Merge branch 'sandbox' of git://git.denx.de/u-boot-blackfin
* 'sandbox' of git://git.denx.de/u-boot-blackfin:
sandbox: mark os_exit as noreturn
sandbox: add getopt support
sandbox: allow processing before main loop
sandbox: add concept of sandbox state
sandbox: disable fortification
sandbox: u-boot.lds: tweak style
sandbox: add get_{tbclk,ticks}
sandbox: enable GPIO driver
sandbox: gpio: add basic driver for simulating GPIOs
sandbox: add flags for open() call
sandbox: config: enable fdt and snprintf() options
sandbox: fdt: add support for CONFIG_OF_CONTROL
sandbox: add lseek helper
sandbox: add ifdef protection to os.h
sandbox: add required header to os.c
sandbox: sort header files in os.c
diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk
index 2ec1bb7..02ce4a4 100644
--- a/arch/sandbox/config.mk
+++ b/arch/sandbox/config.mk
@@ -17,5 +17,5 @@
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
-PLATFORM_CPPFLAGS += -DCONFIG_SANDBOX -D__SANDBOX__
+PLATFORM_CPPFLAGS += -DCONFIG_SANDBOX -D__SANDBOX__ -U_FORTIFY_SOURCE
PLATFORM_LIBS += -lrt
diff --git a/arch/sandbox/cpu/Makefile b/arch/sandbox/cpu/Makefile
index 2ae0f71..6fd09ff 100644
--- a/arch/sandbox/cpu/Makefile
+++ b/arch/sandbox/cpu/Makefile
@@ -27,7 +27,7 @@
LIB = $(obj)lib$(CPU).o
-COBJS := cpu.o start.o os.o
+COBJS := cpu.o os.o start.o state.o
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 6d55b5c..36637af 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -19,17 +19,22 @@
* MA 02111-1307 USA
*/
+#include <errno.h>
#include <fcntl.h>
+#include <getopt.h>
#include <stdlib.h>
#include <termios.h>
-#include <unistd.h>
#include <time.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.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 */
@@ -44,9 +49,42 @@
return write(fd, buf, count);
}
-int os_open(const char *pathname, int flags)
+off_t os_lseek(int fd, off_t offset, int whence)
{
- return open(pathname, flags);
+ 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)
@@ -121,3 +159,97 @@
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;
+}
diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c
index a429e29..6c3e8eb 100644
--- a/arch/sandbox/cpu/start.c
+++ b/arch/sandbox/cpu/start.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011 The Chromium OS Authors.
+ * Copyright (c) 2011-2012 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
*
@@ -20,9 +20,109 @@
*/
#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) {
+ /* TODO: redo this when cmd tidy-up series lands */
+#ifdef CONFIG_SYS_HUSH_PARSER
+ run_command(state->cmd, 0);
+#else
+ parse_string_outer(state->cmd, FLAG_PARSE_SEMICOLON |
+ FLAG_EXIT_FROM_LOOP);
+#endif
+ 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");
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.
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
index 2d2e50f..9960138 100644
--- a/arch/sandbox/cpu/u-boot.lds
+++ b/arch/sandbox/cpu/u-boot.lds
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011 The Chromium OS Authors.
+ * 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.
*
@@ -24,11 +24,15 @@
SECTIONS
{
- __u_boot_cmd_start = .;
- .u_boot_cmd : { *(.u_boot_cmd) }
- __u_boot_cmd_end = .;
- __bss_start = .;
+ __u_boot_cmd_start = .;
+ _u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+ __u_boot_sandbox_option_start = .;
+ _u_boot_sandbox_getopt : { *(.u_boot_sandbox_getopt) }
+ __u_boot_sandbox_option_end = .;
+ __bss_start = .;
}
INSERT BEFORE .data;
diff --git a/arch/sandbox/include/asm/getopt.h b/arch/sandbox/include/asm/getopt.h
new file mode 100644
index 0000000..685883c
--- /dev/null
+++ b/arch/sandbox/include/asm/getopt.h
@@ -0,0 +1,71 @@
+/*
+ * Code for setting up command line flags like `./u-boot --help`
+ *
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SANDBOX_GETOPT_H
+#define __SANDBOX_GETOPT_H
+
+struct sandbox_state;
+
+/*
+ * Internal structure for storing details about the flag.
