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/avr32/cpu/Makefile

@@ -0,0 +1,21 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# Copyright (C) 2005-2006 Atmel Corporation.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+extra-y			+= start.o
+
+obj-y			+= cpu.o
+obj-$(CONFIG_SYS_HSDRAMC) += hsdramc.o
+obj-y			+= exception.o
+obj-y			+= cache.o
+obj-y			+= interrupts.o
+obj-$(CONFIG_PORTMUX_PIO) += portmux-pio.o
+obj-$(CONFIG_PORTMUX_GPIO) += portmux-gpio.o
+obj-y += mmc.o
+
+obj-$(if $(filter at32ap700x,$(SOC)),y) += at32ap700x/

u-boot/arch/avr32/cpu/at32ap700x/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2005-2006 Atmel Corporation
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= portmux.o clk.o mmu.o

u-boot/arch/avr32/cpu/at32ap700x/clk.c

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2005-2008 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/io.h>
+
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/portmux.h>
+
+#include "sm.h"
+
+void clk_init(void)
+{
+	uint32_t cksel;
+
+	/* in case of soft resets, disable watchdog */
+	sm_writel(WDT_CTRL, SM_BF(KEY, 0x55));
+	sm_writel(WDT_CTRL, SM_BF(KEY, 0xaa));
+
+#ifdef CONFIG_PLL
+	/* Initialize the PLL */
+	sm_writel(PM_PLL0, (SM_BF(PLLCOUNT, CONFIG_SYS_PLL0_SUPPRESS_CYCLES)
+			    | SM_BF(PLLMUL, CONFIG_SYS_PLL0_MUL - 1)
+			    | SM_BF(PLLDIV, CONFIG_SYS_PLL0_DIV - 1)
+			    | SM_BF(PLLOPT, CONFIG_SYS_PLL0_OPT)
+			    | SM_BF(PLLOSC, 0)
+			    | SM_BIT(PLLEN)));
+
+	/* Wait for lock */
+	while (!(sm_readl(PM_ISR) & SM_BIT(LOCK0))) ;
+#endif
+
+	/* Set up clocks for the CPU and all peripheral buses */
+	cksel = 0;
+	if (CONFIG_SYS_CLKDIV_CPU)
+		cksel |= SM_BIT(CPUDIV) | SM_BF(CPUSEL, CONFIG_SYS_CLKDIV_CPU - 1);
+	if (CONFIG_SYS_CLKDIV_HSB)
+		cksel |= SM_BIT(HSBDIV) | SM_BF(HSBSEL, CONFIG_SYS_CLKDIV_HSB - 1);
+	if (CONFIG_SYS_CLKDIV_PBA)
+		cksel |= SM_BIT(PBADIV) | SM_BF(PBASEL, CONFIG_SYS_CLKDIV_PBA - 1);
+	if (CONFIG_SYS_CLKDIV_PBB)
+		cksel |= SM_BIT(PBBDIV) | SM_BF(PBBSEL, CONFIG_SYS_CLKDIV_PBB - 1);
+	sm_writel(PM_CKSEL, cksel);
+
+#ifdef CONFIG_PLL
+	/* Use PLL0 as main clock */
+	sm_writel(PM_MCCTRL, SM_BIT(PLLSEL));
+
+#ifdef CONFIG_LCD
+	/* Set up pixel clock for the LCDC */
+	sm_writel(PM_GCCTRL(7), SM_BIT(PLLSEL) | SM_BIT(CEN));
+#endif
+#endif
+}
+
+unsigned long __gclk_set_rate(unsigned int id, enum gclk_parent parent,
+		unsigned long rate, unsigned long parent_rate)
+{
+	unsigned long divider;
+
+	if (rate == 0 || parent_rate == 0) {
+		sm_writel(PM_GCCTRL(id), 0);
+		return 0;
+	}
+
+	divider = (parent_rate + rate / 2) / rate;
+	if (divider <= 1) {
+		sm_writel(PM_GCCTRL(id), parent | SM_BIT(CEN));
+		rate = parent_rate;
+	} else {
+		divider = min(255UL, divider / 2 - 1);
+		sm_writel(PM_GCCTRL(id), parent | SM_BIT(CEN) | SM_BIT(DIVEN)
+				| SM_BF(DIV, divider));
+		rate = parent_rate / (2 * (divider + 1));
+	}
+
+	return rate;
+}

u-boot/arch/avr32/cpu/at32ap700x/mmu.c

@@ -0,0 +1,78 @@
+#include <common.h>
+#include <asm/arch/mmu.h>
+#include <asm/sysreg.h>
+
+void mmu_init_r(unsigned long dest_addr)
+{
+	uintptr_t	vmr_table_addr;
+
+	/* Round monitor address down to the nearest page boundary */
+	dest_addr &= MMU_PAGE_ADDR_MASK;
+
+	/* Initialize TLB entry 0 to cover the monitor, and lock it */
+	sysreg_write(TLBEHI, dest_addr | SYSREG_BIT(TLBEHI_V));
+	sysreg_write(TLBELO, dest_addr | MMU_VMR_CACHE_WRBACK);
+	sysreg_write(MMUCR, SYSREG_BF(DRP, 0) | SYSREG_BF(DLA, 1)
+			| SYSREG_BIT(MMUCR_S) | SYSREG_BIT(M));
+	__builtin_tlbw();
+
+	/*
+	 * Calculate the address of the VM range table in a PC-relative
+	 * manner to make sure we hit the SDRAM and not the flash.
+	 */
+	vmr_table_addr = (uintptr_t)&mmu_vmr_table;
+	sysreg_write(PTBR, vmr_table_addr);
+	printf("VMR table @ 0x%08lx\n", vmr_table_addr);
+
+	/* Enable paging */
+	sysreg_write(MMUCR, SYSREG_BF(DRP, 1) | SYSREG_BF(DLA, 1)
+			| SYSREG_BIT(MMUCR_S) | SYSREG_BIT(M) | SYSREG_BIT(E));
+}
+
+int mmu_handle_tlb_miss(void)
+{
+	const struct mmu_vm_range *vmr_table;
+	const struct mmu_vm_range *vmr;
+	unsigned int fault_pgno;
+	int first, last;
+
+	fault_pgno = sysreg_read(TLBEAR) >> MMU_PAGE_SHIFT;
+	vmr_table = (const struct mmu_vm_range *)sysreg_read(PTBR);
+
+	/* Do a binary search through the VM ranges */
+	first = 0;
+	last = CONFIG_SYS_NR_VM_REGIONS;
+	while (first < last) {
+		unsigned int start;
+		int middle;
+
+		/* Pick the entry in the middle of the remaining range */
+		middle = (first + last) >> 1;
+		vmr = &vmr_table[middle];
+		start = vmr->virt_pgno;
+
+		/* Do the bisection thing */
+		if (fault_pgno < start) {
+			last = middle;
+		} else if (fault_pgno >= (start + vmr->nr_pages)) {
+			first = middle + 1;
+		} else {
+			/* Got it; let's slam it into the TLB */
+			uint32_t tlbelo;
+
+			tlbelo = vmr->phys & ~MMU_PAGE_ADDR_MASK;
+			tlbelo |= fault_pgno << MMU_PAGE_SHIFT;
+			sysreg_write(TLBELO, tlbelo);
+			__builtin_tlbw();
+
+			/* Zero means success */
+			return 0;
+		}
+	}
+
+	/*
+	 * Didn't find any matching entries. Return a nonzero value to
+	 * indicate that this should be treated as a fatal exception.
+	 */
+	return -1;
+}

