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/powerpc/cpu/mpc5xxx/ide.c

@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright 2004
+ * Pierre AUBERT, Staubli Faverges, <p.aubert@staubli.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Init is derived from Linux code.
+ */
+#include <common.h>
+
+#if defined(CONFIG_CMD_IDE)
+#include <mpc5xxx.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define CALC_TIMING(t) (t + period - 1) / period
+
+#ifdef CONFIG_IDE_RESET
+extern void init_ide_reset (void);
+#endif
+
+int ide_preinit (void)
+{
+	long period, t0, t1, t2_8, t2_16, t4, ta;
+	vu_long reg;
+	struct mpc5xxx_sdma *psdma = (struct mpc5xxx_sdma *) MPC5XXX_SDMA;
+
+	reg = *(vu_long *) MPC5XXX_GPS_PORT_CONFIG;
+#if defined(CONFIG_SYS_ATA_CS_ON_I2C2)
+	/* ATA cs0/1 on i2c2 clk/io */
+	reg = (reg & ~0x03000000ul) | 0x02000000ul;
+#elif defined(CONFIG_SYS_ATA_CS_ON_TIMER01)
+	/* ATA cs0/1 on Timer 0/1 */
+	reg = (reg & ~0x03000000ul) | 0x03000000ul;
+#else
+	/* ATA cs0/1 on Local Plus cs4/5 */
+	reg = (reg & ~0x03000000ul) | 0x01000000ul;
+#endif	/* CONFIG_TOTAL5200 */
+	*(vu_long *) MPC5XXX_GPS_PORT_CONFIG = reg;
+
+	/* All sample codes do that... */
+	*(vu_long *) MPC5XXX_ATA_SHARE_COUNT = 0;
+
+	/* Configure and reset host */
+	*(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY |
+		MPC5xxx_ATA_HOSTCONF_SMR | MPC5xxx_ATA_HOSTCONF_FR;
+	udelay (10);
+	*(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY;
+
+	/* Disable prefetch on Commbus */
+	psdma->PtdCntrl |= 1;
+
+	/* Init timings : we use PIO mode 0 timings */
+	period = 1000000000 / gd->arch.ipb_clk;	/* period in ns */
+
+	t0 = CALC_TIMING (600);
+	t2_8 = CALC_TIMING (290);
+	t2_16 = CALC_TIMING (165);
+	reg = (t0 << 24) | (t2_8 << 16) | (t2_16 << 8);
+	*(vu_long *) MPC5XXX_ATA_PIO1 = reg;
+
+	t4 = CALC_TIMING (30);
+	t1 = CALC_TIMING (70);
+	ta = CALC_TIMING (35);
+	reg = (t4 << 24) | (t1 << 16) | (ta << 8);
+
+	*(vu_long *) MPC5XXX_ATA_PIO2 = reg;
+
+#ifdef CONFIG_IDE_RESET
+	init_ide_reset ();
+#endif /* CONFIG_IDE_RESET */
+
+	return (0);
+}
+#endif