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/amcc/acadia/Kconfig

@@ -0,0 +1,16 @@
+if TARGET_ACADIA
+
+config SYS_BOARD
+	default "acadia"
+
+config SYS_VENDOR
+	default "amcc"
+
+config SYS_CONFIG_NAME
+	default "acadia"
+
+config DISPLAY_BOARDINFO
+	bool
+	default y
+
+endif

u-boot/board/amcc/acadia/MAINTAINERS

@@ -0,0 +1,6 @@
+ACADIA BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/amcc/acadia/
+F:	include/configs/acadia.h
+F:	configs/acadia_defconfig

u-boot/board/amcc/acadia/Makefile

@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2007
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	= acadia.o cmd_acadia.o memory.o pll.o

u-boot/board/amcc/acadia/acadia.c

@@ -0,0 +1,101 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+
+extern void board_pll_init_f(void);
+
+static void acadia_gpio_init(void)
+{
+	/*
+	 * GPIO0 setup (select GPIO or alternate function)
+	 */
+	out32(GPIO0_OSRL, CONFIG_SYS_GPIO0_OSRL);
+	out32(GPIO0_OSRH, CONFIG_SYS_GPIO0_OSRH);	/* output select */
+	out32(GPIO0_ISR1L, CONFIG_SYS_GPIO0_ISR1L);
+	out32(GPIO0_ISR1H, CONFIG_SYS_GPIO0_ISR1H);	/* input select */
+	out32(GPIO0_TSRL, CONFIG_SYS_GPIO0_TSRL);
+	out32(GPIO0_TSRH, CONFIG_SYS_GPIO0_TSRH);	/* three-state select */
+	out32(GPIO0_TCR, CONFIG_SYS_GPIO0_TCR);  /* enable output driver for outputs */
+
+	/*
+	 * Ultra (405EZ) was nice enough to add another GPIO controller
+	 */
+	out32(GPIO1_OSRH, CONFIG_SYS_GPIO1_OSRH);	/* output select */
+	out32(GPIO1_OSRL, CONFIG_SYS_GPIO1_OSRL);
+	out32(GPIO1_ISR1H, CONFIG_SYS_GPIO1_ISR1H);	/* input select */
+	out32(GPIO1_ISR1L, CONFIG_SYS_GPIO1_ISR1L);
+	out32(GPIO1_TSRH, CONFIG_SYS_GPIO1_TSRH);	/* three-state select */
+	out32(GPIO1_TSRL, CONFIG_SYS_GPIO1_TSRL);
+	out32(GPIO1_TCR, CONFIG_SYS_GPIO1_TCR);  /* enable output driver for outputs */
+}
+
+int board_early_init_f(void)
+{
+	unsigned int reg;
+
+	/* don't reinit PLL when booting via I2C bootstrap option */
+	mfsdr(SDR0_PINSTP, reg);
+	if (reg != 0xf0000000)
+		board_pll_init_f();
+
+	acadia_gpio_init();
+
+	/* Configure 405EZ for NAND usage */
+	mtsdr(SDR0_NAND0, SDR_NAND0_NDEN | SDR_NAND0_NDAREN | SDR_NAND0_NDRBEN);
+	mfsdr(SDR0_ULTRA0, reg);
+	reg &= ~SDR_ULTRA0_CSN_MASK;
+	reg |= (SDR_ULTRA0_CSNSEL0 >> CONFIG_SYS_NAND_CS) |
+		SDR_ULTRA0_NDGPIOBP |
+		SDR_ULTRA0_EBCRDYEN |
+		SDR_ULTRA0_NFSRSTEN;
+	mtsdr(SDR0_ULTRA0, reg);
+
+	/* USB Host core needs this bit set */
+	mfsdr(SDR0_ULTRA1, reg);
+	mtsdr(SDR0_ULTRA1, reg | SDR_ULTRA1_LEDNENABLE);
+
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+	mtdcr(UIC0ER, 0x00000000);	/* disable all ints */
+	mtdcr(UIC0CR, 0x00000010);
+	mtdcr(UIC0PR, 0xFE7FFFF0);	/* set int polarities */
+	mtdcr(UIC0TR, 0x00000010);	/* set int trigger levels */
+	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
+
+	return 0;
+}
+
+int misc_init_f(void)
+{
+	/* Set EPLD to take PHY out of reset */
+	out8(CONFIG_SYS_CPLD_BASE + 0x05, 0x00);
+	udelay(100000);
+
+	return 0;
+}
+
+/*
+ * Check Board Identity:
+ */
+int checkboard(void)
+{
+	char buf[64];
+	int i = getenv_f("serial#", buf, sizeof(buf));
+	u8 rev;
+
+	rev = in8(CONFIG_SYS_CPLD_BASE + 0);
+	printf("Board: Acadia - AMCC PPC405EZ Evaluation Board, Rev. %X", rev);
+
+	if (i > 0) {
+		puts(", serial# ");
+		puts(buf);
+	}
+	putc('\n');
+
+	return (0);
+}

