arch/mips/lib/board.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2003
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * 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 <version.h>
 #include <net.h>
 #include <environment.h>
 #include <nand.h>
 #include <onenand_uboot.h>
 #include <spi.h>

 #ifdef CONFIG_BITBANGMII
 #include <miiphy.h>
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 ulong monitor_flash_len;

 static char *failed = "*** failed ***\n";

 /*
  * mips_io_port_base is the begin of the address space to which x86 style
  * I/O ports are mapped.
  */
 unsigned long mips_io_port_base = -1;

 int __board_early_init_f(void)
 {
 	/*
 	 * Nothing to do in this dummy implementation
 	 */
 	return 0;
 }
 int board_early_init_f(void)
 	__attribute__((weak, alias("__board_early_init_f")));

 static int init_func_ram(void)
 {
 #ifdef	CONFIG_BOARD_TYPES
 	int board_type = gd->board_type;
 #else
 	int board_type = 0;	/* use dummy arg */
 #endif
 	puts("DRAM:  ");

 	gd->ram_size = initdram(board_type);
 	if (gd->ram_size > 0) {
 		print_size(gd->ram_size, "\n");
 		return 0;
 	}
 	puts(failed);
 	return 1;
 }

 static int display_banner(void)
 {

 	printf("\n\n%s\n\n", version_string);
 	return 0;
 }

 #ifndef CONFIG_SYS_NO_FLASH
 static void display_flash_config(ulong size)
 {
 	puts("Flash: ");
 	print_size(size, "\n");
 }
 #endif

 static int init_baudrate(void)
 {
 	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 	return 0;
 }


 /*
  * Breath some life into the board...
  *
  * The first part of initialization is running from Flash memory;
  * its main purpose is to initialize the RAM so that we
  * can relocate the monitor code to RAM.
  */

 /*
  * All attempts to come up with a "common" initialization sequence
  * that works for all boards and architectures failed: some of the
  * requirements are just _too_ different. To get rid of the resulting
  * mess of board dependend #ifdef'ed code we now make the whole
  * initialization sequence configurable to the user.
  *
  * The requirements for any new initalization function is simple: it
  * receives a pointer to the "global data" structure as it's only
  * argument, and returns an integer return code, where 0 means
  * "continue" and != 0 means "fatal error, hang the system".
  */
 typedef int (init_fnc_t)(void);

 init_fnc_t *init_sequence[] = {
 	board_early_init_f,
 	timer_init,
 	env_init,		/* initialize environment */
 #ifdef CONFIG_INCA_IP
 	incaip_set_cpuclk,	/* set cpu clock according to env. variable */
 #endif
 	init_baudrate,		/* initialize baudrate settings */
 	serial_init,		/* serial communications setup */
 	console_init_f,
 	display_banner,		/* say that we are here */
 	checkboard,
 	init_func_ram,
 	NULL,
 };


 void board_init_f(ulong bootflag)
 {
 	gd_t gd_data, *id;
 	bd_t *bd;
 	init_fnc_t **init_fnc_ptr;
 	ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
 	ulong *s;

 	/* Pointer is writable since we allocated a register for it.
 	 */
 	gd = &gd_data;
 	/* compiler optimization barrier needed for GCC >= 3.4 */
 	__asm__ __volatile__("" : : : "memory");

 	memset((void *)gd, 0, sizeof(gd_t));

 	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 		if ((*init_fnc_ptr)() != 0)
 			hang();
 	}

 	/*
 	 * Now that we have DRAM mapped and working, we can
 	 * relocate the code and continue running from DRAM.
 	 */
 	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;

 	/* We can reserve some RAM "on top" here.
 	 */

 	/* round down to next 4 kB limit.
 	 */
 	addr &= ~(4096 - 1);
 	debug("Top of RAM usable for U-Boot at: %08lx\n", addr);

 	/* Reserve memory for U-Boot code, data & bss
 	 * round down to next 16 kB limit
 	 */
 	addr -= len;
 	addr &= ~(16 * 1024 - 1);

 	debug("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);

 	 /* Reserve memory for malloc() arena.
 	 */
 	addr_sp = addr - TOTAL_MALLOC_LEN;
 	debug("Reserving %dk for malloc() at: %08lx\n",
 			TOTAL_MALLOC_LEN >> 10, addr_sp);

