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/mx53smd/mx53smd.c

@@ -0,0 +1,156 @@
+/*
+ * (C) Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/iomux-mx53.h>
+#include <asm/errno.h>
+#include <netdev.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	u32 size1, size2;
+
+	size1 = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
+	size2 = get_ram_size((void *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
+
+	gd->ram_size = size1 + size2;
+
+	return 0;
+}
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
+}
+
+#define UART_PAD_CTRL	(PAD_CTL_HYS | PAD_CTL_DSE_HIGH | \
+			 PAD_CTL_PUS_100K_UP | PAD_CTL_ODE)
+
+static void setup_iomux_uart(void)
+{
+	static const iomux_v3_cfg_t uart_pads[] = {
+		NEW_PAD_CTRL(MX53_PAD_CSI0_DAT11__UART1_RXD_MUX, UART_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_CSI0_DAT10__UART1_TXD_MUX, UART_PAD_CTRL),
+	};
+
+	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
+}
+
+static void setup_iomux_fec(void)
+{
+	static const iomux_v3_cfg_t fec_pads[] = {
+		NEW_PAD_CTRL(MX53_PAD_FEC_MDIO__FEC_MDIO, PAD_CTL_HYS |
+			PAD_CTL_DSE_HIGH | PAD_CTL_PUS_22K_UP | PAD_CTL_ODE),
+		NEW_PAD_CTRL(MX53_PAD_FEC_MDC__FEC_MDC, PAD_CTL_DSE_HIGH),
+		NEW_PAD_CTRL(MX53_PAD_FEC_RXD1__FEC_RDATA_1,
+				PAD_CTL_HYS | PAD_CTL_PKE),
+		NEW_PAD_CTRL(MX53_PAD_FEC_RXD0__FEC_RDATA_0,
+				PAD_CTL_HYS | PAD_CTL_PKE),
+		NEW_PAD_CTRL(MX53_PAD_FEC_TXD1__FEC_TDATA_1, PAD_CTL_DSE_HIGH),
+		NEW_PAD_CTRL(MX53_PAD_FEC_TXD0__FEC_TDATA_0, PAD_CTL_DSE_HIGH),
+		NEW_PAD_CTRL(MX53_PAD_FEC_TX_EN__FEC_TX_EN, PAD_CTL_DSE_HIGH),
+		NEW_PAD_CTRL(MX53_PAD_FEC_REF_CLK__FEC_TX_CLK,
+				PAD_CTL_HYS | PAD_CTL_PKE),
+		NEW_PAD_CTRL(MX53_PAD_FEC_RX_ER__FEC_RX_ER,
+				PAD_CTL_HYS | PAD_CTL_PKE),
+		NEW_PAD_CTRL(MX53_PAD_FEC_CRS_DV__FEC_RX_DV,
+				PAD_CTL_HYS | PAD_CTL_PKE),
+	};
+
+	imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
+}
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg esdhc_cfg[1] = {
+	{MMC_SDHC1_BASE_ADDR},
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	imx_iomux_v3_setup_pad(MX53_PAD_EIM_DA13__GPIO3_13);
+	gpio_direction_input(IMX_GPIO_NR(3, 13));
+	return !gpio_get_value(IMX_GPIO_NR(3, 13));
+}
+
+#define SD_CMD_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_DSE_HIGH | \
+				 PAD_CTL_PUS_100K_UP)
+#define SD_PAD_CTRL		(PAD_CTL_HYS | PAD_CTL_PUS_47K_UP | \
+				 PAD_CTL_DSE_HIGH)
+
+int board_mmc_init(bd_t *bis)
+{
+	static const iomux_v3_cfg_t sd1_pads[] = {
+		NEW_PAD_CTRL(MX53_PAD_SD1_CMD__ESDHC1_CMD, SD_CMD_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_SD1_CLK__ESDHC1_CLK, SD_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_SD1_DATA0__ESDHC1_DAT0, SD_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_SD1_DATA1__ESDHC1_DAT1, SD_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_SD1_DATA2__ESDHC1_DAT2, SD_PAD_CTRL),
+		NEW_PAD_CTRL(MX53_PAD_SD1_DATA3__ESDHC1_DAT3, SD_PAD_CTRL),
+		MX53_PAD_EIM_DA13__GPIO3_13,
+	};
+
+	u32 index;
+	int ret;
+
+	esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+
+	for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM; index++) {
+		switch (index) {
+		case 0:
+			imx_iomux_v3_setup_multiple_pads(sd1_pads,
+							 ARRAY_SIZE(sd1_pads));
+			break;
+
+		default:
+			printf("Warning: you configured more ESDHC controller"
+				"(%d) as supported by the board(1)\n",
+				CONFIG_SYS_FSL_ESDHC_NUM);
+			return -EINVAL;
+		}
+		ret = fsl_esdhc_initialize(bis, &esdhc_cfg[index]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+#endif
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+	setup_iomux_fec();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: MX53SMD\n");
+
+	return 0;
+}