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/pb1x00/pb1x00.c

@@ -0,0 +1,105 @@
+/*
+ * (C) Copyright 2003
+ * Thomas.Lange@corelatus.se
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <mach/au1x00.h>
+#include <asm/mipsregs.h>
+#include <asm/io.h>
+
+phys_size_t initdram(int board_type)
+{
+	/* Sdram is setup by assembler code */
+	/* If memory could be changed, we should return the true value here */
+	return 64*1024*1024;
+}
+
+#define BCSR_PCMCIA_PC0DRVEN		0x0010
+#define BCSR_PCMCIA_PC0RST		0x0080
+
+/* In arch/mips/cpu/cpu.c */
+void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
+
+int checkboard (void)
+{
+#if defined(CONFIG_IDE_PCMCIA) && 0
+	u16 status;
+#endif
+	/* volatile u32 *pcmcia_bcsr = (u32*)(DB1000_BCSR_ADDR+0x10); */
+	volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
+	u32 proc_id;
+
+	*sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
+
+	proc_id = read_c0_prid();
+
+	switch (proc_id >> 24) {
+	case 0:
+		puts ("Board: Pb1000\n");
+		printf ("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
+			(proc_id >> 8) & 0xFF, proc_id & 0xFF);
+		break;
+	case 1:
+		puts ("Board: Pb1500\n");
+		printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
+			(proc_id >> 8) & 0xFF, proc_id & 0xFF);
+		break;
+	case 2:
+		puts ("Board: Pb1100\n");
+		printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
+			(proc_id >> 8) & 0xFF, proc_id & 0xFF);
+		break;
+	default:
+		printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
+	}
+
+	set_io_port_base(0);
+
+#if defined(CONFIG_IDE_PCMCIA) && 0
+	/* Enable 3.3 V on slot 0 ( VCC )
+	   No 5V */
+	status = 4;
+	*pcmcia_bcsr = status;
+
+	status |= BCSR_PCMCIA_PC0DRVEN;
+	*pcmcia_bcsr = status;
+	au_sync();
+
+	udelay(300*1000);
+
+	status |= BCSR_PCMCIA_PC0RST;
+	*pcmcia_bcsr = status;
+	au_sync();
+
+	udelay(100*1000);
+
+	/* PCMCIA is on a 36 bit physical address.
+	   We need to map it into a 32 bit addresses */
+
+#if 0
+	/* We dont need theese unless we run whole pcmcia package */
+	write_one_tlb(20,                 /* index */
+		      0x01ffe000,         /* Pagemask, 16 MB pages */
+		      CONFIG_SYS_PCMCIA_IO_BASE, /* Hi */
+		      0x3C000017,         /* Lo0 */
+		      0x3C200017);        /* Lo1 */
+
+	write_one_tlb(21,                   /* index */
+		      0x01ffe000,           /* Pagemask, 16 MB pages */
+		      CONFIG_SYS_PCMCIA_ATTR_BASE, /* Hi */
+		      0x3D000017,           /* Lo0 */
+		      0x3D200017);          /* Lo1 */
+#endif	/* 0 */
+	write_one_tlb(22,                   /* index */
+		      0x01ffe000,           /* Pagemask, 16 MB pages */
+		      CONFIG_SYS_PCMCIA_MEM_ADDR,  /* Hi */
+		      0x3E000017,           /* Lo0 */
+		      0x3E200017);          /* Lo1 */
+#endif	/* CONFIG_IDE_PCMCIA */
+
+	return 0;
+}