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/m5253demo/Kconfig

@@ -0,0 +1,15 @@
+if TARGET_M5253DEMO
+
+config SYS_CPU
+	default "mcf52x2"
+
+config SYS_BOARD
+	default "m5253demo"
+
+config SYS_VENDOR
+	default "freescale"
+
+config SYS_CONFIG_NAME
+	default "M5253DEMO"
+
+endif

u-boot/board/freescale/m5253demo/MAINTAINERS

@@ -0,0 +1,6 @@
+M5253DEMO BOARD
+M:	TsiChung Liew <Tsi-Chung.Liew@freescale.com>
+S:	Maintained
+F:	board/freescale/m5253demo/
+F:	include/configs/M5253DEMO.h
+F:	configs/M5253DEMO_defconfig

u-boot/board/freescale/m5253demo/Makefile

@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	= m5253demo.o flash.o

u-boot/board/freescale/m5253demo/flash.c

@@ -0,0 +1,451 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/immap.h>
+
+#ifndef CONFIG_SYS_FLASH_CFI
+typedef unsigned short FLASH_PORT_WIDTH;
+typedef volatile unsigned short FLASH_PORT_WIDTHV;
+
+#define FPW             FLASH_PORT_WIDTH
+#define FPWV            FLASH_PORT_WIDTHV
+
+#define FLASH_CYCLE1    0x5555
+#define FLASH_CYCLE2    0x2aaa
+
+#define SYNC			__asm__("nop")
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+
+ulong flash_get_size(FPWV * addr, flash_info_t * info);
+int flash_get_offsets(ulong base, flash_info_t * info);
+int write_word(flash_info_t * info, FPWV * dest, u16 data);
+void inline spin_wheel(void);
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
+
+ulong flash_init(void)
+{
+	ulong size = 0;
+	ulong fbase = 0;
+
+	fbase = (ulong) CONFIG_SYS_FLASH_BASE;
+	flash_get_size((FPWV *) fbase, &flash_info[0]);
+	flash_get_offsets((ulong) fbase, &flash_info[0]);
+	fbase += flash_info[0].size;
+	size += flash_info[0].size;
+
+	/* Protect monitor and environment sectors */
+	flash_protect(FLAG_PROTECT_SET,
+		      CONFIG_SYS_MONITOR_BASE,
+		      CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]);
+
+	return size;
+}
+
+int flash_get_offsets(ulong base, flash_info_t * info)
+{
+	int i;
+
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
+
+		info->start[0] = base;
+		info->protect[0] = 0;
+		for (i = 1; i < CONFIG_SYS_SST_SECT; i++) {
+			info->start[i] = info->start[i - 1]
+						+ CONFIG_SYS_SST_SECTSZ;
+			info->protect[i] = 0;
+		}
+	}
+
+	return ERR_OK;
+}
+
+void flash_print_info(flash_info_t * info)
+{
+	int i;
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_SST:
+		printf("SST ");
+		break;
+	default:
+		printf("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_SST6401B:
+		printf("SST39VF6401B\n");
+		break;
+	default:
+		printf("Unknown Chip Type\n");
+		return;
+	}
+
+	if (info->size > 0x100000) {
+		int remainder;
+
+		printf("  Size: %ld", info->size >> 20);
+
+		remainder = (info->size % 0x100000);
+		if (remainder) {
+			remainder >>= 10;
+			remainder = (int)((float)
+					  (((float)remainder / (float)1024) *
+					   10000));
+			printf(".%d ", remainder);
+		}
+
+		printf("MB in %d Sectors\n", info->sector_count);
+	} else
+		printf("  Size: %ld KB in %d Sectors\n",
+		       info->size >> 10, info->sector_count);
+
+	printf("  Sector Start Addresses:");
+	for (i = 0; i < info->sector_count; ++i) {
+		if ((i % 5) == 0)
+			printf("\n   ");
+		printf(" %08lX%s",
+		       info->start[i], info->protect[i] ? " (RO)" : "     ");
+	}
+	printf("\n");
+}
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+ulong flash_get_size(FPWV * addr, flash_info_t * info)
