lib_avr32/board.c - platform/external/u-boot - Gitiles

 /*
  * Copyright (C) 2004-2006 Atmel Corporation
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
 #include <common.h>
 #include <command.h>
 #include <malloc.h>
 #include <stdio_dev.h>
 #include <timestamp.h>
 #include <version.h>
 #include <net.h>

 #include <asm/initcalls.h>
 #include <asm/sections.h>

 #ifndef CONFIG_IDENT_STRING
 #define CONFIG_IDENT_STRING ""
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 const char version_string[] =
 	U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;

 unsigned long monitor_flash_len;

 /*
  * Begin and end of memory area for malloc(), and current "brk"
  */
 static unsigned long mem_malloc_start = 0;
 static unsigned long mem_malloc_end = 0;
 static unsigned long mem_malloc_brk = 0;

 /* Weak aliases for optional board functions */
 static int __do_nothing(void)
 {
 	return 0;
 }
 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));

 /* The malloc area is right below the monitor image in RAM */
 static void mem_malloc_init(void)
 {
 	unsigned long monitor_addr;

 	monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
 	mem_malloc_end = monitor_addr;
 	mem_malloc_start = mem_malloc_end - CONFIG_SYS_MALLOC_LEN;
 	mem_malloc_brk = mem_malloc_start;

 	printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
 	       mem_malloc_start, mem_malloc_end);

 	memset ((void *)mem_malloc_start, 0,
 		mem_malloc_end - mem_malloc_start);
 }

 void *sbrk(ptrdiff_t increment)
 {
 	unsigned long old = mem_malloc_brk;
 	unsigned long new = old + increment;

 	if ((new < mem_malloc_start) || (new > mem_malloc_end))
 		return NULL;

 	mem_malloc_brk = new;
 	return ((void *)old);
 }

 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
 #include <asm/arch/cacheflush.h>
 #include <asm/io.h>

 static unsigned long dma_alloc_start;
 static unsigned long dma_alloc_end;
 static unsigned long dma_alloc_brk;

 static void dma_alloc_init(void)
 {
 	unsigned long monitor_addr;

 	monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
 	dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
 	dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
 	dma_alloc_brk = dma_alloc_start;

 	printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
 	       dma_alloc_start, dma_alloc_end);

 	dcache_invalidate_range(cached(dma_alloc_start),
 				dma_alloc_end - dma_alloc_start);
 }

 void *dma_alloc_coherent(size_t len, unsigned long *handle)
 {
 	unsigned long paddr = dma_alloc_brk;

 	if (dma_alloc_brk + len > dma_alloc_end)
 		return NULL;

 	dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
 			 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));

 	*handle = paddr;
 	return uncached(paddr);
 }
 #else
 static inline void dma_alloc_init(void)
 {

 }
 #endif

 static int init_baudrate(void)
 {
 	char tmp[64];
 	int i;

 	i = getenv_r("baudrate", tmp, sizeof(tmp));
 	if (i > 0) {
 		gd->baudrate = simple_strtoul(tmp, NULL, 10);
 	} else {
 		gd->baudrate = CONFIG_BAUDRATE;
 	}
 	return 0;
 }


 static int display_banner (void)
 {
 	printf ("\n\n%s\n\n", version_string);
 	printf ("U-Boot code: %p -> %p  data: %p -> %p\n",
 		_text, _etext, _data, _end);
 	return 0;
 }

 void hang(void)
 {
 	for (;;) ;
 }

 static int display_dram_config (void)
 {
 	int i;

 	puts ("DRAM Configuration:\n");

 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 		printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 		print_size (gd->bd->bi_dram[i].size, "\n");
 	}

 	return 0;
 }

 static void display_flash_config (void)
 {
 	puts ("Flash: ");
 	print_size(gd->bd->bi_flashsize, " ");
 	printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
 }

 void board_init_f(ulong board_type)
 {
 	gd_t gd_data;
 	gd_t *new_gd;
 	bd_t *bd;
 	unsigned long *new_sp;
 	unsigned long monitor_len;
 	unsigned long monitor_addr;
 	unsigned long addr;
 	long sdram_size;

