--- /dev/null
+/*
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * To match the U-Boot user interface on ARM platforms to the U-Boot
+ * standard (as on PPC platforms), some messages with debug character
+ * are removed from the default U-Boot build.
+ *
+ * Define DEBUG here if you want additional info as shown below
+ * printed upon startup:
+ *
+ * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
+ * IRQ Stack: 00ebff7c
+ * FIQ Stack: 00ebef7c
+ */
+
+#include <common.h>
+#include <command.h>
+#include <environment.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+#include <version.h>
+#include <net.h>
+#include <serial.h>
+#include <nand.h>
+#include <onenand_uboot.h>
+#include <mmc.h>
+#include <scsi.h>
+#include <libfdt.h>
+#include <fdtdec.h>
+#include <post.h>
+#include <logbuff.h>
+#include <asm/sections.h>
+
+#ifdef CONFIG_BITBANGMII
+#include <miiphy.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+ulong monitor_flash_len;
+
+#ifdef CONFIG_HAS_DATAFLASH
+extern int AT91F_DataflashInit(void);
+extern void dataflash_print_info(void);
+#endif
+
+#if defined(CONFIG_HARD_I2C) || \
+ defined(CONFIG_SYS_I2C)
+#include <i2c.h>
+#endif
+
+/************************************************************************
+ * Coloured LED functionality
+ ************************************************************************
+ * May be supplied by boards if desired
+ */
+inline void __coloured_LED_init(void) {}
+void coloured_LED_init(void)
+ __attribute__((weak, alias("__coloured_LED_init")));
+inline void __red_led_on(void) {}
+void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
+inline void __red_led_off(void) {}
+void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
+inline void __green_led_on(void) {}
+void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
+inline void __green_led_off(void) {}
+void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
+inline void __yellow_led_on(void) {}
+void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
+inline void __yellow_led_off(void) {}
+void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
+inline void __blue_led_on(void) {}
+void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
+inline void __blue_led_off(void) {}
+void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
+
+/*
+ ************************************************************************
+ * Init Utilities *
+ ************************************************************************
+ * Some of this code should be moved into the core functions,
+ * or dropped completely,
+ * but let's get it working (again) first...
+ */
+
+#if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
+#define CONFIG_BAUDRATE 115200
+#endif
+
+static int init_baudrate(void)
+{
+ gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
+ return 0;
+}
+
+static int display_banner(void)
+{
+ printf("\n\n%s\n\n", version_string);
+ debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
+ (ulong)&_start,
+ (ulong)&__bss_start, (ulong)&__bss_end);
+#ifdef CONFIG_MODEM_SUPPORT
+ debug("Modem Support enabled\n");
+#endif
+#ifdef CONFIG_USE_IRQ
+ debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
+ debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
+#endif
+
+ 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);
+}
+
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
+static int init_func_i2c(void)
+{
+ puts("I2C: ");
+#ifdef CONFIG_SYS_I2C
+ i2c_init_all();
+#else
+ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+ puts("ready\n");
+ return (0);
+}
+#endif
+
+#if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
+#include <pci.h>
+static int arm_pci_init(void)
+{
+ pci_init();
+ return 0;
+}
+#endif /* CONFIG_CMD_PCI || CONFIG_PCI */
+
+/*
+ * 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")));
+
+int __arch_cpu_init(void)
+{
+ return 0;
+}
+int arch_cpu_init(void)
+ __attribute__((weak, alias("__arch_cpu_init")));
+
+int __power_init_board(void)
+{
+ return 0;
+}
+int power_init_board(void)
+ __attribute__((weak, alias("__power_init_board")));
+
+ /* Record the board_init_f() bootstage (after arch_cpu_init()) */
+static int mark_bootstage(void)
+{
+ bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
+
+ return 0;
+}
+
+init_fnc_t *init_sequence[] = {
+ arch_cpu_init, /* basic arch cpu dependent setup */
+ mark_bootstage,
+#ifdef CONFIG_OF_CONTROL
+ fdtdec_check_fdt,
+#endif
+#if defined(CONFIG_BOARD_EARLY_INIT_F)
+ board_early_init_f,
+#endif
+ timer_init, /* initialize timer */
+#ifdef CONFIG_BOARD_POSTCLK_INIT
+ board_postclk_init,
+#endif
+#ifdef CONFIG_FSL_ESDHC
+ get_clocks,
+#endif
+ env_init, /* initialize environment */
+ init_baudrate, /* initialze baudrate settings */
+ serial_init, /* serial communications setup */
+ console_init_f, /* stage 1 init of console */
+ display_banner, /* say that we are here */
+ print_cpuinfo, /* display cpu info (and speed) */
+#if defined(CONFIG_DISPLAY_BOARDINFO)
+ checkboard, /* display board info */
+#endif
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
+ init_func_i2c,
+#endif
+ dram_init, /* configure available RAM banks */
+ NULL,
+};
+
+void board_init_f(ulong bootflag)
+{
+ bd_t *bd;
+ init_fnc_t **init_fnc_ptr;
+ gd_t *id;
+ ulong addr, addr_sp;
+#ifdef CONFIG_PRAM
+ ulong reg;
+#endif
+ void *new_fdt = NULL;
+ size_t fdt_size = 0;
+
+ memset((void *)gd, 0, sizeof(gd_t));
+
+ gd->mon_len = (ulong)&__bss_end - (ulong)_start;
+#ifdef CONFIG_OF_EMBED
+ /* Get a pointer to the FDT */
+ gd->fdt_blob = __dtb_db_begin;
+#elif defined CONFIG_OF_SEPARATE
+ /* FDT is at end of image */
+ gd->fdt_blob = &_end;
+#endif
+ /* Allow the early environment to override the fdt address */
+ gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
+ (uintptr_t)gd->fdt_blob);
+
+ for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+ if ((*init_fnc_ptr)() != 0) {
+ hang ();
+ }
+ }
+
+#ifdef CONFIG_OF_CONTROL
+ /* For now, put this check after the console is ready */
+ if (fdtdec_prepare_fdt()) {
+ panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
+ "doc/README.fdt-control");
+ }
+#endif
+
+ debug("monitor len: %08lX\n", gd->mon_len);
+ /*
+ * Ram is setup, size stored in gd !!
