SPARC: Added generic support for SPARC architecture.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

6 files changed, 1025 insertions, 0 deletions

diff --git a/lib_sparc/Makefile b/lib_sparc/Makefile
new file mode 100644
index 0000000..1a354b6
--- /dev/null
+++ b/lib_sparc/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2000-2006
+# 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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(ARCH).a
+
+SOBJS	=
+
+COBJS	= board.o cache.o interrupts.o time.o bootm.o
+
+SRCS 	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/lib_sparc/board.c b/lib_sparc/board.c
new file mode 100644
index 0000000..af301c0
--- /dev/null
+++ b/lib_sparc/board.c
@@ -0,0 +1,521 @@
+/* SPARC Board initialization
+ *
+ * (C) Copyright 2000-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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 <devices.h>
+#include <config.h>
+#if defined(CONFIG_CMD_IDE)
+#include <ide.h>
+#endif
+#ifdef CONFIG_STATUS_LED
+#include <status_led.h>
+#endif
+#include <net.h>
+#include <serial.h>
+#include <version.h>
+#if defined(CONFIG_POST)
+#include <post.h>
+#endif
+#ifdef CONFIG_PS2KBD
+#include <keyboard.h>
+#endif
+#ifdef CONFIG_CMD_AMBAPP
+#include <ambapp.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Debug options
+#define DEBUG_INIT_SEQUENCE
+#define DEBUG_MEM_LAYOUT
+#define DEBUG_COMMANDS
+*/
+
+extern void timer_interrupt_init(void);
+extern void malloc_bin_reloc(void);
+extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
+extern int prom_init(void);
+
+#if defined(CONFIG__CMD_DOC)
+void doc_init(void);
+#endif
+
+#if !defined(CFG_NO_FLASH)
+static char *failed = "*** failed ***\n";
+#endif
+
+#include <environment.h>
+
+ulong monitor_flash_len;
+
+/*
+ * Begin and End of memory area for malloc(), and current "brk"
+ */
+static ulong mem_malloc_start = 0;
+static ulong mem_malloc_end = 0;
+static ulong mem_malloc_brk = 0;
+
+/************************************************************************
+ * Utilities								*
+ ************************************************************************
+ */
+
+/*
+ * The Malloc area is immediately below the monitor copy in RAM
+ */
+static void mem_malloc_init(void)
+{
+	mem_malloc_start = CFG_MALLOC_BASE;
+	mem_malloc_end = CFG_MALLOC_END;
+	mem_malloc_brk = mem_malloc_start;
+	memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
+}
+
+void *sbrk(ptrdiff_t increment)
+{
+	ulong old = mem_malloc_brk;
+	ulong new = old + increment;
+
+	if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
+		return (NULL);
+	}
+	mem_malloc_brk = new;
+	return ((void *)old);
+}
+
+/***********************************************************************/
+
+/************************************************************************
+ * Init Utilities							*
+ ************************************************************************
+ * Some of this code should be moved into the core functions,
+ * but let's get it working (again) first...
+ */
+
+static int init_baudrate(void)
+{
+	char tmp[64];		/* long enough for environment variables */
+	int i = getenv_r("baudrate", tmp, sizeof(tmp));
+
+	gd->baudrate = (i > 0)
+	    ? (int)simple_strtoul(tmp, NULL, 10)
+	    : CONFIG_BAUDRATE;
+	return (0);
+}
+
+/***********************************************************************/
+
+/*
+ * 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);
+
+#define WATCHDOG_RESET(x)
+
+/************************************************************************
+ * Initialization sequence						*
+ ************************************************************************
+ */
+
+init_fnc_t *init_sequence[] = {
+
+#if defined(CONFIG_BOARD_EARLY_INIT_F)
+	board_early_init_f,
+#endif
+	serial_init,
+
+	init_timebase,
+
+#if defined(CONFIG_CMD_AMBAPP)
+	ambapp_init_reloc,
+#endif
+
+	env_init,
+
+	init_baudrate,
+
+	console_init_f,
+	display_options,
+
+	checkcpu,
+	checkboard,
+#if defined(CONFIG_MISC_INIT_F)
+	misc_init_f,
+#endif
+
+#ifdef CONFIG_POST
+	post_init_f,
+#endif
+
+	NULL,			/* Terminate this list,
+				 * beware: this list will be relocated
+				 * which means that NULL will become
+				 * NULL+RELOC_OFFSET. We simply make
+				 * NULL be -RELOC_OFFSET instead.