u-boot/arch/avr32/cpu/at32ap700x/portmux.c

@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2006, 2008 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/io.h>
+
+#include <asm/arch/chip-features.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/portmux.h>
+
+/*
+ * Lots of small functions here. We depend on --gc-sections getting
+ * rid of the ones we don't need.
+ */
+void portmux_enable_ebi(unsigned int bus_width, unsigned int addr_width,
+		unsigned long flags, unsigned long drive_strength)
+{
+	unsigned long porte_mask = 0;
+
+	if (bus_width > 16)
+		portmux_select_peripheral(PORTMUX_PORT_E, 0xffff,
+				PORTMUX_FUNC_A, PORTMUX_BUSKEEPER);
+	if (addr_width > 23)
+		porte_mask |= (((1 << (addr_width - 23)) - 1) & 7) << 16;
+	if (flags & PORTMUX_EBI_CS(2))
+		porte_mask |= 1 << 25;
+	if (flags & PORTMUX_EBI_CS(4))
+		porte_mask |= 1 << 21;
+	if (flags & PORTMUX_EBI_CS(5))
+		porte_mask |= 1 << 22;
+	if (flags & (PORTMUX_EBI_CF(0) | PORTMUX_EBI_CF(1)))
+		porte_mask |= (1 << 19) | (1 << 20) | (1 << 23);
+
+	portmux_select_peripheral(PORTMUX_PORT_E, porte_mask,
+			PORTMUX_FUNC_A, 0);
+
+	if (flags & PORTMUX_EBI_NWAIT)
+		portmux_select_peripheral(PORTMUX_PORT_E, 1 << 24,
+				PORTMUX_FUNC_A, PORTMUX_PULL_UP);
+}
+
+#ifdef AT32AP700x_CHIP_HAS_MACB
+void portmux_enable_macb0(unsigned long flags, unsigned long drive_strength)
+{
+	unsigned long portc_mask;
+
+	portc_mask = (1 << 3)	/* TXD0	*/
+		| (1 << 4)	/* TXD1	*/
+		| (1 << 7)	/* TXEN	*/
+		| (1 << 8)	/* TXCK */
+		| (1 << 9)	/* RXD0	*/
+		| (1 << 10)	/* RXD1	*/
+		| (1 << 13)	/* RXER	*/
+		| (1 << 15)	/* RXDV	*/
+		| (1 << 16)	/* MDC	*/
+		| (1 << 17);	/* MDIO	*/
+
+	if (flags & PORTMUX_MACB_MII)
+		portc_mask |= (1 << 0)	/* COL	*/
+			| (1 << 1)	/* CRS	*/
+			| (1 << 2)	/* TXER	*/
+			| (1 << 5)	/* TXD2	*/
+			| (1 << 6)	/* TXD3 */
+			| (1 << 11)	/* RXD2	*/
+			| (1 << 12)	/* RXD3	*/
+			| (1 << 14);	/* RXCK	*/
+
+	if (flags & PORTMUX_MACB_SPEED)
+		portc_mask |= (1 << 18);/* SPD	*/
+
+	/* REVISIT: Some pins are probably pure outputs */
+	portmux_select_peripheral(PORTMUX_PORT_C, portc_mask,
+			PORTMUX_FUNC_A, PORTMUX_BUSKEEPER);
+}
+
+void portmux_enable_macb1(unsigned long flags, unsigned long drive_strength)
+{
+	unsigned long portc_mask = 0;
+	unsigned long portd_mask;
+
+	portd_mask = (1 << 13)	/* TXD0	*/
+		| (1 << 14)	/* TXD1	*/
+		| (1 << 11)	/* TXEN	*/
+		| (1 << 12)	/* TXCK */
+		| (1 << 10)	/* RXD0	*/
+		| (1 << 6)	/* RXD1	*/
+		| (1 << 5)	/* RXER	*/
+		| (1 << 4)	/* RXDV	*/
+		| (1 << 3)	/* MDC	*/
+		| (1 << 2);	/* MDIO	*/
+
+	if (flags & PORTMUX_MACB_MII)
+		portc_mask = (1 << 19)	/* COL	*/
+			| (1 << 23)	/* CRS	*/
+			| (1 << 26)	/* TXER	*/
+			| (1 << 27)	/* TXD2	*/
+			| (1 << 28)	/* TXD3 */
+			| (1 << 29)	/* RXD2	*/
+			| (1 << 30)	/* RXD3	*/
+			| (1 << 24);	/* RXCK	*/
+
+	if (flags & PORTMUX_MACB_SPEED)
+		portd_mask |= (1 << 15);/* SPD	*/
+
+	/* REVISIT: Some pins are probably pure outputs */
+	portmux_select_peripheral(PORTMUX_PORT_D, portd_mask,
+			PORTMUX_FUNC_B, PORTMUX_BUSKEEPER);
+	portmux_select_peripheral(PORTMUX_PORT_C, portc_mask,
+			PORTMUX_FUNC_B, PORTMUX_BUSKEEPER);
+}
+#endif
+
+#ifdef AT32AP700x_CHIP_HAS_MMCI
+void portmux_enable_mmci(unsigned int slot, unsigned long flags,
+		unsigned long drive_strength)
+{
+	unsigned long mask;
+	unsigned long portmux_flags = PORTMUX_PULL_UP;
+
+	/* First, the common CLK signal. It doesn't need a pull-up */
+	portmux_select_peripheral(PORTMUX_PORT_A, 1 << 10,
+			PORTMUX_FUNC_A, 0);
+
+	if (flags & PORTMUX_MMCI_EXT_PULLUP)
+		portmux_flags = 0;
+
+	/* Then, the per-slot signals */
+	switch (slot) {
+	case 0:
+		mask = (1 << 11) | (1 << 12);	/* CMD and DATA0 */
+		if (flags & PORTMUX_MMCI_4BIT)
+			/* DATA1..DATA3 */
+			mask |= (1 << 13) | (1 << 14) | (1 << 15);
+		portmux_select_peripheral(PORTMUX_PORT_A, mask,
+				PORTMUX_FUNC_A, portmux_flags);
+		break;
+	case 1:
+		mask = (1 << 6) | (1 << 7);	/* CMD and DATA0 */
+		if (flags & PORTMUX_MMCI_4BIT)
+			/* DATA1..DATA3 */
+			mask |= (1 << 8) | (1 << 9) | (1 << 10);
+		portmux_select_peripheral(PORTMUX_PORT_B, mask,
+				PORTMUX_FUNC_B, portmux_flags);
+		break;
+	}
+}
+#endif
+
+#ifdef AT32AP700x_CHIP_HAS_SPI
+void portmux_enable_spi0(unsigned long cs_mask, unsigned long drive_strength)
+{
+	unsigned long pin_mask;
+
+	/* MOSI and SCK */
+	portmux_select_peripheral(PORTMUX_PORT_A, (1 << 1) | (1 << 2),
+			PORTMUX_FUNC_A, 0);
+	/* MISO may float */
+	portmux_select_peripheral(PORTMUX_PORT_A, 1 << 0,
+			PORTMUX_FUNC_A, PORTMUX_BUSKEEPER);
+
+	/* Set up NPCSx as GPIO outputs, initially high */
+	pin_mask = (cs_mask & 7) << 3;
+	if (cs_mask & (1 << 3))
+		pin_mask |= 1 << 20;
+
+	portmux_select_gpio(PORTMUX_PORT_A, pin_mask,
+			PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH);
+}
+
+void portmux_enable_spi1(unsigned long cs_mask, unsigned long drive_strength)
+{
+	/* MOSI and SCK */
+	portmux_select_peripheral(PORTMUX_PORT_B, (1 << 1) | (1 << 5),
+			PORTMUX_FUNC_B, 0);
+	/* MISO may float */
+	portmux_select_peripheral(PORTMUX_PORT_B, 1 << 0,
+			PORTMUX_FUNC_B, PORTMUX_BUSKEEPER);
+
+	/* Set up NPCSx as GPIO outputs, initially high */
+	portmux_select_gpio(PORTMUX_PORT_B, (cs_mask & 7) << 2,
+			PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH);
+	portmux_select_gpio(PORTMUX_PORT_A, (cs_mask & 8) << (27 - 3),
+			PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH);
+}
+#endif
+
+#ifdef AT32AP700x_CHIP_HAS_LCDC
+void portmux_enable_lcdc(int pin_config)
+{
+	unsigned long portc_mask = 0;
+	unsigned long portd_mask = 0;
+	unsigned long porte_mask = 0;
+
+	switch (pin_config) {
+	case 0:
+		portc_mask = (1 << 19)	/* CC     */
+			| (1 << 20)	/* HSYNC  */
+			| (1 << 21)	/* PCLK   */
+			| (1 << 22)	/* VSYNC  */
+			| (1 << 23)	/* DVAL   */
+			| (1 << 24)	/* MODE   */
+			| (1 << 25)	/* PWR    */
+			| (1 << 26)	/* DATA0  */
+			| (1 << 27)	/* DATA1  */
+			| (1 << 28)	/* DATA2  */
+			| (1 << 29)	/* DATA3  */
+			| (1 << 30)	/* DATA4  */
+			| (1 << 31);	/* DATA5  */
+
+		portd_mask = (1 << 0)	/* DATA6  */
+			| (1 << 1)	/* DATA7  */
+			| (1 << 2)	/* DATA8  */
+			| (1 << 3)	/* DATA9  */
+			| (1 << 4)	/* DATA10 */
+			| (1 << 5)	/* DATA11 */
+			| (1 << 6)	/* DATA12 */
+			| (1 << 7)	/* DATA13 */
+			| (1 << 8)	/* DATA14 */
+			| (1 << 9)	/* DATA15 */
+			| (1 << 10)	/* DATA16 */
+			| (1 << 11)	/* DATA17 */
+			| (1 << 12)	/* DATA18 */
+			| (1 << 13)	/* DATA19 */
+			| (1 << 14)	/* DATA20 */
+			| (1 << 15)	/* DATA21 */
+			| (1 << 16)	/* DATA22 */
+			| (1 << 17);	/* DATA23 */
+		break;
+
+	case 1:
+		portc_mask = (1 << 20)	/* HSYNC  */
+			| (1 << 21)	/* PCLK   */
+			| (1 << 22)	/* VSYNC  */
+			| (1 << 25)	/* PWR    */
+			| (1 << 31);	/* DATA5  */
+
+		portd_mask = (1 << 0)	/* DATA6  */
+			| (1 << 1)	/* DATA7  */
+			| (1 << 7)	/* DATA13 */
+			| (1 << 8)	/* DATA14 */
+			| (1 << 9)	/* DATA15 */
+			| (1 << 16)	/* DATA22 */
+			| (1 << 17);	/* DATA23 */
+
+		porte_mask = (1 << 0)	/* CC     */
+			| (1 << 1)	/* DVAL   */
+			| (1 << 2)	/* MODE   */
+			| (1 << 3)	/* DATA0  */
+			| (1 << 4)	/* DATA1  */
+			| (1 << 5)	/* DATA2  */
+			| (1 << 6)	/* DATA3  */
+			| (1 << 7)	/* DATA4  */
+			| (1 << 8)	/* DATA8  */
+			| (1 << 9)	/* DATA9  */
+			| (1 << 10)	/* DATA10 */
+			| (1 << 11)	/* DATA11 */
+			| (1 << 12)	/* DATA12 */
+			| (1 << 13)	/* DATA16 */
+			| (1 << 14)	/* DATA17 */
+			| (1 << 15)	/* DATA18 */
+			| (1 << 16)	/* DATA19 */
+			| (1 << 17)	/* DATA20 */
+			| (1 << 18);	/* DATA21 */
+		break;
+	}
+
+	/* REVISIT: Some pins are probably pure outputs */
+	portmux_select_peripheral(PORTMUX_PORT_C, portc_mask,
+			PORTMUX_FUNC_A, PORTMUX_BUSKEEPER);
+	portmux_select_peripheral(PORTMUX_PORT_D, portd_mask,
+			PORTMUX_FUNC_A, PORTMUX_BUSKEEPER);
+	portmux_select_peripheral(PORTMUX_PORT_E, porte_mask,
+			PORTMUX_FUNC_B, PORTMUX_BUSKEEPER);
+}
+#endif

