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  • 2020-06-01
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board.c

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  • Forked from Reform / reform-boundary-uboot
    34570 commits behind the upstream repository.
    board.c 10.68 KiB
    /*
     * (C) Copyright 2002-2006
     * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
     *
     * Copyright (C) 2011 Andes Technology Corporation
     * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
     * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
     *
     * 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 <serial.h>
    #include <nand.h>
    #include <onenand_uboot.h>
    #include <mmc.h>
    
    DECLARE_GLOBAL_DATA_PTR;
    
    ulong monitor_flash_len;
    
    /*
     * Init Utilities
     */
    
    #if !defined(CONFIG_BAUDRATE)
    #define CONFIG_BAUDRATE 38400
    #endif
    static int init_baudrate(void)
    {
    	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
    	return 0;
    }
    
    /*
     * WARNING: this code looks "cleaner" than the PowerPC version, but
     * has the disadvantage that you either get nothing, or everything.
     * On PowerPC, you might see "DRAM: " before the system hangs - which
     * gives a simple yet clear indication which part of the
     * initialization if failing.
     */
    static int display_dram_config(void)
    {
    	int i;
    
    #ifdef DEBUG
    	puts("RAM 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");
    	}
    #else
    	ulong size = 0;
    
    	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
    		size += gd->bd->bi_dram[i].size;
    
    	puts("DRAM:  ");
    	print_size(size, "\n");
    #endif
    
    	return 0;
    }
    
    #ifndef CONFIG_SYS_NO_FLASH
    static void display_flash_config(ulong size)
    {
    	puts("Flash: ");
    	print_size(size, "\n");
    }
    #endif /* CONFIG_SYS_NO_FLASH */
    
    #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
    #include <pci.h>
    static int nds32_pci_init(void)
    {
    	pci_init();
    	return 0;
    }
    #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
    
    #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
    #ifndef CONFIG_SKIP_LOWLEVEL_INIT
    static int pmu_init(void)
    {
    #if defined(CONFIG_FTPMU010_POWER)
    #ifdef __NDS32_N1213_43U1H__	/* AG101: internal definition in toolchain */
    	ftpmu010_sdram_clk_disable(CONFIG_SYS_FTPMU010_PDLLCR0_HCLKOUTDIS);
    	ftpmu010_mfpsr_select_dev(FTPMU010_MFPSR_AC97CLKSEL);
    	ftpmu010_sdramhtc_set(CONFIG_SYS_FTPMU010_SDRAMHTC);
    #endif	/* __NDS32_N1213_43U1H__ */
    #endif
    	return 0;
    }
    #endif
    #endif
    
    /*
     * Breathe some life into the board...
     *
     * Initialize a serial port as console, and carry out some hardware
     * tests.
     *
     * 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 dependent #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);
    
    void __dram_init_banksize(void)
    {
    	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
    	gd->bd->bi_dram[0].size =  gd->ram_size;
    }
    void dram_init_banksize(void)
    	__attribute__((weak, alias("__dram_init_banksize")));
    
    init_fnc_t *init_sequence[] = {
    #if defined(CONFIG_ARCH_CPU_INIT)
    	arch_cpu_init,		/* basic arch cpu dependent setup */
    #endif
    #if defined(CONFIG_PMU) || defined(CONFIG_PCU)
    #ifndef CONFIG_SKIP_LOWLEVEL_INIT
    	pmu_init,
    #endif
    #endif
    	board_init,		/* basic board dependent setup */
    #if defined(CONFIG_USE_IRQ)
    	interrupt_init,		/* set up exceptions */
    #endif
    	timer_init,		/* initialize timer */
    	env_init,		/* initialize environment */
    	init_baudrate,		/* initialze baudrate settings */
    	serial_init,		/* serial communications setup */
    	console_init_f,		/* stage 1 init of console */
    #if defined(CONFIG_DISPLAY_BOARDINFO)
    	checkboard,		/* display board info */
    #endif
    #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
    	init_func_i2c,
    #endif
    	dram_init,		/* configure available RAM banks */
    	display_dram_config,
    	NULL,
    };
    
    void board_init_f(ulong bootflag)
    {
    	bd_t *bd;
    	init_fnc_t **init_fnc_ptr;
    	gd_t *id;
    	ulong addr, addr_sp;
    
    	/* Pointer is writable since we allocated a register for it */
    	gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
    
    	memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
    
    	gd->mon_len = (unsigned int)(&__bss_end__) - (unsigned int)(&_start);
    
    	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
    		if ((*init_fnc_ptr)() != 0)
    			hang();
    	}
    
    	debug("monitor len: %08lX\n", gd->mon_len);
    	/*
    	 * Ram is setup, size stored in gd !!
    	 */
    	debug("ramsize: %08lX\n", gd->ram_size);
    
    	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
    
    #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
    	/* reserve TLB table */
    	addr -= (4096 * 4);
    
    	/* round down to next 64 kB limit */
    	addr &= ~(0x10000 - 1);
    
    	gd->tlb_addr = addr;
    	debug("TLB table at: %08lx\n", addr);
    #endif
    
    	/* round down to next 4 kB limit */
    	addr &= ~(4096 - 1);
    	debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
    