+ * Most people should not have to dig around in this as
+ * it only gets parsed by the core sandbox code. End
+ * consumer code should focus on the macros below and
+ * the callback function.
+ */
+struct sb_cmdline_option {
+ /* The long flag name: "help" for "--help" */
+ const char *flag;
+ /* The (optional) short flag name: "h" for "-h" */
+ int flag_short;
+ /* The help string shown to the user when processing --help */
+ const char *help;
+ /* Whether this flag takes an argument */
+ int has_arg;
+ /* Callback into the end consumer code with the option */
+ int (*callback)(struct sandbox_state *state, const char *opt);
+};
+
+/*
+ * Internal macro to expand the lower macros into the necessary
+ * magic junk that makes this all work.
+ */
+#define _SB_CMDLINE_OPT(f, s, ha, h) \
+ static struct sb_cmdline_option sb_cmdline_option_##f = { \
+ .flag = #f, \
+ .flag_short = s, \
+ .help = h, \
+ .has_arg = ha, \
+ .callback = sb_cmdline_cb_##f, \
+ }; \
+ /* Ppointer to the struct in a special section for the linker script */ \
+ static __attribute__((section(".u_boot_sandbox_getopt"), used)) \
+ struct sb_cmdline_option *sb_cmdline_option_##f##_ptr = \
+ &sb_cmdline_option_##f
+
+/**
+ * Macros for end code to declare new command line flags.
+ *
+ * @param f The long flag name e.g. help
+ * @param ha Does the flag have an argument e.g. 0/1
+ * @param h The help string displayed when showing --help
+ *
+ * This invocation:
+ * SB_CMDLINE_OPT(foo, 0, "The foo arg");
+ * Will create a new flag named "--foo" (no short option) that takes
+ * no argument. If the user specifies "--foo", then the callback func
+ * sb_cmdline_cb_foo() will automatically be called.
+ */
+#define SB_CMDLINE_OPT(f, ha, h) _SB_CMDLINE_OPT(f, 0, ha, h)
+/*
+ * Same as above, but @s is used to specify a short flag e.g.
+ * SB_CMDLINE_OPT(foo, 'f', 0, "The foo arg");
+ */
+#define SB_CMDLINE_OPT_SHORT(f, s, ha, h) _SB_CMDLINE_OPT(f, s, ha, h)
+
+#endif
diff --git a/arch/sandbox/include/asm/global_data.h b/arch/sandbox/include/asm/global_data.h
index 8d47191..01a7063 100644
--- a/arch/sandbox/include/asm/global_data.h
+++ b/arch/sandbox/include/asm/global_data.h
@@ -45,6 +45,7 @@
unsigned long fb_base; /* base address of frame buffer */
u8 *ram_buf; /* emulated RAM buffer */
phys_size_t ram_size; /* RAM size */
+ const void *fdt_blob; /* Our device tree, NULL if none */
void **jt; /* jump table */
char env_buf[32]; /* buffer for getenv() before reloc. */
} gd_t;
diff --git a/arch/sandbox/include/asm/gpio.h b/arch/sandbox/include/asm/gpio.h
new file mode 100644
index 0000000..0500c53
--- /dev/null
+++ b/arch/sandbox/include/asm/gpio.h
@@ -0,0 +1,81 @@
+/*
+ * This is the interface to the sandbox GPIO driver for test code which
+ * wants to change the GPIO values reported to U-Boot.
+ *
+ * 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
+ */
+
+#ifndef __ASM_SANDBOX_GPIO_H
+#define __ASM_SANDBOX_GPIO_H
+
+/*
+ * We use the generic interface, and add a back-channel.
+ *
+ * The back-channel functions are declared in this file. They should not be used
+ * except in test code.