+ */
+ debug("ramsize: %08lX\n", gd->ram_size);
+#if defined(CONFIG_SYS_MEM_TOP_HIDE)
+ /*
+ * Subtract specified amount of memory to hide so that it won't
+ * get "touched" at all by U-Boot. By fixing up gd->ram_size
+ * the Linux kernel should now get passed the now "corrected"
+ * memory size and won't touch it either. This should work
+ * for arch/ppc and arch/powerpc. Only Linux board ports in
+ * arch/powerpc with bootwrapper support, that recalculate the
+ * memory size from the SDRAM controller setup will have to
+ * get fixed.
+ */
+ gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
+#endif
+
+ addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
+
+#ifdef CONFIG_LOGBUFFER
+#ifndef CONFIG_ALT_LB_ADDR
+ /* reserve kernel log buffer */
+ addr -= (LOGBUFF_RESERVE);
+ debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
+ addr);
+#endif
+#endif
+
+#ifdef CONFIG_PRAM
+ /*
+ * reserve protected RAM
+ */
+ reg = getenv_ulong("pram", 10, CONFIG_PRAM);
+ addr -= (reg << 10); /* size is in kB */
+ debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
+#endif /* CONFIG_PRAM */
+
+#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
+ /* reserve TLB table */
+ gd->arch.tlb_size = PGTABLE_SIZE;
+ addr -= gd->arch.tlb_size;
+
+ /* round down to next 64 kB limit */
+ addr &= ~(0x10000 - 1);
+
+ gd->arch.tlb_addr = addr;
+ debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
+#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);
+
+#ifndef CONFIG_SPL_BUILD
+ /*
+ * 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);
+
+#ifdef CONFIG_MACH_TYPE
+ gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
+#endif
+
+ 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);
+
+#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
+ /*
+ * If the device tree is sitting immediate above our image then we
+ * must relocate it. If it is embedded in the data section, then it
+ * will be relocated with other data.
+ */
+ if (gd->fdt_blob) {
+ fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
+
+ addr_sp -= fdt_size;
+ new_fdt = (void *)addr_sp;
+ debug("Reserving %zu Bytes for FDT at: %08lx\n",
+ fdt_size, addr_sp);
+ }
+#endif
+
+#ifndef CONFIG_ARM64
+ /* 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;
+#else /* CONFIG_ARM64 */
+ /* 16-byte alignment for ABI compliance */
+ addr_sp &= ~0x0f;
+#endif /* CONFIG_ARM64 */
+#else
+ addr_sp += 128; /* leave 32 words for abort-stack */
+ gd->irq_sp = addr_sp;
+#endif
+
+ debug("New Stack Pointer is: %08lx\n", addr_sp);
+
+#ifdef CONFIG_POST
+ post_bootmode_init();
+ post_run(NULL, POST_ROM | post_bootmode_get(0));
+#endif
+
+ /* Ram ist 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 - (ulong)&_start;
+ debug("relocation Offset is: %08lx\n", gd->reloc_off);
+ if (new_fdt) {
+ memcpy(new_fdt, gd->fdt_blob, fdt_size);
+ gd->fdt_blob = new_fdt;
+ }
+ memcpy(id, (void *)gd, sizeof(gd_t));
+}
+
+#if !defined(CONFIG_SYS_NO_FLASH)
+static char *failed = "*** failed ***\n";
+#endif
+
+/*
+ * Tell if it's OK to load the environment early in boot.
+ *
+ * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
+ * if this is OK (defaulting to saying it's not OK).
+ *
+ * NOTE: Loading the environment early can be a bad idea if security is
+ * important, since no verification is done on the environment.
