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/bf537-stamp/Kconfig

@@ -0,0 +1,9 @@
+if TARGET_BF537_STAMP
+
+config SYS_BOARD
+	default "bf537-stamp"
+
+config SYS_CONFIG_NAME
+	default "bf537-stamp"
+
+endif

u-boot/board/bf537-stamp/MAINTAINERS

@@ -0,0 +1,6 @@
+BF537-STAMP BOARD
+M:	Sonic Zhang <sonic.adi@gmail.com>
+S:	Maintained
+F:	board/bf537-stamp/
+F:	include/configs/bf537-stamp.h
+F:	configs/bf537-stamp_defconfig

u-boot/board/bf537-stamp/Makefile

@@ -0,0 +1,14 @@
+#
+# U-Boot - Makefile
+#
+# Copyright (c) 2005-2007 Analog Device Inc.
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= bf537-stamp.o
+obj-$(CONFIG_BFIN_IDE)   += ide-cf.o
+obj-$(CONFIG_HAS_POST)   += post-memory.o

u-boot/board/bf537-stamp/bf537-stamp.c

@@ -0,0 +1,68 @@
+/*
+ * U-Boot - main board file
+ *
+ * Copyright (c) 2005-2008 Analog Devices Inc.
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <asm/blackfin.h>
+#include <net.h>
+#include <asm/mach-common/bits/bootrom.h>
+#include <netdev.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	printf("Board: ADI BF537 stamp board\n");
+	printf("       Support: http://blackfin.uclinux.org/\n");
+	return 0;
+}
+
+#ifdef CONFIG_BFIN_MAC
+static void board_init_enetaddr(uchar *mac_addr)
+{
+#ifndef CONFIG_SYS_NO_FLASH
+	/* we cram the MAC in the last flash sector */
+	uchar *board_mac_addr = (uchar *)0x203F0000;
+	if (is_valid_ethaddr(board_mac_addr)) {
+		memcpy(mac_addr, board_mac_addr, 6);
+		eth_setenv_enetaddr("ethaddr", mac_addr);
+	}
+#endif
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return bfin_EMAC_initialize(bis);
+}
+#endif
+
+/* miscellaneous platform dependent initialisations */
+int misc_init_r(void)
+{
+#ifdef CONFIG_BFIN_MAC
+	uchar enetaddr[6];
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr))
+		board_init_enetaddr(enetaddr);
+#endif
+
+#ifndef CONFIG_SYS_NO_FLASH
+	/* we use the last sector for the MAC address / POST LDR */
+	extern flash_info_t flash_info[];
+	flash_protect(FLAG_PROTECT_SET, 0x203F0000, 0x203FFFFF, &flash_info[0]);
+#endif
+
+#ifdef CONFIG_BFIN_IDE
+	cf_ide_init();
+#endif
+
+	return 0;
+}

u-boot/board/bf537-stamp/config.mk

@@ -0,0 +1,12 @@
+#
+# Copyright (c) 2005-2008 Analog Device Inc.
+#
+# (C) Copyright 2001
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+# Set some default LDR flags based on boot mode.
+LDR_FLAGS-BFIN_BOOT_PARA := --bits 16 --dma 8
+LDR_FLAGS-BFIN_BOOT_UART := --port g --gpio 6