+{
+	u16 value;
+
+	addr[FLASH_CYCLE1] = (FPWV) 0x00AA00AA;	/* for Atmel, Intel ignores this */
+	addr[FLASH_CYCLE2] = (FPWV) 0x00550055;	/* for Atmel, Intel ignores this */
+	addr[FLASH_CYCLE1] = (FPWV) 0x00900090;	/* selects Intel or Atmel */
+
+	switch (addr[0] & 0xffff) {
+	case (u8) SST_MANUFACT:
+		info->flash_id = FLASH_MAN_SST;
+		value = addr[1];
+		break;
+	default:
+		printf("Unknown Flash\n");
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+
+		*addr = (FPW) 0x00F000F0;
+		return (0);	/* no or unknown flash  */
+	}
+
+	switch (value) {
+	case (u16) SST_ID_xF6401B:
+		info->flash_id += FLASH_SST6401B;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		break;
+	}
+
+	info->sector_count = 0;
+	info->size = 0;
+	info->sector_count = CONFIG_SYS_SST_SECT;
+	info->size = CONFIG_SYS_SST_SECT * CONFIG_SYS_SST_SECTSZ;
+
+	/* reset ID mode */
+	*addr = (FPWV) 0x00F000F0;
+
+	if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
+		printf("** ERROR: sector count %d > max (%d) **\n",
+		       info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
+		info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
+	}
+
+	return (info->size);
+}
+
+int flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+	FPWV *addr;
+	int flag, prot, sect, count;
+	ulong type, start;
+	int rcode = 0, flashtype = 0;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN)
+			printf("- missing\n");
+		else
+			printf("- no sectors to erase\n");
+		return 1;
+	}
+
+	type = (info->flash_id & FLASH_VENDMASK);
+
+	switch (type) {
+	case FLASH_MAN_SST:
+		flashtype = 1;
+		break;
+	default:
+		type = (info->flash_id & FLASH_VENDMASK);
+		printf("Can't erase unknown flash type %08lx - aborted\n",
+		       info->flash_id);
+		return 1;
+	}
+
+	prot = 0;
+	for (sect = s_first; sect <= s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+
+	if (prot)
+		printf("- Warning: %d protected sectors will not be erased!\n",
+		       prot);
+	else
+		printf("\n");
+
+	flag = disable_interrupts();
+
+	start = get_timer(0);
+
+	if ((s_last - s_first) == (CONFIG_SYS_SST_SECT - 1)) {
+		if (prot == 0) {
+			addr = (FPWV *) info->start[0];
+
+			addr[FLASH_CYCLE1] = 0x00AA;	/* unlock */
+			addr[FLASH_CYCLE2] = 0x0055;	/* unlock */
+			addr[FLASH_CYCLE1] = 0x0080;	/* erase mode */
+			addr[FLASH_CYCLE1] = 0x00AA;	/* unlock */
+			addr[FLASH_CYCLE2] = 0x0055;	/* unlock */
+			*addr = 0x0030;	/* erase chip */
+
+			count = 0;
+			start = get_timer(0);
+
+			while ((*addr & 0x0080) != 0x0080) {
+				if (count++ > 0x10000) {
+					spin_wheel();
+					count = 0;
+				}
+
+				if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
+					printf("Timeout\n");
+					*addr = 0x00F0;	/* reset to read mode */
+
+					return 1;
+				}
+			}
+
+			*addr = 0x00F0;	/* reset to read mode */
+
+			printf("\b. done\n");
+
+			if (flag)
+				enable_interrupts();
+
+			return 0;
+		} else if (prot == CONFIG_SYS_SST_SECT) {
+			return 1;
+		}
+	}
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+
+			addr = (FPWV *) (info->start[sect]);
+
+			printf(".");
+
+			/* arm simple, non interrupt dependent timer */
+			start = get_timer(0);
+
+			switch (flashtype) {
+			case 1:
+				{
+					FPWV *base;	/* first address in bank */
+
+					flag = disable_interrupts();
+