 	/*
 	 * (permanently) allocate a Board Info struct
 	 * and a permanent copy of the "global" data
 	 */
 	addr_sp -= sizeof(bd_t);
 	bd = (bd_t *)addr_sp;
 	gd->bd = bd;
 	debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 			sizeof(bd_t), addr_sp);

 	addr_sp -= sizeof(gd_t);
 	id = (gd_t *)addr_sp;
 	debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 			sizeof(gd_t), addr_sp);

 	/* Reserve memory for boot params.
 	 */
 	addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
 	bd->bi_boot_params = addr_sp;
 	debug("Reserving %dk for boot params() at: %08lx\n",
 			CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);

 	/*
 	 * Finally, we set up a new (bigger) stack.
 	 *
 	 * Leave some safety gap for SP, force alignment on 16 byte boundary
 	 * Clear initial stack frame
 	 */
 	addr_sp -= 16;
 	addr_sp &= ~0xF;
 	s = (ulong *)addr_sp;
 	*s-- = 0;
 	*s-- = 0;
 	addr_sp = (ulong)s;
 	debug("Stack Pointer at: %08lx\n", addr_sp);

 	/*
 	 * Save local variables to board info struct
 	 */
 	bd->bi_memstart	= CONFIG_SYS_SDRAM_BASE;	/* start of DRAM */
 	bd->bi_memsize	= gd->ram_size;		/* size of DRAM in bytes */
 	bd->bi_baudrate	= gd->baudrate;		/* Console Baudrate */

 	memcpy(id, (void *)gd, sizeof(gd_t));

 	relocate_code(addr_sp, id, addr);

 	/* NOTREACHED - relocate_code() does not return */
 }

 /*
  * This is the next part if the initialization sequence: we are now
  * running from RAM and have a "normal" C environment, i. e. global
  * data can be written, BSS has been cleared, the stack size in not
  * that critical any more, etc.
  */

 void board_init_r(gd_t *id, ulong dest_addr)
 {
 #ifndef CONFIG_SYS_NO_FLASH
 	ulong size;
 #endif
 	extern void malloc_bin_reloc(void);
 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char *env_name_spec;
 #endif
 	bd_t *bd;

 	gd = id;
 	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */

 	debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

 	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;

 	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;

 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 	/*
 	 * We have to relocate the command table manually
 	 */
 	fixup_cmdtable(&__u_boot_cmd_start,
 		(ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */

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

 	bd = gd->bd;

 	/* The Malloc area is immediately below the monitor copy in DRAM */
 	mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
 			TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
 	malloc_bin_reloc();

 #ifndef CONFIG_SYS_NO_FLASH
 	/* configure available FLASH banks */
 	size = flash_init();
 	display_flash_config(size);
 	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 	bd->bi_flashsize = size;

 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
 	bd->bi_flashoffset = monitor_flash_len;	/* reserved area for U-Boot */
 #else
 	bd->bi_flashoffset = 0;
 #endif
 #else
 	bd->bi_flashstart = 0;
 	bd->bi_flashsize = 0;
 	bd->bi_flashoffset = 0;
 #endif

 #ifdef CONFIG_CMD_NAND
 	puts("NAND:  ");
 	nand_init();		/* go init the NAND */
 #endif

 #if defined(CONFIG_CMD_ONENAND)
 	onenand_init();
 #endif

 	/* relocate environment function pointers etc. */
 	env_relocate();

 #if defined(CONFIG_PCI)
 	/*
 	 * Do pci configuration
 	 */
 	pci_init();
 #endif

 /** leave this here (after malloc(), environment and PCI are working) **/
 	/* Initialize stdio devices */
 	stdio_init();

 	jumptable_init();

 	/* Initialize the console (after the relocation and devices init) */
 	console_init_r();
 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/

 	/* Initialize from environment */
 	load_addr = getenv_ulong("loadaddr", 16, load_addr);

 #ifdef CONFIG_CMD_SPI
 	puts("SPI:   ");
 	spi_init();		/* go init the SPI */
 	puts("ready\n");
 #endif

 #if defined(CONFIG_MISC_INIT_R)
 	/* miscellaneous platform dependent initialisations */
 	misc_init_r();
 #endif

 #ifdef CONFIG_BITBANGMII
 	bb_miiphy_init();
 #endif
 #if defined(CONFIG_CMD_NET)
 	puts("Net:   ");
 	eth_initialize(gd->bd);
 #endif

 	/* main_loop() can return to retry autoboot, if so just run it again. */
 	for (;;)
 		main_loop();