u-boot/arch/avr32/cpu/at32ap700x/sm.h

@@ -0,0 +1,204 @@
+/*
+ * Register definitions for System Manager
+ */
+#ifndef __CPU_AT32AP_SM_H__
+#define __CPU_AT32AP_SM_H__
+
+/* SM register offsets */
+#define SM_PM_MCCTRL				0x0000
+#define SM_PM_CKSEL				0x0004
+#define SM_PM_CPU_MASK				0x0008
+#define SM_PM_HSB_MASK				0x000c
+#define SM_PM_PBA_MASK				0x0010
+#define SM_PM_PBB_MASK				0x0014
+#define SM_PM_PLL0				0x0020
+#define SM_PM_PLL1				0x0024
+#define SM_PM_VCTRL				0x0030
+#define SM_PM_VMREF				0x0034
+#define SM_PM_VMV				0x0038
+#define SM_PM_IER				0x0040
+#define SM_PM_IDR				0x0044
+#define SM_PM_IMR				0x0048
+#define SM_PM_ISR				0x004c
+#define SM_PM_ICR				0x0050
+#define SM_PM_GCCTRL(x)				(0x0060 + 4 * x)
+#define SM_RTC_CTRL				0x0080
+#define SM_RTC_VAL				0x0084
+#define SM_RTC_TOP				0x0088
+#define SM_RTC_IER				0x0090
+#define SM_RTC_IDR				0x0094
+#define SM_RTC_IMR				0x0098
+#define SM_RTC_ISR				0x009c
+#define SM_RTC_ICR				0x00a0
+#define SM_WDT_CTRL				0x00b0
+#define SM_WDT_CLR				0x00b4
+#define SM_WDT_EXT				0x00b8
+#define SM_RC_RCAUSE				0x00c0
+#define SM_EIM_IER				0x0100
+#define SM_EIM_IDR				0x0104
+#define SM_EIM_IMR				0x0108
+#define SM_EIM_ISR				0x010c
+#define SM_EIM_ICR				0x0110
+#define SM_EIM_MODE				0x0114
+#define SM_EIM_EDGE				0x0118
+#define SM_EIM_LEVEL				0x011c
+#define SM_EIM_TEST				0x0120
+#define SM_EIM_NMIC				0x0124
+
+/* Bitfields in PM_CKSEL */
+#define SM_CPUSEL_OFFSET			0
+#define SM_CPUSEL_SIZE				3
+#define SM_CPUDIV_OFFSET			7
+#define SM_CPUDIV_SIZE				1
+#define SM_HSBSEL_OFFSET			8
+#define SM_HSBSEL_SIZE				3
+#define SM_HSBDIV_OFFSET			15
+#define SM_HSBDIV_SIZE				1
+#define SM_PBASEL_OFFSET			16
+#define SM_PBASEL_SIZE				3
+#define SM_PBADIV_OFFSET			23
+#define SM_PBADIV_SIZE				1
+#define SM_PBBSEL_OFFSET			24
+#define SM_PBBSEL_SIZE				3
+#define SM_PBBDIV_OFFSET			31
+#define SM_PBBDIV_SIZE				1
+
+/* Bitfields in PM_PLL0 */
+#define SM_PLLEN_OFFSET				0
+#define SM_PLLEN_SIZE				1
+#define SM_PLLOSC_OFFSET			1
+#define SM_PLLOSC_SIZE				1
+#define SM_PLLOPT_OFFSET			2
+#define SM_PLLOPT_SIZE				3
+#define SM_PLLDIV_OFFSET			8
+#define SM_PLLDIV_SIZE				8
+#define SM_PLLMUL_OFFSET			16
+#define SM_PLLMUL_SIZE				8
+#define SM_PLLCOUNT_OFFSET			24
+#define SM_PLLCOUNT_SIZE			6
+#define SM_PLLTEST_OFFSET			31
+#define SM_PLLTEST_SIZE				1
+
+/* Bitfields in PM_VCTRL */
+#define SM_VAUTO_OFFSET				0
+#define SM_VAUTO_SIZE				1
+#define SM_PM_VCTRL_VAL_OFFSET			8
+#define SM_PM_VCTRL_VAL_SIZE			7
+
+/* Bitfields in PM_VMREF */
+#define SM_REFSEL_OFFSET			0
+#define SM_REFSEL_SIZE				4
+
+/* Bitfields in PM_VMV */
+#define SM_PM_VMV_VAL_OFFSET			0
+#define SM_PM_VMV_VAL_SIZE			8
+
+/* Bitfields in PM_ICR */
+#define SM_LOCK0_OFFSET				0
+#define SM_LOCK0_SIZE				1
+#define SM_LOCK1_OFFSET				1
+#define SM_LOCK1_SIZE				1
+#define SM_WAKE_OFFSET				2
+#define SM_WAKE_SIZE				1
+#define SM_VOK_OFFSET				3
+#define SM_VOK_SIZE				1
+#define SM_VMRDY_OFFSET				4
+#define SM_VMRDY_SIZE				1
+#define SM_CKRDY_OFFSET				5
+#define SM_CKRDY_SIZE				1
+
+/* Bitfields in PM_GCCTRL */
+#define SM_OSCSEL_OFFSET			0
+#define SM_OSCSEL_SIZE				1
+#define SM_PLLSEL_OFFSET			1
+#define SM_PLLSEL_SIZE				1
+#define SM_CEN_OFFSET				2
+#define SM_CEN_SIZE				1
+#define SM_CPC_OFFSET				3
+#define SM_CPC_SIZE				1
+#define SM_DIVEN_OFFSET				4
+#define SM_DIVEN_SIZE				1
+#define SM_DIV_OFFSET				8
+#define SM_DIV_SIZE				8
+
+/* Bitfields in RTC_CTRL */
+#define SM_PCLR_OFFSET				1
+#define SM_PCLR_SIZE				1
+#define SM_TOPEN_OFFSET				2
+#define SM_TOPEN_SIZE				1
+#define SM_CLKEN_OFFSET				3
+#define SM_CLKEN_SIZE				1
+#define SM_PSEL_OFFSET				8
+#define SM_PSEL_SIZE				16
+
+/* Bitfields in RTC_VAL */
+#define SM_RTC_VAL_VAL_OFFSET			0
+#define SM_RTC_VAL_VAL_SIZE			31
+
+/* Bitfields in RTC_TOP */
+#define SM_RTC_TOP_VAL_OFFSET			0
+#define SM_RTC_TOP_VAL_SIZE			32
+
+/* Bitfields in RTC_ICR */
+#define SM_TOPI_OFFSET				0
+#define SM_TOPI_SIZE				1
+
+/* Bitfields in WDT_CTRL */
+#define SM_KEY_OFFSET				24
+#define SM_KEY_SIZE				8
+
+/* Bitfields in RC_RCAUSE */
+#define SM_POR_OFFSET				0
+#define SM_POR_SIZE				1
+#define SM_BOD_OFFSET				1
+#define SM_BOD_SIZE				1
+#define SM_EXT_OFFSET				2
+#define SM_EXT_SIZE				1
+#define SM_WDT_OFFSET				3
+#define SM_WDT_SIZE				1
+#define SM_NTAE_OFFSET				4
+#define SM_NTAE_SIZE				1
+#define SM_SERP_OFFSET				5
+#define SM_SERP_SIZE				1
+
+/* Bitfields in EIM_EDGE */
+#define SM_INT0_OFFSET				0
+#define SM_INT0_SIZE				1
+#define SM_INT1_OFFSET				1
+#define SM_INT1_SIZE				1
+#define SM_INT2_OFFSET				2
+#define SM_INT2_SIZE				1
+#define SM_INT3_OFFSET				3
+#define SM_INT3_SIZE				1
+
+/* Bitfields in EIM_LEVEL */
+
+/* Bitfields in EIM_TEST */
+#define SM_TESTEN_OFFSET			31
+#define SM_TESTEN_SIZE				1
+
+/* Bitfields in EIM_NMIC */
+#define SM_EN_OFFSET				0
+#define SM_EN_SIZE				1
+
+/* Bit manipulation macros */
+#define SM_BIT(name)					\
+	(1 << SM_##name##_OFFSET)
+#define SM_BF(name,value)				\
+	(((value) & ((1 << SM_##name##_SIZE) - 1))	\
+	 << SM_##name##_OFFSET)
+#define SM_BFEXT(name,value)				\
+	(((value) >> SM_##name##_OFFSET)		\
+	 & ((1 << SM_##name##_SIZE) - 1))
+#define SM_BFINS(name,value,old)			\
+	(((old) & ~(((1 << SM_##name##_SIZE) - 1)	\
+		    << SM_##name##_OFFSET))		\
+	 | SM_BF(name,value))
+
+/* Register access macros */
+#define sm_readl(reg)					\
+	readl((void *)ATMEL_BASE_SM + SM_##reg)
+#define sm_writel(reg,value)				\
+	writel((value), (void *)ATMEL_BASE_SM + SM_##reg)
+
+#endif /* __CPU_AT32AP_SM_H__ */