+					base = (FPWV *) (CONFIG_SYS_FLASH_BASE);	/* First sector */
+
+					base[FLASH_CYCLE1] = 0x00AA;	/* unlock */
+					base[FLASH_CYCLE2] = 0x0055;	/* unlock */
+					base[FLASH_CYCLE1] = 0x0080;	/* erase mode */
+					base[FLASH_CYCLE1] = 0x00AA;	/* unlock */
+					base[FLASH_CYCLE2] = 0x0055;	/* unlock */
+					*addr = 0x0050;	/* erase sector */
+
+					if (flag)
+						enable_interrupts();
+
+					while ((*addr & 0x0080) != 0x0080) {
+						if (get_timer(start) >
+						    CONFIG_SYS_FLASH_ERASE_TOUT) {
+							printf("Timeout\n");
+							*addr = 0x00F0;	/* reset to read mode */
+
+							rcode = 1;
+							break;
+						}
+					}
+
+					*addr = 0x00F0;	/* reset to read mode */
+					break;
+				}
+			}	/* switch (flashtype) */
+		}
+	}
+	printf(" done\n");
+
+	if (flag)
+		enable_interrupts();
+
+	return rcode;
+}
+
+int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	ulong wp, count;
+	u16 data;
+	int rc;
+
+	if (info->flash_id == FLASH_UNKNOWN)
+		return 4;
+
+	/* get lower word aligned address */
+	wp = addr;
+
+	/* handle unaligned start bytes */
+	if (wp & 1) {
+		data = *((FPWV *) wp);
+		data = (data << 8) | *src;
+
+		if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
+			return (rc);
+
+		wp++;
+		cnt -= 1;
+		src++;
+	}
+
+	while (cnt >= 2) {
+		/*
+		 * handle word aligned part
+		 */
+		count = 0;
+		data = *((FPWV *) src);
+
+		if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
+			return (rc);
+
+		wp += 2;
+		src += 2;
+		cnt -= 2;
+
+		if (count++ > 0x800) {
+			spin_wheel();
+			count = 0;
+		}
+	}
+	/* handle word aligned part */
+	if (cnt) {
+		/* handle word aligned part */
+		count = 0;
+		data = *((FPWV *) wp);
+
+		data = (data & 0x00FF) | (*src << 8);
+
+		if ((rc = write_word(info, (FPWV *) wp, data)) != 0)
+			return (rc);
+
+		wp++;
+		src++;
+		cnt -= 1;
+		if (count++ > 0x800) {
+			spin_wheel();
+			count = 0;
+		}
+	}
+
+	if (cnt == 0)
+		return ERR_OK;
+
+	return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash
+ * A word is 16 bits, whichever the bus width of the flash bank
+ * (not an individual chip) is.
+ *
+ * returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+int write_word(flash_info_t * info, FPWV * dest, u16 data)
+{
+	ulong start;
+	int flag;
+	int res = 0;		/* result, assume success */
+	FPWV *base;		/* first address in flash bank */
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*dest & (u8) data) != (u8) data) {
+		return (2);
+	}
+
+	base = (FPWV *) (CONFIG_SYS_FLASH_BASE);
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	base[FLASH_CYCLE1] = (u8) 0x00AA00AA;	/* unlock */
+	base[FLASH_CYCLE2] = (u8) 0x00550055;	/* unlock */
+	base[FLASH_CYCLE1] = (u8) 0x00A000A0;	/* selects program mode */
+
+	*dest = data;		/* start programming the data */
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	start = get_timer(0);
+
+	/* data polling for D7 */
+	while (res == 0
+	       && (*dest & (u8) 0x00800080) != (data & (u8) 0x00800080)) {
+		if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+			*dest = (u8) 0x00F000F0;	/* reset bank */
+			res = 1;
+		}
+	}
+
+	*dest++ = (u8) 0x00F000F0;	/* reset bank */
+
+	return (res);
+}
+
+void inline spin_wheel(void)
+{
+	static int p = 0;
+	static char w[] = "\\/-";
+
+	printf("\010%c", w[p]);
+	(++p == 3) ? (p = 0) : 0;
+}
+
+#endif

