OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
ENTRY(_start)
SECTIONS
{
 . = 0x00000000;
 . = ALIGN(8);
 .text :
 {
  *(.__image_copy_start)
  arch/arm/cpu/armv8/start.o (.text*)
  *(.text*)
 }
 . = ALIGN(8);
 .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 . = ALIGN(8);
 .data : {
  *(.data*)
 }
 . = ALIGN(8);
 . = .;
 . = ALIGN(8);
 .u_boot_list : {
  KEEP(*(SORT(.u_boot_list*)));
 }
 . = ALIGN(8);
 .image_copy_end :
 {
  *(.__image_copy_end)
 }
 . = ALIGN(8);
 .rel_dyn_start :
 {
  *(.__rel_dyn_start)
 }
 .rela.dyn : {
  *(.rela*)
 }
 .rel_dyn_end :
 {
  *(.__rel_dyn_end)
 }
 _end = .;
 . = ALIGN(8);
 .bss_start : {
  KEEP(*(.__bss_start));
 }
 .bss : {
  *(.bss*)
   . = ALIGN(8);
 }
 .bss_end : {
  KEEP(*(.__bss_end));
 }
 /DISCARD/ : { *(.dynsym) }
 /DISCARD/ : { *(.dynstr*) }
 /DISCARD/ : { *(.dynamic*) }
 /DISCARD/ : { *(.plt*) }
 /DISCARD/ : { *(.interp*) }
 /DISCARD/ : { *(.gnu*) }
}

/* arch\arm\cpu\armv8\start.S */
#include <asm-offsets.h>
#include <config.h>
#include <linux/linkage.h>
#include <asm/macro.h>
#include <asm/armv8/mmu.h>

/* arch\arm\cpu\armv8\start.S */
.globl	_start
_start:
	b	reset

/* arch\arm\cpu\armv8\start.S */
reset:
	/*
	 * Could be EL3/EL2/EL1, Initial State:
	 * Little Endian, MMU Disabled, i/dCache Disabled
	 */
	adr	x0, vectors
	switch_el x1, 3f, 2f, 1f
3:	msr	vbar_el3, x0
	mrs	x0, scr_el3
	orr	x0, x0, #0xf			/* SCR_EL3.NS|IRQ|FIQ|EA */
	msr	scr_el3, x0
	msr	cptr_el3, xzr			/* Enable FP/SIMD */
	ldr	x0, =COUNTER_FREQUENCY
	msr	cntfrq_el0, x0			/* Initialize CNTFRQ */
	b	0f
2:	msr	vbar_el2, x0
	mov	x0, #0x33ff
	msr	cptr_el2, x0			/* Enable FP/SIMD */
	b	0f
1:	msr	vbar_el1, x0
	mov	x0, #3 << 20
	msr	cpacr_el1, x0			/* Enable FP/SIMD */
0:

	/* Apply ARM core specific erratas */
	bl	apply_core_errata

	/*
	 * Cache/BPB/TLB Invalidate
	 * i-cache is invalidated before enabled in icache_enable()
	 * tlb is invalidated before mmu is enabled in dcache_enable()
	 * d-cache is invalidated before enabled in dcache_enable()
	 */

	/* Processor specific initialization */
	bl	lowlevel_init

#ifdef CONFIG_ARMV8_MULTIENTRY
	branch_if_master x0, x1, master_cpu

	/*
	 * Slave CPUs
	 */
slave_cpu:
	wfe
	ldr	x1, =CPU_RELEASE_ADDR
	ldr	x0, [x1]
	cbz	x0, slave_cpu
	br	x0			/* branch to the given address */
master_cpu:
	/* On the master CPU */
#endif /* CONFIG_ARMV8_MULTIENTRY */

	bl	_main

/*arch\arm\lib\crt0_64.S*/
.global gd_chip_id
ENTRY(_main)

/*
 * Set up initial C runtime environment and call board_init_f(0).
 */
	ldr	x0, =(CONFIG_SYS_INIT_SP_ADDR)
	sub	x18, x0, #GD_SIZE	/* allocate one GD above SP */
	bic	x18, x18, #0x7		/* 8-byte alignment for GD */
zero_gd:
	sub	x0, x0, #0x8
	str	xzr, [x0]
	cmp	x0, x18
	b.gt	zero_gd
#if defined(CONFIG_SYS_MALLOC_F_LEN)
	sub	x0, x18, #CONFIG_SYS_MALLOC_F_LEN
	str	x0, [x18, #GD_MALLOC_BASE]
#endif
#if defined(CONFIG_TOP_RAM_CALLOC)
	sub	x0, x18, #CONFIG_TOP_RAM_CALLOC_LEN
	str	x0, [x18, #GD_TOP_RAM_BASE]
#endif
	bic	sp, x0, #0xf	/* 16-byte alignment for ABI compliance */

	mov     x0, x5
	mov     x1, x6
	mov     x2, x7
	bl      gd_chip_id
	mov	x0, #0
#if !defined(CONFIG_COMIP_TARGETLOADER)
	bl	board_init_f
#endif

