* '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
master
Wolfgang Denk
13 years ago
commit
6ae38b8c58
@ -0,0 +1,51 @@ |
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/*
|
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* Copyright (c) 2011-2012 The Chromium OS Authors. |
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* See file CREDITS for list of people who contributed to this |
||||
* project. |
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* |
||||
* 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, |
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* MA 02111-1307 USA |
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*/ |
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|
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#include <common.h> |
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#include <asm/state.h> |
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|
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/* Main state record for the sandbox */ |
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static struct sandbox_state main_state; |
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static struct sandbox_state *state; /* Pointer to current state record */ |
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|
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void state_record_exit(enum exit_type_id exit_type) |
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{ |
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state->exit_type = exit_type; |
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} |
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|
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struct sandbox_state *state_get_current(void) |
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{ |
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assert(state); |
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return state; |
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} |
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|
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int state_init(void) |
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{ |
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state = &main_state; |
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|
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/*
|
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* Example of how to use GPIOs: |
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* |
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* sandbox_gpio_set_direction(170, 0); |
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* sandbox_gpio_set_value(170, 0); |
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*/ |
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return 0; |
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} |
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@ -0,0 +1,71 @@ |
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/*
|
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* Code for setting up command line flags like `./u-boot --help` |
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* |
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* Copyright (c) 2011 The Chromium OS Authors. |
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* |
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* Licensed under the GPL-2 or later. |
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*/ |
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|
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#ifndef __SANDBOX_GETOPT_H |
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#define __SANDBOX_GETOPT_H |
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|
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struct sandbox_state; |
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|
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/*
|
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* Internal structure for storing details about the flag. |
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* Most people should not have to dig around in this as |
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* it only gets parsed by the core sandbox code. End |
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* consumer code should focus on the macros below and |
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* the callback function. |
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*/ |
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struct sb_cmdline_option { |
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/* The long flag name: "help" for "--help" */ |
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const char *flag; |
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/* The (optional) short flag name: "h" for "-h" */ |
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int flag_short; |
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/* The help string shown to the user when processing --help */ |
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const char *help; |
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/* Whether this flag takes an argument */ |
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int has_arg; |
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/* Callback into the end consumer code with the option */ |
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int (*callback)(struct sandbox_state *state, const char *opt); |
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}; |
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|
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/*
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* Internal macro to expand the lower macros into the necessary |
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* magic junk that makes this all work. |
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*/ |
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#define _SB_CMDLINE_OPT(f, s, ha, h) \ |
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static struct sb_cmdline_option sb_cmdline_option_##f = { \
|
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.flag = #f, \
|
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.flag_short = s, \
|
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.help = h, \
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.has_arg = ha, \
|
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.callback = sb_cmdline_cb_##f, \
|
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}; \
|
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/* Ppointer to the struct in a special section for the linker script */ \
|
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static __attribute__((section(".u_boot_sandbox_getopt"), used)) \
|
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struct sb_cmdline_option *sb_cmdline_option_##f##_ptr = \
|
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&sb_cmdline_option_##f |
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|
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/**
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* Macros for end code to declare new command line flags. |
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* |
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* @param f The long flag name e.g. help |
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* @param ha Does the flag have an argument e.g. 0/1 |
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* @param h The help string displayed when showing --help |
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* |
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* This invocation: |
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* SB_CMDLINE_OPT(foo, 0, "The foo arg"); |
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* Will create a new flag named "--foo" (no short option) that takes |
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* no argument. If the user specifies "--foo", then the callback func |
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* sb_cmdline_cb_foo() will automatically be called. |
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*/ |
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#define SB_CMDLINE_OPT(f, ha, h) _SB_CMDLINE_OPT(f, 0, ha, h) |
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/*
|
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* Same as above, but @s is used to specify a short flag e.g. |
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* SB_CMDLINE_OPT(foo, 'f', 0, "The foo arg"); |
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*/ |
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#define SB_CMDLINE_OPT_SHORT(f, s, ha, h) _SB_CMDLINE_OPT(f, s, ha, h) |
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|
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#endif |
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@ -0,0 +1,81 @@ |
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/*
|
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* This is the interface to the sandbox GPIO driver for test code which |
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* wants to change the GPIO values reported to U-Boot. |
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* |
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* Copyright (c) 2011 The Chromium OS Authors. |
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* See file CREDITS for list of people who contributed to this |
||||
* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
||||
* published by the Free Software Foundation; either version 2 of |
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* 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, |
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* MA 02111-1307 USA |
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*/ |
