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env: Add a console env handler

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Remove the hard-coded console handler and use a callback instead

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger 2012-12-11 22:16:29 -06:00 committed by Tom Rini
parent 1cf0a8b2fb
commit 849d5d9cda
3 changed files with 48 additions and 33 deletions
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36
common/cmd_nvedit.c
View File

@ -47,7 +47,6 @@
#include <errno.h>
#include <malloc.h>
#include <watchdog.h>
#include <serial.h>
#include <linux/stddef.h>
#include <asm/byteorder.h>
@ -206,10 +205,9 @@ static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
int env_change_ok(const ENTRY *item, const char *newval, enum env_op op,
int flag)
{
int console = -1;
#ifndef CONFIG_ENV_OVERWRITE
const char *name;
#if !defined(CONFIG_ENV_OVERWRITE) && defined(CONFIG_OVERWRITE_ETHADDR_ONCE) \
&& defined(CONFIG_ETHADDR)
#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
const char *oldval = NULL;
if (op != env_op_create)
@ -217,35 +215,7 @@ int env_change_ok(const ENTRY *item, const char *newval, enum env_op op,
#endif
name = item->key;
/* Default value for NULL to protect string-manipulating functions */
newval = newval ? : "";
/* Check for console redirection */
if (strcmp(name, "stdin") == 0)
console = stdin;
else if (strcmp(name, "stdout") == 0)
console = stdout;
else if (strcmp(name, "stderr") == 0)
console = stderr;
if (console != -1 && (gd->flags & GD_FLG_DEVINIT) != 0) {
if ((newval == NULL) || (*newval == '\0')) {
/* We cannot delete stdin/stdout/stderr */
if ((flag & H_FORCE) == 0)
printf("Can't delete \"%s\"\n", name);
return 1;
}
#ifdef CONFIG_CONSOLE_MUX
if (iomux_doenv(console, newval))
return 1;
#else
/* Try assigning specified device */
if (console_assign(console, newval) < 0)
return 1;
#endif /* CONFIG_CONSOLE_MUX */
}
#endif
#ifndef CONFIG_ENV_OVERWRITE
/*

44
common/console.c
View File

@ -24,11 +24,55 @@
#include <common.h>
#include <stdarg.h>
#include <malloc.h>
#include <serial.h>
#include <stdio_dev.h>
#include <exports.h>
#include <environment.h>
DECLARE_GLOBAL_DATA_PTR;
static int on_console(const char *name, const char *value, enum env_op op,
int flags)
{
int console = -1;
/* Check for console redirection */
if (strcmp(name, "stdin") == 0)
console = stdin;
else if (strcmp(name, "stdout") == 0)
console = stdout;
else if (strcmp(name, "stderr") == 0)
console = stderr;
/* if not actually setting a console variable, we don't care */
if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
return 0;
switch (op) {
case env_op_create:
case env_op_overwrite:
#ifdef CONFIG_CONSOLE_MUX
if (iomux_doenv(console, value))
return 1;
#else
/* Try assigning specified device */
if (console_assign(console, value) < 0)
return 1;
#endif /* CONFIG_CONSOLE_MUX */
return 0;
case env_op_delete:
if ((flags & H_FORCE) == 0)
printf("Can't delete \"%s\"\n", name);
return 1;
default:
return 0;
}
}
U_BOOT_ENV_CALLBACK(console, on_console);
#ifdef CONFIG_SYS_CONSOLE_IS_IN_ENV
/*
* if overwrite_console returns 1, the stdin, stderr and stdout

1
include/env_callback.h
View File

@ -42,6 +42,7 @@
"baudrate:baudrate," \
"bootfile:bootfile," \
"loadaddr:loadaddr," \
"stdin:console,stdout:console,stderr:console," \
CONFIG_ENV_CALLBACK_LIST_STATIC
struct env_clbk_tbl {