u-boot/board/bf537-stamp/ide-cf.c

@@ -0,0 +1,66 @@
+/*
+ * CF IDE addon card code
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Copyright (c) 2005-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <asm/blackfin.h>
+
+void cf_outb(unsigned char val, volatile unsigned char *addr)
+{
+	*(addr) = val;
+	SSYNC();
+}
+
+unsigned char cf_inb(volatile unsigned char *addr)
+{
+	volatile unsigned char c;
+
+	c = *(addr);
+	SSYNC();
+
+	return c;
+}
+
+void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
+{
+	int i;
+
+	for (i = 0; i < words; i++)
+		*(sect_buf + i) = *(addr);
+	SSYNC();
+}
+
+void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
+{
+	int i;
+
+	for (i = 0; i < words; i++)
+		*(addr) = *(sect_buf + i);
+	SSYNC();
+}
+
+void cf_ide_init(void)
+{
+#if defined(CONFIG_BFIN_TRUE_IDE)
+	/* Enable ATASEL when in True IDE mode */
+	printf("Using CF True IDE Mode\n");
+	cf_outb(0, (unsigned char *)CONFIG_CF_ATASEL_ENA);
+	udelay(1000);
+#elif defined(CONFIG_BFIN_CF_IDE)
+	/* Disable ATASEL when we're in Common Memory Mode */
+	printf("Using CF Common Memory Mode\n");
+	cf_outb(0, (unsigned char *)CONFIG_CF_ATASEL_DIS);
+	udelay(1000);
+#elif defined(CONFIG_BFIN_HDD_IDE)
+	printf("Using HDD IDE Mode\n");
+#endif
+	ide_init();
+}