 	/* NOTREACHED - no way out of command loop except booting */
 }

 void hang(void)
 {
 	puts("### ERROR ### Please RESET the board ###\n");
 	for (;;)
 		;
 }
	/*
	* (C) Copyright 2003
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* 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 <version.h>
	#include <net.h>
	#include <environment.h>
	#include <nand.h>
	#include <onenand_uboot.h>
	#include <spi.h>

	#ifdef CONFIG_BITBANGMII
	#include <miiphy.h>
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	ulong monitor_flash_len;

	static char failed = " failed *\n";

	/*
	* mips_io_port_base is the begin of the address space to which x86 style
	* I/O ports are mapped.
	*/
	unsigned long mips_io_port_base = -1;

	int __board_early_init_f(void)
	{
	/*
	* Nothing to do in this dummy implementation
	*/
	return 0;
	}
	int board_early_init_f(void)
	__attribute__((weak, alias("__board_early_init_f")));

	static int init_func_ram(void)
	{
	#ifdef CONFIG_BOARD_TYPES
	int board_type = gd->board_type;
	#else
	int board_type = 0; /* use dummy arg */
	#endif
	puts("DRAM: ");

	gd->ram_size = initdram(board_type);
	if (gd->ram_size > 0) {
	print_size(gd->ram_size, "\n");
	return 0;
	}
	puts(failed);
	return 1;
	}

	static int display_banner(void)
	{

	printf("\n\n%s\n\n", version_string);
	return 0;
	}

	#ifndef CONFIG_SYS_NO_FLASH
	static void display_flash_config(ulong size)
	{
	puts("Flash: ");
	print_size(size, "\n");
	}
	#endif

	static int init_baudrate(void)
	{
	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
	return 0;
	}


	/*
	* Breath some life into the board...
	*
	* The first part of initialization is running from Flash memory;
	* its main purpose is to initialize the RAM so that we
	* can relocate the monitor code to RAM.
	*/

	/*
	* All attempts to come up with a "common" initialization sequence
	* that works for all boards and architectures failed: some of the
	* requirements are just _too_ different. To get rid of the resulting
	* mess of board dependend #ifdef'ed code we now make the whole
	* initialization sequence configurable to the user.
	*
	* The requirements for any new initalization function is simple: it
	* receives a pointer to the "global data" structure as it's only
	* argument, and returns an integer return code, where 0 means
	* "continue" and != 0 means "fatal error, hang the system".
	*/
	typedef int (init_fnc_t)(void);

	init_fnc_t *init_sequence[] = {
	board_early_init_f,
	timer_init,
	env_init, /* initialize environment */
	#ifdef CONFIG_INCA_IP
	incaip_set_cpuclk, /* set cpu clock according to env. variable */
	#endif
	init_baudrate, /* initialize baudrate settings */
	serial_init, /* serial communications setup */
	console_init_f,
	display_banner, /* say that we are here */
	checkboard,
	init_func_ram,
	NULL,
	};


	void board_init_f(ulong bootflag)
	{
	gd_t gd_data, *id;
	bd_t *bd;
	init_fnc_t **init_fnc_ptr;
	ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
	ulong *s;

	/* Pointer is writable since we allocated a register for it.
	*/
	gd = &gd_data;
	/* compiler optimization barrier needed for GCC >= 3.4 */
	__asm__ __volatile__("" : : : "memory");

	memset((void *)gd, 0, sizeof(gd_t));

	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
	if ((*init_fnc_ptr)() != 0)
	hang();
	}

	/*
	* Now that we have DRAM mapped and working, we can
	* relocate the code and continue running from DRAM.
	*/
	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;

	/* We can reserve some RAM "on top" here.
	*/

	/* round down to next 4 kB limit.
	*/
	addr &= ~(4096 - 1);
	debug("Top of RAM usable for U-Boot at: %08lx\n", addr);

	/* Reserve memory for U-Boot code, data & bss
	* round down to next 16 kB limit
	*/
	addr -= len;
	addr &= ~(16 * 1024 - 1);

	debug("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);

	/* Reserve memory for malloc() arena.
	*/
	addr_sp = addr - TOTAL_MALLOC_LEN;
	debug("Reserving %dk for malloc() at: %08lx\n",
	TOTAL_MALLOC_LEN >> 10, addr_sp);

