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/m548xevb/m548xevb.c

@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <pci.h>
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	puts("Board: ");
+	puts("Freescale FireEngine 5485 EVB\n");
+	return 0;
+};
+
+phys_size_t initdram(int board_type)
+{
+	siu_t *siu = (siu_t *) (MMAP_SIU);
+	sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
+	u32 dramsize, i;
+#ifdef CONFIG_SYS_DRAMSZ1
+	u32 temp;
+#endif
+
+	out_be32(&siu->drv, CONFIG_SYS_SDRAM_DRVSTRENGTH);
+
+	dramsize = CONFIG_SYS_DRAMSZ * 0x100000;
+	for (i = 0x13; i < 0x20; i++) {
+		if (dramsize == (1 << i))
+			break;
+	}
+	i--;
+	out_be32(&siu->cs0cfg, CONFIG_SYS_SDRAM_BASE | i);
+
+#ifdef CONFIG_SYS_DRAMSZ1
+	temp = CONFIG_SYS_DRAMSZ1 * 0x100000;
+	for (i = 0x13; i < 0x20; i++) {
+		if (temp == (1 << i))
+			break;
+	}
+	i--;
+	dramsize += temp;
+	out_be32(&siu->cs1cfg, (CONFIG_SYS_SDRAM_BASE + temp) | i);
+#endif
+
+	out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
+	out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
+
+	/* Issue PALL */
+	out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
+
+	/* Issue LEMR */
+	out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
+	out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE | 0x04000000);
+
+	udelay(500);
+
+	/* Issue PALL */
+	out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
+
+	/* Perform two refresh cycles */
+	out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
+	out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
+
+	out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
+
+	out_be32(&sdram->ctrl,
+		(CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00);
+
+	udelay(100);
+
+	return dramsize;
+};
+
+int testdram(void)
+{
+	/* TODO: XXX XXX XXX */
+	printf("DRAM test not implemented!\n");
+
+	return (0);
+}
+
+#if defined(CONFIG_PCI)
+/*
+ * Initialize PCI devices, report devices found.
+ */
+static struct pci_controller hose;
+extern void pci_mcf547x_8x_init(struct pci_controller *hose);
+
+void pci_init_board(void)
+{
+	pci_mcf547x_8x_init(&hose);
+}
+#endif				/* CONFIG_PCI */