+				 */
+};
+
+/************************************************************************
+ *
+ * This is the SPARC board initialization routine, running from RAM.
+ *
+ ************************************************************************
+ */
+#ifdef DEBUG_INIT_SEQUENCE
+char *str_init_seq = "INIT_SEQ 00\n";
+char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
+#endif
+
+void board_init_f(ulong bootflag)
+{
+	cmd_tbl_t *cmdtp;
+	bd_t *bd;
+	unsigned char *s;
+	init_fnc_t **init_fnc_ptr;
+	int j;
+	int i;
+	char *e;
+
+#ifndef CFG_NO_FLASH
+	ulong flash_size;
+#endif
+
+	gd = (gd_t *) (CFG_GBL_DATA_OFFSET);
+
+	/* Clear initial global data */
+	memset((void *)gd, 0, sizeof(gd_t));
+
+	gd->bd = (bd_t *) (gd + 1);	/* At end of global data */
+	gd->baudrate = CONFIG_BAUDRATE;
+	gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
+
+	bd = gd->bd;
+	bd->bi_memstart = CFG_RAM_BASE;
+	bd->bi_memsize = CFG_RAM_SIZE;
+	bd->bi_flashstart = CFG_FLASH_BASE;
+#if	defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
+	bd->bi_sramstart = CFG_SRAM_BASE;
+	bd->bi_sramsize = CFG_SRAM_SIZE;
+#endif
+	bd->bi_baudrate = CONFIG_BAUDRATE;
+	bd->bi_bootflags = bootflag;	/* boot / reboot flag (for LynxOS)    */
+
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+	gd->reloc_off = CFG_RELOC_MONITOR_BASE - CFG_MONITOR_BASE;
+
+	for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
+	     ++init_fnc_ptr, j++) {
+#ifdef DEBUG_INIT_SEQUENCE
+		if (j > 9)
+			str_init_seq[9] = '0' + (j / 10);
+		str_init_seq[10] = '0' + (j - (j / 10) * 10);
+		serial_puts(str_init_seq);
+#endif
+		if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
+			hang();
+		}
+	}
+#ifdef DEBUG_INIT_SEQUENCE
+	serial_puts(str_init_seq_done);
+#endif
+
+	/*
+	 * 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):
+	 *  - kernel log buffer
+	 *  - protected RAM
+	 *  - LCD framebuffer
+	 *  - monitor code
+	 *  - board info struct
+	 */
+#ifdef DEBUG_MEM_LAYOUT
+	printf("CFG_MONITOR_BASE:       0x%lx\n", CFG_MONITOR_BASE);
+	printf("CFG_ENV_ADDR:           0x%lx\n", CFG_ENV_ADDR);
+	printf("CFG_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CFG_RELOC_MONITOR_BASE,
+	       CFG_MONITOR_LEN);
+	printf("CFG_MALLOC_BASE:        0x%lx (%d)\n", CFG_MALLOC_BASE,
+	       CFG_MALLOC_LEN);
+	printf("CFG_INIT_SP_OFFSET:     0x%lx (%d)\n", CFG_INIT_SP_OFFSET,
+	       CFG_STACK_SIZE);
+	printf("CFG_PROM_OFFSET:        0x%lx (%d)\n", CFG_PROM_OFFSET,
+	       CFG_PROM_SIZE);
+	printf("CFG_GBL_DATA_OFFSET:    0x%lx (%d)\n", CFG_GBL_DATA_OFFSET,
+	       CFG_GBL_DATA_SIZE);
+#endif
+
+#ifdef CONFIG_POST
+	post_bootmode_init();
+	post_run(NULL, POST_ROM | post_bootmode_get(0));
+#endif
+
+	/*
+	 * We have to relocate the command table manually
+	 */
+	for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
+		ulong addr;
+		addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
+#if DEBUG_COMMANDS
+		printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
+		       cmdtp->name, (ulong) (cmdtp->cmd), addr);
+#endif
+		cmdtp->cmd =
+		    (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
+
+		addr = (ulong) (cmdtp->name) + gd->reloc_off;
+		cmdtp->name = (char *)addr;
+
+		if (cmdtp->usage) {
+			addr = (ulong) (cmdtp->usage) + gd->reloc_off;
+			cmdtp->usage = (char *)addr;
+		}
+#ifdef	CFG_LONGHELP
+		if (cmdtp->help) {
+			addr = (ulong) (cmdtp->help) + gd->reloc_off;
+			cmdtp->help = (char *)addr;
+		}
+#endif
+	}
+
+#if defined(CONFIG_CMD_AMBAPP) && defined(CFG_AMBAPP_PRINT_ON_STARTUP)
+	puts("AMBA:\n");
+	do_ambapp_print(NULL, 0, 0, NULL);
+#endif
+
+	/* initialize higher level parts of CPU like time base and timers */
+	cpu_init_r();
+
+	/* start timer */
+	timer_interrupt_init();
+
+	/*
+	 * Enable Interrupts before any calls to udelay,
+	 * the flash driver may use udelay resulting in
+	 * a hang if not timer0 IRQ is enabled.
