[PATCH 2/2] arm: lpc32xx: restart: support "cmd" from userspace
From: slemieux.tyco at gmail.com <hidden>
Date: 2016-02-18 21:35:24
Subsystem:
arm port, arm/lpc32xx soc support, the rest · Maintainers:
Russell King, Vladimir Zapolskiy, Piotr Wojtaszczyk, Linus Torvalds
From: Sylvain Lemieux <redacted> Add the support to verify if a "cmd" is passed from the userspace program rebooting the system; - if a valid "cmd" is available, it will be handle; - If the received "cmd" is not supported, the default reboot mode is used. Signed-off-by: Sylvain Lemieux <redacted> --- arch/arm/mach-lpc32xx/common.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c
index 9eb9f22..ba61839 100644
--- a/arch/arm/mach-lpc32xx/common.c
+++ b/arch/arm/mach-lpc32xx/common.c@@ -196,6 +196,19 @@ void __init lpc32xx_map_io(void) void lpc23xx_restart(enum reboot_mode mode, const char *cmd) { + /* + * Verify if a "cmd" passed from the userspace program rebooting + * the system; if available, and handle it. + * - For details, see the 'reboot' syscall in kernel/reboot.c + * - If the received "cmd" is not supported, use the default mode. + */ + if (cmd) { + if (cmd[0] == 'h') + mode = REBOOT_HARD; + else if (cmd[0] == 's') + mode = REBOOT_SOFT; + } + /* Make sure WDT clocks are enabled */ __raw_writel(LPC32XX_CLKPWR_PWMCLK_WDOG_EN, LPC32XX_CLKPWR_TIMER_CLK_CTRL);
--
1.8.3.1