+ *
+ * @return 0 if environment should not be loaded, !=0 if it is ok to load
+ */
+static int should_load_env(void)
+{
+#ifdef CONFIG_OF_CONTROL
+ return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
+#elif defined CONFIG_DELAY_ENVIRONMENT
+ return 0;
+#else
+ return 1;
+#endif
+}
+
+#if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
+static void display_fdt_model(const void *blob)
+{
+ const char *model;
+
+ model = (char *)fdt_getprop(blob, 0, "model", NULL);
+ printf("Model: %s\n", model ? model : "<unknown>");
+}
+#endif
+
+/************************************************************************
+ *
+ * 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)
+{
+ ulong malloc_start;
+#if !defined(CONFIG_SYS_NO_FLASH)
+ ulong flash_size;
+#endif
+
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+ bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
+
+ monitor_flash_len = (ulong)&__rel_dyn_end - (ulong)_start;
+
+ /* Enable caches */
+ enable_caches();
+
+ debug("monitor flash len: %08lX\n", monitor_flash_len);
+ board_init(); /* Setup chipselects */
+ /*
+ * TODO: printing of the clock inforamtion of the board is now
+ * implemented as part of bdinfo command. Currently only support for
+ * davinci SOC's is added. Remove this check once all the board
+ * implement this.
+ */
+#ifdef CONFIG_CLOCKS
+ set_cpu_clk_info(); /* Setup clock information */
+#endif
+ serial_initialize();
+
+ debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+#ifdef CONFIG_LOGBUFFER
+ logbuff_init_ptrs();
+#endif
+#ifdef CONFIG_POST
+ post_output_backlog();
+#endif
+
+ /* 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);
+
+#ifdef CONFIG_ARCH_EARLY_INIT_R
+ arch_early_init_r();
+#endif
+ power_init_board();
+
+#if !defined(CONFIG_SYS_NO_FLASH)
+ puts("Flash: ");
+
+ flash_size = flash_init();
+ if (flash_size > 0) {
+# ifdef CONFIG_SYS_FLASH_CHECKSUM
+ print_size(flash_size, "");
+ /*
+ * Compute and print flash CRC if flashchecksum is set to 'y'
+ *
+ * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
+ */
+ if (getenv_yesno("flashchecksum") == 1) {
+ printf(" CRC: %08X", crc32(0,
+ (const unsigned char *) CONFIG_SYS_FLASH_BASE,
+ flash_size));
+ }
+ putc('\n');
+# else /* !CONFIG_SYS_FLASH_CHECKSUM */
+ print_size(flash_size, "\n");
+# endif /* CONFIG_SYS_FLASH_CHECKSUM */
+ } else {
+ puts(failed);
+ hang();
+ }
+#endif
+
+#if defined(CONFIG_CMD_NAND)
+ puts("NAND: ");
+ nand_init(); /* go init the NAND */
+#endif
+
+#if defined(CONFIG_CMD_ONENAND)
+ onenand_init();
+#endif
+
+#ifdef CONFIG_GENERIC_MMC
+ puts("MMC: ");
+ mmc_initialize(gd->bd);
+#endif
+
+#ifdef CONFIG_CMD_SCSI
+ puts("SCSI: ");
+ scsi_init();
+#endif
+
+#ifdef CONFIG_HAS_DATAFLASH
+ AT91F_DataflashInit();
+ dataflash_print_info();
+#endif
+
+ /* initialize environment */
+ if (should_load_env())
+ env_relocate();
+ else
+ set_default_env(NULL);
+
+#if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
+ arm_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 */
+
+#ifdef CONFIG_DISPLAY_BOARDINFO_LATE
+# ifdef CONFIG_OF_CONTROL
+ /* Put this here so it appears on the LCD, now it is ready */
+ display_fdt_model(gd->fdt_blob);
+# else
+ checkboard();
+# endif
+#endif
+
+#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
+
+ /* set up exceptions */
+ interrupt_init();
+ /* enable exceptions */
+ enable_interrupts();
+
+ /* Initialize from environment */
+ load_addr = getenv_ulong("loadaddr", 16, load_addr);
+
+#ifdef CONFIG_BOARD_LATE_INIT
+ board_late_init();
+#endif
+
+#ifdef CONFIG_BITBANGMII
+ bb_miiphy_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
+
+#ifdef CONFIG_POST
+ post_run(NULL, POST_RAM | post_bootmode_get(0));
+#endif
+
+#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
+ /*
+ * Export available size of memory for Linux,
+ * taking into account the protected RAM at top of memory
+ */
+ {
+ ulong pram = 0;
+ uchar memsz[32];
+
+#ifdef CONFIG_PRAM
+ pram = getenv_ulong("pram", 10, CONFIG_PRAM);
+#endif
+#ifdef CONFIG_LOGBUFFER
+#ifndef CONFIG_ALT_LB_ADDR
+ /* Also take the logbuffer into account (pram is in kB) */
+ pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
+#endif
+#endif
+ sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
+ setenv("mem", (char *)memsz);
+ }
+#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 */
+}
Code Review / kvmfornfv.git / blobdiff