u-boot/arch/avr32/cpu/cache.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <asm/arch/cacheflush.h>
+
+void dcache_clean_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CONFIG_SYS_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		dcache_clean_line((void *)v);
+
+	sync_write_buffer();
+}
+
+void invalidate_dcache_range(unsigned long start, unsigned long stop)
+{
+	unsigned long v, linesz;
+
+	linesz = CONFIG_SYS_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	start = start & ~(linesz - 1);
+	stop = (stop + linesz - 1) & ~(linesz - 1);
+
+	for (v = start; v < stop; v += linesz)
+		dcache_invalidate_line((void *)v);
+}
+
+void flush_dcache_range(unsigned long start, unsigned long stop)
+{
+	unsigned long v, linesz;
+
+	linesz = CONFIG_SYS_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	start = start & ~(linesz - 1);
+	stop = (stop + linesz - 1) & ~(linesz - 1);
+
+	for (v = start; v < stop; v += linesz)
+		dcache_flush_line((void *)v);
+
+	sync_write_buffer();
+}
+
+void icache_invalidate_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CONFIG_SYS_ICACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		icache_invalidate_line((void *)v);
+}
+
+/*
+ * This is called after loading something into memory.  We need to
+ * make sure that everything that was loaded is actually written to
+ * RAM, and that the icache will look for it. Cleaning the dcache and
+ * invalidating the icache will do the trick.
+ */
+void  flush_cache (unsigned long start_addr, unsigned long size)
+{
+	dcache_clean_range((void *)start_addr, size);
+	icache_invalidate_range((void *)start_addr, size);
+}

u-boot/arch/avr32/cpu/config.mk

@@ -0,0 +1,6 @@
+#
+# Copyright (C) 2005-2006 Atmel Corporation
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+PLATFORM_RELFLAGS       += -mcpu=ap7000

u-boot/arch/avr32/cpu/cpu.c

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+
+#include <asm/io.h>
+#include <asm/sections.h>
+#include <asm/sysreg.h>
+
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+
+#include "hsmc3.h"
+
+/* Sanity checks */
+#if (CONFIG_SYS_CLKDIV_CPU > CONFIG_SYS_CLKDIV_HSB)		\
+	|| (CONFIG_SYS_CLKDIV_HSB > CONFIG_SYS_CLKDIV_PBA)	\
+	|| (CONFIG_SYS_CLKDIV_HSB > CONFIG_SYS_CLKDIV_PBB)
+# error Constraint fCPU >= fHSB >= fPB{A,B} violated
+#endif
+#if defined(CONFIG_PLL) && ((CONFIG_SYS_PLL0_MUL < 1) || (CONFIG_SYS_PLL0_DIV < 1))
+# error Invalid PLL multiplier and/or divider
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_cpu_init(void)
+{
+	extern void _evba(void);
+
+	gd->arch.cpu_hz = CONFIG_SYS_OSC0_HZ;
+
+	/* TODO: Move somewhere else, but needs to be run before we
+	 * increase the clock frequency. */
+	hsmc3_writel(MODE0, 0x00031103);
+	hsmc3_writel(CYCLE0, 0x000c000d);
+	hsmc3_writel(PULSE0, 0x0b0a0906);
+	hsmc3_writel(SETUP0, 0x00010002);
+
+	clk_init();
+
+	/* Update the CPU speed according to the PLL configuration */
+	gd->arch.cpu_hz = get_cpu_clk_rate();
+
+	/* Set up the exception handler table and enable exceptions */
+	sysreg_write(EVBA, (unsigned long)&_evba);
+	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET));
+
+	return 0;
+}
+
+void prepare_to_boot(void)
+{
+	/* Flush both caches and the write buffer */
+	asm volatile("cache  %0[4], 010\n\t"
+		     "cache  %0[0], 000\n\t"
+		     "sync   0" : : "r"(0) : "memory");
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	/* This will reset the CPU core, caches, MMU and all internal busses */
+	__builtin_mtdr(8, 1 << 13);	/* set DC:DBE */
+	__builtin_mtdr(8, 1 << 30);	/* set DC:RES */
+
+	/* Flush the pipeline before we declare it a failure */
+	asm volatile("sub   pc, pc, -4");
+
+	return -1;
+}

u-boot/arch/avr32/cpu/exception.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/sysreg.h>
+#include <asm/ptrace.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char * const cpu_modes[8] = {
+	"Application", "Supervisor", "Interrupt level 0", "Interrupt level 1",
+	"Interrupt level 2", "Interrupt level 3", "Exception", "NMI"
+};
+
+static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
+{
+	unsigned long p;
+	int i;
+
+	printf("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
+
+	for (p = bottom & ~31; p < top; ) {
+		printf("%04lx: ", p & 0xffff);
+
+		for (i = 0; i < 8; i++, p += 4) {
+			unsigned int val;
+
+			if (p < bottom || p >= top)
+				printf("         ");
+			else {
+				val = *(unsigned long *)p;
+				printf("%08x ", val);
+			}
+		}
+		printf("\n");
+	}
+}
+
+void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
+{
+	unsigned int mode;
+
+	printf("\n *** Unhandled exception %u at PC=0x%08lx [%08lx]\n",
+			ecr, regs->pc, regs->pc - gd->reloc_off);
+
+	switch (ecr) {
+	case ECR_BUS_ERROR_WRITE:
+	case ECR_BUS_ERROR_READ:
+		printf("Bus error at address 0x%08lx\n",
+		       sysreg_read(BEAR));
+		break;
+	case ECR_TLB_MULTIPLE:
+	case ECR_ADDR_ALIGN_X:
+	case ECR_PROTECTION_X:
+	case ECR_ADDR_ALIGN_R:
+	case ECR_ADDR_ALIGN_W:
+	case ECR_PROTECTION_R:
+	case ECR_PROTECTION_W:
+	case ECR_DTLB_MODIFIED:
+	case ECR_TLB_MISS_X:
+	case ECR_TLB_MISS_R:
+	case ECR_TLB_MISS_W:
+		printf("MMU exception at address 0x%08lx\n",
+		       sysreg_read(TLBEAR));
+		break;
+	}
+
+	printf("   pc: %08lx    lr: %08lx    sp: %08lx   r12: %08lx\n",
+	       regs->pc, regs->lr, regs->sp, regs->r12);
+	printf("  r11: %08lx   r10: %08lx    r9: %08lx    r8: %08lx\n",
+	       regs->r11, regs->r10, regs->r9, regs->r8);
+	printf("   r7: %08lx    r6: %08lx    r5: %08lx    r4: %08lx\n",
+	       regs->r7, regs->r6, regs->r5, regs->r4);
+	printf("   r3: %08lx    r2: %08lx    r1: %08lx    r0: %08lx\n",
+	       regs->r3, regs->r2, regs->r1, regs->r0);
+	printf("Flags: %c%c%c%c%c\n",
+	       regs->sr & SR_Q ? 'Q' : 'q',
+	       regs->sr & SR_V ? 'V' : 'v',
+	       regs->sr & SR_N ? 'N' : 'n',
+	       regs->sr & SR_Z ? 'Z' : 'z',
+	       regs->sr & SR_C ? 'C' : 'c');
+	printf("Mode bits: %c%c%c%c%c%c%c%c%c\n",
+	       regs->sr & SR_H ? 'H' : 'h',
+	       regs->sr & SR_R ? 'R' : 'r',
+	       regs->sr & SR_J ? 'J' : 'j',
+	       regs->sr & SR_EM ? 'E' : 'e',
+	       regs->sr & SR_I3M ? '3' : '.',
+	       regs->sr & SR_I2M ? '2' : '.',
+	       regs->sr & SR_I1M ? '1' : '.',
+	       regs->sr & SR_I0M ? '0' : '.',
+	       regs->sr & SR_GM ? 'G' : 'g');
+	mode = (regs->sr >> SYSREG_M0_OFFSET) & 7;
+	printf("CPU Mode: %s\n", cpu_modes[mode]);
+
+	/* Avoid exception loops */
+	if (regs->sp < (gd->start_addr_sp - CONFIG_STACKSIZE) ||
+	    regs->sp >= gd->start_addr_sp)
+		printf("\nStack pointer seems bogus, won't do stack dump\n");
+	else
+		dump_mem("\nStack: ", regs->sp, gd->start_addr_sp);
+
+	panic("Unhandled exception\n");
+}