+	 */
+	interrupt_init();
+
+#if !defined(CFG_NO_FLASH)
+	puts("FLASH: ");
+
+	if ((flash_size = flash_init()) > 0) {
+# ifdef CFG_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
+		 */
+		s = getenv("flashchecksum");
+		if (s && (*s == 'y')) {
+			printf("  CRC: %08lX",
+			       crc32(0, (const unsigned char *)CFG_FLASH_BASE,
+				     flash_size)
+			    );
+		}
+		putc('\n');
+# else				/* !CFG_FLASH_CHECKSUM */
+		print_size(flash_size, "\n");
+# endif				/* CFG_FLASH_CHECKSUM */
+	} else {
+		puts(failed);
+		hang();
+	}
+
+	bd->bi_flashstart = CFG_FLASH_BASE;	/* update start of FLASH memory    */
+	bd->bi_flashsize = flash_size;	/* size of FLASH memory (final value) */
+#if CFG_MONITOR_BASE == CFG_FLASH_BASE
+	bd->bi_flashoffset = monitor_flash_len;	/* reserved area for startup monitor  */
+#else
+	bd->bi_flashoffset = 0;
+#endif
+#else				/* CFG_NO_FLASH */
+	bd->bi_flashsize = 0;
+	bd->bi_flashstart = 0;
+	bd->bi_flashoffset = 0;
+#endif				/* !CFG_NO_FLASH */
+
+	/* initialize malloc() area */
+	mem_malloc_init();
+
+	malloc_bin_reloc();
+
+#ifdef CONFIG_SPI
+# if !defined(CFG_ENV_IS_IN_EEPROM)
+	spi_init_f();
+# endif
+	spi_init_r();
+#endif
+
+	/* relocate environment function pointers etc. */
+	env_relocate();
+
+#if defined(CONFIG_BOARD_LATE_INIT)
+	board_late_init();
+#endif
+
+	s = getenv("ethaddr");
+	for (i = 0; i < 6; ++i) {
+		bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
+		if (s)
+			s = (*e) ? e + 1 : e;
+	}
+
+#ifdef CONFIG_HAS_ETH1
+	/* handle the 2nd ethernet address */
+
+	s = getenv("eth1addr");
+
+	for (i = 0; i < 6; ++i) {
+		bd->bi_enet1addr[i] = s ? simple_strtoul(s, &e, 16) : 0;
+		if (s)
+			s = (*e) ? e + 1 : e;
+	}
+#endif
+
+#ifdef CFG_ID_EEPROM
+	mac_read_from_eeprom();
+#endif
+
+	/* IP Address */
+	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
+#if defined(CONFIG_PCI)
+	/*
+	 * Do pci configuration
+	 */
+	pci_init();
+#endif
+
+	/* Initialize devices */
+	devices_init();
+
+	/* Initialize the jump table for applications */
+	jumptable_init();
+
+	/* Initialize the console (after the relocation and devices init) */
+	console_init_r();
+
+#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
+	serial_buffered_init();
+#endif
+
+#ifdef CONFIG_STATUS_LED
+	status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
+#endif
+
+	udelay(20);
+
+	set_timer(0);
+
+	/* Initialize from environment */
+	if ((s = getenv("loadaddr")) != NULL) {
+		load_addr = simple_strtoul(s, NULL, 16);
+	}
+#if defined(CONFIG_CMD_NET)
+	if ((s = getenv("bootfile")) != NULL) {
+		copy_filename(BootFile, s, sizeof(BootFile));
+	}
+#endif				/* CFG_CMD_NET */
+
+	WATCHDOG_RESET();
+
+#if defined(CONFIG_CMD_DOC)
+	WATCHDOG_RESET();
+	puts("DOC:   ");
+	doc_init();
+#endif
+
+#if defined(CONFIG_CMD_NET)
+#if defined(CONFIG_NET_MULTI)
+	WATCHDOG_RESET();
+	puts("Net:   ");
+#endif
+	eth_initialize(bd);
+#endif
+
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
+	WATCHDOG_RESET();
+	debug("Reset Ethernet PHY\n");
+	reset_phy();
+#endif
+
+#ifdef CONFIG_POST
+	post_run(NULL, POST_RAM | post_bootmode_get(0));
+#endif
+
+#if defined(CONFIG_CMD_IDE)
+	WATCHDOG_RESET();
+	puts("IDE:   ");
+	ide_init();
+#endif				/* CFG_CMD_IDE */
+
+#ifdef CONFIG_LAST_STAGE_INIT
+	WATCHDOG_RESET();
+	/*
+	 * Some parts can be only initialized if all others (like
+	 * Interrupts) are up and running (i.e. the PC-style ISA
+	 * keyboard).