 	/* Initialize the global data pointer */
 	memset(&gd_data, 0, sizeof(gd_data));
 	gd = &gd_data;

 	/* Perform initialization sequence */
 	board_early_init_f();
 	cpu_init();
 	board_postclk_init();
 	env_init();
 	init_baudrate();
 	serial_init();
 	console_init_f();
 	display_banner();
 	sdram_size = initdram(board_type);

 	/* If we have no SDRAM, we can't go on */
 	if (sdram_size <= 0)
 		panic("No working SDRAM available\n");

 	/*
 	 * Now that we have DRAM mapped and working, we can
 	 * relocate the code and continue running from DRAM.
 	 *
 	 * Reserve memory at end of RAM for (top down in that order):
 	 *  - u-boot image
 	 *  - heap for malloc()
 	 *  - board info struct
 	 *  - global data struct
 	 *  - stack
 	 */
 	addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
 	monitor_len = _end - _text;

 	/*
 	 * Reserve memory for u-boot code, data and bss.
 	 * Round down to next 4 kB limit.
 	 */
 	addr -= monitor_len;
 	addr &= ~(4096UL - 1);
 	monitor_addr = addr;

 	/* Reserve memory for malloc() */
 	addr -= CONFIG_SYS_MALLOC_LEN;

 #ifdef CONFIG_SYS_DMA_ALLOC_LEN
 	/* Reserve DMA memory (must be cache aligned) */
 	addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
 	addr -= CONFIG_SYS_DMA_ALLOC_LEN;
 #endif

 #ifdef CONFIG_LCD
 #ifdef CONFIG_FB_ADDR
 	printf("LCD: Frame buffer allocated at preset 0x%08x\n",
 	       CONFIG_FB_ADDR);
 	gd->fb_base = (void *)CONFIG_FB_ADDR;
 #else
 	addr = lcd_setmem(addr);
 	printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
 	gd->fb_base = (void *)addr;
 #endif /* CONFIG_FB_ADDR */
 #endif /* CONFIG_LCD */

 	/* Allocate a Board Info struct on a word boundary */
 	addr -= sizeof(bd_t);
 	addr &= ~3UL;
 	gd->bd = bd = (bd_t *)addr;

 	/* Allocate a new global data copy on a 8-byte boundary. */
 	addr -= sizeof(gd_t);
 	addr &= ~7UL;
 	new_gd = (gd_t *)addr;

 	/* And finally, a new, bigger stack. */
 	new_sp = (unsigned long *)addr;
 	gd->stack_end = addr;
 	*(--new_sp) = 0;
 	*(--new_sp) = 0;

 	/*
 	 * Initialize the board information struct with the
 	 * information we have.
 	 */
 	bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	bd->bi_dram[0].size = sdram_size;
 	bd->bi_baudrate = gd->baudrate;

 	memcpy(new_gd, gd, sizeof(gd_t));

 	relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
 }

 void board_init_r(gd_t *new_gd, ulong dest_addr)
 {
 	extern void malloc_bin_reloc (void);
 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
 #endif
 	char *s;
 	cmd_tbl_t *cmdtp;
 	bd_t *bd;

 	gd = new_gd;
 	bd = gd->bd;

 	gd->flags |= GD_FLG_RELOC;
 	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;

 	board_early_init_r();

 	monitor_flash_len = _edata - _text;

 	/*
 	 * We have to relocate the command table manually
 	 */
 	for (cmdtp = &__u_boot_cmd_start;
 	     cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 		unsigned long addr;

 		addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
 		cmdtp->cmd = (typeof(cmdtp->cmd))addr;

 		addr = (unsigned long)cmdtp->name + gd->reloc_off;
 		cmdtp->name = (typeof(cmdtp->name))addr;

 		if (cmdtp->usage) {
 			addr = (unsigned long)cmdtp->usage + gd->reloc_off;
 			cmdtp->usage = (typeof(cmdtp->usage))addr;
 		}
 #ifdef CONFIG_SYS_LONGHELP
 		if (cmdtp->help) {
 			addr = (unsigned long)cmdtp->help + gd->reloc_off;
 			cmdtp->help = (typeof(cmdtp->help))addr;
 		}
 #endif
 	}