u-boot/arch/avr32/cpu/hsdramc.c

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/io.h>
+#include <asm/sdram.h>
+
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+
+#include "hsdramc1.h"
+
+unsigned long sdram_init(void *sdram_base, const struct sdram_config *config)
+{
+	unsigned long sdram_size;
+	uint32_t cfgreg;
+	unsigned int i;
+
+	cfgreg = (HSDRAMC1_BF(NC, config->col_bits - 8)
+		       | HSDRAMC1_BF(NR, config->row_bits - 11)
+		       | HSDRAMC1_BF(NB, config->bank_bits - 1)
+		       | HSDRAMC1_BF(CAS, config->cas)
+		       | HSDRAMC1_BF(TWR, config->twr)
+		       | HSDRAMC1_BF(TRC, config->trc)
+		       | HSDRAMC1_BF(TRP, config->trp)
+		       | HSDRAMC1_BF(TRCD, config->trcd)
+		       | HSDRAMC1_BF(TRAS, config->tras)
+		       | HSDRAMC1_BF(TXSR, config->txsr));
+
+	if (config->data_bits == SDRAM_DATA_16BIT)
+		cfgreg |= HSDRAMC1_BIT(DBW);
+
+	hsdramc1_writel(CR, cfgreg);
+
+	/* Send a NOP to turn on the clock (necessary on some chips) */
+	hsdramc1_writel(MR, HSDRAMC1_MODE_NOP);
+	hsdramc1_readl(MR);
+	writel(0, sdram_base);
+
+	/*
+	 * Initialization sequence for SDRAM, from the data sheet:
+	 *
+	 * 1. A minimum pause of 200 us is provided to precede any
+	 *    signal toggle.
+	 */
+	udelay(200);
+
+	/*
+	 * 2. A Precharge All command is issued to the SDRAM
+	 */
+	hsdramc1_writel(MR, HSDRAMC1_MODE_BANKS_PRECHARGE);
+	hsdramc1_readl(MR);
+	writel(0, sdram_base);
+
+	/*
+	 * 3. Eight auto-refresh (CBR) cycles are provided
+	 */
+	hsdramc1_writel(MR, HSDRAMC1_MODE_AUTO_REFRESH);
+	hsdramc1_readl(MR);
+	for (i = 0; i < 8; i++)
+		writel(0, sdram_base);
+
+	/*
+	 * 4. A mode register set (MRS) cycle is issued to program
+	 *    SDRAM parameters, in particular CAS latency and burst
+	 *    length.
+	 *
+	 * The address will be chosen by the SDRAMC automatically; we
+	 * just have to make sure BA[1:0] are set to 0.
+	 */
+	hsdramc1_writel(MR, HSDRAMC1_MODE_LOAD_MODE);
+	hsdramc1_readl(MR);
+	writel(0, sdram_base);
+
+	/*
+	 * 5. The application must go into Normal Mode, setting Mode
+	 *    to 0 in the Mode Register and performing a write access
+	 *    at any location in the SDRAM.
+	 */
+	hsdramc1_writel(MR, HSDRAMC1_MODE_NORMAL);
+	hsdramc1_readl(MR);
+	writel(0, sdram_base);
+
+	/*
+	 * 6. Write refresh rate into SDRAMC refresh timer count
+	 *    register (refresh rate = timing between refresh cycles).
+	 */
+	hsdramc1_writel(TR, config->refresh_period);
+
+	if (config->data_bits == SDRAM_DATA_16BIT)
+		sdram_size = 1 << (config->row_bits + config->col_bits
+				   + config->bank_bits + 1);
+	else
+		sdram_size = 1 << (config->row_bits + config->col_bits
+				   + config->bank_bits + 2);
+
+	return sdram_size;
+}

u-boot/arch/avr32/cpu/hsdramc1.h

@@ -0,0 +1,143 @@
+/*
+ * Register definitions for SDRAM Controller
+ */
+#ifndef __ASM_AVR32_HSDRAMC1_H__
+#define __ASM_AVR32_HSDRAMC1_H__
+
+/* HSDRAMC1 register offsets */
+#define HSDRAMC1_MR				0x0000
+#define HSDRAMC1_TR				0x0004
+#define HSDRAMC1_CR				0x0008
+#define HSDRAMC1_HSR				0x000c
+#define HSDRAMC1_LPR				0x0010
+#define HSDRAMC1_IER				0x0014
+#define HSDRAMC1_IDR				0x0018
+#define HSDRAMC1_IMR				0x001c
+#define HSDRAMC1_ISR				0x0020
+#define HSDRAMC1_MDR				0x0024
+#define HSDRAMC1_VERSION			0x00fc
+
+/* Bitfields in MR */
+#define HSDRAMC1_MODE_OFFSET			0
+#define HSDRAMC1_MODE_SIZE			3
+
+/* Bitfields in TR */
+#define HSDRAMC1_COUNT_OFFSET			0
+#define HSDRAMC1_COUNT_SIZE			12
+
+/* Bitfields in CR */
+#define HSDRAMC1_NC_OFFSET			0
+#define HSDRAMC1_NC_SIZE			2
+#define HSDRAMC1_NR_OFFSET			2
+#define HSDRAMC1_NR_SIZE			2
+#define HSDRAMC1_NB_OFFSET			4
+#define HSDRAMC1_NB_SIZE			1
+#define HSDRAMC1_CAS_OFFSET			5
+#define HSDRAMC1_CAS_SIZE			2
+#define HSDRAMC1_DBW_OFFSET			7
+#define HSDRAMC1_DBW_SIZE			1
+#define HSDRAMC1_TWR_OFFSET			8
+#define HSDRAMC1_TWR_SIZE			4
+#define HSDRAMC1_TRC_OFFSET			12
+#define HSDRAMC1_TRC_SIZE			4
+#define HSDRAMC1_TRP_OFFSET			16
+#define HSDRAMC1_TRP_SIZE			4
+#define HSDRAMC1_TRCD_OFFSET			20
+#define HSDRAMC1_TRCD_SIZE			4
+#define HSDRAMC1_TRAS_OFFSET			24
+#define HSDRAMC1_TRAS_SIZE			4
+#define HSDRAMC1_TXSR_OFFSET			28
+#define HSDRAMC1_TXSR_SIZE			4
+
+/* Bitfields in HSR */
+#define HSDRAMC1_DA_OFFSET			0
+#define HSDRAMC1_DA_SIZE			1
+
+/* Bitfields in LPR */
+#define HSDRAMC1_LPCB_OFFSET			0
+#define HSDRAMC1_LPCB_SIZE			2
+#define HSDRAMC1_PASR_OFFSET			4
+#define HSDRAMC1_PASR_SIZE			3
+#define HSDRAMC1_TCSR_OFFSET			8
+#define HSDRAMC1_TCSR_SIZE			2
+#define HSDRAMC1_DS_OFFSET			10
+#define HSDRAMC1_DS_SIZE			2
+#define HSDRAMC1_TIMEOUT_OFFSET			12
+#define HSDRAMC1_TIMEOUT_SIZE			2
+
+/* Bitfields in IDR */
+#define HSDRAMC1_RES_OFFSET			0
+#define HSDRAMC1_RES_SIZE			1
+
+/* Bitfields in MDR */
+#define HSDRAMC1_MD_OFFSET			0
+#define HSDRAMC1_MD_SIZE			2
+
+/* Bitfields in VERSION */
+#define HSDRAMC1_VERSION_OFFSET			0
+#define HSDRAMC1_VERSION_SIZE			12
+#define HSDRAMC1_MFN_OFFSET			16
+#define HSDRAMC1_MFN_SIZE			3
+
+/* Constants for MODE */
+#define HSDRAMC1_MODE_NORMAL			0
+#define HSDRAMC1_MODE_NOP			1
+#define HSDRAMC1_MODE_BANKS_PRECHARGE		2
+#define HSDRAMC1_MODE_LOAD_MODE			3
+#define HSDRAMC1_MODE_AUTO_REFRESH		4
+#define HSDRAMC1_MODE_EXT_LOAD_MODE		5
+#define HSDRAMC1_MODE_POWER_DOWN		6
+
+/* Constants for NC */
+#define HSDRAMC1_NC_8_COLUMN_BITS		0
+#define HSDRAMC1_NC_9_COLUMN_BITS		1
+#define HSDRAMC1_NC_10_COLUMN_BITS		2
+#define HSDRAMC1_NC_11_COLUMN_BITS		3
+
+/* Constants for NR */
+#define HSDRAMC1_NR_11_ROW_BITS			0
+#define HSDRAMC1_NR_12_ROW_BITS			1
+#define HSDRAMC1_NR_13_ROW_BITS			2
+
+/* Constants for NB */
+#define HSDRAMC1_NB_TWO_BANKS			0
+#define HSDRAMC1_NB_FOUR_BANKS			1
+
+/* Constants for CAS */
+#define HSDRAMC1_CAS_ONE_CYCLE			1
+#define HSDRAMC1_CAS_TWO_CYCLES			2
+
+/* Constants for DBW */
+#define HSDRAMC1_DBW_32_BITS			0
+#define HSDRAMC1_DBW_16_BITS			1
+
+/* Constants for TIMEOUT */
+#define HSDRAMC1_TIMEOUT_AFTER_END		0
+#define HSDRAMC1_TIMEOUT_64_CYC_AFTER_END	1
+#define HSDRAMC1_TIMEOUT_128_CYC_AFTER_END	2
+
+/* Constants for MD */
+#define HSDRAMC1_MD_SDRAM			0
+#define HSDRAMC1_MD_LOW_POWER_SDRAM		1
+
+/* Bit manipulation macros */
+#define HSDRAMC1_BIT(name)					\
+	(1 << HSDRAMC1_##name##_OFFSET)
+#define HSDRAMC1_BF(name,value)					\
+	(((value) & ((1 << HSDRAMC1_##name##_SIZE) - 1))	\
+	 << HSDRAMC1_##name##_OFFSET)
+#define HSDRAMC1_BFEXT(name,value)				\
+	(((value) >> HSDRAMC1_##name##_OFFSET)			\
+	 & ((1 << HSDRAMC1_##name##_SIZE) - 1))
+#define HSDRAMC1_BFINS(name,value,old)				\
+	(((old) & ~(((1 << HSDRAMC1_##name##_SIZE) - 1)		\
+		    << HSDRAMC1_##name##_OFFSET))		\
+	 | HSDRAMC1_BF(name,value))
+
+/* Register access macros */
+#define hsdramc1_readl(reg)					\
+	readl((void *)ATMEL_BASE_HSDRAMC + HSDRAMC1_##reg)
+#define hsdramc1_writel(reg,value)				\
+	writel((value), (void *)ATMEL_BASE_HSDRAMC + HSDRAMC1_##reg)
+
+#endif /* __ASM_AVR32_HSDRAMC1_H__ */