+	 */
+	last_stage_init();
+#endif
+
+#ifdef CONFIG_PS2KBD
+	puts("PS/2:  ");
+	kbd_init();
+#endif
+	prom_init();
+
+	/* main_loop */
+	for (;;) {
+		WATCHDOG_RESET();
+		main_loop();
+	}
+
+}
+
+void hang(void)
+{
+	puts("### ERROR ### Please RESET the board ###\n");
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+	show_boot_progress(-30);
+#endif
+	for (;;) ;
+}
+
+/************************************************************************/
diff --git a/lib_sparc/bootm.c b/lib_sparc/bootm.c
new file mode 100644
index 0000000..8900b2e
--- /dev/null
+++ b/lib_sparc/bootm.c
@@ -0,0 +1,226 @@
+/* SPARC code for booting linux 2.6
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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 <asm/byteorder.h>
+#include <asm/prom.h>
+#include <asm/cache.h>
+
+#define PRINT_KERNEL_HEADER
+
+extern image_header_t header;
+extern void srmmu_init_cpu(unsigned int entry);
+extern void prepare_bootargs(char *bootargs);
+extern int do_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
+
+#ifdef CONFIG_USB_UHCI
+extern int usb_lowlevel_stop(void);
+#endif
+
+/* sparc kernel argument (the ROM vector) */
+struct linux_romvec *kernel_arg_promvec;
+
+/* page szie is 4k */
+#define PAGE_SIZE 0x1000
+#define RAMDISK_IMAGE_START_MASK	0x07FF
+#define RAMDISK_PROMPT_FLAG		0x8000
+#define RAMDISK_LOAD_FLAG		0x4000
+struct __attribute__ ((packed)) {
+	char traptable[PAGE_SIZE];
+	char swapper_pg_dir[PAGE_SIZE];
+	char pg0[PAGE_SIZE];
+	char pg1[PAGE_SIZE];
+	char pg2[PAGE_SIZE];
+	char pg3[PAGE_SIZE];
+	char empty_bad_page[PAGE_SIZE];
+	char empty_bad_page_table[PAGE_SIZE];
+	char empty_zero_page[PAGE_SIZE];
+	unsigned char hdr[4];	/* ascii "HdrS" */
+	/* 00.02.06.0b is for Linux kernel 2.6.11 */
+	unsigned char linuxver_mega_major;
+	unsigned char linuxver_major;
+	unsigned char linuxver_minor;
+	unsigned char linuxver_revision;
+	/* header version 0x0203 */
+	unsigned short hdr_ver;
+	union __attribute__ ((packed)) {
+		struct __attribute__ ((packed)) {
+			unsigned short root_flags;
+			unsigned short root_dev;
+			unsigned short ram_flags;
+			unsigned int sparc_ramdisk_image;
+			unsigned int sparc_ramdisk_size;
+			unsigned int reboot_command;
+			unsigned int resv[3];
+			unsigned int end;
+		} ver_0203;
+	} hdr_input;
+} *linux_hdr;
+
+/* temporary initrd image holder */
+image_header_t ihdr;
+
+/* boot the linux kernel */
+void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
+		    bootm_headers_t * images)
+{
+	char *bootargs;
+	ulong ep, load;
+	ulong initrd_start, initrd_end;
+	ulong rd_data_start, rd_data_end, rd_len;
+	unsigned int data, len, checksum;
+	unsigned int initrd_addr, kernend;
+	void (*kernel) (struct linux_romvec *, void *);
+	struct lmb *lmb = images->lmb;
+	int ret;
+
+	if (images->legacy_hdr_valid) {
+		ep = image_get_ep(images->legacy_hdr_os);
+		load = image_get_load(images->legacy_hdr_os);
+#if defined(CONFIG_FIT)
+	} else if (images->fit_uname_os) {
+		int ret = fit_image_get_entry(images->fit_hdr_os,
+					      images->fit_noffset_os, &ep);
+		if (ret) {
+			puts("Can't get entry point property!\n");
+			goto error;