u-boot/board/amcc/acadia/cmd_acadia.c

@@ -0,0 +1,82 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <i2c.h>
+
+static u8 boot_267_nor[] = {
+	0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00,
+	0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00
+};
+
+static u8 boot_267_nand[] = {
+	0xd0, 0x38, 0xc3, 0x50, 0x13, 0x88, 0x8e, 0x00,
+	0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00
+};
+
+static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	u8 chip;
+	u8 *buf;
+	int cpu_freq;
+
+	if (argc < 3)
+		return cmd_usage(cmdtp);
+
+	cpu_freq = simple_strtol(argv[1], NULL, 10);
+	if (cpu_freq != 267) {
+		printf("Unsupported cpu-frequency - only 267 supported\n");
+		return 1;
+	}
+
+	/* use 0x50 as I2C EEPROM address for now */
+	chip = 0x50;
+
+	if ((strcmp(argv[2], "nor") != 0) &&
+	    (strcmp(argv[2], "nand") != 0)) {
+		printf("Unsupported boot-device - only nor|nand support\n");
+		return 1;
+	}
+
+	if (strcmp(argv[2], "nand") == 0) {
+		switch (cpu_freq) {
+		case 267:
+			buf = boot_267_nand;
+			break;
+		default:
+			break;
+		}
+	} else {
+		switch (cpu_freq) {
+		case 267:
+			buf = boot_267_nor;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (i2c_write(chip, 0, 1, buf, 16) != 0)
+		printf("Error writing to EEPROM at address 0x%x\n", chip);
+	udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
+	if (i2c_write(chip, 0x10, 1, buf+16, 4) != 0)
+		printf("Error2 writing to EEPROM at address 0x%x\n", chip);
+
+	printf("Done\n");
+	printf("Please power-cycle the board for the changes to take effect\n");
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	bootstrap,	3,	0,	do_bootstrap,
+	"program the I2C bootstrap EEPROM",
+	"<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM"
+);

u-boot/board/amcc/acadia/config.mk

@@ -0,0 +1,14 @@
+#
+# (C) Copyright 2007-2010
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+#
+# AMCC 405EZ Reference Platform (Acadia) board
+#
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif

u-boot/board/amcc/acadia/memory.c

@@ -0,0 +1,81 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/ppc4xx-gpio.h>
+
+extern void board_pll_init_f(void);
+
+static void cram_bcr_write(u32 wr_val)
+{
+	wr_val <<= 2;
+
+	/* set CRAM_CRE to 1 */
+	gpio_write_bit(CONFIG_SYS_GPIO_CRAM_CRE, 1);
+
+	/* Write BCR to CRAM on CS1 */
+	out32(wr_val + 0x00200000, 0);
+	debug("CRAM VAL: %08x for CS1 ", wr_val + 0x00200000);
+
+	/* Write BCR to CRAM on CS2 */
+	out32(wr_val + 0x02200000, 0);
+	debug("CRAM VAL: %08x for CS2\n", wr_val + 0x02200000);
+
+	sync();
+	eieio();
+
+	/* set CRAM_CRE back to 0 (normal operation) */
+	gpio_write_bit(CONFIG_SYS_GPIO_CRAM_CRE, 0);
+
+	return;
+}
+
+phys_size_t initdram(int board_type)
+{
+	int i;
+	u32 val;
+
+	/* 1. EBC need to program READY, CLK, ADV for ASync mode */
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CLK, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_ADV, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CRE, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_WAIT, GPIO_IN, GPIO_SEL, GPIO_OUT_NO_CHG);
+
+	/* 2. EBC in Async mode */
+	mtebc(PB1AP, 0x078F1EC0);
+	mtebc(PB2AP, 0x078F1EC0);
+	mtebc(PB1CR, 0x000BC000);
+	mtebc(PB2CR, 0x020BC000);
+
+	/* 3. Set CRAM in Sync mode */
+	cram_bcr_write(0x7012);		/* CRAM burst setting */
+
+	/* 4. EBC in Sync mode */
+	mtebc(PB1AP, 0x9C0201C0);
+	mtebc(PB2AP, 0x9C0201C0);
+
+	/* Set GPIO pins back to alternate function */
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CLK, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_ADV, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
+
+	/* Config EBC to use RDY */
+	mfsdr(SDR0_ULTRA0, val);
+	mtsdr(SDR0_ULTRA0, val | SDR_ULTRA0_EBCRDYEN);
+
+	/* Wait a short while, since for NAND booting this is too fast */
+	for (i=0; i<200000; i++)
+		;
+
+	return (CONFIG_SYS_MBYTES_RAM << 20);
+}