u-boot/arch/avr32/cpu/hsmc3.h

@@ -0,0 +1,126 @@
+/*
+ * Register definitions for Static Memory Controller
+ */
+#ifndef __CPU_AT32AP_HSMC3_H__
+#define __CPU_AT32AP_HSMC3_H__
+
+/* HSMC3 register offsets */
+#define HSMC3_SETUP0				0x0000
+#define HSMC3_PULSE0				0x0004
+#define HSMC3_CYCLE0				0x0008
+#define HSMC3_MODE0				0x000c
+#define HSMC3_SETUP1				0x0010
+#define HSMC3_PULSE1				0x0014
+#define HSMC3_CYCLE1				0x0018
+#define HSMC3_MODE1				0x001c
+#define HSMC3_SETUP2				0x0020
+#define HSMC3_PULSE2				0x0024
+#define HSMC3_CYCLE2				0x0028
+#define HSMC3_MODE2				0x002c
+#define HSMC3_SETUP3				0x0030
+#define HSMC3_PULSE3				0x0034
+#define HSMC3_CYCLE3				0x0038
+#define HSMC3_MODE3				0x003c
+#define HSMC3_SETUP4				0x0040
+#define HSMC3_PULSE4				0x0044
+#define HSMC3_CYCLE4				0x0048
+#define HSMC3_MODE4				0x004c
+#define HSMC3_SETUP5				0x0050
+#define HSMC3_PULSE5				0x0054
+#define HSMC3_CYCLE5				0x0058
+#define HSMC3_MODE5				0x005c
+
+/* Bitfields in SETUP0 */
+#define HSMC3_NWE_SETUP_OFFSET			0
+#define HSMC3_NWE_SETUP_SIZE			6
+#define HSMC3_NCS_WR_SETUP_OFFSET		8
+#define HSMC3_NCS_WR_SETUP_SIZE			6
+#define HSMC3_NRD_SETUP_OFFSET			16
+#define HSMC3_NRD_SETUP_SIZE			6
+#define HSMC3_NCS_RD_SETUP_OFFSET		24
+#define HSMC3_NCS_RD_SETUP_SIZE			6
+
+/* Bitfields in PULSE0 */
+#define HSMC3_NWE_PULSE_OFFSET			0
+#define HSMC3_NWE_PULSE_SIZE			7
+#define HSMC3_NCS_WR_PULSE_OFFSET		8
+#define HSMC3_NCS_WR_PULSE_SIZE			7
+#define HSMC3_NRD_PULSE_OFFSET			16
+#define HSMC3_NRD_PULSE_SIZE			7
+#define HSMC3_NCS_RD_PULSE_OFFSET		24
+#define HSMC3_NCS_RD_PULSE_SIZE			7
+
+/* Bitfields in CYCLE0 */
+#define HSMC3_NWE_CYCLE_OFFSET			0
+#define HSMC3_NWE_CYCLE_SIZE			9
+#define HSMC3_NRD_CYCLE_OFFSET			16
+#define HSMC3_NRD_CYCLE_SIZE			9
+
+/* Bitfields in MODE0 */
+#define HSMC3_READ_MODE_OFFSET			0
+#define HSMC3_READ_MODE_SIZE			1
+#define HSMC3_WRITE_MODE_OFFSET			1
+#define HSMC3_WRITE_MODE_SIZE			1
+#define HSMC3_EXNW_MODE_OFFSET			4
+#define HSMC3_EXNW_MODE_SIZE			2
+#define HSMC3_BAT_OFFSET			8
+#define HSMC3_BAT_SIZE				1
+#define HSMC3_DBW_OFFSET			12
+#define HSMC3_DBW_SIZE				2
+#define HSMC3_TDF_CYCLES_OFFSET			16
+#define HSMC3_TDF_CYCLES_SIZE			4
+#define HSMC3_TDF_MODE_OFFSET			20
+#define HSMC3_TDF_MODE_SIZE			1
+#define HSMC3_PMEN_OFFSET			24
+#define HSMC3_PMEN_SIZE				1
+#define HSMC3_PS_OFFSET				28
+#define HSMC3_PS_SIZE				2
+
+/* Bitfields in MODE1 */
+#define HSMC3_PD_OFFSET				28
+#define HSMC3_PD_SIZE				2
+
+/* Constants for READ_MODE */
+#define HSMC3_READ_MODE_NCS_CONTROLLED		0
+#define HSMC3_READ_MODE_NRD_CONTROLLED		1
+
+/* Constants for WRITE_MODE */
+#define HSMC3_WRITE_MODE_NCS_CONTROLLED		0
+#define HSMC3_WRITE_MODE_NWE_CONTROLLED		1
+
+/* Constants for EXNW_MODE */
+#define HSMC3_EXNW_MODE_DISABLED		0
+#define HSMC3_EXNW_MODE_RESERVED		1
+#define HSMC3_EXNW_MODE_FROZEN			2
+#define HSMC3_EXNW_MODE_READY			3
+
+/* Constants for BAT */
+#define HSMC3_BAT_BYTE_SELECT			0
+#define HSMC3_BAT_BYTE_WRITE			1
+
+/* Constants for DBW */
+#define HSMC3_DBW_8_BITS			0
+#define HSMC3_DBW_16_BITS			1
+#define HSMC3_DBW_32_BITS			2
+
+/* Bit manipulation macros */
+#define HSMC3_BIT(name)						\
+	(1 << HSMC3_##name##_OFFSET)
+#define HSMC3_BF(name,value)					\
+	(((value) & ((1 << HSMC3_##name##_SIZE) - 1))		\
+	 << HSMC3_##name##_OFFSET)
+#define HSMC3_BFEXT(name,value)					\
+	(((value) >> HSMC3_##name##_OFFSET)			\
+	 & ((1 << HSMC3_##name##_SIZE) - 1))
+#define HSMC3_BFINS(name,value,old)\
+	(((old) & ~(((1 << HSMC3_##name##_SIZE) - 1)		\
+		    << HSMC3_##name##_OFFSET))			\
+	 | HSMC3_BF(name,value))
+
+/* Register access macros */
+#define hsmc3_readl(reg)					\
+	readl((void *)ATMEL_BASE_HSMC + HSMC3_##reg)
+#define hsmc3_writel(reg,value)					\
+	writel((value), (void *)ATMEL_BASE_HSMC + HSMC3_##reg)
+
+#endif /* __CPU_AT32AP_HSMC3_H__ */