+		}
+
+		ret = fit_image_get_load(images->fit_hdr_os,
+					 images->fit_noffset_os, &load);
+		if (ret) {
+			puts("Can't get load address property!\n");
+			goto error;
+		}
+#endif
+	} else {
+		puts("Could not find kernel entry point!\n");
+		goto error;
+	}
+
+	/* Get virtual address of kernel start */
+	linux_hdr = (void *)load;
+
+	/* */
+	kernel = (void (*)(struct linux_romvec *, void *))ep;
+
+	/* check for a SPARC kernel */
+	if ((linux_hdr->hdr[0] != 'H') ||
+	    (linux_hdr->hdr[1] != 'd') ||
+	    (linux_hdr->hdr[2] != 'r') || (linux_hdr->hdr[3] != 'S')) {
+		puts("Error reading header of SPARC Linux kernel, aborting\n");
+		goto error;
+	}
+#ifdef PRINT_KERNEL_HEADER
+	printf("## Found SPARC Linux kernel %d.%d.%d ...\n",
+	       linux_hdr->linuxver_major,
+	       linux_hdr->linuxver_minor, linux_hdr->linuxver_revision);
+#endif
+
+#ifdef CONFIG_USB_UHCI
+	usb_lowlevel_stop();
+#endif
+
+	/* set basic boot params in kernel header now that it has been
+	 * extracted and is writeable.
+	 */
+
+	/*
+	 * Are we going to use an initrd image?
+	 */
+	ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_SPARC,
+			       &rd_data_start, &rd_data_end);
+	if (ret) {
+		/* RAM disk found but was corrupt */
+		puts("RAM Disk corrupt\n");
+		goto error;
+	}
+
+	/* Calc length of RAM disk, if zero no ramdisk available */
+	rd_len = rd_data_end - rd_data_start;
+
+	if (rd_len) {
+
+		/* Reserve the space used by PROM and stack. This is done
+		 * to avoid that the RAM image is copied over stack or
+		 * PROM.
+		 */
+		lmb_reserve(lmb, CFG_RELOC_MONITOR_BASE, CFG_RAM_END);
+
+		ret = boot_ramdisk_high(lmb, rd_data_start, rd_len,
+					&initrd_start, &initrd_end);
+		if (ret) {
+			puts("### Failed to relocate RAM disk\n");
+			goto error;
+		}
+
+		/* Update SPARC kernel header so that Linux knows
+		 * what is going on and where to find RAM disk.
+		 *
+		 * Set INITRD Image address relative to RAM Start
+		 */
+		linux_hdr->hdr_input.ver_0203.sparc_ramdisk_image =
+		    initrd_start - CFG_RAM_BASE;
+		linux_hdr->hdr_input.ver_0203.sparc_ramdisk_size = rd_len;
+		/* Clear READ ONLY flag if set to non-zero */
+		linux_hdr->hdr_input.ver_0203.root_flags = 1;
+		/* Set root device to: Root_RAM0 */
+		linux_hdr->hdr_input.ver_0203.root_dev = 0x100;
+		linux_hdr->hdr_input.ver_0203.ram_flags = 0;
+	} else {
+		/* NOT using RAMDISK image, overwriting kernel defaults */
+		linux_hdr->hdr_input.ver_0203.sparc_ramdisk_image = 0;
+		linux_hdr->hdr_input.ver_0203.sparc_ramdisk_size = 0;
+		/* Leave to kernel defaults
+		   linux_hdr->hdr_input.ver_0203.root_flags = 1;
+		   linux_hdr->hdr_input.ver_0203.root_dev = 0;
+		   linux_hdr->hdr_input.ver_0203.ram_flags = 0;
+		 */
+	}
+
+	/* Copy bootargs from bootargs variable to kernel readable area */
+	bootargs = getenv("bootargs");
+	prepare_bootargs(bootargs);
+
+	if (!images->autostart)
+		return;
+
+	/* turn on mmu & setup context table & page table for process 0 (kernel) */
+	srmmu_init_cpu((unsigned int)kernel);
+
+	/* Enter SPARC Linux kernel
+	 * From now on the only code in u-boot that will be
+	 * executed is the PROM code.
