diff options
Diffstat (limited to 'lib_sparc')
| -rw-r--r-- | lib_sparc/Makefile | 45 | ||||
| -rw-r--r-- | lib_sparc/board.c | 521 | ||||
| -rw-r--r-- | lib_sparc/bootm.c | 226 | ||||
| -rw-r--r-- | lib_sparc/cache.c | 33 | ||||
| -rw-r--r-- | lib_sparc/interrupts.c | 122 | ||||
| -rw-r--r-- | lib_sparc/time.c | 78 |
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); +} + +/* ------------------------------------------------------------------------- */ |