	/*
	* (permanently) allocate a Board Info struct
	* and a permanent copy of the "global" data
	*/
	addr_sp -= sizeof(bd_t);
	bd = (bd_t *)addr_sp;
	gd->bd = bd;
	debug("Reserving %zu Bytes for Board Info at: %08lx\n",
	sizeof(bd_t), addr_sp);

	addr_sp -= sizeof(gd_t);
	id = (gd_t *)addr_sp;
	debug("Reserving %zu Bytes for Global Data at: %08lx\n",
	sizeof(gd_t), addr_sp);

	/* Reserve memory for boot params.
	*/
	addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
	bd->bi_boot_params = addr_sp;
	debug("Reserving %dk for boot params() at: %08lx\n",
	CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);

	/*
	* Finally, we set up a new (bigger) stack.
	*
	* Leave some safety gap for SP, force alignment on 16 byte boundary
	* Clear initial stack frame
	*/
	addr_sp -= 16;
	addr_sp &= ~0xF;
	s = (ulong *)addr_sp;
	*s-- = 0;
	*s-- = 0;
	addr_sp = (ulong)s;
	debug("Stack Pointer at: %08lx\n", addr_sp);

	/*
	* Save local variables to board info struct
	*/
	bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM */
	bd->bi_memsize = gd->ram_size; /* size of DRAM in bytes */
	bd->bi_baudrate = gd->baudrate; /* Console Baudrate */

	memcpy(id, (void *)gd, sizeof(gd_t));

	relocate_code(addr_sp, id, addr);

	/* NOTREACHED - relocate_code() does not return */
	}

	/*
	* This is the next part if the initialization sequence: we are now
	* running from RAM and have a "normal" C environment, i. e. global
	* data can be written, BSS has been cleared, the stack size in not
	* that critical any more, etc.
	*/

	void board_init_r(gd_t *id, ulong dest_addr)
	{
	#ifndef CONFIG_SYS_NO_FLASH
	ulong size;
	#endif
	extern void malloc_bin_reloc(void);
	#ifndef CONFIG_ENV_IS_NOWHERE
	extern char *env_name_spec;
	#endif
	bd_t *bd;

	gd = id;
	gd->flags \|= GD_FLG_RELOC; /* tell others: relocation done */

	debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;

	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;

	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	/*
	* We have to relocate the command table manually
	*/
	fixup_cmdtable(&__u_boot_cmd_start,
	(ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
	#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */

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

	bd = gd->bd;

	/* The Malloc area is immediately below the monitor copy in DRAM */
	mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
	TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
	malloc_bin_reloc();

	#ifndef CONFIG_SYS_NO_FLASH
	/* configure available FLASH banks */
	size = flash_init();
	display_flash_config(size);
	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
	bd->bi_flashsize = size;

	#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
	bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
	#else
	bd->bi_flashoffset = 0;
	#endif
	#else
	bd->bi_flashstart = 0;
	bd->bi_flashsize = 0;
	bd->bi_flashoffset = 0;
	#endif

	#ifdef CONFIG_CMD_NAND
	puts("NAND: ");
	nand_init(); /* go init the NAND */
	#endif

	#if defined(CONFIG_CMD_ONENAND)
	onenand_init();
	#endif

	/* relocate environment function pointers etc. */
	env_relocate();

	#if defined(CONFIG_PCI)
	/*
	* Do pci configuration
	*/
	pci_init();
	#endif

	/ leave this here (after malloc(), environment and PCI are working) /
	/* Initialize stdio devices */
	stdio_init();

	jumptable_init();

	/* Initialize the console (after the relocation and devices init) */
	console_init_r();
	/ /

	/* Initialize from environment */
	load_addr = getenv_ulong("loadaddr", 16, load_addr);

	#ifdef CONFIG_CMD_SPI
	puts("SPI: ");
	spi_init(); /* go init the SPI */
	puts("ready\n");
	#endif

	#if defined(CONFIG_MISC_INIT_R)
	/* miscellaneous platform dependent initialisations */
	misc_init_r();
	#endif

	#ifdef CONFIG_BITBANGMII
	bb_miiphy_init();
	#endif
	#if defined(CONFIG_CMD_NET)
	puts("Net: ");
	eth_initialize(gd->bd);
	#endif

	/* main_loop() can return to retry autoboot, if so just run it again. */
	for (;;)
	main_loop();

	/* NOTREACHED - no way out of command loop except booting */
	}

	void hang(void)
	{
	puts("### ERROR ### Please RESET the board ###\n");
	for (;;)
	;
	}