+ *
+ * Test code can, for example, call sandbox_gpio_set_value() to set the value of
+ * a simulated GPIO. From then on, normal code in U-Boot will see this new
+ * value when it calls gpio_get_value().
+ *
+ * NOTE: DO NOT use the functions in this file except in test code!
+ */
+#include <asm-generic/gpio.h>
+
+/**
+ * Return the simulated value of a GPIO (used only in sandbox test code)
+ *
+ * @param gp GPIO number
+ * @return -1 on error, 0 if GPIO is low, >0 if high
+ */
+int sandbox_gpio_get_value(unsigned gp);
+
+/**
+ * Set the simulated value of a GPIO (used only in sandbox test code)
+ *
+ * @param gp GPIO number
+ * @param value value to set (0 for low, non-zero for high)
+ * @return -1 on error, 0 if ok
+ */
+int sandbox_gpio_set_value(unsigned gp, int value);
+
+/**
+ * Return the simulated direction of a GPIO (used only in sandbox test code)
+ *
+ * @param gp GPIO number
+ * @return -1 on error, 0 if GPIO is input, >0 if output
+ */
+int sandbox_gpio_get_direction(unsigned gp);
+
+/**
+ * Set the simulated direction of a GPIO (used only in sandbox test code)
+ *
+ * @param gp GPIO number
+ * @param output 0 to set as input, 1 to set as output
+ * @return -1 on error, 0 if ok
+ */
+int sandbox_gpio_set_direction(unsigned gp, int output);
+
+/* Display information about each GPIO */
+void gpio_info(void);
+
+#define gpio_status() gpio_info()
+
+#endif
diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
new file mode 100644
index 0000000..eafce7d
--- /dev/null
+++ b/arch/sandbox/include/asm/sections.h
@@ -0,0 +1,22 @@
+/*
+ * decls for symbols defined in the linker script
+ *
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SANDBOX_SECTIONS_H
+#define __SANDBOX_SECTIONS_H
+
+struct sb_cmdline_option;
+
+extern struct sb_cmdline_option *__u_boot_sandbox_option_start[],
+ *__u_boot_sandbox_option_end[];
+
+static inline size_t __u_boot_sandbox_option_count(void)
+{
+ return __u_boot_sandbox_option_end - __u_boot_sandbox_option_start;
+}
+
+#endif
diff --git a/arch/sandbox/include/asm/state.h b/arch/sandbox/include/asm/state.h
new file mode 100644
index 0000000..2b62b46
--- /dev/null
+++ b/arch/sandbox/include/asm/state.h
@@ -0,0 +1,62 @@
+/*
+ * 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
+ */
+
+#ifndef __SANDBOX_STATE_H
+#define __SANDBOX_STATE_H
+
+#include <config.h>
+
+/* How we exited U-Boot */
+enum exit_type_id {
+ STATE_EXIT_NORMAL,
+ STATE_EXIT_COLD_REBOOT,
+ STATE_EXIT_POWER_OFF,
+};
+
+/* The complete state of the test system */
+struct sandbox_state {
+ const char *cmd; /* Command to execute */
+ enum exit_type_id exit_type; /* How we exited U-Boot */
+ const char *parse_err; /* Error to report from parsing */
+ int argc; /* Program arguments */
+ char **argv;
+};
+
+/**
+ * Record the exit type to be reported by the test program.
+ *
+ * @param exit_type Exit type to record
+ */
+void state_record_exit(enum exit_type_id exit_type);
+
+/**
+ * Gets a pointer to the current state.
