summaryrefslogtreecommitdiffstats
path: root/qemu/roms/u-boot/common/hwconfig.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/roms/u-boot/common/hwconfig.c')
-rw-r--r--qemu/roms/u-boot/common/hwconfig.c285
1 files changed, 0 insertions, 285 deletions
diff --git a/qemu/roms/u-boot/common/hwconfig.c b/qemu/roms/u-boot/common/hwconfig.c
deleted file mode 100644
index 4ae042ee3..000000000
--- a/qemu/roms/u-boot/common/hwconfig.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * An inteface for configuring a hardware via u-boot environment.
- *
- * Copyright (c) 2009 MontaVista Software, Inc.
- * Copyright 2011 Freescale Semiconductor, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef HWCONFIG_TEST
-#include <config.h>
-#include <common.h>
-#include <exports.h>
-#include <hwconfig.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#define min(a, b) (((a) < (b)) ? (a) : (b))
-#endif /* HWCONFIG_TEST */
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static const char *hwconfig_parse(const char *opts, size_t maxlen,
- const char *opt, char *stopchs, char eqch,
- size_t *arglen)
-{
- size_t optlen = strlen(opt);
- char *str;
- const char *start = opts;
- const char *end;
-
-next:
- str = strstr(opts, opt);
- end = str + optlen;
- if (end - start > maxlen)
- return NULL;
-
- if (str && (str == opts || strpbrk(str - 1, stopchs) == str - 1) &&
- (strpbrk(end, stopchs) == end || *end == eqch ||
- *end == '\0')) {
- const char *arg_end;
-
- if (!arglen)
- return str;
-
- if (*end != eqch)
- return NULL;
-
- arg_end = strpbrk(str, stopchs);
- if (!arg_end)
- *arglen = min(maxlen, strlen(str)) - optlen - 1;
- else
- *arglen = arg_end - end - 1;
-
- return end + 1;
- } else if (str) {
- opts = end;
- goto next;
- }
- return NULL;
-}
-
-const char cpu_hwconfig[] __attribute__((weak)) = "";
-const char board_hwconfig[] __attribute__((weak)) = "";
-
-static const char *__hwconfig(const char *opt, size_t *arglen,
- const char *env_hwconfig)
-{
- const char *ret;
-
- /* if we are passed a buffer use it, otherwise try the environment */
- if (!env_hwconfig) {
- if (!(gd->flags & GD_FLG_ENV_READY)) {
- printf("WARNING: Calling __hwconfig without a buffer "
- "and before environment is ready\n");
- return NULL;
- }
- env_hwconfig = getenv("hwconfig");
- }
-
- if (env_hwconfig) {
- ret = hwconfig_parse(env_hwconfig, strlen(env_hwconfig),
- opt, ";", ':', arglen);
- if (ret)
- return ret;
- }
-
- ret = hwconfig_parse(board_hwconfig, strlen(board_hwconfig),
- opt, ";", ':', arglen);
- if (ret)
- return ret;
-
- return hwconfig_parse(cpu_hwconfig, strlen(cpu_hwconfig),
- opt, ";", ':', arglen);
-}
-
-/*
- * hwconfig_f - query if a particular hwconfig option is specified
- * @opt: a string representing an option
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * This call can be used to find out whether U-Boot should configure
- * a particular hardware option.
- *
- * Returns non-zero value if the hardware option can be used and thus
- * should be configured, 0 otherwise.
- *
- * This function also returns non-zero value if CONFIG_HWCONFIG is
- * undefined.
- *
- * Returning non-zero value without CONFIG_HWCONFIG has its crucial
- * purpose: the hwconfig() call should be a "transparent" interface,
- * e.g. if a board doesn't need hwconfig facility, then we assume
- * that the board file only calls things that are actually used, so
- * hwconfig() will always return true result.
- */
-int hwconfig_f(const char *opt, char *buf)
-{
- return !!__hwconfig(opt, NULL, buf);
-}
-
-/*
- * hwconfig_arg_f - get hwconfig option's argument
- * @opt: a string representing an option
- * @arglen: a pointer to an allocated size_t variable
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * Unlike hwconfig_f() function, this function returns a pointer to the
- * start of the hwconfig arguments, if option is not found or it has
- * no specified arguments, the function returns NULL pointer.
- *
- * If CONFIG_HWCONFIG is undefined, the function returns "", and
- * arglen is set to 0.
- */
-const char *hwconfig_arg_f(const char *opt, size_t *arglen, char *buf)
-{
- return __hwconfig(opt, arglen, buf);
-}
-
-/*
- * hwconfig_arg_cmp_f - compare hwconfig option's argument
- * @opt: a string representing an option
- * @arg: a string for comparing an option's argument
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * This call is similar to hwconfig_arg_f, but instead of returning
- * hwconfig argument and its length, it is comparing it to @arg.
- *
- * Returns non-zero value if @arg matches, 0 otherwise.
- *
- * If CONFIG_HWCONFIG is undefined, the function returns a non-zero
- * value, i.e. the argument matches.
- */
-int hwconfig_arg_cmp_f(const char *opt, const char *arg, char *buf)
-{
- const char *argstr;
- size_t arglen;
-
- argstr = hwconfig_arg_f(opt, &arglen, buf);
- if (!argstr || arglen != strlen(arg))
- return 0;
-
- return !strncmp(argstr, arg, arglen);
-}
-
-/*
- * hwconfig_sub_f - query if a particular hwconfig sub-option is specified
- * @opt: a string representing an option
- * @subopt: a string representing a sub-option
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * This call is similar to hwconfig_f(), except that it takes additional
- * argument @subopt. In this example:
- * "dr_usb:mode=peripheral"
- * "dr_usb" is an option, "mode" is a sub-option, and "peripheral" is its
- * argument.
- */
-int hwconfig_sub_f(const char *opt, const char *subopt, char *buf)
-{
- size_t arglen;
- const char *arg;
-
- arg = __hwconfig(opt, &arglen, buf);
- if (!arg)
- return 0;
- return !!hwconfig_parse(arg, arglen, subopt, ",;", '=', NULL);
-}
-
-/*
- * hwconfig_subarg_f - get hwconfig sub-option's argument
- * @opt: a string representing an option
- * @subopt: a string representing a sub-option
- * @subarglen: a pointer to an allocated size_t variable
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * This call is similar to hwconfig_arg_f(), except that it takes an
- * additional argument @subopt, and so works with sub-options.
- */
-const char *hwconfig_subarg_f(const char *opt, const char *subopt,
- size_t *subarglen, char *buf)
-{
- size_t arglen;
- const char *arg;
-
- arg = __hwconfig(opt, &arglen, buf);
- if (!arg)
- return NULL;
- return hwconfig_parse(arg, arglen, subopt, ",;", '=', subarglen);
-}
-
-/*
- * hwconfig_arg_cmp_f - compare hwconfig sub-option's argument
- * @opt: a string representing an option
- * @subopt: a string representing a sub-option
- * @subarg: a string for comparing an sub-option's argument
- * @buf: if non-NULL use this buffer to parse, otherwise try env
- *
- * This call is similar to hwconfig_arg_cmp_f, except that it takes an
- * additional argument @subopt, and so works with sub-options.
- */
-int hwconfig_subarg_cmp_f(const char *opt, const char *subopt,
- const char *subarg, char *buf)
-{
- const char *argstr;
- size_t arglen;
-
- argstr = hwconfig_subarg_f(opt, subopt, &arglen, buf);
- if (!argstr || arglen != strlen(subarg))
- return 0;
-
- return !strncmp(argstr, subarg, arglen);
-}
-
-#ifdef HWCONFIG_TEST
-int main()
-{
- const char *ret;
- size_t len;
-
- setenv("hwconfig", "key1:subkey1=value1,subkey2=value2;key2:value3;;;;"
- "key3;:,:=;key4", 1);
-
- ret = hwconfig_arg("key1", &len);
- printf("%zd %.*s\n", len, (int)len, ret);
- assert(len == 29);
- assert(hwconfig_arg_cmp("key1", "subkey1=value1,subkey2=value2"));
- assert(!strncmp(ret, "subkey1=value1,subkey2=value2", len));
-
- ret = hwconfig_subarg("key1", "subkey1", &len);
- printf("%zd %.*s\n", len, (int)len, ret);
- assert(len == 6);
- assert(hwconfig_subarg_cmp("key1", "subkey1", "value1"));
- assert(!strncmp(ret, "value1", len));
-
- ret = hwconfig_subarg("key1", "subkey2", &len);
- printf("%zd %.*s\n", len, (int)len, ret);
- assert(len == 6);
- assert(hwconfig_subarg_cmp("key1", "subkey2", "value2"));
- assert(!strncmp(ret, "value2", len));
-
- ret = hwconfig_arg("key2", &len);
- printf("%zd %.*s\n", len, (int)len, ret);
- assert(len == 6);
- assert(hwconfig_arg_cmp("key2", "value3"));
- assert(!strncmp(ret, "value3", len));
-
- assert(hwconfig("key3"));
- assert(hwconfig_arg("key4", &len) == NULL);
- assert(hwconfig_arg("bogus", &len) == NULL);
-
- unsetenv("hwconfig");
-
- assert(hwconfig(NULL) == 0);
- assert(hwconfig("") == 0);
- assert(hwconfig("key3") == 0);
-
- return 0;
-}
-#endif /* HWCONFIG_TEST */