u-boot/arch/avr32/cpu/interrupts.c

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <div64.h>
+
+#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/sysreg.h>
+
+#include <asm/arch/hardware.h>
+
+#define HANDLER_MASK	0x00ffffff
+#define INTLEV_SHIFT	30
+#define INTLEV_MASK	0x00000003
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Incremented whenever COUNT reaches 0xffffffff by timer_interrupt_handler */
+volatile unsigned long timer_overflow;
+
+/*
+ * Instead of dividing by get_tbclk(), multiply by this constant and
+ * right-shift the result by 32 bits.
+ */
+static unsigned long tb_factor;
+
+unsigned long get_tbclk(void)
+{
+	return gd->arch.cpu_hz;
+}
+
+unsigned long long get_ticks(void)
+{
+	unsigned long lo, hi_now, hi_prev;
+
+	do {
+		hi_prev = timer_overflow;
+		lo = sysreg_read(COUNT);
+		hi_now = timer_overflow;
+	} while (hi_prev != hi_now);
+
+	return ((unsigned long long)hi_now << 32) | lo;
+}
+
+unsigned long get_timer(unsigned long base)
+{
+	u64 now = get_ticks();
+
+	now *= tb_factor;
+	return (unsigned long)(now >> 32) - base;
+}
+
+/*
+ * For short delays only. It will overflow after a few seconds.
+ */
+void __udelay(unsigned long usec)
+{
+	unsigned long cycles;
+	unsigned long base;
+	unsigned long now;
+
+	base = sysreg_read(COUNT);
+	cycles = ((usec * (get_tbclk() / 10000)) + 50) / 100;
+
+	do {
+		now = sysreg_read(COUNT);
+	} while ((now - base) < cycles);
+}
+
+static int set_interrupt_handler(unsigned int nr, void (*handler)(void),
+				 unsigned int priority)
+{
+	extern void _evba(void);
+	unsigned long intpr;
+	unsigned long handler_addr = (unsigned long)handler;
+
+	handler_addr -= (unsigned long)&_evba;
+
+	if ((handler_addr & HANDLER_MASK) != handler_addr
+	    || (priority & INTLEV_MASK) != priority)
+		return -EINVAL;
+
+	intpr = (handler_addr & HANDLER_MASK);
+	intpr |= (priority & INTLEV_MASK) << INTLEV_SHIFT;
+	writel(intpr, (void *)ATMEL_BASE_INTC + 4 * nr);
+
+	return 0;
+}
+
+int timer_init(void)
+{
+	extern void timer_interrupt_handler(void);
+	u64 tmp;
+
+	sysreg_write(COUNT, 0);
+
+	tmp = (u64)CONFIG_SYS_HZ << 32;
+	tmp += gd->arch.cpu_hz / 2;
+	do_div(tmp, gd->arch.cpu_hz);
+	tb_factor = (u32)tmp;
+
+	if (set_interrupt_handler(0, &timer_interrupt_handler, 3))
+		return -EINVAL;
+
+	/* For all practical purposes, this gives us an overflow interrupt */
+	sysreg_write(COMPARE, 0xffffffff);
+	return 0;
+}

u-boot/arch/avr32/cpu/mmc.c

@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ * Copyright (C) 2015 Andreas Bießmann <andreas@biessmann.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <atmel_mci.h>
+#include <asm/arch/hardware.h>
+
+/* provide cpu_mmc_init, to overwrite provide board_mmc_init */
+int cpu_mmc_init(bd_t *bd)
+{
+	/* This calls the atmel_mci_init in gen_atmel_mci.c */
+	return atmel_mci_init((void *)ATMEL_BASE_MMCI);
+}

u-boot/arch/avr32/cpu/portmux-gpio.c

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+
+void portmux_select_peripheral(void *port, unsigned long pin_mask,
+		enum portmux_function func, unsigned long flags)
+{
+	/* Both pull-up and pull-down set means buskeeper */
+	if (flags & PORTMUX_PULL_DOWN)
+		gpio_writel(port, PDERS, pin_mask);
+	else
+		gpio_writel(port, PDERC, pin_mask);
+	if (flags & PORTMUX_PULL_UP)
+		gpio_writel(port, PUERS, pin_mask);
+	else
+		gpio_writel(port, PUERC, pin_mask);
+
+	/* Select drive strength */
+	if (flags & PORTMUX_DRIVE_LOW)
+		gpio_writel(port, ODCR0S, pin_mask);
+	else
+		gpio_writel(port, ODCR0C, pin_mask);
+	if (flags & PORTMUX_DRIVE_HIGH)
+		gpio_writel(port, ODCR1S, pin_mask);
+	else
+		gpio_writel(port, ODCR1C, pin_mask);
+
+	/* Select function */
+	if (func & PORTMUX_FUNC_B)
+		gpio_writel(port, PMR0S, pin_mask);
+	else
+		gpio_writel(port, PMR0C, pin_mask);
+	if (func & PORTMUX_FUNC_C)
+		gpio_writel(port, PMR1S, pin_mask);
+	else
+		gpio_writel(port, PMR1C, pin_mask);
+
+	/* Disable GPIO (i.e. enable peripheral) */
+	gpio_writel(port, GPERC, pin_mask);
+}
+
+void portmux_select_gpio(void *port, unsigned long pin_mask,
+		unsigned long flags)
+{
+	/* Both pull-up and pull-down set means buskeeper */
+	if (flags & PORTMUX_PULL_DOWN)
+		gpio_writel(port, PDERS, pin_mask);
+	else
+		gpio_writel(port, PDERC, pin_mask);
+	if (flags & PORTMUX_PULL_UP)
+		gpio_writel(port, PUERS, pin_mask);
+	else
+		gpio_writel(port, PUERC, pin_mask);
+
+	/* Enable open-drain mode if requested */
+	if (flags & PORTMUX_OPEN_DRAIN)
+		gpio_writel(port, ODMERS, pin_mask);
+	else
+		gpio_writel(port, ODMERC, pin_mask);
+
+	/* Select drive strength */
+	if (flags & PORTMUX_DRIVE_LOW)
+		gpio_writel(port, ODCR0S, pin_mask);
+	else
+		gpio_writel(port, ODCR0C, pin_mask);
+	if (flags & PORTMUX_DRIVE_HIGH)
+		gpio_writel(port, ODCR1S, pin_mask);
+	else
+		gpio_writel(port, ODCR1C, pin_mask);
+
+	/* Select direction and initial pin state */
+	if (flags & PORTMUX_DIR_OUTPUT) {
+		if (flags & PORTMUX_INIT_HIGH)
+			gpio_writel(port, OVRS, pin_mask);
+		else
+			gpio_writel(port, OVRC, pin_mask);
+		gpio_writel(port, ODERS, pin_mask);
+	} else {
+		gpio_writel(port, ODERC, pin_mask);
+	}
+
+	/* Enable GPIO */
+	gpio_writel(port, GPERS, pin_mask);
+}

u-boot/arch/avr32/cpu/portmux-pio.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2006, 2008 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/gpio.h>
+
+void portmux_select_peripheral(void *port, unsigned long pin_mask,
+		enum portmux_function func, unsigned long flags)
+{
+	if (flags & PORTMUX_PULL_UP)
+		pio_writel(port, PUER, pin_mask);
+	else
+		pio_writel(port, PUDR, pin_mask);
+
+	switch (func) {
+	case PORTMUX_FUNC_A:
+		pio_writel(port, ASR, pin_mask);
+		break;
+	case PORTMUX_FUNC_B:
+		pio_writel(port, BSR, pin_mask);
+		break;
+	}
+
+	pio_writel(port, PDR, pin_mask);
+}
+
+void portmux_select_gpio(void *port, unsigned long pin_mask,
+		unsigned long flags)
+{
+	if (flags & PORTMUX_PULL_UP)
+		pio_writel(port, PUER, pin_mask);
+	else
+		pio_writel(port, PUDR, pin_mask);
+
+	if (flags & PORTMUX_OPEN_DRAIN)
+		pio_writel(port, MDER, pin_mask);
+	else
+		pio_writel(port, MDDR, pin_mask);
+
+	if (flags & PORTMUX_DIR_OUTPUT) {
+		if (flags & PORTMUX_INIT_HIGH)
+			pio_writel(port, SODR, pin_mask);
+		else
+			pio_writel(port, CODR, pin_mask);
+		pio_writel(port, OER, pin_mask);
+	} else {
+		pio_writel(port, ODR, pin_mask);
+	}
+
+	pio_writel(port, PER, pin_mask);
+}
+
+void pio_set_output_value(unsigned int pin, int value)
+{
+	void *port = pio_pin_to_port(pin);
+
+	if (!port)
+		panic("Invalid GPIO pin %u\n", pin);
+
+	__pio_set_output_value(port, pin & 0x1f, value);
+}
+
+int pio_get_input_value(unsigned int pin)
+{
+	void *port = pio_pin_to_port(pin);
+
+	if (!port)
+		panic("Invalid GPIO pin %u\n", pin);
+
+	return __pio_get_input_value(port, pin & 0x1f);
+}