+ *
+ * @return pointer to state
+ */
+struct sandbox_state *state_get_current(void);
+
+/**
+ * Initialize the test system state
+ */
+int state_init(void);
+
+#endif
diff --git a/arch/sandbox/include/asm/u-boot-sandbox.h b/arch/sandbox/include/asm/u-boot-sandbox.h
index 236b4ee..50bf8c6 100644
--- a/arch/sandbox/include/asm/u-boot-sandbox.h
+++ b/arch/sandbox/include/asm/u-boot-sandbox.h
@@ -35,4 +35,8 @@
int board_init(void);
int dram_init(void);
+/* start.c */
+int sandbox_early_getopt_check(void);
+int sandbox_main_loop_init(void);
+
#endif /* _U_BOOT_SANDBOX_H_ */
diff --git a/arch/sandbox/lib/board.c b/arch/sandbox/lib/board.c
index b7997e9..306d1ec 100644
--- a/arch/sandbox/lib/board.c
+++ b/arch/sandbox/lib/board.c
@@ -134,6 +134,7 @@
env_init, /* initialize environment */
serial_init, /* serial communications setup */
console_init_f, /* stage 1 init of console */
+ sandbox_early_getopt_check, /* process command line flags (err/help) */
display_banner, /* say that we are here */
#if defined(CONFIG_DISPLAY_CPUINFO)
print_cpuinfo, /* display cpu info (and speed) */
@@ -156,6 +157,14 @@
memset((void *)gd, 0, sizeof(gd_t));
+#if defined(CONFIG_OF_EMBED)
+ /* Get a pointer to the FDT */
+ gd->fdt_blob = _binary_dt_dtb_start;
+#elif defined(CONFIG_OF_SEPARATE)
+ /* FDT is at end of image */
+ gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
+#endif
+
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0)
hang();
@@ -261,6 +270,8 @@
post_run(NULL, POST_RAM | post_bootmode_get(0));
#endif
+ sandbox_main_loop_init();
+
/*
* For now, run the main loop. Later we might let this be done
* in the main program.
diff --git a/board/sandbox/sandbox/sandbox.c b/board/sandbox/sandbox/sandbox.c
index f376c74..9883013 100644
--- a/board/sandbox/sandbox/sandbox.c
+++ b/board/sandbox/sandbox/sandbox.c
@@ -34,6 +34,16 @@
{
}
+ulong get_tbclk(void)
+{
+ return CONFIG_SYS_HZ;
+}
+
+unsigned long long get_ticks(void)
+{
+ return get_timer(0);
+}
+
ulong get_timer(ulong base)
{
return (os_get_nsec() / 1000000) - base;
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 4375a55..fb3b09a 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -34,6 +34,7 @@
COBJS-$(CONFIG_PCA953X) += pca953x.o
COBJS-$(CONFIG_PCA9698) += pca9698.o
COBJS-$(CONFIG_S5P) += s5p_gpio.o
+COBJS-$(CONFIG_SANDBOX_GPIO) += sandbox.o
COBJS-$(CONFIG_TEGRA2_GPIO) += tegra2_gpio.o
COBJS-$(CONFIG_DA8XX_GPIO) += da8xx_gpio.o
COBJS-$(CONFIG_ALTERA_PIO) += altera_pio.o
diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c
new file mode 100644
index 0000000..19d2db0
--- /dev/null
+++ b/drivers/gpio/sandbox.c
@@ -0,0 +1,209 @@
+/*
+ * 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 <asm/gpio.h>
+
+/* Flags for each GPIO */
+#define GPIOF_OUTPUT (1 << 0) /* Currently set as an output */
+#define GPIOF_HIGH (1 << 1) /* Currently set high */
+#define GPIOF_RESERVED (1 << 2) /* Is in use / requested */
+
+struct gpio_state {
+ const char *label; /* label given by requester */
+ u8 flags; /* flags (GPIOF_...) */
+};
+
+/*
+ * State of GPIOs
+ * TODO: Put this into sandbox state
+ */
+static struct gpio_state state[CONFIG_SANDBOX_GPIO_COUNT];
+
