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/ve8313/ve8313.c

@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) Freescale Semiconductor, Inc. 2006-2007
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * (C) Copyright 2010
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <libfdt.h>
+#include <pci.h>
+#include <mpc83xx.h>
+#include <ns16550.h>
+#include <nand.h>
+
+#include <asm/bitops.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern void disable_addr_trans (void);
+extern void enable_addr_trans (void);
+
+int checkboard(void)
+{
+	puts("Board: ve8313\n");
+	return 0;
+}
+
+static long fixed_sdram(void)
+{
+	u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
+
+#ifndef CONFIG_SYS_RAMBOOT
+	volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
+	u32 msize_log2 = __ilog2(msize);
+
+	out_be32(&im->sysconf.ddrlaw[0].bar,
+		(CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000));
+	out_be32(&im->sysconf.ddrlaw[0].ar, (LBLAWAR_EN | (msize_log2 - 1)));
+	out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
+
+	/*
+	 * Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
+	 * or the DDR2 controller may fail to initialize correctly.
+	 */
+	__udelay(50000);
+
+#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
+#warning Chip select bounds is only configurable in 16MB increments
+#endif
+	out_be32(&im->ddr.csbnds[0].csbnds,
+		((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
+		(((CONFIG_SYS_DDR_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) &
+			CSBNDS_EA));
+	out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);
+
+	/* Currently we use only one CS, so disable the other bank. */
+	out_be32(&im->ddr.cs_config[1], 0);
+
+	out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
+	out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
+	out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
+	out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
+	out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
+
+	out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_SDRAM_CFG);
+
+	out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_SDRAM_CFG2);
+	out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
+	out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE_2);
+
+	out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
+	sync();
+
+	/* enable DDR controller */
+	setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
+
+	/* now check the real size */
+	disable_addr_trans ();
+	msize = get_ram_size (CONFIG_SYS_DDR_BASE, msize);
+	enable_addr_trans ();
+#endif
+
+	return msize;
+}
+
+phys_size_t initdram(int board_type)
+{
+	volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile fsl_lbc_t *lbc = &im->im_lbc;
+	u32 msize;
+
+	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
+		return -1;
+
+	/* DDR SDRAM - Main SODIMM */
+	msize = fixed_sdram();
+
+	/* Local Bus setup lbcr and mrtpr */
+	out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
+	out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
+	sync();
+
+	/* return total bus SDRAM size(bytes)  -- DDR */
+	return msize;
+}
+
+#define VE8313_WDT_EN	0x00020000
+#define VE8313_WDT_TRIG	0x00040000
+
+int board_early_init_f (void)
+{
+	volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
+
+#if defined(CONFIG_HW_WATCHDOG)
+	/* enable WDT */
+	clrbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
+#else
+	/* disable WDT */
+	setbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
+#endif
+	/* set WDT pins as output */
+	setbits_be32(&gpio->dir, VE8313_WDT_EN | VE8313_WDT_TRIG);
+
+	return 0;
+}
+
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
+{
+	volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
+	unsigned long reg;
+
+	reg = in_be32(&gpio->dat);
+	if (reg & VE8313_WDT_TRIG)
+		clrbits_be32(&gpio->dat, VE8313_WDT_TRIG);
+	else
+		setbits_be32(&gpio->dat, VE8313_WDT_TRIG);
+}
+#endif
+
+
+#if defined(CONFIG_PCI)
+static struct pci_region pci_regions[] = {
+	{
+		bus_start: CONFIG_SYS_PCI1_MEM_BASE,
+		phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
+		size: CONFIG_SYS_PCI1_MEM_SIZE,
+		flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
+		phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
+		size: CONFIG_SYS_PCI1_MMIO_SIZE,
+		flags: PCI_REGION_MEM
+	},
+	{
+		bus_start: CONFIG_SYS_PCI1_IO_BASE,
+		phys_start: CONFIG_SYS_PCI1_IO_PHYS,
+		size: CONFIG_SYS_PCI1_IO_SIZE,
+		flags: PCI_REGION_IO
+	}
+};
+
+void pci_init_board(void)
+{
+	volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
+	volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
+	volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
+	struct pci_region *reg[] = { pci_regions };
+
+	/* Enable all 3 PCI_CLK_OUTPUTs. */
+	setbits_be32(&clk->occr, 0xe0000000);
+
+	/*
+	 * Configure PCI Local Access Windows
+	 */
+	out_be32(&pci_law[0].bar, CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR);
+	out_be32(&pci_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
+
+	out_be32(&pci_law[1].bar, CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR);
+	out_be32(&pci_law[1].ar, LBLAWAR_EN | LBLAWAR_1MB);
+
+	mpc83xx_pci_init(1, reg);
+}
+#endif
+
+#if defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+#ifdef CONFIG_PCI
+	ft_pci_setup(blob, bd);
+#endif
+
+	return 0;
+}
+#endif