u-boot/board/bf537-stamp/post-memory.c

@@ -0,0 +1,257 @@
+#include <common.h>
+#include <asm/io.h>
+
+#include <post.h>
+#include <watchdog.h>
+
+#if CONFIG_POST & CONFIG_SYS_POST_MEMORY
+#define CLKIN 25000000
+#define PATTERN1 0x5A5A5A5A
+#define PATTERN2 0xAAAAAAAA
+
+#define CCLK_NUM	4
+#define SCLK_NUM	3
+
+void post_out_buff(char *buff);
+void post_init_pll(int mult, int div);
+int post_init_sdram(int sclk);
+void post_init_uart(int sclk);
+
+const int pll[CCLK_NUM][SCLK_NUM][2] = {
+	{ {20, 4}, {20, 5}, {20, 10} },	/* CCLK = 500M */
+	{ {16, 4}, {16, 5}, {16, 8} },	/* CCLK = 400M */
+	{ {8, 2}, {8, 4}, {8, 5} },	/* CCLK = 200M */
+	{ {4, 1}, {4, 2}, {4, 4} }	/* CCLK = 100M */
+};
+const char *const log[CCLK_NUM][SCLK_NUM] = {
+	{"CCLK-500MHz SCLK-125MHz:    Writing...\0",
+	 "CCLK-500MHz SCLK-100MHz:    Writing...\0",
+	 "CCLK-500MHz SCLK- 50MHz:    Writing...\0",},
+	{"CCLK-400MHz SCLK-100MHz:    Writing...\0",
+	 "CCLK-400MHz SCLK- 80MHz:    Writing...\0",
+	 "CCLK-400MHz SCLK- 50MHz:    Writing...\0",},
+	{"CCLK-200MHz SCLK-100MHz:    Writing...\0",
+	 "CCLK-200MHz SCLK- 50MHz:    Writing...\0",
+	 "CCLK-200MHz SCLK- 40MHz:    Writing...\0",},
+	{"CCLK-100MHz SCLK-100MHz:    Writing...\0",
+	 "CCLK-100MHz SCLK- 50MHz:    Writing...\0",
+	 "CCLK-100MHz SCLK- 25MHz:    Writing...\0",},
+};
+
+int memory_post_test(int flags)
+{
+	int addr;
+	int m, n;
+	int sclk, sclk_temp;
+	int ret = 1;
+
+	sclk_temp = CLKIN / 1000000;
+	sclk_temp = sclk_temp * CONFIG_VCO_MULT;
+	for (sclk = 0; sclk_temp > 0; sclk++)
+		sclk_temp -= CONFIG_SCLK_DIV;
+	sclk = sclk * 1000000;
+	post_init_uart(sclk);
+	if (post_hotkeys_pressed() == 0)
+		return 0;
+
+	for (m = 0; m < CCLK_NUM; m++) {
+		for (n = 0; n < SCLK_NUM; n++) {
+			/* Calculate the sclk */
+			sclk_temp = CLKIN / 1000000;
+			sclk_temp = sclk_temp * pll[m][n][0];
+			for (sclk = 0; sclk_temp > 0; sclk++)
+				sclk_temp -= pll[m][n][1];
+			sclk = sclk * 1000000;
+
+			post_init_pll(pll[m][n][0], pll[m][n][1]);
+			post_init_sdram(sclk);
+			post_init_uart(sclk);
+			post_out_buff("\n\r\0");
+			post_out_buff(log[m][n]);
+			for (addr = 0x0; addr < CONFIG_SYS_MAX_RAM_SIZE; addr += 4)
+				*(unsigned long *)addr = PATTERN1;
+			post_out_buff("Reading...\0");
+			for (addr = 0x0; addr < CONFIG_SYS_MAX_RAM_SIZE; addr += 4) {
+				if ((*(unsigned long *)addr) != PATTERN1) {
+					post_out_buff("Error\n\r\0");
+					ret = 0;
+				}
+			}
+			post_out_buff("OK\n\r\0");
+		}
+	}
+	if (ret)
+		post_out_buff("memory POST passed\n\r\0");
+	else
+		post_out_buff("memory POST failed\n\r\0");
+
+	post_out_buff("\n\r\n\r\0");
+	return 1;
+}
+
+void post_init_uart(int sclk)
+{
+	int divisor;
+
+	for (divisor = 0; sclk > 0; divisor++)
+		sclk -= 57600 * 16;
+
+	bfin_write_PORTF_FER(0x000F);
+	bfin_write_PORTH_FER(0xFFFF);
+
+	bfin_write_UART_GCTL(0x00);
+	bfin_write_UART_LCR(0x83);
+	SSYNC();
+	bfin_write_UART_DLL(divisor & 0xFF);
+	SSYNC();
+	bfin_write_UART_DLH((divisor >> 8) & 0xFF);
+	SSYNC();
+	bfin_write_UART_LCR(0x03);
+	SSYNC();
+	bfin_write_UART_GCTL(0x01);
+	SSYNC();
+}
+
+void post_out_buff(char *buff)
+{
+
+	int i = 0;
+	for (i = 0; i < 0x80000; i++)
+		;
+	i = 0;
+	while ((buff[i] != '\0') && (i != 100)) {
+		while (!(bfin_read_pUART_LSR() & 0x20)) ;
+		bfin_write_UART_THR(buff[i]);
+		SSYNC();
+		i++;
+	}
+	for (i = 0; i < 0x80000; i++)
+		;
+}
+