+/* Access routines for GPIO state */
+static u8 *get_gpio_flags(unsigned gp)
+{
+ /* assert()'s could be disabled, so make sure we handle that */
+ assert(gp < ARRAY_SIZE(state));
+ if (gp >= ARRAY_SIZE(state)) {
+ static u8 invalid_flags;
+ printf("sandbox_gpio: error: invalid gpio %u\n", gp);
+ return &invalid_flags;
+ }
+
+ return &state[gp].flags;
+}
+
+static int get_gpio_flag(unsigned gp, int flag)
+{
+ return (*get_gpio_flags(gp) & flag) != 0;
+}
+
+static int set_gpio_flag(unsigned gp, int flag, int value)
+{
+ u8 *gpio = get_gpio_flags(gp);
+
+ if (value)
+ *gpio |= flag;
+ else
+ *gpio &= ~flag;
+
+ return 0;
+}
+
+static int check_reserved(unsigned gpio, const char *func)
+{
+ if (!get_gpio_flag(gpio, GPIOF_RESERVED)) {
+ printf("sandbox_gpio: %s: error: gpio %u not reserved\n",
+ func, gpio);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Back-channel sandbox-internal-only access to GPIO state
+ */
+
+int sandbox_gpio_get_value(unsigned gp)
+{
+ if (get_gpio_flag(gp, GPIOF_OUTPUT))
+ debug("sandbox_gpio: get_value on output gpio %u\n", gp);
+ return get_gpio_flag(gp, GPIOF_HIGH);
+}
+
+int sandbox_gpio_set_value(unsigned gp, int value)
+{
+ return set_gpio_flag(gp, GPIOF_HIGH, value);
+}
+
+int sandbox_gpio_get_direction(unsigned gp)
+{
+ return get_gpio_flag(gp, GPIOF_OUTPUT);
+}
+
+int sandbox_gpio_set_direction(unsigned gp, int output)
+{
+ return set_gpio_flag(gp, GPIOF_OUTPUT, output);
+}
+
+/*
+ * These functions implement the public interface within U-Boot
+ */
+
+/* set GPIO port 'gp' as an input */
+int gpio_direction_input(unsigned gp)
+{
+ debug("%s: gp:%u\n", __func__, gp);
+
+ if (check_reserved(gp, __func__))
+ return -1;
+
+ return sandbox_gpio_set_direction(gp, 0);
+}
+
+/* set GPIO port 'gp' as an output, with polarity 'value' */
+int gpio_direction_output(unsigned gp, int value)
+{
+ debug("%s: gp:%u, value = %d\n", __func__, gp, value);
+
+ if (check_reserved(gp, __func__))
+ return -1;
+
+ return sandbox_gpio_set_direction(gp, 1) |
+ sandbox_gpio_set_value(gp, value);
+}
+
+/* read GPIO IN value of port 'gp' */
+int gpio_get_value(unsigned gp)
+{
+ debug("%s: gp:%u\n", __func__, gp);
+
+ if (check_reserved(gp, __func__))
+ return -1;
+
+ return sandbox_gpio_get_value(gp);
+}
+
+/* write GPIO OUT value to port 'gp' */
+int gpio_set_value(unsigned gp, int value)
+{
+ debug("%s: gp:%u, value = %d\n", __func__, gp, value);
+
+ if (check_reserved(gp, __func__))
+ return -1;
+
+ if (!sandbox_gpio_get_direction(gp)) {
+ printf("sandbox_gpio: error: set_value on input gpio %u\n", gp);
+ return -1;
+ }
+
+ return sandbox_gpio_set_value(gp, value);
+}
+
+int gpio_request(unsigned gp, const char *label)
+{
+ debug("%s: gp:%u, label:%s\n", __func__, gp, label);
+
+ if (gp >= ARRAY_SIZE(state)) {
+ printf("sandbox_gpio: error: invalid gpio %u\n", gp);
+ return -1;
+ }
+
+ if (get_gpio_flag(gp, GPIOF_RESERVED)) {
+ printf("sandbox_gpio: error: gpio %u already reserved\n", gp);
+ return -1;
+ }
+
+ state[gp].label = label;
+ return set_gpio_flag(gp, GPIOF_RESERVED, 1);
+}
+
+int gpio_free(unsigned gp)
+{
+ debug("%s: gp:%u\n", __func__, gp);
+
+ if (check_reserved(gp, __func__))
+ return -1;
+
+ state[gp].label = NULL;
