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SPARC: Added generic support for SPARC architecture.

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Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
This commit is contained in:
Daniel Hellstrom
2008-03-28 09:47:00 +01:00
parent aeff6d503b
commit c2f02da21a
36 changed files with 3510 additions and 1 deletions
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45
lib_sparc/Makefile Normal file
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#
# (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
#########################################################################

521
lib_sparc/board.c Normal file
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/* 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 (;;) ;
}
/************************************************************************/

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lib_sparc/bootm.c Normal file
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/* 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;
}

33
lib_sparc/cache.c Normal file
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/* 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();
}

122
lib_sparc/interrupts.c Normal file
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/*
* (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);
}

78
lib_sparc/time.c Normal file
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/*
* (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);
}
/* ------------------------------------------------------------------------- */