+void post_init_pll(int mult, int div)
+{
+
+	bfin_write_SIC_IWR(0x01);
+	bfin_write_PLL_CTL((mult << 9));
+	bfin_write_PLL_DIV(div);
+	asm("CLI R2;");
+	asm("IDLE;");
+	asm("STI R2;");
+	while (!(bfin_read_PLL_STAT() & 0x20)) ;
+}
+
+int post_init_sdram(int sclk)
+{
+	int SDRAM_tRP, SDRAM_tRP_num, SDRAM_tRAS, SDRAM_tRAS_num, SDRAM_tRCD,
+	    SDRAM_tWR;
+	int SDRAM_Tref, SDRAM_NRA, SDRAM_CL, SDRAM_SIZE, SDRAM_WIDTH,
+	    mem_SDGCTL, mem_SDBCTL, mem_SDRRC;
+
+	if ((sclk > 119402985)) {
+		SDRAM_tRP = TRP_2;
+		SDRAM_tRP_num = 2;
+		SDRAM_tRAS = TRAS_7;
+		SDRAM_tRAS_num = 7;
+		SDRAM_tRCD = TRCD_2;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 104477612) && (sclk <= 119402985)) {
+		SDRAM_tRP = TRP_2;
+		SDRAM_tRP_num = 2;
+		SDRAM_tRAS = TRAS_6;
+		SDRAM_tRAS_num = 6;
+		SDRAM_tRCD = TRCD_2;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 89552239) && (sclk <= 104477612)) {
+		SDRAM_tRP = TRP_2;
+		SDRAM_tRP_num = 2;
+		SDRAM_tRAS = TRAS_5;
+		SDRAM_tRAS_num = 5;
+		SDRAM_tRCD = TRCD_2;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 74626866) && (sclk <= 89552239)) {
+		SDRAM_tRP = TRP_2;
+		SDRAM_tRP_num = 2;
+		SDRAM_tRAS = TRAS_4;
+		SDRAM_tRAS_num = 4;
+		SDRAM_tRCD = TRCD_2;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 66666667) && (sclk <= 74626866)) {
+		SDRAM_tRP = TRP_2;
+		SDRAM_tRP_num = 2;
+		SDRAM_tRAS = TRAS_3;
+		SDRAM_tRAS_num = 3;
+		SDRAM_tRCD = TRCD_2;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 59701493) && (sclk <= 66666667)) {
+		SDRAM_tRP = TRP_1;
+		SDRAM_tRP_num = 1;
+		SDRAM_tRAS = TRAS_4;
+		SDRAM_tRAS_num = 4;
+		SDRAM_tRCD = TRCD_1;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 44776119) && (sclk <= 59701493)) {
+		SDRAM_tRP = TRP_1;
+		SDRAM_tRP_num = 1;
+		SDRAM_tRAS = TRAS_3;
+		SDRAM_tRAS_num = 3;
+		SDRAM_tRCD = TRCD_1;
+		SDRAM_tWR = TWR_2;
+	} else if ((sclk > 29850746) && (sclk <= 44776119)) {
+		SDRAM_tRP = TRP_1;
+		SDRAM_tRP_num = 1;
+		SDRAM_tRAS = TRAS_2;
+		SDRAM_tRAS_num = 2;
+		SDRAM_tRCD = TRCD_1;
+		SDRAM_tWR = TWR_2;
+	} else if (sclk <= 29850746) {
+		SDRAM_tRP = TRP_1;
+		SDRAM_tRP_num = 1;
+		SDRAM_tRAS = TRAS_1;
+		SDRAM_tRAS_num = 1;
+		SDRAM_tRCD = TRCD_1;
+		SDRAM_tWR = TWR_2;
+	} else {
+		SDRAM_tRP = TRP_1;
+		SDRAM_tRP_num = 1;
+		SDRAM_tRAS = TRAS_1;
+		SDRAM_tRAS_num = 1;
+		SDRAM_tRCD = TRCD_1;
+		SDRAM_tWR = TWR_2;
+	}
+	/*SDRAM INFORMATION: */
+	SDRAM_Tref = 64;	/* Refresh period in milliseconds */
+	SDRAM_NRA = 4096;	/* Number of row addresses in SDRAM */
+	SDRAM_CL = CL_3;	/* 2 */
+
+	SDRAM_SIZE = EBSZ_64;
+	SDRAM_WIDTH = EBCAW_10;
+
+	mem_SDBCTL = SDRAM_WIDTH | SDRAM_SIZE | EBE;
+
+	/* Equation from section 17 (p17-46) of BF533 HRM */
+	mem_SDRRC =
+	    (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) -
+	    (SDRAM_tRAS_num + SDRAM_tRP_num);
+
+	/* Enable SCLK Out */
+	mem_SDGCTL =
+	    (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR
+	     | PSS);
+
+	SSYNC();
+
+	bfin_write_EBIU_SDGCTL(bfin_write_EBIU_SDGCTL() | 0x1000000);
+	/* Set the SDRAM Refresh Rate control register based on SSCLK value */
+	bfin_write_EBIU_SDRRC(mem_SDRRC);
+
+	/* SDRAM Memory Bank Control Register */
+	bfin_write_EBIU_SDBCTL(mem_SDBCTL);
+
+	/* SDRAM Memory Global Control Register */
+	bfin_write_EBIU_SDGCTL(mem_SDGCTL);
+	SSYNC();
+	return mem_SDRRC;
+}
+
+#endif				/* CONFIG_POST & CONFIG_SYS_POST_MEMORY */