u-boot/board/freescale/m5253demo/m5253demo.c

@@ -0,0 +1,140 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * Hayden Fraser (Hayden.Fraser@freescale.com)
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/immap.h>
+#include <netdev.h>
+#include <asm/io.h>
+
+int checkboard(void)
+{
+	puts("Board: ");
+	puts("Freescale MCF5253 DEMO\n");
+	return 0;
+};
+
+phys_size_t initdram(int board_type)
+{
+	u32 dramsize = 0;
+
+	/*
+	 * Check to see if the SDRAM has already been initialized
+	 * by a run control tool
+	 */
+	if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
+		u32 RC, temp;
+
+		RC = (CONFIG_SYS_CLK / 1000000) >> 1;
+		RC = (RC * 15) >> 4;
+
+		/* Initialize DRAM Control Register: DCR */
+		mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
+		__asm__("nop");
+
+		mbar_writeLong(MCFSIM_DACR0, 0x00003224);
+		__asm__("nop");
+
+		/* Initialize DMR0 */
+		dramsize = (CONFIG_SYS_SDRAM_SIZE << 20);
+		temp = (dramsize - 1) & 0xFFFC0000;
+		mbar_writeLong(MCFSIM_DMR0, temp | 1);
+		__asm__("nop");
+
+		mbar_writeLong(MCFSIM_DACR0, 0x0000322c);
+		mb();
+		__asm__("nop");
+
+		/* Write to this block to initiate precharge */
+		*(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
+		mb();
+		__asm__("nop");
+
+		/* Set RE bit in DACR */
+		mbar_writeLong(MCFSIM_DACR0,
+			       mbar_readLong(MCFSIM_DACR0) | 0x8000);
+		__asm__("nop");
+
+		/* Wait for at least 8 auto refresh cycles to occur */
+		udelay(500);
+
+		/* Finish the configuration by issuing the MRS */
+		mbar_writeLong(MCFSIM_DACR0,
+			       mbar_readLong(MCFSIM_DACR0) | 0x0040);
+		__asm__("nop");
+
+		*(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
+		mb();
+	}
+
+	return dramsize;
+}
+
+int testdram(void)
+{
+	/* TODO: XXX XXX XXX */
+	printf("DRAM test not implemented!\n");
+
+	return (0);
+}
+
+#ifdef CONFIG_CMD_IDE
+#include <ata.h>
+int ide_preinit(void)
+{
+	return (0);
+}
+
+void ide_set_reset(int idereset)
+{
+	atac_t *ata = (atac_t *) CONFIG_SYS_ATA_BASE_ADDR;
+	long period;
+	/*  t1,  t2,  t3,  t4,  t5,  t6,  t9, tRD,  tA */
+	int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35},	/* PIO 0 */
+	{50, 125, 45, 20, 35, 5, 15, 0, 35},	/* PIO 1 */
+	{30, 100, 30, 15, 20, 5, 10, 0, 35},	/* PIO 2 */
+	{30, 80, 30, 10, 20, 5, 10, 0, 35},	/* PIO 3 */
+	{25, 70, 20, 10, 20, 5, 10, 0, 35}	/* PIO 4 */
+	};
+
+	if (idereset) {
+		/* control reset */
+		out_8(&ata->cr, 0);
+		udelay(100);
+	} else {
+		mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
+
+#define CALC_TIMING(t) (t + period - 1) / period
+		period = 1000000000 / (CONFIG_SYS_CLK / 2);	/* period in ns */
+
+		/*ata->ton = CALC_TIMING (180); */
+		out_8(&ata->t1, CALC_TIMING(piotms[2][0]));
+		out_8(&ata->t2w, CALC_TIMING(piotms[2][1]));
+		out_8(&ata->t2r, CALC_TIMING(piotms[2][1]));
+		out_8(&ata->ta, CALC_TIMING(piotms[2][8]));
+		out_8(&ata->trd, CALC_TIMING(piotms[2][7]));
+		out_8(&ata->t4, CALC_TIMING(piotms[2][3]));
+		out_8(&ata->t9, CALC_TIMING(piotms[2][6]));
+
+		/* IORDY enable */
+		out_8(&ata->cr, 0x40);
+		udelay(2000);
+		/* IORDY enable */
+		setbits_8(&ata->cr, 0x01);
+	}
+}
+#endif				/* CONFIG_CMD_IDE */
+
+
+#ifdef CONFIG_DRIVER_DM9000
+int board_eth_init(bd_t *bis)
+{
+	return dm9000_initialize(bis);
+}
+#endif