u-boot/arch/avr32/cpu/start.S

@@ -0,0 +1,268 @@
+/*
+ * Copyright (C) 2005-2008 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/ptrace.h>
+#include <asm/sysreg.h>
+
+#define SYSREG_MMUCR_I_OFFSET	2
+#define SYSREG_MMUCR_S_OFFSET	4
+
+#define SR_INIT (SYSREG_BIT(GM) | SYSREG_BIT(EM) | SYSREG_BIT(M0))
+/* due to errata (unreliable branch folding) clear FE bit explicitly */
+#define CPUCR_INIT ((SYSREG_BIT(BI) | SYSREG_BIT(BE)	\
+		    | SYSREG_BIT(RE)   |  SYSREG_BIT(IBE)		\
+		    | SYSREG_BIT(IEE)) & ~SYSREG_BIT(FE))
+
+	/*
+	 * To save some space, we use the same entry point for
+	 * exceptions and reset. This avoids lots of alignment padding
+	 * since the reset vector is always suitably aligned.
+	 */
+	.section .exception.text, "ax", @progbits
+	.global	_start
+	.global	_evba
+	.type	_start, @function
+	.type	_evba, @function
+_start:
+	.size	_start, 0
+_evba:
+	.org	0x00
+	rjmp	unknown_exception	/* Unrecoverable exception */
+	.org	0x04
+	rjmp	unknown_exception	/* TLB multiple hit */
+	.org	0x08
+	rjmp	unknown_exception	/* Bus error data fetch */
+	.org	0x0c
+	rjmp	unknown_exception	/* Bus error instruction fetch */
+	.org	0x10
+	rjmp	unknown_exception	/* NMI */
+	.org	0x14
+	rjmp	unknown_exception	/* Instruction address */
+	.org	0x18
+	rjmp	unknown_exception	/* ITLB protection */
+	.org	0x1c
+	rjmp	unknown_exception	/* Breakpoint */
+	.org	0x20
+	rjmp	unknown_exception	/* Illegal opcode */
+	.org	0x24
+	rjmp	unknown_exception	/* Unimplemented instruction */
+	.org	0x28
+	rjmp	unknown_exception	/* Privilege violation */
+	.org	0x2c
+	rjmp	unknown_exception	/* Floating-point */
+	.org	0x30
+	rjmp	unknown_exception	/* Coprocessor absent */
+	.org	0x34
+	rjmp	unknown_exception	/* Data Address (read) */
+	.org	0x38
+	rjmp	unknown_exception	/* Data Address (write) */
+	.org	0x3c
+	rjmp	unknown_exception	/* DTLB Protection (read) */
+	.org	0x40
+	rjmp	unknown_exception	/* DTLB Protection (write) */
+	.org	0x44
+	rjmp	unknown_exception	/* DTLB Modified */
+
+	.org	0x50			/* ITLB Miss */
+	pushm   r8-r12,lr
+	rjmp	1f
+	.org	0x60			/* DTLB Miss (read) */
+	pushm   r8-r12,lr
+	rjmp	1f
+	.org	0x70			/* DTLB Miss (write) */
+	pushm   r8-r12,lr
+1:	mov	r12, sp
+	rcall	mmu_handle_tlb_miss
+	popm	r8-r12,lr
+	brne	unknown_exception
+	rete
+
+	.size	_evba, . - _evba
+
+	.align	2
+	.type	unknown_exception, @function
+unknown_exception:
+	/* Figure out whether we're handling an exception (Exception
+	 * mode) or just booting (Supervisor mode). */
+	csrfcz	SYSREG_M1_OFFSET
+	brcc	at32ap_cpu_bootstrap
+
+	/* This is an exception. Complain. */
+	pushm	r0-r12
+	sub	r8, sp, REG_R12 - REG_R0 - 4
+	mov	r9, lr
+	mfsr	r10, SYSREG_RAR_EX
+	mfsr	r11, SYSREG_RSR_EX
+	pushm	r8-r11
+	mfsr	r12, SYSREG_ECR
+	mov	r11, sp
+	rcall	do_unknown_exception
+1:	rjmp	1b
+
+	/* The COUNT/COMPARE timer interrupt handler */
+	.global	timer_interrupt_handler
+	.type	timer_interrupt_handler,@function
+	.align	2
+timer_interrupt_handler:
+	/*
+	 * Increment timer_overflow and re-write COMPARE with 0xffffffff.
+	 *
+	 * We're running at interrupt level 3, so we don't need to save
+	 * r8-r12 or lr to the stack.
+	 */
+	lda.w	r8, timer_overflow
+	ld.w	r9, r8[0]
+	mov	r10, -1
+	mtsr	SYSREG_COMPARE, r10
+	sub	r9, -1
+	st.w	r8[0], r9
+	rete
+
+	/*
+	 * CPU bootstrap after reset is handled here. SoC code may
+	 * override this in case they need to initialize oscillators,
+	 * etc.
+	 */
+	.section .text.at32ap_cpu_bootstrap, "ax", @progbits
+	.global	at32ap_cpu_bootstrap
+	.weak	at32ap_cpu_bootstrap
+	.type	at32ap_cpu_bootstrap, @function
+	.align	2
+at32ap_cpu_bootstrap:
+	/* Reset the Status Register */
+	mov	r0, lo(SR_INIT)
+	orh	r0, hi(SR_INIT)
+	mtsr	SYSREG_SR, r0
+
+	/* Reset CPUCR and invalidate the BTB */
+	mov	r2, CPUCR_INIT
+	mtsr	SYSREG_CPUCR, r2
+
+	/* Flush the caches */
+	mov	r1, 0
+	cache	r1[4], 8
+	cache	r1[0], 0
+	sync	0
+
+	/* Reset the MMU to default settings */
+	mov	r0, SYSREG_BIT(MMUCR_S) | SYSREG_BIT(MMUCR_I)
+	mtsr	SYSREG_MMUCR, r0
+
+	/* Internal RAM should not need any initialization.  We might
+	   have to initialize external RAM here if the part doesn't
+	   have internal RAM (or we may use the data cache) */
+
+	/* Jump to cacheable segment */
+	lddpc	pc, 1f
+
+	.align	2
+1:	.long	at32ap_low_level_init
+	.size	_start, . - _start
+
+	/* Common CPU bootstrap code after oscillator/cache/etc. init */
+	.section .text.avr32ap_low_level_init, "ax", @progbits
+	.global	at32ap_low_level_init
+	.type	at32ap_low_level_init, @function
+	.align	2
+at32ap_low_level_init:
+	lddpc	sp, sp_init
+
+	/* Initialize the GOT pointer */
+	lddpc	r6, got_init
+3:	rsub	r6, pc
+
+	/* Let's go */
+	rjmp	board_init_f
+
+	.align	2
+	.type	sp_init,@object
+sp_init:
+	.long	CONFIG_SYS_INIT_SP_ADDR
+got_init:
+	.long	3b - _GLOBAL_OFFSET_TABLE_
+
+	/*
+	 * void	relocate_code(new_sp, new_gd, monitor_addr)
+	 *
+	 * Relocate the u-boot image into RAM and continue from there.
+	 * Does not return.
+	 */
+	.section .text.relocate_code,"ax",@progbits
+	.global	relocate_code
+	.type	relocate_code,@function
+relocate_code:
+	mov	sp, r12		/* use new stack */
+	mov	r12, r11	/* save new_gd */
+	mov	r11, r10	/* save destination address */
+
+	/* copy .text section and flush the cache along the way */
+	lda.w	r8, _text
+	lda.w	r9, _etext
+	sub	lr, r10, r8	/* relocation offset */
+
+1:	ldm	r8++, r0-r3
+	stm	r10, r0-r3
+	sub	r10, -16
+	ldm	r8++, r0-r3
+	stm	r10, r0-r3
+	sub	r10, -16
+	cp.w	r8, r9
+	cache	r10[-4], 0x0d	/* dcache clean/invalidate */
+	cache	r10[-4], 0x01	/* icache invalidate */
+	brlt	1b
+
+	/* flush write buffer */
+	sync	0
+
+	/* copy data sections */
+	lda.w	r9, _edata
+1:	ld.d	r0, r8++
+	st.d	r10++, r0
+	cp.w	r8, r9
+	brlt	1b
+
+	/* zero out .bss */
+	mov	r0, 0
+	mov	r1, 0
+	lda.w	r9, __bss_end
+	sub	r9, r8
+1:	st.d	r10++, r0
+	sub	r9, 8
+	brgt	1b
+
+	/* jump to RAM */
+	sub	r0, pc, . - in_ram
+	add	pc, r0, lr
+
+	.align	2
+in_ram:
+	/* find the new GOT and relocate it */
+	lddpc	r6, got_init_reloc
+3:	rsub	r6, pc
+	mov	r8, r6
+	lda.w	r9, _egot
+	lda.w	r10, _got
+	sub	r9, r10
+1:	ld.w	r0, r8[0]
+	add	r0, lr
+	st.w	r8++, r0
+	sub	r9, 4
+	brgt	1b
+
+	/* Move the exception handlers */
+	mfsr	r2, SYSREG_EVBA
+	add	r2, lr
+	mtsr	SYSREG_EVBA, r2
+
+	/* Do the rest of the initialization sequence */
+	call	board_init_r
+
+	.align	2
+got_init_reloc:
+	.long	3b - _GLOBAL_OFFSET_TABLE_
+
+	.size	relocate_code, . - relocate_code

u-boot/arch/avr32/cpu/u-boot.lds

@@ -0,0 +1,58 @@
+/* -*- Fundamental -*-
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
+OUTPUT_ARCH(avr32)
+ENTRY(_start)
+
+SECTIONS
+{
+	. = 0;
+	_text = .;
+	.text : {
+		*(.exception.text)
+		*(.text)
+		*(.text.*)
+	}
+	_etext = .;
+
+	.rodata : {
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+	}
+
+	. = ALIGN(8);
+	_data = .;
+	.data : {
+		*(.data)
+		*(.data.*)
+	}
+
+	. = ALIGN(4);
+
+	. = ALIGN(4);
+	.u_boot_list : {
+		KEEP(*(SORT(.u_boot_list*)));
+	}
+
+	. = ALIGN(4);
+	_got = .;
+	.got : {
+		*(.got)
+	}
+	_egot = .;
+
+	. = ALIGN(8);
+	_edata = .;
+
+	.bss (NOLOAD) : {
+		__bss_start = .;
+		*(.bss)
+		*(.bss.*)
+	}
+	. = ALIGN(8);
+	__bss_end = .;
+	__init_end = .;
+}