Remove the hard-coded console handler and use a callback instead
Signed-off-by: Joe Hershberger joe.hershberger@ni.com ---
common/cmd_nvedit.c | 33 +++------------------------------ common/console.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ include/env_callback.h | 1 + 3 files changed, 48 insertions(+), 30 deletions(-)
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 7b48560..9cb6629 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -47,7 +47,6 @@ #include <errno.h> #include <malloc.h> #include <watchdog.h> -#include <serial.h> #include <linux/stddef.h> #include <asm/byteorder.h>
@@ -205,10 +204,9 @@ 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) @@ -216,36 +214,11 @@ int env_change_ok(const ENTRY *item, const char *newval, enum env_op op, #endif
name = item->key; +#endif
/* 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) { - 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 */ - } - #ifndef CONFIG_ENV_OVERWRITE /* * Some variables like "ethaddr" and "serial#" can be set only once and diff --git a/common/console.c b/common/console.c index 1177f7d..713bd34 100644 --- a/common/console.c +++ b/common/console.c @@ -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) + 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 diff --git a/include/env_callback.h b/include/env_callback.h index 309ff9b..a614744 100644 --- a/include/env_callback.h +++ b/include/env_callback.h @@ -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 {