    #ifdef CONFIG_LCD
    #ifdef CONFIG_FB_ADDR
    	gd->fb_base = CONFIG_FB_ADDR;
    #else
    	/* reserve memory for LCD display (always full pages) */
    	addr = lcd_setmem(addr);
    	gd->fb_base = addr;
    #endif /* CONFIG_FB_ADDR */
    #endif /* CONFIG_LCD */
    
    	/*
    	 * reserve memory for U-Boot code, data & bss
    	 * round down to next 4 kB limit
    	 */
    	addr -= gd->mon_len;
    	addr &= ~(4096 - 1);
    
    	debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_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 -= GENERATED_BD_INFO_SIZE;
    	bd = (bd_t *) addr_sp;
    	gd->bd = bd;
    	memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
    	debug("Reserving %zu Bytes for Board Info at: %08lx\n",
    			GENERATED_BD_INFO_SIZE, addr_sp);
    
    	addr_sp -= GENERATED_GBL_DATA_SIZE;
    	id = (gd_t *) addr_sp;
    	debug("Reserving %zu Bytes for Global Data at: %08lx\n",
    			GENERATED_GBL_DATA_SIZE, addr_sp);
    
    	/* setup stackpointer for exeptions */
    	gd->irq_sp = addr_sp;
    #ifdef CONFIG_USE_IRQ
    	addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
    	debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
    		CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
    #endif
    	/* leave 3 words for abort-stack    */
    	addr_sp -= 12;
    
    	/* 8-byte alignment for ABI compliance */
    	addr_sp &= ~0x07;
    	debug("New Stack Pointer is: %08lx\n", addr_sp);
    
    	gd->bd->bi_baudrate = gd->baudrate;
    	/* Ram isn't board specific, so move it to board code ... */
    	dram_init_banksize();
    	display_dram_config();	/* and display it */
    
    	gd->relocaddr = addr;
    	gd->start_addr_sp = addr_sp;
    
    	gd->reloc_off = addr - _TEXT_BASE;
    
    	debug("relocation Offset is: %08lx\n", gd->reloc_off);
    	memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
    
    	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)
    {
    	bd_t *bd;
    	ulong malloc_start;
    
    	gd = id;
    	bd = gd->bd;
    
    	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
    
    	monitor_flash_len = &_end - &_start;
    	debug("monitor flash len: %08lX\n", monitor_flash_len);
    
    	board_init();	/* Setup chipselects */
    
    #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) */
    
    #ifdef CONFIG_SERIAL_MULTI
    	serial_initialize();
    #endif
    
    	debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
    
    	/* The Malloc area is immediately below the monitor copy in DRAM */
    	malloc_start = dest_addr - TOTAL_MALLOC_LEN;
    	mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
    	malloc_bin_reloc();
    
    #ifndef CONFIG_SYS_NO_FLASH
    	/* configure available FLASH banks */
    	gd->bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
    	gd->bd->bi_flashsize = flash_init();
    	gd->bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + gd->bd->bi_flashsize;
    
    	if (gd->bd->bi_flashsize)
    			display_flash_config(gd->bd->bi_flashsize);
    #endif /* CONFIG_SYS_NO_FLASH */
    
    #if defined(CONFIG_CMD_NAND)
    	puts("NAND:  ");
    	nand_init();		/* go init the NAND */
    #endif
    
    #if defined(CONFIG_CMD_IDE)
    	puts("IDE:   ");
    	ide_init();
    #endif
    
    #ifdef CONFIG_GENERIC_MMC
    	puts("MMC:   ");
    	mmc_initialize(gd->bd);
    #endif
    
    	/* initialize environment */
    	env_relocate();
    
    #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
    	puts("PCI:   ");
    	nds32_pci_init();
    #endif
    
    	stdio_init();	/* get the devices list going. */
    
    	jumptable_init();
    
    #if defined(CONFIG_API)
    	/* Initialize API */
    	api_init();
    #endif
    
    	console_init_r();	/* fully init console as a device */
    
    #if defined(CONFIG_ARCH_MISC_INIT)
    	/* miscellaneous arch dependent initialisations */
    	arch_misc_init();
    #endif
    #if defined(CONFIG_MISC_INIT_R)
    	/* miscellaneous platform dependent initialisations */
    	misc_init_r();
    #endif
    
    #if defined(CONFIG_USE_IRQ)
    	/* set up exceptions */
    	interrupt_init();
    	/* enable exceptions */
    	enable_interrupts();
    #endif
    
    	/* Initialize from environment */
    	load_addr = getenv_ulong("loadaddr", 16, load_addr);
    
    #ifdef BOARD_LATE_INIT
    	board_late_init();
    #endif
    
    #if defined(CONFIG_CMD_NET)
    	puts("Net:   ");
    
    	eth_initialize(gd->bd);
    #if defined(CONFIG_RESET_PHY_R)
    	debug("Reset Ethernet PHY\n");
    	reset_phy();
    #endif
    #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 (;;)
    		;
    }