_SYS_NAND_U_BOOT_RELOC);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	nand_boot();
+}
+
+void putc(char c)
+{
+	if (gd->flags & GD_FLG_SILENT)
+		return;
+
+	if (c == '\n')
+		NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), '\r');
+
+	NS16550_putc((NS16550_t)(CONFIG_SYS_IMMR + 0x4500), c);
+}
+
+#endif /* CONFIG_NAND_SPL */