 	/* there are some other pointer constants we must deal with */
 #ifndef CONFIG_ENV_IS_NOWHERE
 	env_name_spec += gd->reloc_off;
 #endif

 	timer_init();
 	mem_malloc_init();
 	malloc_bin_reloc();
 	dma_alloc_init();

 	enable_interrupts();

 	bd->bi_flashstart = 0;
 	bd->bi_flashsize = 0;
 	bd->bi_flashoffset = 0;

 #ifndef CONFIG_SYS_NO_FLASH
 	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 	bd->bi_flashsize = flash_init();
 	bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;

 	if (bd->bi_flashsize)
 		display_flash_config();
 #endif

 	if (bd->bi_dram[0].size)
 		display_dram_config();

 	gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
 	if (!gd->bd->bi_boot_params)
 		puts("WARNING: Cannot allocate space for boot parameters\n");

 	/* initialize environment */
 	env_relocate();

 	bd->bi_ip_addr = getenv_IPaddr ("ipaddr");

 	stdio_init();
 	jumptable_init();
 	console_init_r();

 	s = getenv("loadaddr");
 	if (s)
 		load_addr = simple_strtoul(s, NULL, 16);

 #if defined(CONFIG_CMD_NET)
 	s = getenv("bootfile");
 	if (s)
 		copy_filename(BootFile, s, sizeof(BootFile));
 #if defined(CONFIG_NET_MULTI)
 	puts("Net:   ");
 #endif
 	eth_initialize(gd->bd);
 #endif

 	for (;;) {
 		main_loop();
 	}
 }
	/*
	* Copyright (C) 2004-2006 Atmel Corporation
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/
	#include <common.h>
	#include <command.h>
	#include <malloc.h>
	#include <stdio_dev.h>
	#include <timestamp.h>
	#include <version.h>
	#include <net.h>

	#include <asm/initcalls.h>
	#include <asm/sections.h>

	#ifndef CONFIG_IDENT_STRING
	#define CONFIG_IDENT_STRING ""
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	const char version_string[] =
	U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME") " CONFIG_IDENT_STRING;

	unsigned long monitor_flash_len;

	/*
	* Begin and end of memory area for malloc(), and current "brk"
	*/
	static unsigned long mem_malloc_start = 0;
	static unsigned long mem_malloc_end = 0;
	static unsigned long mem_malloc_brk = 0;

	/* Weak aliases for optional board functions */
	static int __do_nothing(void)
	{
	return 0;
	}
	int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
	int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));

	/* The malloc area is right below the monitor image in RAM */
	static void mem_malloc_init(void)
	{
	unsigned long monitor_addr;

	monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
	mem_malloc_end = monitor_addr;
	mem_malloc_start = mem_malloc_end - CONFIG_SYS_MALLOC_LEN;
	mem_malloc_brk = mem_malloc_start;

	printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
	mem_malloc_start, mem_malloc_end);

	memset ((void *)mem_malloc_start, 0,
	mem_malloc_end - mem_malloc_start);
	}

	void *sbrk(ptrdiff_t increment)
	{
	unsigned long old = mem_malloc_brk;
	unsigned long new = old + increment;

	if ((new < mem_malloc_start) \|\| (new > mem_malloc_end))
	return NULL;

	mem_malloc_brk = new;
	return ((void *)old);
	}

	#ifdef CONFIG_SYS_DMA_ALLOC_LEN
	#include <asm/arch/cacheflush.h>
	#include <asm/io.h>