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|
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#ifndef __ASM_SANDBOX_GPIO_H |
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#define __ASM_SANDBOX_GPIO_H |
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|
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/*
|
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* We use the generic interface, and add a back-channel. |
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* |
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* The back-channel functions are declared in this file. They should not be used |
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* except in test code. |
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* |
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* Test code can, for example, call sandbox_gpio_set_value() to set the value of |
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* a simulated GPIO. From then on, normal code in U-Boot will see this new |
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* value when it calls gpio_get_value(). |
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* |
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* NOTE: DO NOT use the functions in this file except in test code! |
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*/ |
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#include <asm-generic/gpio.h> |
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|
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/**
|
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* Return the simulated value of a GPIO (used only in sandbox test code) |
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* |
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* @param gp GPIO number |
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* @return -1 on error, 0 if GPIO is low, >0 if high |
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*/ |
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int sandbox_gpio_get_value(unsigned gp); |
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|
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/**
|
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* Set the simulated value of a GPIO (used only in sandbox test code) |
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* |
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* @param gp GPIO number |
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* @param value value to set (0 for low, non-zero for high) |
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* @return -1 on error, 0 if ok |
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*/ |
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int sandbox_gpio_set_value(unsigned gp, int value); |
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|
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/**
|
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* Return the simulated direction of a GPIO (used only in sandbox test code) |
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* |
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* @param gp GPIO number |
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* @return -1 on error, 0 if GPIO is input, >0 if output |
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*/ |
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int sandbox_gpio_get_direction(unsigned gp); |
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|
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/**
|
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* Set the simulated direction of a GPIO (used only in sandbox test code) |
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* |
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* @param gp GPIO number |
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* @param output 0 to set as input, 1 to set as output |
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* @return -1 on error, 0 if ok |
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*/ |
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int sandbox_gpio_set_direction(unsigned gp, int output); |
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|
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/* Display information about each GPIO */ |
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void gpio_info(void); |
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|
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#define gpio_status() gpio_info() |
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|
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#endif |
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@ -0,0 +1,22 @@ |
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/*
|
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* decls for symbols defined in the linker script |
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* |
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* Copyright (c) 2012 The Chromium OS Authors. |
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* |
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* Licensed under the GPL-2 or later. |
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*/ |
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|
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#ifndef __SANDBOX_SECTIONS_H |
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#define __SANDBOX_SECTIONS_H |
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|
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struct sb_cmdline_option; |
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|
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extern struct sb_cmdline_option *__u_boot_sandbox_option_start[], |
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*__u_boot_sandbox_option_end[]; |
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|
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static inline size_t __u_boot_sandbox_option_count(void) |
||||
{ |
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return __u_boot_sandbox_option_end - __u_boot_sandbox_option_start; |
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} |
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|
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#endif |
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@ -0,0 +1,62 @@ |
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/*
|
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* Copyright (c) 2011-2012 The Chromium OS Authors. |
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* See file CREDITS for list of people who contributed to this |
||||
* project. |
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* |
||||
* 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 |
||||
*/ |
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|
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#ifndef __SANDBOX_STATE_H |
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#define __SANDBOX_STATE_H |
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|
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#include <config.h> |
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|
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/* How we exited U-Boot */ |
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enum exit_type_id { |
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STATE_EXIT_NORMAL, |
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STATE_EXIT_COLD_REBOOT, |
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STATE_EXIT_POWER_OFF, |
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}; |
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|
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/* The complete state of the test system */ |
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struct sandbox_state { |
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const char *cmd; /* Command to execute */ |
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enum exit_type_id exit_type; /* How we exited U-Boot */ |
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const char *parse_err; /* Error to report from parsing */ |
||||
int argc; /* Program arguments */ |
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char **argv; |
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}; |
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|
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/**
|
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* Record the exit type to be reported by the test program. |
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* |
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* @param exit_type Exit type to record |
||||
*/ |
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void state_record_exit(enum exit_type_id exit_type); |
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|
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/**
|
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* Gets a pointer to the current state. |
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* |
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* @return pointer to state |
||||
*/ |
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struct sandbox_state *state_get_current(void); |
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|
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/**
|
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* Initialize the test system state |
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*/ |
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int state_init(void); |
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|
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#endif |
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@ -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 : ""); |
||||
} |
||||
} |
||||
Loading…
Reference in new issue