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/BuS/eb_cpu5282/Kconfig

@@ -0,0 +1,15 @@
+if TARGET_EB_CPU5282
+
+config SYS_CPU
+	default "mcf52x2"
+
+config SYS_BOARD
+	default "eb_cpu5282"
+
+config SYS_VENDOR
+	default "BuS"
+
+config SYS_CONFIG_NAME
+	default "eb_cpu5282"
+
+endif

u-boot/board/BuS/eb_cpu5282/MAINTAINERS

@@ -0,0 +1,7 @@
+EB_CPU5282 BOARD
+M:	Jens Scharsig <esw@bus-elektronik.de>
+S:	Maintained
+F:	board/BuS/eb_cpu5282/
+F:	include/configs/eb_cpu5282.h
+F:	configs/eb_cpu5282_defconfig
+F:	configs/eb_cpu5282_internal_defconfig

u-boot/board/BuS/eb_cpu5282/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	= eb_cpu5282.o

u-boot/board/BuS/eb_cpu5282/eb_cpu5282.c

@@ -0,0 +1,264 @@
+/*
+ * (C) Copyright 2005-2009
+ * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de>
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include "asm/m5282.h"
+#include <bmp_layout.h>
+#include <status_led.h>
+#include <bus_vcxk.h>
+
+/*---------------------------------------------------------------------------*/
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_VIDEO
+unsigned long display_width;
+unsigned long display_height;
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+int checkboard (void)
+{
+	puts("Board: EB+CPU5282 (BuS Elektronik GmbH & Co. KG)\n");
+#if (CONFIG_SYS_TEXT_BASE ==  CONFIG_SYS_INT_FLASH_BASE)
+	puts("       Boot from Internal FLASH\n");
+#endif
+	return 0;
+}
+
+phys_size_t initdram (int board_type)
+{
+	int size, i;
+
+	size = 0;
+	MCFSDRAMC_DCR = MCFSDRAMC_DCR_RTIM_6 |
+			MCFSDRAMC_DCR_RC((15 * CONFIG_SYS_CLK / 1000000) >> 4);
+	asm (" nop");
+#ifdef CONFIG_SYS_SDRAM_BASE0
+	MCFSDRAMC_DACR0 = MCFSDRAMC_DACR_BASE(CONFIG_SYS_SDRAM_BASE0)|
+		MCFSDRAMC_DACR_CASL(1) | MCFSDRAMC_DACR_CBM(3) |
+		MCFSDRAMC_DACR_PS_32;
+	asm (" nop");
+
+	MCFSDRAMC_DMR0 = MCFSDRAMC_DMR_BAM_16M | MCFSDRAMC_DMR_V;
+	asm (" nop");
+
+	MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_IP;
+	asm (" nop");
+	for (i = 0; i < 10; i++)
+		asm (" nop");
+
+	*(unsigned long *)(CONFIG_SYS_SDRAM_BASE0) = 0xA5A5A5A5;
+	asm (" nop");
+	MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_RE;
+	asm (" nop");
+
+	for (i = 0; i < 2000; i++)
+		asm (" nop");
+
+	MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_IMRS;
+	asm (" nop");
+	/* write SDRAM mode register */
+	*(unsigned long *)(CONFIG_SYS_SDRAM_BASE0 + 0x80440) = 0xA5A5A5A5;
+	asm (" nop");
+	size += CONFIG_SYS_SDRAM_SIZE0 * 1024 * 1024;
+#endif
+#ifdef CONFIG_SYS_SDRAM_BASE1xx
+	MCFSDRAMC_DACR1 = MCFSDRAMC_DACR_BASE (CONFIG_SYS_SDRAM_BASE1)
+			| MCFSDRAMC_DACR_CASL (1)
+			| MCFSDRAMC_DACR_CBM (3)
+			| MCFSDRAMC_DACR_PS_16;
+
+	MCFSDRAMC_DMR1 = MCFSDRAMC_DMR_BAM_16M | MCFSDRAMC_DMR_V;
+
+	MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_IP;
+
+	*(unsigned short *) (CONFIG_SYS_SDRAM_BASE1) = 0xA5A5;
+	MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_RE;
+
+	for (i = 0; i < 2000; i++)
+		asm (" nop");
+
+	MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_IMRS;
+	*(unsigned int *) (CONFIG_SYS_SDRAM_BASE1 + 0x220) = 0xA5A5;
+	size += CONFIG_SYS_SDRAM_SIZE1 * 1024 * 1024;
+#endif
+	return size;
+}
+
+#if defined(CONFIG_SYS_DRAM_TEST)
+int testdram (void)
+{