+ return set_gpio_flag(gp, GPIOF_RESERVED, 0);
+}
+
+/* Display GPIO information */
+void gpio_info(void)
+{
+ unsigned gpio;
+
+ puts("Sandbox GPIOs\n");
+
+ for (gpio = 0; gpio < ARRAY_SIZE(state); ++gpio) {
+ const char *label = state[gpio].label;
+
+ printf("%4d: %s: %d [%c] %s\n",
+ gpio,
+ sandbox_gpio_get_direction(gpio) ? "out" : " in",
+ sandbox_gpio_get_value(gpio),
+ get_gpio_flag(gpio, GPIOF_RESERVED) ? 'x' : ' ',
+ label ? label : "");
+ }
+}
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index 10565e6..a58a34e 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -28,6 +28,16 @@
/* Number of bits in a C 'long' on this architecture */
#define CONFIG_SANDBOX_BITS_PER_LONG 64
+#define CONFIG_OF_CONTROL
+#define CONFIG_OF_LIBFDT
+#define CONFIG_LMB
+
+#define CONFIG_SYS_VSNPRINTF
+
+#define CONFIG_CMD_GPIO
+#define CONFIG_SANDBOX_GPIO
+#define CONFIG_SANDBOX_GPIO_COUNT 20
+
/*
* Size of malloc() pool, although we don't actually use this yet.
*/
diff --git a/include/os.h b/include/os.h
index f3af4f0..699682a 100644
--- a/include/os.h
+++ b/include/os.h
@@ -1,4 +1,9 @@
/*
+ * Operating System Interface
+ *
+ * This provides access to useful OS routines for the sandbox architecture.
+ * They are kept in a separate file so we can include system headers.
+ *
* Copyright (c) 2011 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
@@ -19,11 +24,10 @@
* MA 02111-1307 USA
*/
-/*
- * Operating System Interface
- *
- * This provides access to useful OS routines from the sandbox architecture
- */
+#ifndef __OS_H__
+#define __OS_H__
+
+struct sandbox_state;
/**
* Access to the OS read() system call
@@ -46,6 +50,21 @@
ssize_t os_write(int fd, const void *buf, size_t count);
/**
+ * Access to the OS lseek() system call
+ *
+ * \param fd File descriptor as returned by os_open()
+ * \param offset File offset (based on whence)
+ * \param whence Position offset is relative to (see below)
+ * \return new file offset
+ */
+off_t os_lseek(int fd, off_t offset, int whence);
+
+/* Defines for "whence" in os_lseek() */
+#define OS_SEEK_SET 0
+#define OS_SEEK_CUR 1
+#define OS_SEEK_END 2
+
+/**
* Access to the OS open() system call
*
* \param pathname Pathname of file to open
@@ -54,6 +73,12 @@
*/
int os_open(const char *pathname, int flags);
+#define OS_O_RDONLY 0
+#define OS_O_WRONLY 1
+#define OS_O_RDWR 2
+#define OS_O_MASK 3 /* Mask for read/write flags */
+#define OS_O_CREAT 0100
+
/**
* Access to the OS close() system call
*
@@ -70,7 +95,7 @@
*
* @param exit_code exit code for U-Boot
*/
-void os_exit(int exit_code);
+void os_exit(int exit_code) __attribute__((noreturn));
/**
* Put tty into raw mode to mimic serial console better
@@ -98,3 +123,17 @@
* \return A monotonic increasing time scaled in nano seconds
*/
u64 os_get_nsec(void);
+
+/**
+ * Parse arguments and update sandbox state.
+ *
+ * @param state Sandbox state to update
+ * @param argc Argument count
+ * @param argv Argument vector
+ * @return 0 if ok, and program should continue;
+ * 1 if ok, but program should stop;
+ * -1 on error: program should terminate.
+ */
+int os_parse_args(struct sandbox_state *state, int argc, char *argv[]);
+
+#endif