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/arch/arm/mach-exynos/include/mach/spi.h

@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2012 SAMSUNG Electronics
+ * Padmavathi Venna <padma.v@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARCH_EXYNOS_COMMON_SPI_H_
+#define __ASM_ARCH_EXYNOS_COMMON_SPI_H_
+
+#ifndef __ASSEMBLY__
+
+/* SPI peripheral register map; padded to 64KB */
+struct exynos_spi {
+	unsigned int		ch_cfg;		/* 0x00 */
+	unsigned char		reserved0[4];
+	unsigned int		mode_cfg;	/* 0x08 */
+	unsigned int		cs_reg;		/* 0x0c */
+	unsigned char		reserved1[4];
+	unsigned int		spi_sts;	/* 0x14 */
+	unsigned int		tx_data;	/* 0x18 */
+	unsigned int		rx_data;	/* 0x1c */
+	unsigned int		pkt_cnt;	/* 0x20 */
+	unsigned char		reserved2[4];
+	unsigned int		swap_cfg;	/* 0x28 */
+	unsigned int		fb_clk;		/* 0x2c */
+	unsigned char		padding[0xffd0];
+};
+
+#define EXYNOS_SPI_MAX_FREQ	50000000
+
+#define SPI_TIMEOUT_MS		10
+#define SF_READ_DATA_CMD	0x3
+
+/* SPI_CHCFG */
+#define SPI_CH_HS_EN		(1 << 6)
+#define SPI_CH_RST		(1 << 5)
+#define SPI_SLAVE_MODE		(1 << 4)
+#define SPI_CH_CPOL_L		(1 << 3)
+#define SPI_CH_CPHA_B		(1 << 2)
+#define SPI_RX_CH_ON		(1 << 1)
+#define SPI_TX_CH_ON		(1 << 0)
+
+/* SPI_MODECFG */
+#define SPI_MODE_CH_WIDTH_WORD	(0x2 << 29)
+#define SPI_MODE_BUS_WIDTH_WORD	(0x2 << 17)
+
+/* SPI_CSREG */
+#define SPI_SLAVE_SIG_INACT	(1 << 0)
+
+/* SPI_STS */
+#define SPI_ST_TX_DONE		(1 << 25)
+#define SPI_FIFO_LVL_MASK	0x1ff
+#define SPI_TX_LVL_OFFSET	6
+#define SPI_RX_LVL_OFFSET	15
+
+/* Feedback Delay */
+#define SPI_CLK_BYPASS		(0 << 0)
+#define SPI_FB_DELAY_90		(1 << 0)
+#define SPI_FB_DELAY_180	(2 << 0)
+#define SPI_FB_DELAY_270	(3 << 0)
+
+/* Packet Count */
+#define SPI_PACKET_CNT_EN	(1 << 16)
+
+/* Swap config */
+#define SPI_TX_SWAP_EN		(1 << 0)
+#define SPI_TX_BYTE_SWAP	(1 << 2)
+#define SPI_TX_HWORD_SWAP	(1 << 3)
+#define SPI_TX_BYTE_SWAP	(1 << 2)
+#define SPI_RX_SWAP_EN		(1 << 4)
+#define SPI_RX_BYTE_SWAP	(1 << 6)
+#define SPI_RX_HWORD_SWAP	(1 << 7)
+
+#endif /* __ASSEMBLY__ */
+#endif