diff options
Diffstat (limited to 'arch/sandbox/cpu')
| -rw-r--r-- | arch/sandbox/cpu/Makefile | 51 | ||||
| -rw-r--r-- | arch/sandbox/cpu/cpu.c | 67 | ||||
| -rw-r--r-- | arch/sandbox/cpu/os.c | 364 | ||||
| -rw-r--r-- | arch/sandbox/cpu/start.c | 135 | ||||
| -rw-r--r-- | arch/sandbox/cpu/state.c | 51 | ||||
| -rw-r--r-- | arch/sandbox/cpu/u-boot.lds | 40 |
6 files changed, 708 insertions, 0 deletions
diff --git a/arch/sandbox/cpu/Makefile b/arch/sandbox/cpu/Makefile new file mode 100644 index 0000000..6fd09ff --- /dev/null +++ b/arch/sandbox/cpu/Makefile @@ -0,0 +1,51 @@ +# +# Copyright (c) 2011 The Chromium OS Authors. +# +# (C) Copyright 2000-2003 +# 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 = $(obj)lib$(CPU).o + +COBJS := cpu.o os.o start.o state.o + +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(obj).depend $(LIB) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +# os.c is build in the system environment, so needs standard includes +$(obj)os.o: ALL_CFLAGS := $(filter-out -nostdinc,$(ALL_CFLAGS)) +$(obj).depend.os: CPPFLAGS := $(filter-out -nostdinc,$(CPPFLAGS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c new file mode 100644 index 0000000..e9385de --- /dev/null +++ b/arch/sandbox/cpu/cpu.c @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * 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 <os.h> + +DECLARE_GLOBAL_DATA_PTR; + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + /* This is considered normal termination for now */ + os_exit(0); + return 0; +} + +/* delay x useconds */ +void __udelay(unsigned long usec) +{ + os_usleep(usec); +} + +unsigned long __attribute__((no_instrument_function)) timer_get_us(void) +{ + return os_get_nsec() / 1000; +} + +int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) +{ + return -1; +} + +int cleanup_before_linux(void) +{ + return 0; +} + +void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) +{ + return (void *)(gd->arch.ram_buf + paddr); +} + +phys_addr_t map_to_sysmem(void *ptr) +{ + return (u8 *)ptr - gd->arch.ram_buf; +} + +void flush_dcache_range(unsigned long start, unsigned long stop) +{ +} diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c new file mode 100644 index 0000000..541e450 --- /dev/null +++ b/arch/sandbox/cpu/os.c @@ -0,0 +1,364 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * 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 <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <termios.h> +#include <time.h> +#include <unistd.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <linux/types.h> + +#include <asm/getopt.h> +#include <asm/sections.h> +#include <asm/state.h> +#include <os.h> + +/* Operating System Interface */ + +ssize_t os_read(int fd, void *buf, size_t count) +{ + return read(fd, buf, count); +} + +ssize_t os_read_no_block(int fd, void *buf, size_t count) +{ + const int flags = fcntl(fd, F_GETFL, 0); + + fcntl(fd, F_SETFL, flags | O_NONBLOCK); + return os_read(fd, buf, count); +} + +ssize_t os_write(int fd, const void *buf, size_t count) +{ + return write(fd, buf, count); +} + +off_t os_lseek(int fd, off_t offset, int whence) +{ + if (whence == OS_SEEK_SET) + whence = SEEK_SET; + else if (whence == OS_SEEK_CUR) + whence = SEEK_CUR; + else if (whence == OS_SEEK_END) + whence = SEEK_END; + else + os_exit(1); + return lseek(fd, offset, whence); +} + +int os_open(const char *pathname, int os_flags) +{ + int flags; + + switch (os_flags & OS_O_MASK) { + case OS_O_RDONLY: + default: + flags = O_RDONLY; + break; + + case OS_O_WRONLY: + flags = O_WRONLY; + break; + + case OS_O_RDWR: + flags = O_RDWR; + break; + } + + if (os_flags & OS_O_CREAT) + flags |= O_CREAT; + + return open(pathname, flags, 0777); +} + +int os_close(int fd) +{ + return close(fd); +} + +void os_exit(int exit_code) +{ + exit(exit_code); +} + +/* Restore tty state when we exit */ +static struct termios orig_term; + +static void os_fd_restore(void) +{ + tcsetattr(0, TCSANOW, &orig_term); +} + +/* Put tty into raw mode so <tab> and <ctrl+c> work */ +void os_tty_raw(int fd) +{ + static int setup = 0; + struct termios term; + + if (setup) + return; + setup = 1; + + /* If not a tty, don't complain */ + if (tcgetattr(fd, &orig_term)) + return; + + term = orig_term; + term.c_iflag = IGNBRK | IGNPAR; + term.c_oflag = OPOST | ONLCR; + term.c_cflag = CS8 | CREAD | CLOCAL; + term.c_lflag = 0; + if (tcsetattr(fd, TCSANOW, &term)) + return; + + atexit(os_fd_restore); +} + +void *os_malloc(size_t length) +{ + return mmap(NULL, length, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); +} + +void os_usleep(unsigned long usec) +{ + usleep(usec); +} + +u64 __attribute__((no_instrument_function)) os_get_nsec(void) +{ +#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK) + struct timespec tp; + if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) { + struct timeval tv; + + gettimeofday(&tv, NULL); + tp.tv_sec = tv.tv_sec; + tp.tv_nsec = tv.tv_usec * 1000; + } + return tp.tv_sec * 1000000000ULL + tp.tv_nsec; +#else + struct timeval tv; + gettimeofday(&tv, NULL); + return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000; +#endif +} + +static char *short_opts; +static struct option *long_opts; + +int os_parse_args(struct sandbox_state *state, int argc, char *argv[]) +{ + struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start; + size_t num_options = __u_boot_sandbox_option_count(); + size_t i; + + int hidden_short_opt; + size_t si; + + int c; + + if (short_opts || long_opts) + return 1; + + state->argc = argc; + state->argv = argv; + + /* dynamically construct the arguments to the system getopt_long */ + short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1); + long_opts = os_malloc(sizeof(*long_opts) * num_options); + if (!short_opts || !long_opts) + return 1; + + /* + * getopt_long requires "val" to be unique (since that is what the + * func returns), so generate unique values automatically for flags + * that don't have a short option. pick 0x100 as that is above the + * single byte range (where ASCII/ISO-XXXX-X charsets live). + */ + hidden_short_opt = 0x100; + si = 0; + for (i = 0; i < num_options; ++i) { + long_opts[i].name = sb_opt[i]->flag; + long_opts[i].has_arg = sb_opt[i]->has_arg ? + required_argument : no_argument; + long_opts[i].flag = NULL; + + if (sb_opt[i]->flag_short) { + short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short; + if (long_opts[i].has_arg == required_argument) + short_opts[si++] = ':'; + } else + long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++; + } + short_opts[si] = '\0'; + + /* we need to handle output ourselves since u-boot provides printf */ + opterr = 0; + + /* + * walk all of the options the user gave us on the command line, + * figure out what u-boot option structure they belong to (via + * the unique short val key), and call the appropriate callback. + */ + while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) { + for (i = 0; i < num_options; ++i) { + if (sb_opt[i]->flag_short == c) { + if (sb_opt[i]->callback(state, optarg)) { + state->parse_err = sb_opt[i]->flag; + return 0; + } + break; + } + } + if (i == num_options) { + /* + * store the faulting flag for later display. we have to + * store the flag itself as the getopt parsing itself is + * tricky: need to handle the following flags (assume all + * of the below are unknown): + * -a optopt='a' optind=<next> + * -abbbb optopt='a' optind=<this> + * -aaaaa optopt='a' optind=<this> + * --a optopt=0 optind=<this> + * as you can see, it is impossible to determine the exact + * faulting flag without doing the parsing ourselves, so + * we just report the specific flag that failed. + */ + if (optopt) { + static char parse_err[3] = { '-', 0, '\0', }; + parse_err[1] = optopt; + state->parse_err = parse_err; + } else + state->parse_err = argv[optind - 1]; + break; + } + } + + return 0; +} + +void os_dirent_free(struct os_dirent_node *node) +{ + struct os_dirent_node *next; + + while (node) { + next = node->next; + free(node); + node = next; + } +} + +int os_dirent_ls(const char *dirname, struct os_dirent_node **headp) +{ + struct dirent entry, *result; + struct os_dirent_node *head, *node, *next; + struct stat buf; + DIR *dir; + int ret; + char *fname; + int len; + + *headp = NULL; + dir = opendir(dirname); + if (!dir) + return -1; + + /* Create a buffer for the maximum filename length */ + len = sizeof(entry.d_name) + strlen(dirname) + 2; + fname = malloc(len); + if (!fname) { + ret = -ENOMEM; + goto done; + } + + for (node = head = NULL;; node = next) { + ret = readdir_r(dir, &entry, &result); + if (ret || !result) + break; + next = malloc(sizeof(*node) + strlen(entry.d_name) + 1); + if (!next) { + os_dirent_free(head); + ret = -ENOMEM; + goto done; + } + strcpy(next->name, entry.d_name); + switch (entry.d_type) { + case DT_REG: + next->type = OS_FILET_REG; + break; + case DT_DIR: + next->type = OS_FILET_DIR; + break; + case DT_LNK: + next->type = OS_FILET_LNK; + break; + } + next->size = 0; + snprintf(fname, len, "%s/%s", dirname, next->name); + if (!stat(fname, &buf)) + next->size = buf.st_size; + if (node) + node->next = next; + if (!head) + head = node; + } + *headp = head; + +done: + closedir(dir); + return ret; +} + +const char *os_dirent_typename[OS_FILET_COUNT] = { + " ", + "SYM", + "DIR", + "???", +}; + +const char *os_dirent_get_typename(enum os_dirent_t type) +{ + if (type >= 0 && type < OS_FILET_COUNT) + return os_dirent_typename[type]; + + return os_dirent_typename[OS_FILET_UNKNOWN]; +} + +ssize_t os_get_filesize(const char *fname) +{ + struct stat buf; + int ret; + + ret = stat(fname, &buf); + if (ret) + return ret; + return buf.st_size; +} diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c new file mode 100644 index 0000000..ae6e16c --- /dev/null +++ b/arch/sandbox/cpu/start.c @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2011-2012 The Chromium OS Authors. + * 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/getopt.h> +#include <asm/sections.h> +#include <asm/state.h> + +#include <os.h> + +int sandbox_early_getopt_check(void) +{ + struct sandbox_state *state = state_get_current(); + struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start; + size_t num_options = __u_boot_sandbox_option_count(); + size_t i; + int max_arg_len, max_noarg_len; + + /* parse_err will be a string of the faulting option */ + if (!state->parse_err) + return 0; + + if (strcmp(state->parse_err, "help")) { + printf("u-boot: error: failed while parsing option: %s\n" + "\ttry running with --help for more information.\n", + state->parse_err); + os_exit(1); + } + + printf( + "u-boot, a command line test interface to U-Boot\n\n" + "Usage: u-boot [options]\n" + "Options:\n"); + + max_arg_len = 0; + for (i = 0; i < num_options; ++i) + max_arg_len = max(strlen(sb_opt[i]->flag), max_arg_len); + max_noarg_len = max_arg_len + 7; + + for (i = 0; i < num_options; ++i) { + struct sb_cmdline_option *opt = sb_opt[i]; + + /* first output the short flag if it has one */ + if (opt->flag_short >= 0x100) + printf(" "); + else + printf(" -%c, ", opt->flag_short); + + /* then the long flag */ + if (opt->has_arg) + printf("--%-*s", max_noarg_len, opt->flag); + else + printf("--%-*s <arg> ", max_arg_len, opt->flag); + + /* finally the help text */ + printf(" %s\n", opt->help); + } + + os_exit(0); +} + +static int sb_cmdline_cb_help(struct sandbox_state *state, const char *arg) +{ + /* just flag to sandbox_early_getopt_check to show usage */ + return 1; +} +SB_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help"); + +int sandbox_main_loop_init(void) +{ + struct sandbox_state *state = state_get_current(); + + /* Execute command if required */ + if (state->cmd) { + run_command_list(state->cmd, -1, 0); + os_exit(state->exit_type); + } + + return 0; +} + +static int sb_cmdline_cb_command(struct sandbox_state *state, const char *arg) +{ + state->cmd = arg; + return 0; +} +SB_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command"); + +static int sb_cmdline_cb_fdt(struct sandbox_state *state, const char *arg) +{ + state->fdt_fname = arg; + return 0; +} +SB_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT"); + +int main(int argc, char *argv[]) +{ + struct sandbox_state *state; + int err; + + err = state_init(); + if (err) + return err; + + state = state_get_current(); + if (os_parse_args(state, argc, argv)) + return 1; + + /* + * Do pre- and post-relocation init, then start up U-Boot. This will + * never return. + */ + board_init_f(0); + + /* NOTREACHED - board_init_f() does not return */ + return 0; +} diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c new file mode 100644 index 0000000..88ae2b0 --- /dev/null +++ b/arch/sandbox/cpu/state.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2011-2012 The Chromium OS Authors. + * 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/state.h> + +/* Main state record for the sandbox */ +static struct sandbox_state main_state; +static struct sandbox_state *state; /* Pointer to current state record */ + +void state_record_exit(enum exit_type_id exit_type) +{ + state->exit_type = exit_type; +} + +struct sandbox_state *state_get_current(void) +{ + assert(state); + return state; +} + +int state_init(void) +{ + state = &main_state; + + /* + * Example of how to use GPIOs: + * + * sandbox_gpio_set_direction(170, 0); + * sandbox_gpio_set_value(170, 0); + */ + return 0; +} diff --git a/arch/sandbox/cpu/u-boot.lds b/arch/sandbox/cpu/u-boot.lds new file mode 100644 index 0000000..94c26f1 --- /dev/null +++ b/arch/sandbox/cpu/u-boot.lds @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2011-2012 The Chromium OS Authors. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * 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 + */ + +SECTIONS +{ + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } + + __u_boot_sandbox_option_start = .; + _u_boot_sandbox_getopt : { *(.u_boot_sandbox_getopt) } + __u_boot_sandbox_option_end = .; + + __bss_start = .; +} + +INSERT BEFORE .data; |