#if !defined(CONFIG_COMIP_TARGETLOADER)
	ldr	x0, [x18, #GD_START_ADDR_SP]	/* x0 <- gd->start_addr_sp */
	bic	sp, x0, #0xf	/* 16-byte alignment for ABI compliance */
	ldr	x18, [x18, #GD_BD]		/* x18 <- gd->bd */
	sub	x18, x18, #GD_SIZE		/* new GD is below bd */
	adr	lr, relocation_return
	ldr	x9, [x18, #GD_RELOC_OFF]	/* x9 <- gd->reloc_off */
	add	lr, lr, x9	/* new return address after relocation */
	ldr	x0, [x18, #GD_RELOCADDR]	/* x0 <- gd->relocaddr */
	b	relocate_code
#endif
relocation_return:

/*
 * Set up final (full) environment
 */
	bl	c_runtime_cpu_setup		/* still call old routine */

/*
 * Clear BSS section
 */
	ldr	x0, =__bss_start		/* this is auto-relocated! */
	ldr	x1, =__bss_end			/* this is auto-relocated! */
	mov	x2, #0
clear_loop:
	str	x2, [x0]
	add	x0, x0, #8
	cmp	x0, x1
	b.lo	clear_loop

#if defined(CONFIG_COMIP_TARGETLOADER)
	bic	sp, x0, #0xf	/* 16-byte alignment for ABI compliance */
	mov	x0, #0
	b	board_init_tl
#else
	/* call board_init_r(gd_t *id, ulong dest_addr) */
	mov	x0, x18				/* gd_t */
	ldr	x1, [x18, #GD_RELOCADDR]	/* dest_addr */
	b	board_init_r			/* PC relative jump */

static int run_main_loop(void)
{
#if defined(CONFIG_LCD)
	drv_lcd_init();
#endif
#if defined(CONFIG_COMIP_FASTBOOT) || defined(CONFIG_USB_LC1881_MISC)
	if (gd->arch.fastboot) {
		/* FIX ME, framebuffer is overlapped with uboot,
		 * it's safe for now, for framebuffer occupies 12M of dram from the top,
		 * but only use the lowest 4M.
		 */

		extern int fastboot_init(void);
		fastboot_init();
		while(1);
	}
#endif

#if defined(CONFIG_COMIP)
	do_boot_linux();
#endif
#ifdef CONFIG_SANDBOX
	sandbox_main_loop_init();
#endif
	/* main_loop() can return to retry autoboot, if so just run it again */
	for (;;)
		main_loop();
	return 0;
}

/* We come here after U-Boot is initialised and ready to process commands */
void main_loop(void)
{
	const char *s;

	bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop");

#ifndef CONFIG_SYS_GENERIC_BOARD
	puts("Warning: Your board does not use generic board. Please read\n");
	puts("doc/README.generic-board and take action. Boards not\n");
	puts("upgraded by the late 2014 may break or be removed.\n");
#endif

	modem_init();
#ifdef CONFIG_VERSION_VARIABLE
	setenv("ver", version_string);  /* set version variable */
#endif /* CONFIG_VERSION_VARIABLE */

	cli_init();

	run_preboot_environment_command();

#if defined(CONFIG_UPDATE_TFTP)
	update_tftp(0UL);
#endif /* CONFIG_UPDATE_TFTP */

	s = bootdelay_process();
	if (cli_process_fdt(&s))
		cli_secure_boot_cmd(s);

	autoboot_command(s);

	cli_loop();
}

const char *bootdelay_process(void)
{
	char *s;
	int bootdelay;
#ifdef CONFIG_BOOTCOUNT_LIMIT
	unsigned long bootcount = 0;
	unsigned long bootlimit = 0;
#endif /* CONFIG_BOOTCOUNT_LIMIT */

#ifdef CONFIG_BOOTCOUNT_LIMIT
	bootcount = bootcount_load();
	bootcount++;
	bootcount_store(bootcount);
	setenv_ulong("bootcount", bootcount);
	bootlimit = getenv_ulong("bootlimit", 10, 0);
#endif /* CONFIG_BOOTCOUNT_LIMIT */

	s = getenv("bootdelay");
	bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;

#ifdef CONFIG_OF_CONTROL
	bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
			bootdelay);
#endif

	debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);

#if defined(CONFIG_MENU_SHOW)
	bootdelay = menu_show(bootdelay);
#endif
	bootretry_init_cmd_timeout();

#ifdef CONFIG_POST
	if (gd->flags & GD_FLG_POSTFAIL) {
		s = getenv("failbootcmd");
	} else
#endif /* CONFIG_POST */
#ifdef CONFIG_BOOTCOUNT_LIMIT
	if (bootlimit && (bootcount > bootlimit)) {
		printf("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
		       (unsigned)bootlimit);
		s = getenv("altbootcmd");
	} else
#endif /* CONFIG_BOOTCOUNT_LIMIT */
		s = getenv("bootcmd");

	process_fdt_options(gd->fdt_blob);
	stored_bootdelay = bootdelay;

	return s;
}

void autoboot_command(const char *s)
{
	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");

	if (stored_bootdelay != -1 && s && !abortboot(stored_bootdelay)) {
#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
		int prev = disable_ctrlc(1);	/* disable Control C checking */
#endif

		run_command_list(s, -1, 0);

#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
		disable_ctrlc(prev);	/* restore Control C checking */
#endif
	}

#ifdef CONFIG_MENUKEY
	if (menukey == CONFIG_MENUKEY) {
		s = getenv("menucmd");
		if (s)
			run_command_list(s, -1, 0);
	}
#endif /* CONFIG_MENUKEY */
}

#ifdef	CONFIG_BOOTCOMMAND
	"bootcmd="	CONFIG_BOOTCOMMAND		"\0"
#endif