u-boot/board/amcc/acadia/pll.c

@@ -0,0 +1,137 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/ppc405.h>
+
+/* test-only: move into cpu directory!!! */
+
+#if defined(PLLMR0_200_133_66)
+void board_pll_init_f(void)
+{
+	/*
+	 * set PLL clocks based on input sysclk is 33M
+	 *
+	 * ----------------------------------
+	 * | CLK   | FREQ (MHz) | DIV RATIO |
+	 * ----------------------------------
+	 * | CPU   |  200.0     |   4 (0x02)|
+	 * | PLB   |  133.3     |   6 (0x06)|
+	 * | OPB   |   66.6     |  12 (0x0C)|
+	 * | EBC   |   66.6     |  12 (0x0C)|
+	 * | SPI   |   66.6     |  12 (0x0C)|
+	 * | UART0 |   10.0     |  40 (0x28)|
+	 * | UART1 |   10.0     |  40 (0x28)|
+	 * | DAC   |    2.0     | 200 (0xC8)|
+	 * | ADC   |    2.0     | 200 (0xC8)|
+	 * | PWM   |  100.0     |   4 (0x04)|
+	 * | EMAC  |   25.0     |  16 (0x10)|
+	 * -----------------------------------
+	 */
+
+	/* Initialize PLL */
+	mtcpr(CPR0_PLLC, 0x0000033c);
+	mtcpr(CPR0_PLLD, 0x0c010200);
+	mtcpr(CPR0_PRIMAD, 0x04060c0c);
+	mtcpr(CPR0_PERD0, 0x000c0000);	/* SPI clk div. eq. OPB clk div. */
+	mtcpr(CPR0_CLKUPD, 0x40000000);
+}
+
+#elif defined(PLLMR0_266_160_80)
+
+void board_pll_init_f(void)
+{
+	/*
+	 * set PLL clocks based on input sysclk is 33M
+	 *
+	 * ----------------------------------
+	 * | CLK   | FREQ (MHz) | DIV RATIO |
+	 * ----------------------------------
+	 * | CPU   |  266.64    |   3       |
+	 * | PLB   |  159.98    |   5 (0x05)|
+	 * | OPB   |   79.99    |  10 (0x0A)|
+	 * | EBC   |   79.99    |  10 (0x0A)|
+	 * | SPI   |   79.99    |  10 (0x0A)|
+	 * | UART0 |   28.57    |   7 (0x07)|
+	 * | UART1 |   28.57    |   7 (0x07)|
+	 * | DAC   |   28.57    |   7 (0xA7)|
+	 * | ADC   |    4       |  50 (0x32)|
+	 * | PWM   |   28.57    |   7 (0x07)|
+	 * | EMAC  |    4       |  50 (0x32)|
+	 * -----------------------------------
+	 */
+
+	/* Initialize PLL */
+	mtcpr(CPR0_PLLC, 0x20000238);
+	mtcpr(CPR0_PLLD, 0x03010400);
+	mtcpr(CPR0_PRIMAD, 0x03050a0a);
+	mtcpr(CPR0_PERC0, 0x00000000);
+	mtcpr(CPR0_PERD0, 0x070a0707);	/* SPI clk div. eq. OPB clk div. */
+	mtcpr(CPR0_PERD1, 0x07323200);
+	mtcpr(CPR0_CLKUP, 0x40000000);
+}
+
+#elif defined(PLLMR0_333_166_83)
+
+void board_pll_init_f(void)
+{
+	/*
+	 * set PLL clocks based on input sysclk is 33M
+	 *
+	 * ----------------------------------
+	 * | CLK   | FREQ (MHz) | DIV RATIO |
+	 * ----------------------------------
+	 * | CPU   |  333.33    |   2       |
+	 * | PLB   |  166.66    |   4 (0x04)|
+	 * | OPB   |   83.33    |   8 (0x08)|
+	 * | EBC   |   83.33    |   8 (0x08)|
+	 * | SPI   |   83.33    |   8 (0x08)|
+	 * | UART0 |   16.66    |   5 (0x05)|
+	 * | UART1 |   16.66    |   5 (0x05)|
+	 * | DAC   |   ????     | 166 (0xA6)|
+	 * | ADC   |   ????     | 166 (0xA6)|
+	 * | PWM   |   41.66    |   3 (0x03)|
+	 * | EMAC  |   ????     |   3 (0x03)|
+	 * -----------------------------------
+	 */
+
+	/* Initialize PLL */
+	mtcpr(CPR0_PLLC, 0x0000033C);
+	mtcpr(CPR0_PLLD, 0x0a010000);
+	mtcpr(CPR0_PRIMAD, 0x02040808);
+	mtcpr(CPR0_PERD0, 0x02080505);	/* SPI clk div. eq. OPB clk div. */
+	mtcpr(CPR0_PERD1, 0xA6A60300);
+	mtcpr(CPR0_CLKUP, 0x40000000);
+}
+
+#elif defined(PLLMR0_100_100_12)
+
+void board_pll_init_f(void)
+{
+	/*
+	 * set PLL clocks based on input sysclk is 33M
+	 *
+	 * ----------------------
+	 * | CLK   | FREQ (MHz) |
+	 * ----------------------
+	 * | CPU   |  100.00    |
+	 * | PLB   |  100.00    |
+	 * | OPB   |   12.00    |
+	 * | EBC   |   49.00    |
+	 * ----------------------
+	 */
+
+	/* Initialize PLL */
+	mtcpr(CPR0_PLLC, 0x000003BC);
+	mtcpr(CPR0_PLLD, 0x06060600);
+	mtcpr(CPR0_PRIMAD, 0x02020004);
+	mtcpr(CPR0_PERD0, 0x04002828);	/* SPI clk div. eq. OPB clk div. */
+	mtcpr(CPR0_PERD1, 0xC8C81600);
+	mtcpr(CPR0_CLKUP, 0x40000000);
+}
+#endif				/* CPU_<speed>_405EZ */