	static unsigned long dma_alloc_start;
	static unsigned long dma_alloc_end;
	static unsigned long dma_alloc_brk;

	static void dma_alloc_init(void)
	{
	unsigned long monitor_addr;

	monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
	dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
	dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
	dma_alloc_brk = dma_alloc_start;

	printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
	dma_alloc_start, dma_alloc_end);

	dcache_invalidate_range(cached(dma_alloc_start),
	dma_alloc_end - dma_alloc_start);
	}

	void dma_alloc_coherent(size_t len, unsigned long handle)
	{
	unsigned long paddr = dma_alloc_brk;

	if (dma_alloc_brk + len > dma_alloc_end)
	return NULL;

	dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
	& ~(CONFIG_SYS_DCACHE_LINESZ - 1));

	*handle = paddr;
	return uncached(paddr);
	}
	#else
	static inline void dma_alloc_init(void)
	{

	}
	#endif

	static int init_baudrate(void)
	{
	char tmp[64];
	int i;

	i = getenv_r("baudrate", tmp, sizeof(tmp));
	if (i > 0) {
	gd->baudrate = simple_strtoul(tmp, NULL, 10);
	} else {
	gd->baudrate = CONFIG_BAUDRATE;
	}
	return 0;
	}


	static int display_banner (void)
	{
	printf ("\n\n%s\n\n", version_string);
	printf ("U-Boot code: %p -> %p data: %p -> %p\n",
	_text, _etext, _data, _end);
	return 0;
	}

	void hang(void)
	{
	for (;;) ;
	}

	static int display_dram_config (void)
	{
	int i;

	puts ("DRAM Configuration:\n");

	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
	printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
	print_size (gd->bd->bi_dram[i].size, "\n");
	}

	return 0;
	}

	static void display_flash_config (void)
	{
	puts ("Flash: ");
	print_size(gd->bd->bi_flashsize, " ");
	printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
	}

	void board_init_f(ulong board_type)
	{
	gd_t gd_data;
	gd_t *new_gd;
	bd_t *bd;
	unsigned long *new_sp;
	unsigned long monitor_len;
	unsigned long monitor_addr;
	unsigned long addr;
	long sdram_size;

	/* Initialize the global data pointer */
	memset(&gd_data, 0, sizeof(gd_data));
	gd = &gd_data;

	/* Perform initialization sequence */
	board_early_init_f();
	cpu_init();
	board_postclk_init();
	env_init();
	init_baudrate();
	serial_init();
	console_init_f();
	display_banner();
	sdram_size = initdram(board_type);

	/* If we have no SDRAM, we can't go on */
	if (sdram_size <= 0)
	panic("No working SDRAM available\n");

	/*
	* Now that we have DRAM mapped and working, we can
	* relocate the code and continue running from DRAM.
	*
	* Reserve memory at end of RAM for (top down in that order):
	* - u-boot image
	* - heap for malloc()
	* - board info struct
	* - global data struct
	* - stack
	*/
	addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
	monitor_len = _end - _text;

	/*
	* Reserve memory for u-boot code, data and bss.
	* Round down to next 4 kB limit.
	*/
	addr -= monitor_len;
	addr &= ~(4096UL - 1);
	monitor_addr = addr;

	/* Reserve memory for malloc() */
	addr -= CONFIG_SYS_MALLOC_LEN;

	#ifdef CONFIG_SYS_DMA_ALLOC_LEN
	/* Reserve DMA memory (must be cache aligned) */
	addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
	addr -= CONFIG_SYS_DMA_ALLOC_LEN;
	#endif

	#ifdef CONFIG_LCD
	#ifdef CONFIG_FB_ADDR
	printf("LCD: Frame buffer allocated at preset 0x%08x\n",
	CONFIG_FB_ADDR);
	gd->fb_base = (void *)CONFIG_FB_ADDR;
	#else
	addr = lcd_setmem(addr);
	printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
	gd->fb_base = (void *)addr;
	#endif /* CONFIG_FB_ADDR */
	#endif /* CONFIG_LCD */