+	uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
+	uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
+	uint *p;
+
+	printf("SDRAM test phase 1:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0xaaaaaaaa;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0xaaaaaaaa) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("SDRAM test phase 2:\n");
+	for (p = pstart; p < pend; p++)
+		*p = 0x55555555;
+
+	for (p = pstart; p < pend; p++) {
+		if (*p != 0x55555555) {
+			printf ("SDRAM test fails at: %08x\n", (uint) p);
+			return 1;
+		}
+	}
+
+	printf("SDRAM test passed.\n");
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_HW_WATCHDOG)
+
+void hw_watchdog_init(void)
+{
+	char *s;
+	int enable;
+
+	enable = 1;
+	s = getenv("watchdog");
+	if (s != NULL)
+		if ((strncmp(s, "off", 3) == 0) || (strncmp(s, "0", 1) == 0))
+			enable = 0;
+	if (enable)
+		MCFGPTA_GPTDDR  |= (1<<2);
+	else
+		MCFGPTA_GPTDDR  &= ~(1<<2);
+}
+
+void hw_watchdog_reset(void)
+{
+	MCFGPTA_GPTPORT  ^= (1<<2);
+}
+#endif
+
+int misc_init_r(void)
+{
+#ifdef	CONFIG_HW_WATCHDOG
+	hw_watchdog_init();
+#endif
+	return 1;
+}
+
+void __led_toggle(led_id_t mask)
+{
+	MCFGPTA_GPTPORT ^= (1 << 3);
+}
+
+void __led_init(led_id_t mask, int state)
+{
+	__led_set(mask, state);
+	MCFGPTA_GPTDDR  |= (1 << 3);
+}
+
+void __led_set(led_id_t mask, int state)
+{
+	if (state == STATUS_LED_ON)
+		MCFGPTA_GPTPORT |= (1 << 3);
+	else
+		MCFGPTA_GPTPORT &= ~(1 << 3);
+}
+
+#if defined(CONFIG_VIDEO)
+
+int drv_video_init(void)
+{
+	char *s;
+#ifdef CONFIG_SPLASH_SCREEN
+	unsigned long splash;
+#endif
+	printf("Init Video as ");
+	s = getenv("displaywidth");
+	if (s != NULL)
+		display_width = simple_strtoul(s, NULL, 10);
+	else
+		display_width = 256;
+
+	s = getenv("displayheight");
+	if (s != NULL)
+		display_height = simple_strtoul(s, NULL, 10);
+	else
+		display_height = 256;
+
+	printf("%lu x %lu pixel matrix\n", display_width, display_height);
+
+	MCFCCM_CCR &= ~MCFCCM_CCR_SZEN;
+	MCFGPIO_PEPAR &= ~MCFGPIO_PEPAR_PEPA2;
+
+	vcxk_init(display_width, display_height);
+
+#ifdef CONFIG_SPLASH_SCREEN
+	s = getenv("splashimage");
+	if (s != NULL) {
+		splash = simple_strtoul(s, NULL, 16);
+		vcxk_acknowledge_wait();
+		video_display_bitmap(splash, 0, 0);
+	}
+#endif
+	return 0;
+}
+#endif
+
+/*---------------------------------------------------------------------------*/
+
+#ifdef CONFIG_VIDEO
+int do_brightness(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int rcode = 0;
+	ulong side;
+	ulong bright;
+
+	switch (argc) {
+	case 3:
+		side = simple_strtoul(argv[1], NULL, 10);
+		bright = simple_strtoul(argv[2], NULL, 10);
+		if ((side >= 0) && (side <= 3) &&
+			(bright >= 0) && (bright <= 1000)) {
+			vcxk_setbrightness(side, bright);
+			rcode = 0;
+		} else {
+			printf("parameters out of range\n");
+			printf("Usage:\n%s\n", cmdtp->usage);
+			rcode = 1;
+		}
+		break;
+	default:
+		printf("Usage:\n%s\n", cmdtp->usage);
+		rcode = 1;
+		break;
+	}
+	return rcode;
+}
+
+/*---------------------------------------------------------------------------*/
+
+U_BOOT_CMD(
+	bright,	3,	0,	do_brightness,
+	"sets the display brightness\n",
+	" <side> <0..1000>\n        side: 0/3=both; 1=first; 2=second\n"
+);
+
+#endif
+
+/* EOF EB+MCF-EV123.c */