+	 */
+	kernel(kernel_arg_promvec, (void *)ep);
+
+	/* It will never come to this... */
+	while (1) ;
+
+      error:
+	if (images->autostart)
+		do_reset(cmdtp, flag, argc, argv);
+	return;
+}
diff --git a/lib_sparc/cache.c b/lib_sparc/cache.c
new file mode 100644
index 0000000..59d9bbe
--- /dev/null
+++ b/lib_sparc/cache.c
@@ -0,0 +1,33 @@
+/* Sparc cache library
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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 <asm/processor.h>
+
+void flush_cache(ulong start_addr, ulong size)
+{
+	/* Flush All Cache */
+	sparc_dcache_flush_all();
+	sparc_icache_flush_all();
+}
diff --git a/lib_sparc/interrupts.c b/lib_sparc/interrupts.c
new file mode 100644
index 0000000..4c73b82
--- /dev/null
+++ b/lib_sparc/interrupts.c
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2003
+ * Gleb Natapov <gnatapov@mrv.com>
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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 <asm/processor.h>
+#include <asm/irq.h>
+
+/* Implemented by SPARC CPUs */
+extern int interrupt_init_cpu(void);
+extern void timer_interrupt_cpu(void *arg);
+extern int timer_interrupt_init_cpu(void);
+
+int intLock(void)
+{
+	unsigned int pil;
+
+	pil = get_pil();
+
+	/* set PIL to 15 ==> no pending interrupts will interrupt CPU */
+	set_pil(15);
+
+	return pil;
+}
+
+void intUnlock(int oldLevel)
+{
+	set_pil(oldLevel);
+}
+
+void enable_interrupts(void)
+{
+	set_pil(0);		/* enable all interrupts */
+}
+
+int disable_interrupts(void)
+{
+	return intLock();
+}
+
+int interrupt_init(void)
+{
+	int ret;
+
+	/* call cpu specific function from $(CPU)/interrupts.c */
+	ret = interrupt_init_cpu();
+
+	/* enable global interrupts */
+	enable_interrupts();
+
+	return ret;
+}
+
+/* timer interrupt/overflow counter */
+static volatile ulong timestamp = 0;
+
+/* regs can not be used here! regs is actually the pointer given in
+ * irq_install_handler
+ */
+void timer_interrupt(struct pt_regs *regs)
+{
+	/* call cpu specific function from $(CPU)/interrupts.c */
+	timer_interrupt_cpu((void *)regs);
+
+	timestamp++;
+}
+
+void reset_timer(void)
+{
+	timestamp = 0;
+}
+
+ulong get_timer(ulong base)
+{
+	return (timestamp - base);
+}
+
+void set_timer(ulong t)
+{
+	timestamp = t;
+}
+
+void timer_interrupt_init(void)
+{
+	int irq;
+
+	reset_timer();
+
+	irq = timer_interrupt_init_cpu();
+
+	if (irq < 0) {
+		/* cpu specific code handled the interrupt registration it self */
+		return;
+	}
+	/* register interrupt handler for timer */
+	irq_install_handler(irq, (void (*)(void *))timer_interrupt, NULL);
+}
diff --git a/lib_sparc/time.c b/lib_sparc/time.c
new file mode 100644
index 0000000..433f3eb
--- /dev/null
+++ b/lib_sparc/time.c
@@ -0,0 +1,78 @@
+/*
+ * (C) Copyright 2000, 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.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>
+
+/* Implemented by SPARC CPUs */
+extern void cpu_wait_ticks(unsigned long ticks);
+extern unsigned long cpu_usec2ticks(unsigned long usec);
+extern unsigned long cpu_ticks2usec(unsigned long ticks);
+
+/* ------------------------------------------------------------------------- */
+
+void wait_ticks(unsigned long ticks)
+{
+	cpu_wait_ticks(ticks);
+}
+
+/*
+ * This function is intended for SHORT delays only.
+ */
+unsigned long usec2ticks(unsigned long usec)
+{
+	return cpu_usec2ticks(usec);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * We implement the delay by converting the delay (the number of
+ * microseconds to wait) into a number of time base ticks; then we
+ * watch the time base until it has incremented by that amount.
+ */
+void udelay(unsigned long usec)
+{
+	ulong ticks = usec2ticks(usec);
+
+	wait_ticks(ticks);
+}
+
+/* ------------------------------------------------------------------------- */
+
+unsigned long ticks2usec(unsigned long ticks)
+{
+	return cpu_ticks2usec(ticks);
+}
+
+/* ------------------------------------------------------------------------- */
+
+int init_timebase(void)
+{
+
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */