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sandbox: Allow Ctrl-C to work in sandbox

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It is useful for Cltl-C to be handled by U-Boot as it is on other boards.
But it is also useful to be able to terminate U-Boot with Ctrl-C.

Add an option to enable signals while in raw mode, and make this the
default. Add an option to leave the terminal cooked, which is useful for
redirecting output.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2014-02-27 13:26:22 -07:00
parent 20f86a0aea
commit ffb87905cb
5 changed files with 69 additions and 8 deletions
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24
arch/sandbox/include/asm/state.h
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@@ -17,6 +17,29 @@ enum exit_type_id {
STATE_EXIT_POWER_OFF,
};
/**
* Selects the behavior of the serial terminal.
*
* If Ctrl-C is processed by U-Boot, then the only way to quit sandbox is with
* the 'reset' command, or equivalent.
*
* If the terminal is cooked, then Ctrl-C will terminate U-Boot, and the
* command line will not be quite such a faithful emulation.
*
* Options are:
*
* raw-with-sigs - Raw, but allow signals (Ctrl-C will quit)
* raw - Terminal is always raw
* cooked - Terminal is always cooked
*/
enum state_terminal_raw {
STATE_TERM_RAW_WITH_SIGS, /* Default */
STATE_TERM_RAW,
STATE_TERM_COOKED,
STATE_TERM_COUNT,
};
struct sandbox_spi_info {
const char *spec;
const struct sandbox_spi_emu_ops *ops;
@@ -42,6 +65,7 @@ struct sandbox_state {
bool write_state; /* Write sandbox state on exit */
bool ignore_missing_state_on_read; /* No error if state missing */
bool show_lcd; /* Show LCD on start-up */
enum state_terminal_raw term_raw; /* Terminal raw/cooked */
/* Pointer to information for each SPI bus/cs */
struct sandbox_spi_info spi[CONFIG_SANDBOX_SPI_MAX_BUS]