	/* Allocate a Board Info struct on a word boundary */
	addr -= sizeof(bd_t);
	addr &= ~3UL;
	gd->bd = bd = (bd_t *)addr;

	/* Allocate a new global data copy on a 8-byte boundary. */
	addr -= sizeof(gd_t);
	addr &= ~7UL;
	new_gd = (gd_t *)addr;

	/* And finally, a new, bigger stack. */
	new_sp = (unsigned long *)addr;
	gd->stack_end = addr;
	*(--new_sp) = 0;
	*(--new_sp) = 0;

	/*
	* Initialize the board information struct with the
	* information we have.
	*/
	bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
	bd->bi_dram[0].size = sdram_size;
	bd->bi_baudrate = gd->baudrate;

	memcpy(new_gd, gd, sizeof(gd_t));

	relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
	}

	void board_init_r(gd_t *new_gd, ulong dest_addr)
	{
	extern void malloc_bin_reloc (void);
	#ifndef CONFIG_ENV_IS_NOWHERE
	extern char * env_name_spec;
	#endif
	char *s;
	cmd_tbl_t *cmdtp;
	bd_t *bd;

	gd = new_gd;
	bd = gd->bd;

	gd->flags \|= GD_FLG_RELOC;
	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;

	board_early_init_r();

	monitor_flash_len = _edata - _text;

	/*
	* We have to relocate the command table manually
	*/
	for (cmdtp = &__u_boot_cmd_start;
	cmdtp != &__u_boot_cmd_end; cmdtp++) {
	unsigned long addr;

	addr = (unsigned long)cmdtp->cmd + gd->reloc_off;
	cmdtp->cmd = (typeof(cmdtp->cmd))addr;

	addr = (unsigned long)cmdtp->name + gd->reloc_off;
	cmdtp->name = (typeof(cmdtp->name))addr;

	if (cmdtp->usage) {
	addr = (unsigned long)cmdtp->usage + gd->reloc_off;
	cmdtp->usage = (typeof(cmdtp->usage))addr;
	}
	#ifdef CONFIG_SYS_LONGHELP
	if (cmdtp->help) {
	addr = (unsigned long)cmdtp->help + gd->reloc_off;
	cmdtp->help = (typeof(cmdtp->help))addr;
	}
	#endif
	}

	/* there are some other pointer constants we must deal with */
	#ifndef CONFIG_ENV_IS_NOWHERE
	env_name_spec += gd->reloc_off;
	#endif

	timer_init();
	mem_malloc_init();
	malloc_bin_reloc();
	dma_alloc_init();

	enable_interrupts();

	bd->bi_flashstart = 0;
	bd->bi_flashsize = 0;
	bd->bi_flashoffset = 0;

	#ifndef CONFIG_SYS_NO_FLASH
	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
	bd->bi_flashsize = flash_init();
	bd->bi_flashoffset = (unsigned long)_edata - (unsigned long)_text;

	if (bd->bi_flashsize)
	display_flash_config();
	#endif

	if (bd->bi_dram[0].size)
	display_dram_config();

	gd->bd->bi_boot_params = malloc(CONFIG_SYS_BOOTPARAMS_LEN);
	if (!gd->bd->bi_boot_params)
	puts("WARNING: Cannot allocate space for boot parameters\n");

	/* initialize environment */
	env_relocate();

	bd->bi_ip_addr = getenv_IPaddr ("ipaddr");

	stdio_init();
	jumptable_init();
	console_init_r();

	s = getenv("loadaddr");
	if (s)
	load_addr = simple_strtoul(s, NULL, 16);

	#if defined(CONFIG_CMD_NET)
	s = getenv("bootfile");
	if (s)
	copy_filename(BootFile, s, sizeof(BootFile));
	#if defined(CONFIG_NET_MULTI)
	puts("Net: ");
	#endif
	eth_initialize(gd->bd);
	#endif

	for (;;) {
	main_loop();
	}
	}